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1. Measurement of the central exclusive production of charged particle pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 200 GeV with the STAR detector at RHIC

Author: The STAR collaboration, J. Adam, L. Adamczyk, J. R. Adams, J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, D. M. Anderson, A. Aparin, E. C. Aschenauer, M. U. Ashraf, F. G. Atetalla, A. Attri, G. S. Averichev, V. Bairathi, K. Barish, A. Behera, R. Bellwied, A. Bhasin, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, J. D. Brandenburg, A. V. Brandin, J. Butterworth, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, I. Chakaberia, P. Chaloupka, B. K. Chan, F-H. Chang, Z. Chang, N. Chankova-Bunzarova, A. Chatterjee, D. Chen, J. H. Chen, X. Chen, Z. Chen, J. Cheng, M. Cherney, M. Chevalier, S. Choudhury, W. Christie, X. Chu, H. J. Crawford, M. Csanád, M. Daugherity, T. G. Dedovich, I. M. Deppner, A. A. Derevschikov, L. Didenko, X. Dong, J. L. Drachenberg, J. C. Dunlop, T. Edmonds, N. Elsey, J. Engelage, G. Eppley, R. Esha, S. Esumi, O. Evdokimov, A. Ewigleben, O. Eyser, R. Fatemi, S. Fazio, P. Federic, J. Fedorisin, C. J. Feng, Y. Feng, P. Filip, E. Finch, Y. Fisyak, A. Francisco, L. Fulek, C. A. Gagliardi, T. Galatyuk, F. Geurts, A. Gibson, K. Gopal, D. Grosnick, W. Guryn, A. I. Hamad, A. Hamed, S. Harabasz, J. W. Harris, S. He, W. He, X. H. He, S. Heppelmann, N. Herrmann, E. Hoffman, L. Holub, Y. Hong, S. Horvat, Y. Hu, H. Z. Huang, S. L. Huang, T. Huang, X. Huang, T. J. Humanic, P. Huo, G. Igo, D. Isenhower, W. W. Jacobs, C. Jena, A. Jentsch, Y. JI, J. Jia, K. Jiang, S. Jowzaee, X. Ju, E. G. Judd, S. Kabana, M. L. Kabir, S. Kagamaster, D. Kalinkin, K. Kang, D. Kapukchyan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, M. Kelsey, Y. V. Khyzhniak, D. P. Kikoła, C. Kim, B. Kimelman, D. Kincses, T. A. Kinghorn, I. Kisel, A. Kiselev, A. Kisiel, M. Kocan, L. Kochenda, L. K. Kosarzewski, L. Kramarik, P. Kravtsov, K. Krueger, N. Kulathunga Mudiyanselage, L. Kumar, R. Kunnawalkam Elayavalli, J. H. Kwasizur, R. Lacey, S. Lan, J. M. Landgraf, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, Y. H. Leung, C. Li, W. Li, X. Li, Y. Li, Y. Liang, R. Licenik, T. Lin, Y. Lin, M. A. Lisa, F. Liu, H. Liu, P. Liu, T. Liu, X. Liu, Y. Liu, Z. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, N. S. Lukow, S. Luo, X. Luo, G. L. Ma, L. Ma, R. Ma, Y. G. Ma, N. Magdy, R. Majka, D. Mallick, S. Margetis, C. Markert, H. S. Matis, J. A. Mazer, N. G. Minaev, S. Mioduszewski, B. Mohanty, M. M. Mondal, I. Mooney, Z. Moravcova, D. A. Morozov, M. Nagy, J. D. Nam, Md. Nasim, K. Nayak, D. Neff, J. M. Nelson, D. B. Nemes, M. Nie, G. Nigmatkulov, T. Niida, L. V. Nogach, T. Nonaka, A. S. Nunes, G. Odyniec, A. Ogawa, S. Oh, V. A. Okorokov, B. S. Page, R. Pak, A. Pandav, Y. Panebratsev, B. Pawlik, D. Pawlowska, H. Pei, C. Perkins, L. Pinsky, R. L. Pintér, J. Pluta, J. Porter, M. Posik, N. K. Pruthi, M. Przybycien, J. Putschke, H. Qiu, A. Quintero, S. K. Radhakrishnan, S. Ramachandran, R. L. Ray, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, L. Ruan, J. Rusnak, N. R. Sahoo, H. Sako, S. Salur, J. Sandweiss, S. Sato, W. B. Schmidke, N. Schmitz, B. R. Schweid, F. Seck, J. Seger, M. Sergeeva, R. Seto, P. Seyboth, N. Shah, E. Shahaliev, P. V. Shanmuganathan, M. Shao, F. Shen, W. Q. Shen, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. Sikora, M. Simko, J. Singh, S. Singha, N. Smirnov, W. Solyst, P. Sorensen, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, M. Stefaniak, D. J. Stewart, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. Sumbera, B. Summa, X. M. Sun, X. Sun, Y. Sun, B. Surrow, D. N. Svirida, P. Szymanski, A. H. Tang, Z. Tang, A. Taranenko, T. Tarnowsky, J. H. Thomas, A. R. Timmins, D. Tlusty, M. Tokarev, C. A. Tomkiel, S. Trentalange, R. E. Tribble, P. Tribedy, S. K. Tripathy, O. D. Tsai, Z. Tu, T. Ullrich, D. G. Underwood, I. Upsal, G. Van Buren, J. Vanek, A. N. Vasiliev, I. Vassiliev, F. Videbæk, S. Vokal, S. A. Voloshin, F. Wang, G. Wang, J. S. Wang, P. Wang, Y. Wang, Z. Wang, J. C. Webb, P. C. Weidenkaff, L. Wen, G. D. Westfall, H. Wieman, S. W. Wissink, R. Witt, Y. Wu, Z. G. Xiao, G. Xie, W. Xie, H. Xu, N. Xu, Q. H. Xu, Y. F. Xu, Y. Xu, Z. Xu, C. Yang, Q. Yang, S. Yang, Y. Yang, Z. Yang, Z. Ye, L. Yi, K. Yip, H. Zbroszczyk, W. Zha, D. Zhang, S. Zhang, X. P. Zhang, Y. Zhang, Z. J. Zhang, Z. Zhang, J. Zhao, C. Zhong, C. Zhou, X. Zhu, Z. Zhu, M. Zurek, and M. Zyzak
Subjects: Diffraction, Forward physics, Hadron-Hadron scattering (experiments), Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract We report on the measurement of the Central Exclusive Production of charged particle pairs h + h − (h = π, K, p) with the STAR detector at RHIC in proton-proton collisions at s $$ \sqrt{s} $$ = 200 GeV. The charged particle pairs produced in the reaction pp → p′ + h + h − + p′ are reconstructed from the tracks in the central detector and identified using the specific energy loss and the time of flight method, while the forward-scattered protons are measured in the Roman Pot system. Exclusivity of the event is guaranteed by requiring the transverse momentum balance of all four final-state particles. Differential cross sections are measured as functions of observables related to the central hadronic final state and to the forward-scattered protons. They are measured in a fiducial region corresponding to the acceptance of the STAR detector and determined by the central particles’ transverse momenta and pseudorapidities as well as by the forward-scattered protons’ momenta. This fiducial region roughly corresponds to the square of the four-momentum transfers at the proton vertices in the range 0.04 GeV2 < −t 1 , −t 2 < 0.2 GeV2, invariant masses of the charged particle pairs up to a few GeV and pseudorapidities of the centrally-produced hadrons in the range |η| < 0.7. The measured cross sections are compared to phenomenological predictions based on the Double Pomeron Exchange (DPE) model. Structures observed in the mass spectra of π + π − and K + K − pairs are consistent with the DPE model, while angular distributions of pions suggest a dominant spin-0 contribution to π + π − production. For π + π − production, the fiducial cross section is extrapolated to the Lorentz-invariant region, which allows decomposition of the invariant mass spectrum into continuum and resonant contributions. The extrapolated cross section is well described by the continuum production and at least three resonances, the f 0(980), f 2(1270) and f 0(1500), with a possible small contribution from the f 0(1370). Fits to the extrapolated differential cross section as a function of t 1 and t 2 enable extraction of the exponential slope parameters in several bins of the invariant mass of π + π − pairs. These parameters are sensitive to the size of the interaction region.
Published: 2020
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2. Evidence for a QCD accelerator in relativistic heavy-ion collisions

Author: L. C. Bland, E. J. Brash, H. J. Crawford, A. Drees, J. Engelage, C. Folz, E. Judd, X. Li, N. G. Minaev, R. N. Munroe, L. Nogach, A. Ogawa, C. Perkins, M. Planinic, A. Quintero, G. Schnell, G. Simatovic, P. Shanmuganathan, B. Surrow, and A. N. Vasiliev
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report measurements of forward jets produced in Cu+Au collisions at $\sqrt{s_{NN}}=200$ GeV at the Relativistic Heavy Ion Collider. The jet-energy distributions extend to energies much larger than expected by Feynman scaling. This constitutes the first clear evidence for Feynman-scaling violations in heavy-ion collisions. Such high-energy particle production has been in models via QCD string interactions, but so far is untested by experiment. One such model calls this a hadronic accelerator. Studies with a particular heavy-ion event generator (HIJING) show that photons and mesons exhibit such very high-energy production in a heavy-ion collision, so {\it QCD accelerator} appropriately captures the physics associated with such QCD string interactions. All models other than HIJING used for hadronic interactions in the study of extensive air showers from cosmic rays either do not include these QCD string interactions, or have smaller effects from the QCD accelerator., As accepted for publication in Phys. Rev. C
Published: 2021

3. The proton–Ω correlation function in Au + Au collisions at sNN=200GeV

Author: M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Roli Esha, Daniel Nemes, Jie Zhao, S. Horvat, Anik Gupta, L. C. Bland, B. J. Summa, J. Y. Zhang, F. Videbæk, A. Lipiec, J. Porter, P. Sorensen, David Brown, W. Zha, Frank Jm Geurts, T. Galatyuk, N. Yu, E. P. Sichtermann, S. Ramachandran, L. V. Nogach, B. Pawlik, F. Liu, Miroslav Simko, Mariusz Przybycien, Sumit R. Das, Y. Yang, Sukalyan Chattopadhyay, Siwei Luo, O. Eyser, C. Zhou, A. Gibson, J. H. Thomas, L. P. Zhou, F-H. Chang, Q. Yang, G. S. Averichev, K. Meehan, Shize Yang, Madan M. Aggarwal, Fuqiang Wang, L. Didenko, I. Chakaberia, I. K. Yoo, J. K. Adkins, A. Harlenderova, F. Seck, Md. Nasim, R. D. Majka, L. Zhang, Wei Xie, D. K. Mishra, Xiangming Sun, M. Posik, H. M. Spinka, Arka Chatterjee, J. M. Campbell, Q. H. Xu, R. Witt, R. Fatemi, L. He, Shaji Kumar, Todd Kinghorn, D. Kalinkin, T. Ullrich, A. Aparin, I. G. Alekseev, W. Guryn, J. Schambach, H. Z. Huang, S. Vokal, J. Xu, N. Kulathunga, S. Mioduszewski, S. Fazio, A. Vossen, T. G. Dedovich, J. D. Negrete, M. A. Lisa, J. C. Mei, K. Krueger, S. Esumi, J. Fedorisin, M. M. Mondal, J. C. Webb, Isaac Mooney, N. Xu, P. Filip, N. Schmitz, Zebo Tang, Xiaofeng Luo, I. Kisel, Guo-Liang Ma, W. Christie, Li Yi, E. Shahaliev, Prithwish Tribedy, B. K. Srivastava, Chi Yang, Jaroslav Bielcik, D. G. Underwood, R. Seto, Xiaofeng Zhu, Ying Liang, J. Lidrych, G. D. Westfall, N. K. Pruthi, A. S. Hirsch, M. Cherney, Shengli Huang, Y. Li, S. Singha, Andrey Vasiliev, G. Eppley, P. Chaloupka, Ting Lin, J. Jia, Arabinda Behera, C. E. Flores, A. Ogawa, E. G. Judd, O. V. Rogachevskiy, P. Kravtsov, Fuwang Shen, A. M. Schmah, Jana Bielcikova, Z. J. Xu, D. N. Svirida, J. Pluta, J. L. Romero, J. Cheng, M. Tokarev, D. A. Morozov, A. Quintero, N. Chankova-Bunzarova, W. Li, I. Vassiliev, Muhammad Usman Ashraf, P. Federic, Lokesh Kumar, Hua Pei, S. K. Tripathy, X.G. Li, J. C. Dunlop, L. Wen, Lukas Kramarik, C. Perkins, J. W. Harris, Zongye Zhang, Y. Guo, J. M. Nelson, W. J. Llope, C. Zhong, E. C. Aschenauer, S. Trentalange, M. Zyzak, E. Finch, I. G. Bordyuzhin, Sergey Voloshin, Zubayer Ahammed, Xuedong Bai, Janet Elizabeth Seger, S. Margetis, D. L. Olvitt, L. Ma, Vitaly Okorokov, G. Agakishiev, D. S. Gunarathne, I. M. Deppner, G. Wang, Rene Bellwied, X. Dong, Bernd Surrow, Anju Bhasin, N. Elsey, G. Xie, J. Bryslawskyj, D. Mayes, Z. Chang, A. J. Bassill, D. Cebra, K. Jiang, J. A. Mazer, Giacomo Contin, K. Kauder, R. E. Tribble, W. B. Schmidke, Alexander Jentsch, T. D. S. Stanislaus, Yanjun Wu, Tetsuro Sugiura, K. Kang, T. Niida, Q. Y. Shou, C. A. Gagliardi, D. Kapukchyan, P. Federicova, C-Q. Li, D. Arkhipkin, A. Hamed, Arkadiy Taranenko, Zhanwen Zhu, Y. J. Sun, A. Lebedev, H. H. Wieman, Nihar Sahoo, C. Dilks, X. C. Chen, Christina Markert, D. Smirnov, O. Rusnakova, Michal Sumbera, R. Pak, J. Rusnak, J. L. Drachenberg, H. S. Matis, A. A. P. Suaide, Olga Evdokimov, B. Huang, Song Zhang, S. Kabana, A. H. Tang, L. K. Kosarzewski, A. F. Kraishan, Justin Ewigleben, I. Upsal, M. Sergeeva, S. B. Nurushev, W. W. Jacobs, J. Engelage, Catherine Tomkiel, B.R. Schweid, T. J. Humanic, J. Lauret, Anthony Robert Timmins, N.N. Ajitanand, L. Ruan, Joseph Kwasizur, Jay Roberts, Adam Ryszard Kisiel, R. Lednicky, L. Kochenda, T. Tarnowsky, G. Odyniec, G. Nigmatkulov, M. Shao, G. Van Buren, H. J. Crawford, Z. Ye, Jaroslav Adam, Maowu Nie, X. Huang, A. Attri, A. Kechechyan, S. S. Shi, H. W. Ke, S. K. Radhakrishnan, S. W. Wissink, L. Fulek, Pradip Kumar Sahu, T. Nonaka, B. S. Page, Y. Zhang, I. Bunzarov, O. Matonoha, D. P. Kikola, B. Stringfellow, J. M. Landgraf, R. S. Longacre, Jing-Han Chen, P. Huo, Lukas Holub, Bedangadas Mohanty, T. Todoroki, M. Strikhanov, Chong Kim, H. G. Ritter, Xuan Zhang, P. V. Shanmuganathan, Zhigang Xiao, T. Huang, J. Sandweiss, J. R. Adams, Yunpeng Liu, Derek Anderson, R. Aoyama, A. K. Bhati, N. G. Minaev, D. Mallick, W. Solyst, D. Keane, Hanna Paulina Zbroszczyk, G. Igo, Nikolai Smirnov, N. Herrmann, L. Krauth, Jongmin Lee, L. G. Efimov, R. L. Ray, R. Ma, J. Butterworth, Y. F. Xu, R. Kunnawalkam Elayavalli, R. Reed, T. Ljubicic, S. Siejka, Niseem Magdy, H. Caines, M. Lomnitz, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Yu-Gang Ma, Y. Fisyak, Samuel Heppelmann, K. Oh, R. Lacey, P. Szymanski, B. Tu, P. Seyboth, Jan Vanek, Leszek Adamczyk, D. Tlusty, F. G. Atetalla, O. D. Tsai, Peter Q. Liu, J. Kvapil, Nilay Shah, W. Q. Shen, Jorn Henning Putschke, A. V. Brandin, Xiang Sun, Vipul Bairathi, James Brandenburg, K. N. Barish, H. Liu, A. A. Derevschikov, David Stewart, Sevil Salur, Y. Wang, K. Yip, and Rafal Sikora
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Nuclear Theory, Binding energy, Lattice QCD, 01 natural sciences, Nuclear physics, Momentum, Correlation function, 0103 physical sciences, Bound state, Impact parameter, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: We present the first measurement of the proton–Ω correlation function in heavy-ion collisions for the central (0–40%) and peripheral (40–80%) Au + Au collisions at s NN = 200 GeV by the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). Predictions for the ratio of peripheral collisions to central collisions for the proton–Ω correlation function are sensitive to the presence of a nucleon–Ω bound state. These predictions are based on the proton–Ω interaction extracted from ( 2 + 1 ) -flavor lattice QCD calculations at the physical point. The measured ratio of the proton–Ω correlation function between the peripheral (small system) and central (large system) collisions is less than unity for relative momentum smaller than 40 MeV/c. Comparison of our measured correlation ratio with theoretical calculation slightly favors a proton–Ω bound system with a binding energy of ∼ 27 MeV.
Published: 2019
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4. Erratum: Azimuthal Anisotropy of KS0 and Λ+Λ¯ Production at Midrapidity from Au+Au Collisions at sNN=130 GeV [Phys. Rev. Lett. 89 , 132301 (2002)]

Author: S. P. Chernenko, W. J. Llope, A. Cardenas, H. Long, R. Lednický, V. A. Nikitin, K. E. Shestermanov, A. Stolpovsky, R. S. Longacre, W. Christie, L. Kotchenda, H. Bichsel, P. Seyboth, V. Trofimov, Guy Paic, A. Chikanian, A. V. Brandin, S. S. Shimanskii, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, L. C. Bland, Y. Panebratsev, R.Kh. Kutuev, Andrey Vasiliev, Joram Berger, T. Todoroki, Adam Ryszard Kisiel, J. B. Carroll, A. E. Yakutin, G. Igo, M. Oldenburg, H. J. Crawford, M. Castro, M. Calderon De La Barca Sanchez, G. Rai, J. W. Mitchell, N. Schmitz, Janet Elizabeth Seger, VL Rykov, B. D. Anderson, V. Petrov, E. Shahaliev, A. Boucham, T. J. Humanic, V. B. Dunin, A. C. Saulys, Z. Z. Xu, Q. Li, R. Witt, S. E. Vigdor, T. W. Henry, Christian Claude Kuhn, W. S. Deng, V. Ghazikhanian, Nikita Smirnov, I.A. Savin, M. Csanád, A. I. Pavlinov, F. Liu, M. B. Tonjes, J. W. Harris, B. E. Bonner, N. T. Porile, O. D. Tsai, J. L. Romero, Mirko Planinic, H. M. Spinka, C. E. Allgower, G. Eppley, S. Bekele, V. Morozov, Michael Kramer, M. Cherney, B. Lasiuk, E. Finch, Thomas Michael Cormier, R. Willson, D. G. Underwood, Michael W. Anderson, E. Gushin, P. Yepes, V. Eckardt, R. Ma, P. Nevski, J. H. Thomas, D. Hardtke, F. Laue, A. H. Tang, R. D. Majka, J. Pluta, L. Liu, V. M. Leontiev, Olivier Ravel, G. LoCurto, C. O. Blyth, E. Hjort, I. Zborovský, Yu A. Matulenko, M. Horsley, G. Skoro, B. Stringfellow, T. S. McShane, Rene Bellwied, C. P. Lansdell, R. E. Tribble, R.J.M. Snellings, Gerald W Hoffmann, J. N. Marx, B. Choi, J. G. Cramer, Thomas Dietel, Alexander Kovalenko, L. V. Nogach, A. P. Meschanin, Y. Fisyak, Ian Johnson, Christophe Pierre Suire, J. Sowinski, J. Schambach, D. Reichhold, T. J. M. Symons, T. Niida, A. Lebedev, M. M. de Moura, A. Szanto de Toledo, T. Pawlak, Morton Kaplan, P. Sorensen, G. Van Buren, Sevil Salur, Saurabh Pandey, A. Tai, T. W. Ludlam, J. Amonett, J. M. Nelson, V. Emelianov, D. Keane, W. Peryt, R. Stock, L. G. Efimov, D. Seliverstov, A. Schüttauf, G. S. Averichev, J. Porter, C. Roy, A. Klyachko, Vladimir Tikhomirov, P. Chaloupka, S. Trentalange, A. Ishihara, Yu Chen, Gregory Rakness, B. K. Srivastava, I. M. Vasilevski, F. Retiere, J. Gans, Boris Hippolyte, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, H. G. Ritter, A. S. Konstantinov, B. Norman, A. A. Kuznetsov, S. Y. Panitkin, E. Yamamoto, J. Engelage, David Lynn, J. G. Ma, J. Takahashi, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, N. G. Minaev, Sergey Voloshin, K. J. Foley, V. S. Shvetcov, Q. J. Liu, C. A. Whitten, J. Baudot, A. Rose, Y. V. Zanevski, S. Lange, S. J. Lindenbaum, Yu. Ivanshin, N. Xu, John N. Wood, M. Guedon, A. M. Poskanzer, A. M. VanderMolen, Russell Wells, J. M. Landgraf, M. Strikhanov, A. Billmeier, J. Putschke, J. W. Watson, A. Ogawa, Thomas A. Trainor, R. P. Scharenberg, Christina Markert, H. S. Matis, G. Odyniec, J. Sandweiss, Z. Liu, W. W. Jacobs, G. D. Westfall, H. Ward, L. S. Schroeder, S. V. Razin, L. Gaudichet, H. Zhang, Jay Roberts, Jinghui Yang, Malgorzata Anna Janik, C. L. Kunz, K. Krueger, C. F. Moore, C. Struck, M. Lopez-Noriega, I. Sakrejda, M. L. Miller, Fuqiang Wang, P. Szarwas, A. S. Hirsch, P. M. Jacobs, P. Kravtsov, C. Adler, E. G. Judd, Michael A. Thompson, Michal Sumbera, Jeffrey G. Reid, A. A. P. Suaide, E. Sugarbaker, S. R. Klein, V. Faine, J. Castillo, S. W. Wissink, J. E. Draper, H. Z. Huang, N.D. Gagunashvili, O. Barannikova, D. L. Olson, Sukalyan Chattopadhyay, T. J. Hallman, V. Perevoztchikov, K. Filimonov, A. A. Derevschikov, Marie Germain, V. I. Yurevich, A. N. Zubarev, M. Messer, P. Fachini, V. V. Belaga, Peter Graham Jones, Lee Stuart Barnby, F. Meissner, L. Didenko, M. Kopytine, J. Fu, M. Tokarev, K. Schweda, H. H. Wieman, J. Kiryluk, Rajarshi Ray, L. Lakehal-Ayat, W. A. Love, Vitaly Okorokov, Bernd Surrow, J. L. Klay, C. A. Gagliardi, A. Ridiger, T. Herston, R. V. Cadman, S. Heppelmann, D. Flierl, Frank Jm Geurts, L. Martin, J. P. Coffin, O. V. Rogachevski, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, E. J. Stephenson, M. A. Lisa, S. Margetis, O. A. Grachov, B. Erazmus, Gerd Joachim Kunde, D. Cebra, A. Bravar, Yu Melnick, J. Balewski, Claude Andre Pruneau, T. Ullrich, R. Zoulkarneev, V. Grigoriev, E. Potrebenikova, T. Ljubicic, and H. Caines
Subjects: Physics, Nuclear physics, Azimuth, General Physics and Astronomy, Anisotropy
Published: 2021
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5. Erratum: Azimuthal Anisotropy at the Relativistic Heavy Ion Collider: The First and Fourth Harmonics [Phys. Rev. Lett. 92 , 062301 (2004)]

Author: J. W. Harris, R. Willson, D. G. Underwood, D. Thein, R. V. Cadman, C. Roy, P. Seyboth, M. Kopytine, J. Fu, E. Gushin, P. Yepes, V. Eckardt, D. Reichhold, Jianhong Wu, Frank Jm Geurts, I.A. Savin, N. T. Porile, A. H. Tang, T. J. M. Symons, A. Klyachko, J. H. Thomas, M. Tokarev, C-Q. Li, P. Sorensen, M. Shao, G. Van Buren, S. P. Chernenko, Vladimir Tikhomirov, R. Witt, V. Trofimov, R. P. Scharenberg, Christina Markert, W. T. Waggoner, Yu A. Matulenko, M. Horsley, T. W. Henry, W. J. Llope, P. Chaloupka, V. Yu Khodyrev, B. K. Srivastava, J. C. Dunlop, J. Gans, H. S. Matis, Zubayer Ahammed, M. J. LeVine, S. K. Badyal, S. Trentalange, L. S. Schroeder, S. Bhardwaj, Boris Hippolyte, S. V. Razin, M. Calderon De La Barca Sanchez, H. H. Wieman, B. Stringfellow, L. Gaudichet, H. Long, Sukalyan Chattopadhyay, W. W. Jacobs, J. Lauret, M. S. Ganti, R.Kh. Kutuev, Joram Berger, J. E. Gonzalez, Bedangadas Mohanty, T. W. Ludlam, J. M. Nelson, A. Ridiger, G. S. Averichev, K. Schweda, Guy Paic, A. Chikanian, S. S. Shimanskii, Jay Roberts, S. Stanislaus, V. B. Dunin, S. Mahajan, Q. Li, M. Heinz, Michael Kramer, I. Zborovský, L. K. Mangotra, T. J. Hallman, Y. G. Ma, W. Peryt, D. K. Mishra, S. Heppelmann, D. Flierl, J. Porter, V. Ghazikhanian, J. L. Romero, R. Lednický, L. Martin, J. Engelage, John N. Wood, Premomoy Ghosh, J. M. Landgraf, M. Strikhanov, C. Perkins, T. Niida, A. Lebedev, M. M. de Moura, J. G. Cramer, R. Manweiler, T. S. McShane, Y. Fisyak, Ian Johnson, T. Todoroki, Adam Ryszard Kisiel, J. B. Carroll, Christophe Pierre Suire, H. J. Crawford, G. Wang, V. A. Nikitin, K. E. Shestermanov, A. Boucham, T. J. Humanic, D. Arkhipkin, S. Bekele, A. Ishihara, H. Jiang, Basanta Kumar Nandi, M. Guedon, A. M. Poskanzer, A. M. VanderMolen, Russell Wells, J. P. Coffin, O. V. Rogachevski, C. P. Lansdell, E. Sugarbaker, R.J.M. Snellings, H. Z. Huang, C. Struck, M. Lopez-Noriega, F. Meissner, J. Kiryluk, Rajarshi Ray, D. A. Morozov, J. L. Klay, M. Botje, A. Billmeier, G. Odyniec, J. Sandweiss, Z. Liu, R. Fatemi, C. O. Blyth, R. S. Longacre, P. Bhaskar, V. Perevoztchikov, K. Filimonov, Q. J. Liu, C. A. Whitten, L. Ruan, M. J. Mora-Corral, A. Rose, S. Lange, S. J. Lindenbaum, H. Ward, Sergey Voloshin, K. J. Foley, D. Seliverstov, J. Takahashi, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, X. L. Wang, B. I. Bezverkhny, S. Margetis, O. A. Grachov, X. Dong, S. K. Pal, A. Bravar, V. Grigoriev, E. Potrebenikova, V. V. Belaga, B. Erazmus, Gerd Joachim Kunde, D. Cebra, M. Estienne, E. Finch, A. Szanto de Toledo, T. Pawlak, A. Stolpovsky, L. Kotchenda, J. R. Adams, M. Castro, L. C. Bland, C. L. Kunz, K. Krueger, C. F. Moore, Y. Panebratsev, D. Grosnick, G. Rai, R. Picha, N. Xu, P. Filip, Debasish Das, G. D. Westfall, S. C. Phatak, A. Kumar, T. Ljubicic, M. Cherney, E. G. Judd, Thomas Michael Cormier, S. Das, P. Nevski, A. Gupta, B. Norman, Malgorzata Anna Janik, J. Baudot, Y. V. Zanevski, Saroj K. Nayak, Morton Kaplan, X. Z. Cai, Peter Graham Jones, Yu Melnick, H. Bichsel, Raghunath Sahoo, S. M. Guertin, D. P. Mahapatra, Yu Chen, M. Csanád, J. N. Marx, Mirko Planinic, P. A. Żołnierczuk, N.D. Gagunashvili, Michael W. Anderson, L. Liu, B. Choi, F. Du, S. Kabana, Olivier Ravel, Y. P. Viyogi, H. Caines, Sudhir Raniwala, Camelia Mironov, Michal Sumbera, A. A. P. Suaide, G. Renault, Thomas Dietel, Zhongyukun Xu, M. Potekhin, G. Igo, Alexander Kovalenko, L. V. Nogach, V. I. Kravtsov, M. R. Dutta Majumdar, M. Oldenburg, J. Zoulkarneeva, V. Faine, J. W. Mitchell, Z. P. Zhang, V. Petrov, J. Castillo, S. W. Wissink, Anand Kumar Dubey, L. Didenko, F. Retiere, A. S. Hirsch, P. M. Jacobs, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, P. Kravtsov, C. Adler, B. V. K. S. Potukuchi, David Lynn, J. E. Draper, N. G. Minaev, N. Schmitz, E. Shahaliev, T. Ullrich, R. Zoulkarneev, H. G. Ritter, Jeffrey G. Reid, D. Magestro, J. Putschke, J. W. Watson, E. Hjort, Gregory Rakness, H. M. Spinka, A. Ogawa, H. F. Chen, Shengli Huang, Thomas A. Trainor, G. Skoro, J. G. Ma, R. N. Singaraju, Marcelo Gameiro Munhoz, D. J. Prindle, Z. Z. Xu, A. P. Meschanin, S. R. Klein, Manish Sharma, M. A. Lisa, W. J. Dong, O. Barannikova, D. L. Olson, Nikita Smirnov, A. A. Derevschikov, Vitaly Okorokov, Bernd Surrow, Marie Germain, A. Tai, G. Sood, C. A. Gagliardi, J. Amonett, T. Herston, Madan M. Aggarwal, A. N. Zubarev, Fuqiang Wang, M. Messer, V. Emelianov, V. I. Yurevich, Frank Simon, P. Fachini, A. K. Bhati, D. Keane, S. Gronstal, Lee Stuart Barnby, R. Stock, L. G. Efimov, W. A. Love, D. D. Koetke, T. K. Nayak, B. E. Bonner, O. D. Tsai, B. Lasiuk, M. A. Vasiliev, Sevil Salur, Saurabh Pandey, W. Christie, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, Andrey Vasiliev, Janet Elizabeth Seger, T. Kollegger, A. I. Pavlinov, F. Liu, M. B. Tonjes, V. Morozov, T. D. Gutierrez, D. Hardtke, F. Laue, R. D. Majka, J. Sowinski, Z. M. Wang, J. Schambach, Julien Faivre, A. V. Brandin, S. E. Vigdor, Christian Claude Kuhn, R. Ma, B. D. Anderson, H. Zhang, G. Eppley, I. Sakrejda, J. Pluta, M. L. Miller, L. Molnar, P. Szarwas, Rene Bellwied, R. E. Tribble, A. A. Kuznetsov, S. Y. Panitkin, Gerald W Hoffmann, E. Yamamoto, and M. D. Trivedi
Subjects: Nuclear physics, Physics, Azimuth, Harmonics, General Physics and Astronomy, Anisotropy, Relativistic Heavy Ion Collider
Published: 2021
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6. Measurement of transverse single-spin asymmetries of π0 and electromagnetic jets at forward rapidity in 200 and 500 GeV transversely polarized proton-proton collisions

Author: Muhammad Usman Ashraf, Avishek Chatterjee, Bairathi, J. Engelage, N. Elsey, Audrey Francisco, J. K. Adkins, N. Ghimire, Adams, R. Fatemi, Anju Bhasin, C. A. Gagliardi, Jaroslav Adam, L. C. Bland, D. Chen, J. H. Chen, C. J. Feng, Donald M. Anderson, M. Calderon De La Barca Sanchez, Madan M. Aggarwal, S. Fazio, I. G. Bordyuzhin, C. Dilks, J. Fedorisin, Frank Jm Geurts, T. Galatyuk, T. Edmonds, M. Cherney, E. C. Aschenauer, J. D. Brandenburg, G. Agakishiev, S. Esumi, Jana Bielcikova, J. C. Dunlop, L. Didenko, X. Dong, D. Cebra, G. Eppley, W. Christie, Jaroslav Bielcik, F-H. Chang, X. Chu, J. Cheng, P. Federic, N. Chankova-Bunzarova, O. Eyser, G. S. Averichev, X. C. Chen, B. K. Chan, T. G. Dedovich, E. Finch, Zubayer Ahammed, Z. Chang, Rene Bellwied, X. Gou, M. Chevalier, I. M. Deppner, P. Filip, Arabinda Behera, H. J. Crawford, I. G. Alekseev, Somnath Choudhury, M. Csanad, M. S. Daugherity, K. N. Barish, L. Fulek, P. Chaloupka, A. Aparin, A. Attri, J. L. Drachenberg, A. A. Derevschikov, A. Gibson, H. Caines, J. M. Butterworth, Olga Evdokimov, Yicheng Feng, Jing-Han Chen, Y. Fisyak, Leszek Adamczyk, A. Ewigleben, F. G. Atetalla, K. Gopal, A. V. Brandin, Irakli Chakaberia, and Zhenyu Chen
Subjects: Quantum chromodynamics, Physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Parton, State (functional analysis), 01 natural sciences, Asymmetry, Momentum, Nuclear physics, 0103 physical sciences, Rapidity, 010306 general physics, Spin-½, media_common
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Ghimire, N; Gibson, A; Gopal, K; Gou, X | Abstract: The STAR Collaboration reports measurements of the transverse single-spin asymmetry (TSSA) of inclusive π0 at center-of-mass energies (s) of 200 GeV and 500 GeV in transversely polarized proton-proton collisions in the pseudo-rapidity region 2.7 to 4.0. The results at the two different energies show a continuous increase of the TSSA with Feynman-x, and, when compared to previous measurements, no dependence on s from 19.4 GeV to 500 GeV is found. To investigate the underlying physics leading to this large TSSA, different topologies have been studied. π0 with no nearby particles tend to have a higher TSSA than inclusive π0. The TSSA for inclusive electromagnetic jets, sensitive to the Sivers effect in the initial state, is substantially smaller, but shows the same behavior as the inclusive π0 asymmetry as a function of Feynman-x. To investigate final-state effects, the Collins asymmetry of π0 inside electromagnetic jets has been measured. The Collins asymmetry is analyzed for its dependence on the π0 momentum transverse to the jet thrust axis and its dependence on the fraction of jet energy carried by the π0. The asymmetry was found to be small in each case for both center-of-mass energies. All the measurements are compared to QCD-based theoretical calculations for transverse-momentum-dependent parton distribution functions and fragmentation functions. Some discrepancies are found, which indicates new mechanisms might be involved.
Published: 2021
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7. Global Polarization of Ξ and Ω Hyperons in Au+Au Collisions at sNN=200 GeV

Author: M. Csanad, F. G. Atetalla, M. Chevalier, J. C. Dunlop, Frank Jm Geurts, T. Galatyuk, L. C. Bland, M. U. Ashraf, Zubayer Ahammed, O. Eyser, K. Gopal, A. Gibson, Jing-Han Chen, H. Caines, A. V. Brandin, K. N. Barish, J. Engelage, Madan M. Aggarwal, T. G. Dedovich, M. S. Daugherity, J. K. Adkins, A. A. Derevschikov, D. Chen, X. Gou, D. Grosnick, P. Chaloupka, Y. Fisyak, R. Fatemi, J. Butterworth, C. J. Feng, G. Eppley, S. Choudhury, S. Esumi, I. G. Bordyuzhin, J. D. Brandenburg, T. Edmonds, L. Fulek, J. Adam, L. Didenko, I. Chakaberia, N. Chankova-Bunzarova, E. C. Aschenauer, N. Ghimire, A. Ewigleben, A. Francisco, Derek Anderson, A. Attri, Leszek Adamczyk, X. Chu, Rene Bellwied, X. Dong, B. K. Chan, N. Elsey, Z. Chang, M. Cherney, Z. Chen, J. Cheng, C. A. Gagliardi, P. Federic, Jaroslav Bielcik, Olga Evdokimov, P. Filip, F-H. Chang, H. J. Crawford, J. Chen, G. S. Averichev, Yicheng Feng, J. Fedorisin, I. G. Alekseev, G. Agakishiev, D. Cebra, M. Calderon De La Barca Sanchez, Anju Bhasin, Arabinda Behera, Arghya Chatterjee, W. Christie, I. M. Deppner, J. L. Drachenberg, A. Aparin, Adams, Jana Bielcikova, Bairathi, E. Finch, S. Fazio, and Xuliang Chen
Subjects: Physics, Angular distribution, Hyperon, General Physics and Astronomy, Parity (physics), Vorticity, Atomic physics, Polarization (waves)
Abstract: Global polarization of Ξ and Ω hyperons has been measured for the first time in Au+Au collisions at sqrt[s_{NN}]=200 GeV. The measurements of the Ξ^{-} and Ξ[over ¯]^{+} hyperon polarization have been performed by two independent methods, via analysis of the angular distribution of the daughter particles in the parity violating weak decay Ξ→Λ+π, as well as by measuring the polarization of the daughter Λ hyperon, polarized via polarization transfer from its parent. The polarization, obtained by combining the results from the two methods and averaged over Ξ^{-} and Ξ[over ¯]^{+}, is measured to be ⟨P_{Ξ}⟩=0.47±0.10(stat)±0.23(syst)% for the collision centrality 20%-80%. The ⟨P_{Ξ}⟩ is found to be slightly larger than the inclusive Λ polarization and in reasonable agreement with a multiphase transport model. The ⟨P_{Ξ}⟩ is found to follow the centrality dependence of the vorticity predicted in the model, increasing toward more peripheral collisions. The global polarization of Ω, ⟨P_{Ω}⟩=1.11±0.87(stat)±1.97(syst)% was obtained by measuring the polarization of daughter Λ in the decay Ω→Λ+K, assuming the polarization transfer factor C_{ΩΛ}=1.
Published: 2021
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8. Comparison of transverse single-spin asymmetries for forward π0 production in polarized pp , pAl and pAu collisions at nucleon pair c.m. energy sNN=200 GeV

Author: Muhammad Usman Ashraf, Jaroslav Bielcik, N. Xu, P. Filip, Sergey Voloshin, Xinyue Ju, G. D. Westfall, K. Jiang, Y. Wang, Y. Hu, O. V. Rogachevskiy, D. Kalinkin, G. Eppley, S. Heppelmann, B. J. Summa, M. Csanad, D. D. Koetke, S. Harabasz, J. Pluta, Peng Liu, Anju Bhasin, Y. Panebratsev, Saehanseul Oh, D. Grosnick, J. Putschke, Xiaofeng Zhu, W. Christie, Ying Liang, D. Kincses, M. Zyzak, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, Subhash Singha, Andrey Vasiliev, X.G. Li, Janet Elizabeth Seger, I. M. Deppner, K. Kang, T. Niida, A. Lebedev, Maria Stefaniak, Qi Yang, Zuojia Wang, A. Ogawa, Y. Fisyak, M. Tokarev, S. Ramachandran, O. Eyser, F. Liu, Miroslav Simko, Mariusz Przybycien, Q. H. Xu, Madan M. Aggarwal, Fuqiang Wang, Rene Bellwied, Y. J. Sun, C. Dilks, W. He, Y. Yu, Md. Nasim, R. D. Majka, Siwei Luo, J. L. Drachenberg, Zhigang Xiao, T. Huang, S. Kabana, D. Isenhower, J. D. Brandenburg, Z. Z. Xu, M. I. Nagy, Y. F. Wu, R. E. Tribble, Yunpeng Liu, P. Szymanski, Lin Ma, F. Videbæk, C-Q. Li, T. D. S. Stanislaus, Nikita Smirnov, K. Nayak, Christina Markert, H. H. Wieman, L. Didenko, N. G. Minaev, Y. Li, Jize Zhao, R. Witt, M. Calderon De La Barca Sanchez, A. I. Hamad, Jiangyong Jia, Sedigheh Jowzaee, B. Kimelman, D. Zhang, I. G. Alekseev, S. Mioduszewski, H. S. Matis, M. A. Lisa, S. Esumi, L. K. Kosarzewski, Y. Lin, A. V. Brandin, I. Vassiliev, X. Chu, H. Z. Huang, S. Vokal, Isaac Mooney, Yunlan Ji, X. M. Sun, K. N. Barish, Guannan Xie, Xuan Zhang, W. W. Jacobs, J. Rusnak, J. Lauret, P. Federic, Audrey Francisco, Vitaly Okorokov, Chitrasen Jena, J. Engelage, D. Kapukchyan, Prithwish Tribedy, B. K. Srivastava, G. Nigmatkulov, Shengli Huang, Daniel Nemes, P. Sorensen, Yevheniia Khyzhniak, Hanna Paulina Zbroszczyk, R. Lednicky, L. Kochenda, Joseph Kwasizur, P. V. Shanmuganathan, Z. Ye, Maowu Nie, M. Kocan, Z. Tu, Bernd Surrow, X. Huang, R. S. Longacre, S. Horvat, L. Ruan, N. Elsey, B. K. Chan, Michal Sumbera, Diana Pawlowska, P. Seyboth, T. Tarnowsky, Jan Vanek, Shangfeng Yang, Dukhishyam Mallick, A. Kechechyan, M. Shao, G. Van Buren, M. L. Kabir, T. Nonaka, D. Keane, J. C. Dunlop, L. Wen, J. H. Chen, C. J. Feng, Rajarshi Ray, W. B. Schmidke, S. Fazio, Zongye Zhang, Vipul Bairathi, I. G. Bordyuzhin, Irakli Chakaberia, A. A. P. Suaide, R. Reed, W. Zha, M. Sergeeva, Guo-Liang Ma, J. M. Landgraf, D. Chen, M. H. Kelsey, Catherine Tomkiel, G. Agakishiev, C. A. Gagliardi, Li Yi, A. A. Derevschikov, S. S. Shi, J. R. Adams, G. Igo, D. A. Morozov, D. Cebra, Leszek Adamczyk, J. W. Harris, Zubayer Ahammed, N. S. Lukow, Z. Moravcova, T. Edmonds, M. Strikhanov, W. J. Llope, C. Zhou, Zhanwen Zhu, S. W. Wissink, P. Kravtsov, D. Neff, R. Kunnawalkam Elayavalli, Zhenyu Chen, Wei Xie, J. D. Nam, D. G. Underwood, F. G. Atetalla, O. D. Tsai, J. M. Nelson, Alexander Jentsch, N. K. Pruthi, K. Kauder, A. Taranenko, A. Gibson, B. S. Page, Y. Zhang, Avishek Chatterjee, C. Zhong, X. G. Luo, A. S. Nunes, Q. Y. Shou, D. P. Kikola, A. Attri, Y. F. Xu, R. Pak, B. Stringfellow, P. C. Weidenkaff, G. Odyniec, J. Sandweiss, R. Seto, J. Cheng, A. Aparin, A. H. Tang, Pengdong Wang, W. Q. Shen, K. Gopal, Y. G. Ma, Jing-Han Chen, A. Ewigleben, Olga Evdokimov, Peng Huo, J. M. Butterworth, L. S. Pinsky, K. Yip, Joel Anthony Mazer, Z. Yang, David Stewart, J. S. Wang, Sevil Salur, C. Yang, Xiaoyu Liu, W. Guryn, R. Lacey, J. C. Webb, N. Schmitz, S. He, G. Wang, E. Shahaliev, M. M. Mondal, Lokesh Kumar, E. G. Judd, Maria Zurek, Jaroslav Adam, J. Fedorisin, N. Magdy, Y. H. Leung, L. C. Bland, Lukas Holub, Bedangadas Mohanty, K. Krueger, D. Tlusty, Susumu Sato, Z. Liu, H. Sako, Hao Qiu, W. Solyst, Yicheng Feng, Y. Shi, N. Herrmann, Jana Bielcikova, J. L. Romero, Niladribihari Sahoo, Tong Liu, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, Y. He, E. Finch, J. K. Adkins, R. Fatemi, Todd Kinghorn, I. Upsal, H. Liu, M. Cherney, Xiangming Sun, Hua Pei, S. K. Tripathy, Benjamin Schweid, T. J. Humanic, A. Hamed, X. C. Chen, Alexander Kiselev, X. Gou, Robert Licenik, Anthony Robert Timmins, Roland Laszlo Pinter, H. J. Crawford, P. Chaloupka, Ting Lin, S. Trentalange, B. Pawlik, S. Zhang, Zebo Tang, C. Perkins, Frank Jm Geurts, T. Galatyuk, Y. Hong, Z. Chang, A. Pandav, N. Kulathunga Mudiyanselage, S. Lan, F. Seck, L. V. Nogach, M. Posik, Arabinda Behera, J. B. Singh, S. Kumar, H. M. Spinka, T. G. Dedovich, D. N. Svirida, Somnath Choudhury, J. Porter, Ivan Kisel, M. S. Daugherity, H. W. Ke, L. Fulek, Y. Yang, Z. J. Zhang, Nilay Shah, Chong Kim, Ashik Ikbal Sheikh, Donald M. Anderson, H. G. Ritter, E. Hoffman, Rafal Sikora, J. H. Thomas, F-H. Chang, G. S. Averichev, E. C. Aschenauer, S. Margetis, X. Dong, E. P. Sichtermann, T. Ullrich, C. C. Zhang, H. S. Xu, M. Chevalier, Jongmin Lee, R. Ma, T. Ljubicic, X. H. He, H. Caines, and A. Quintero
Subjects: Physics, Nuclear physics, Pion, Electromagnetic calorimeter, Proton, Meson, Pseudorapidity, Production (computer science), Nucleon, Spin-½
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Gopal, K; Gou, X; Grosnick, D | Abstract: The STAR collaboration reports a measurement of the transverse single-spin asymmetries, AN, for neutral pions produced in polarized proton collisions with protons (pp), with aluminum nuclei (pAl) and with gold nuclei (pAu) at a nucleon-nucleon center-of-mass energy of 200 GeV. Neutral pions are observed in the forward direction relative to the transversely polarized proton beam, in the pseudorapidity region 2.7lηl3.8. Results are presented for π0s observed in the STAR forward meson spectrometer electromagnetic calorimeter in narrow Feynman x (xF) and transverse momentum (pT) bins, spanning the range 0.172.5 GeV/c. It is further observed that the value of AN is significantly larger for events with a large-pT isolated π0 than for events with a nonisolated π0 accompanied by additional jetlike fragments. The nuclear dependence r(A) is similar for isolated and nonisolated π0 events.
Published: 2021
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9. Observation of D_{s}^{±}/D^{0} Enhancement in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, A, Aparin, E C, Aschenauer, M U, Ashraf, F G, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A, Behera, R, Bellwied, A, Bhasin, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, D, Chen, J, Chen, J H, Chen, X, Chen, Z, Chen, J, Cheng, M, Cherney, M, Chevalier, S, Choudhury, W, Christie, X, Chu, H J, Crawford, M, Csanád, M, Daugherity, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, S, Esumi, O, Evdokimov, A, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, C J, Feng, Y, Feng, P, Filip, E, Finch, Y, Fisyak, A, Francisco, C, Fu, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, N, Ghimire, A, Gibson, K, Gopal, X, Gou, D, Grosnick, W, Guryn, A I, Hamad, A, Hamed, S, Harabasz, J W, Harris, S, He, W, He, X, He, Y, He, S, Heppelmann, N, Herrmann, E, Hoffman, L, Holub, Y, Hong, S, Horvat, Y, Hu, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, D, Isenhower, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, M L, Kabir, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, B, Kimelman, D, Kincses, T A, Kinghorn, I, Kisel, A, Kiselev, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, S, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, S, Lan, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, Y H, Leung, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, Y, Lin, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, R S, Longacre, N S, Lukow, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, J A, Mazer, N G, Minaev, S, Mioduszewski, B, Mohanty, I, Mooney, Z, Moravcova, D A, Morozov, M, Nagy, J D, Nam, Md, Nasim, K, Nayak, D, Neff, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, A S, Nunes, G, Odyniec, A, Ogawa, S, Oh, V A, Okorokov, B S, Page, R, Pak, A, Pandav, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, L, Pinsky, R L, Pintér, J, Pluta, B R, Pokhrel, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, H, Qiu, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, N R, Sahoo, H, Sako, S, Salur, J, Sandweiss, S, Sato, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, A I, Sheikh, W Q, Shen, S S, Shi, Y, Shi, Q Y, Shou, E P, Sichtermann, R, Sikora, M, Simko, J, Singh, S, Singha, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, M, Sumbera, B, Summa, X M, Sun, X, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, J S, Wang, P, Wang, Y, Wang, Z, Wang, J C, Webb, P C, Weidenkaff, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Y, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, Y, Yu, H, Zbroszczyk, W, Zha, C, Zhang, D, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z J, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Abstract: We report on the first measurement of charm-strange meson D_{s}^{±} production at midrapidity in Au+Au collisions at sqrt[s_{NN}]=200 GeV from the STAR experiment. The yield ratio between strange (D_{s}^{±}) and nonstrange (D^{0}) open-charm mesons is presented and compared to model calculations. A significant enhancement, relative to a pythia simulation of p+p collisions, is observed in the D_{s}^{±}/D^{0} yield ratio in Au+Au collisions over a large range of collision centralities. Model calculations incorporating abundant strange-quark production in the quark-gluon plasma and coalescence hadronization qualitatively reproduce the data. The transverse-momentum integrated yield ratio of D_{s}^{±}/D^{0} at midrapidity is consistent with a prediction from a statistical hadronization model with the parameters constrained by the yields of light and strange hadrons measured at the same collision energy. These results suggest that the coalescence of charm quarks with strange quarks in the quark-gluon plasma plays an important role in D_{s}^{±}-meson production in heavy-ion collisions.
Published: 2021

10. Measurements of W and Z/γ* cross sections and their ratios in p+p collisions at RHIC

Author: J. W. Harris, I. Vassiliev, H. Z. Huang, S. Vokal, N. S. Lukow, Sergey Voloshin, Xinyue Ju, Yunlan Ji, G. Xie, Frank Jm Geurts, Xuan Zhang, T. Galatyuk, A. H. Tang, Pengdong Wang, K. Jiang, Hanna Paulina Zbroszczyk, W. Christie, C. J. Feng, Y. Yu, K. Kauder, R. S. Longacre, Anthony Robert Timmins, Roland Laszlo Pinter, H. J. Crawford, D. A. Morozov, Subhash Singha, Andrey Vasiliev, X. Sun, X. Huang, A. Kechechyan, J. K. Adkins, Nasim, P. V. Shanmuganathan, R. Kunnawalkam Elayavalli, R. Reed, T. Edmonds, R. Witt, S. Mioduszewski, K. N. Barish, X.G. Li, R. Fatemi, Todd Kinghorn, M. L. Kabir, Janet Elizabeth Seger, N. K. Pruthi, K. Krueger, D. Mallick, X. Chu, B. K. Chan, Daniel Nemes, Jie Zhao, S. Horvat, I. Upsal, Yawen Wang, Prithwish Tribedy, B. K. Srivastava, M. Simko, I. M. Deppner, Michal Sumbera, A. A. P. Suaide, G. Igo, M. Cherney, Xiangming Sun, Lokesh Kumar, F. Liu, N. Kulathunga Mudiyanselage, D. N. Svirida, Siwei Luo, Hua Pei, Catherine Tomkiel, S. W. Wissink, Christina Markert, J. Butterworth, Mariusz Przybycien, Olga Evdokimov, Y. Yang, G. Eppley, D. Neff, Y. Zhang, W. Zha, Z. Ye, B. J. Summa, J. Pluta, S. Harabasz, J. R. Adams, A. A. Derevschikov, Zhigang Xiao, T. Huang, Zebo Tang, J. Putschke, Zuojia Wang, Y. H. Leung, J. L. Romero, Jana Bielcikova, M. Tokarev, Yunpeng Liu, Derek Anderson, N. Chankova-Bunzarova, Q. H. Xu, W. He, M. Kelsey, Lukas Kramarik, Skipper Kagamaster, R. D. Majka, L. V. Nogach, C. Perkins, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, J. L. Drachenberg, F. G. Atetalla, O. D. Tsai, Anju Bhasin, Z. Zhang, K. Kang, P. Sorensen, Sooraj Radhakrishnan, J. D. Brandenburg, Maria Zurek, H. W. Ke, Sanjeev Kumar, Y. He, E. Finch, D. G. Underwood, H. S. Matis, Jiangyong Jia, Isaac Mooney, S. Fazio, Xuliang Chen, L. K. Kosarzewski, Yicheng Feng, Y. Shi, Z. Moravcova, W. W. Jacobs, J. Lauret, J. M. Nelson, L. Ma, Y. Xu, Yevheniia Khyzhniak, R. Lednicky, N. G. Minaev, W. J. Llope, C. Zhou, J. Adam, B. Kimelman, T. D. S. Stanislaus, H. H. Wieman, L. Didenko, I. Chakaberia, V. Bairathi, A. Lebedev, L. Kochenda, M. I. Nagy, T. Tarnowsky, Z. Tu, C. Li, S. Ramachandran, O. Eyser, Maksym Zyzak, Xiaoyu Liu, Y. Li, A. Attri, P. Liu, Rene Bellwied, R. E. Tribble, Arghya Chatterjee, Seongshik Oh, P. C. Weidenkaff, Nilay Shah, J. S. Wang, W. Q. Shen, K. Gopal, J. B. Singh, J. C. Dunlop, L. Wen, J. Rusnak, J. Cheng, D. Kapukchyan, Maria Stefaniak, J. C. Webb, A. V. Brandin, M. U. Ashraf, C. Jena, Y. Lin, M. Kocan, Xiaofeng Zhu, Ying Liang, R. Seto, Zubayer Ahammed, L. Ruan, Takafumi Niida, E. G. Judd, J. Chen, H. Liu, T. Nonaka, Wei Li, David Stewart, Wei Xie, A. Jentsch, J. D. Nam, A. Ogawa, D. Tlusty, Peng Huo, T. G. Dedovich, Q. Y. Shou, Sevil Salur, A. I. Sheikh, W. Guryn, A. Aparin, R. Lacey, R. Pak, I. G. Bordyuzhin, N. Schmitz, Y. Panebratsev, J. Fedorisin, Xiaofeng Luo, E. Shahaliev, J. A. Mazer, D. Grosnick, A. Ewigleben, Y. J. Sun, A. Francisco, L. S. Pinsky, Lukas Holub, Bedangadas Mohanty, Y. Hong, D. Isenhower, A. Pandav, K. Yip, Samuel Heppelmann, M. Sergeeva, K. Nayak, T. J. Humanic, Guo-Liang Ma, N. Xu, P. Filip, Li Yi, Z. Liu, Arkadiy Taranenko, D. Keane, Nikolai Smirnov, G. D. Westfall, B. S. Page, D. P. Kikola, B. Stringfellow, P. Kravtsov, Joseph Kwasizur, D. Kincses, M. Shao, G. Van Buren, F. Videbæk, S. S. Shi, Diana Pawlowska, Y. G. Ma, Jing-Han Chen, E. C. Aschenauer, S. Margetis, X. Dong, H. Xu, E. P. Sichtermann, T. Ullrich, C. C. Zhang, M. Chevalier, Jongmin Lee, R. L. Ray, R. Ma, Y. Fisyak, T. Ljubicic, P. Szymanski, X. H. He, Niseem Magdy, H. Caines, G. Wang, N. Herrmann, Jaroslav Bielcik, P. Seyboth, Y. Hu, Jan Vanek, Leszek Adamczyk, P. Federic, O. V. Rogachevskiy, N. R. Sahoo, A. Quintero, A. S. Nunes, D. D. Koetke, R. Licenik, Sujit Kumar Tripathy, Madan M. Aggarwal, Fuqiang Wang, D. Kalinkin, D. Zhang, A. Hamed, S. Esumi, Vitaly Okorokov, Bernd Surrow, N. Elsey, Z. Chang, W. B. Schmidke, C. A. Gagliardi, Alexander Kiselev, X. Gou, P. Chaloupka, Ting Lin, Z. J. Xu, S. Trentalange, Yong Wu, B. Pawlik, A. Gibson, S. Zhang, Benjamin Schweid, G. Agakishiev, D. Cebra, Zhanwen Zhu, L. C. Bland, Y. F. Xu, S. Kabana, Chi Yang, I. G. Alekseev, M. A. Lisa, J. Engelage, G. Nigmatkulov, Chong Kim, J. M. Landgraf, H. G. Ritter, D. Chen, J. H. Thomas, M. Strikhanov, G. Odyniec, C. Zhong, E. Hoffman, Rafal Sikora, F-H. Chang, Q. Yang, J. Sandweiss, Mate Csanad, Z. Yang, S. He, G. S. Averichev, J. Porter, Z. Chen, M. S. Daugherity, Ivan Kisel, Tong Liu, Z. J. Zhang, Susumu Sato, Hao Qiu, W. Solyst, S. Choudhury, S. L. Huang, M. Nie, Shize Yang, S. Lan, F. Seck, M. Posik, Arabinda Behera, Hiroyuki Sako, H. M. Spinka, and L. Fulek
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, 010306 general physics, 01 natural sciences, Mathematical physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Gopal, K; Gou, X; Grosnick, D; Guryn, W | Abstract: We report on the W and Z/γ∗ differential and total cross sections as well as the W+/W- and (W++W-)/(Z/γ∗) cross section ratios measured by the STAR experiment at RHIC in p+p collisions at s=500 GeV and 510 GeV. The cross sections and their ratios are sensitive to quark and antiquark parton distribution functions. In particular, at leading order, the W cross section ratio is sensitive to the d¯/ū ratio. These measurements were taken at high Q2∼MW2,MZ2 and can serve as input into global analyses to provide constraints on the sea quark distributions. The results presented here combine three STAR datasets from 2011, 2012, and 2013, accumulating an integrated luminosity of 350 pb-1. We also assess the expected impact that our W+/W- cross section ratios will have on various quark distributions, and find sensitivity to the ū-d¯ and d¯/ū distributions.
Published: 2021
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11. Global Polarization of Ξ and Ω Hyperons in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, A, Aparin, E C, Aschenauer, M U, Ashraf, F G, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A, Behera, R, Bellwied, A, Bhasin, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, D, Chen, J, Chen, J H, Chen, X, Chen, Z, Chen, J, Cheng, M, Cherney, M, Chevalier, S, Choudhury, W, Christie, X, Chu, H J, Crawford, M, Csanád, M, Daugherity, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, S, Esumi, O, Evdokimov, A, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, C J, Feng, Y, Feng, P, Filip, E, Finch, Y, Fisyak, A, Francisco, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, N, Ghimire, A, Gibson, K, Gopal, X, Gou, D, Grosnick, W, Guryn, A I, Hamad, A, Hamed, S, Harabasz, J W, Harris, S, He, W, He, X H, He, Y, He, S, Heppelmann, N, Herrmann, E, Hoffman, L, Holub, Y, Hong, S, Horvat, Y, Hu, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, D, Isenhower, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, M L, Kabir, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, B, Kimelman, D, Kincses, T A, Kinghorn, I, Kisel, A, Kiselev, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, S, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, S, Lan, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, Y H, Leung, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, Y, Lin, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, R S, Longacre, N S, Lukow, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, J A, Mazer, N G, Minaev, S, Mioduszewski, B, Mohanty, I, Mooney, Z, Moravcova, D A, Morozov, M, Nagy, J D, Nam, Md, Nasim, K, Nayak, D, Neff, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, A S, Nunes, G, Odyniec, A, Ogawa, S, Oh, V A, Okorokov, B S, Page, R, Pak, A, Pandav, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, L, Pinsky, R L, Pintér, J, Pluta, B R, Pokhrel, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, H, Qiu, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, N R, Sahoo, H, Sako, S, Salur, J, Sandweiss, S, Sato, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, A I, Sheikh, W Q, Shen, S S, Shi, Y, Shi, Q Y, Shou, E P, Sichtermann, R, Sikora, M, Simko, J, Singh, S, Singha, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, M, Sumbera, B, Summa, X M, Sun, X, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, J S, Wang, P, Wang, Y, Wang, Z, Wang, J C, Webb, P C, Weidenkaff, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Y, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, Y, Yu, H, Zbroszczyk, W, Zha, C, Zhang, D, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z J, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Abstract: Global polarization of Ξ and Ω hyperons has been measured for the first time in Au+Au collisions at sqrt[s_{NN}]=200 GeV. The measurements of the Ξ^{-} and Ξ[over ¯]^{+} hyperon polarization have been performed by two independent methods, via analysis of the angular distribution of the daughter particles in the parity violating weak decay Ξ→Λ+π, as well as by measuring the polarization of the daughter Λ hyperon, polarized via polarization transfer from its parent. The polarization, obtained by combining the results from the two methods and averaged over Ξ^{-} and Ξ[over ¯]^{+}, is measured to be ⟨P_{Ξ}⟩=0.47±0.10(stat)±0.23(syst)% for the collision centrality 20%-80%. The ⟨P_{Ξ}⟩ is found to be slightly larger than the inclusive Λ polarization and in reasonable agreement with a multiphase transport model. The ⟨P_{Ξ}⟩ is found to follow the centrality dependence of the vorticity predicted in the model, increasing toward more peripheral collisions. The global polarization of Ω, ⟨P_{Ω}⟩=1.11±0.87(stat)±1.97(syst)% was obtained by measuring the polarization of daughter Λ in the decay Ω→Λ+K, assuming the polarization transfer factor C_{ΩΛ}=1.
Published: 2020

12. Measurement of inclusive charged-particle jet production in Au + Au collisions at sNN=200 GeV

Author: Mate Csanad, Muhammad Usman Ashraf, Chong Kim, Joel Anthony Mazer, Z. Yang, S. He, Sergey Voloshin, Anju Bhasin, C-Q. Li, Xinyue Ju, Christina Markert, H. G. Ritter, D. Tlusty, K. Jiang, Y. Wang, H. Z. Huang, S. Vokal, E. Hoffman, Rafal Sikora, M. I. Nagy, H. S. Matis, Y. F. Wu, R. Witt, S. Mioduszewski, K. Kang, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, J. C. Dunlop, L. Wen, T. Niida, Audrey Francisco, Zubayer Ahammed, L. K. Kosarzewski, Y. Fisyak, Lin Ma, Y. J. Sun, W. W. Jacobs, J. B. Singh, G. Eppley, G. Agakishiev, D. Kapukchyan, J. Lauret, Q. Y. Shou, A. Lebedev, L. Adamczyk, Niladribihari Sahoo, Tong Liu, R. Pak, D. Cebra, Zhanwen Zhu, Guo-Liang Ma, J. Pluta, Yevheniia Khyzhniak, R. Lednicky, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, Olga Evdokimov, S. Kabana, Jay Roberts, M. Zyzak, A. V. Brandin, L. Kochenda, Z. Tu, T. G. Dedovich, Maria Zurek, Vitaly Okorokov, K. Krueger, A. Gibson, C. Zhong, P. Seyboth, D. A. Morozov, T. Edmonds, Yicheng Feng, N. Chankova-Bunzarova, W. Li, Alexander Kiselev, J. H. Thomas, Jan Vanek, Skipper Kagamaster, Vipul Bairathi, Irakli Chakaberia, J. M. Butterworth, Rene Bellwied, Wei Xie, J. C. Webb, J. D. Nam, S. Fazio, Zongye Zhang, M. S. Daugherity, M. Sergeeva, F-H. Chang, I. G. Bordyuzhin, H. W. Ke, Li Yi, L. Fulek, J. Engelage, G. Nigmatkulov, Susumu Sato, Hao Qiu, D. Kalinkin, Bernd Surrow, A. Aparin, Zhenyu Chen, R. E. Tribble, W. Solyst, Siwei Luo, S. Heppelmann, J. M. Landgraf, Xiaoyu Liu, Jize Zhao, Peng Huo, N. Schmitz, M. H. Kelsey, B. J. Summa, S. Harabasz, Y. F. Xu, Zebo Tang, E. Shahaliev, I. G. Alekseev, M. A. Lisa, D. Chen, N. Kulathunga Mudiyanselage, D. N. Svirida, G. Wang, M. Strikhanov, M. M. Mondal, E. G. Judd, H. Sako, P. Chaloupka, Ting Lin, X. Chu, N. Herrmann, Maria Stefaniak, Y. Lin, Yunlan Ji, G. S. Averichev, Jana Bielcikova, S. Ramachandran, O. Eyser, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, P. M. Jacobs, S. Trentalange, J. L. Romero, B. S. Page, N. Elsey, Avishek Chatterjee, L. V. Nogach, B. K. Chan, Michal Sumbera, A. A. P. Suaide, H. Liu, Z. Chang, G. Odyniec, J. Sandweiss, Lukas Kramarik, Catherine Tomkiel, W. Guryn, Jiangyong Jia, Sooraj Krishnan Radhakrishnan, E. Finch, Y. Yang, P. Kravtsov, Fuwang Shen, D. P. Kikola, S. W. Wissink, D. Neff, Isaac Mooney, Y. Zhang, B. Stringfellow, S. Lan, F. Seck, Nilay Shah, X. C. Chen, R. Lacey, Y. Li, M. Posik, C. Perkins, N. Magdy, Lukas Holub, Bedangadas Mohanty, X. M. Sun, A. Ewigleben, Benjamin Schweid, T. J. Humanic, Arabinda Behera, L. S. Pinsky, K. Yip, W. B. Schmidke, H. M. Spinka, P. Federic, A. Hamed, Guannan Xie, J. S. Wang, Somnath Choudhury, Z. Liu, Xuan Zhang, C. Yang, J. Porter, C. A. Gagliardi, Z. Moravcova, Y. Hong, Robert Licenik, J. Putschke, Xiaofeng Zhu, Ying Liang, F. Liu, Ivan Kisel, Miroslav Simko, A. Pandav, Anthony Robert Timmins, J. Fedorisin, I. Vassiliev, N. K. Pruthi, Adam Ryszard Kisiel, Z. J. Zhang, Mariusz Przybycien, A. Ogawa, Hanna Paulina Zbroszczyk, B. Pawlik, Frank Jm Geurts, T. Galatyuk, P. Sorensen, Joseph Kwasizur, Roland Laszlo Pinter, H. J. Crawford, M. Shao, G. Van Buren, D. G. Underwood, Jaroslav Bielcik, S. Zhang, D. Kincses, J. K. Adkins, S. S. Shi, Md. Nasim, R. D. Majka, R. Reed, Dukhishyam Mallick, J. L. Drachenberg, R. Fatemi, J. M. Nelson, W. Christie, Todd Kinghorn, W. J. Llope, C. Zhou, Y. Hu, Y. G. Ma, Alexander Jentsch, I. Upsal, O. V. Rogachevskiy, A. Attri, F. Videbæk, J. Cheng, Chitrasen Jena, M. Cherney, Xiangming Sun, Diana Pawlowska, Hua Pei, S. K. Tripathy, J. W. Harris, R. Kunnawalkam Elayavalli, N. S. Lukow, Roli Esha, Madan M. Aggarwal, Fuqiang Wang, Daniel Nemes, S. Horvat, X. G. Luo, A. H. Tang, Pengdong Wang, D. Zhang, W. Zha, S. Esumi, R. Seto, W. He, Lokesh Kumar, Jaroslav Adam, J. D. Brandenburg, Y. H. Leung, L. C. Bland, L. Didenko, K. N. Barish, P. V. Shanmuganathan, T. Tarnowsky, A. A. Derevschikov, E. P. Sichtermann, T. Ullrich, N. Xu, P. Filip, H. S. Xu, G. D. Westfall, D. Keane, E. C. Aschenauer, S. Margetis, F. G. Atetalla, X. Dong, O. D. Tsai, P. C. Weidenkaff, W. Q. Shen, K. Gopal, David Stewart, M. Chevalier, Sevil Salur, Jongmin Lee, Peng Liu, R. Ma, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Z. Ye, D. Isenhower, Maowu Nie, T. Ljubicic, R. S. Longacre, X. Huang, Z. Z. Xu, X. H. He, Zhigang Xiao, A. Kechechyan, Nikita Smirnov, K. Nayak, T. Nonaka, T. Huang, Yunpeng Liu, Derek Anderson, M. L. Kabir, H. Caines, A. Quintero, N. G. Minaev, B. Kimelman, M. Tokarev, P. Szymanski, T. D. S. Stanislaus, H. H. Wieman, J. Rusnak, G. Igo, M. Kocan, L. Ruan, K. Kauder, A. Taranenko, Qi Yang, Zuojia Wang, Q. H. Xu, Subhash Singha, Andrey Vasiliev, X.G. Li, Janet Elizabeth Seger, J. R. Adams, and I. M. Deppner
Subjects: Physics, Jet (fluid), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, 01 natural sciences, Charged particle, Nuclear physics, Recoil, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Jet quenching, Event generator
Abstract: The STAR Collaboration at the Relativistic Heavy Ion Collider reports the first measurement of inclusive jet production in peripheral and central Au+Au collisions at sNN=200 GeV. Jets are reconstructed with the anti-kT algorithm using charged tracks with pseudorapidity |η
Published: 2020
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13. Measurement of inclusive J/ψ polarization in p+p collisions at s=200 GeV by the STAR experiment

Author: M. Sergeeva, Qi Yang, Joel Anthony Mazer, Z. Yang, Zuojia Wang, S. He, Q. H. Xu, Guo-Liang Ma, D. Tlusty, B. S. Page, Avishek Chatterjee, Li Yi, D. P. Kikola, P. Kravtsov, Fuwang Shen, F. Videbæk, M. Chevalier, Z. Chang, Chitrasen Jena, G. Agakishiev, Diana Pawlowska, B. Stringfellow, S. Bueltmann, D. Kincses, S. Lan, F. Seck, Alexander Kiselev, Maria Stefaniak, W. Christie, Madan M. Aggarwal, Fuqiang Wang, Y. F. Xu, Jongmin Lee, D. G. Underwood, Niladribihari Sahoo, Tong Liu, D. Cebra, J. C. Dunlop, L. Wen, G. Eppley, Y. Yang, Siwei Luo, N. Magdy, Lukas Holub, M. Posik, Arabinda Behera, H. M. Spinka, H. Z. Huang, Zhigang Xiao, T. Huang, Yunpeng Liu, N. G. Minaev, X. C. Chen, Subhash Singha, Andrey Vasiliev, Somnath Choudhury, Zubayer Ahammed, W. J. Llope, C. Zhou, R. Ma, J. Porter, D. Keane, Nilay Shah, Zhanwen Zhu, Bedangadas Mohanty, S. Vokal, P. Chaloupka, B. Kimelman, X.G. Li, Robert Licenik, J. Pluta, Anthony Robert Timmins, Adam Ryszard Kisiel, Janet Elizabeth Seger, R. Kunnawalkam Elayavalli, Z. Liu, Ivan Kisel, D. N. Svirida, Zebo Tang, A. Gibson, Alexander Jentsch, Audrey Francisco, C. Zhong, Ting Lin, N. Xu, P. Filip, M. I. Nagy, Y. F. Wu, M. Zyzak, Y. Fisyak, Roland Laszlo Pinter, H. J. Crawford, S. Fazio, Zongye Zhang, N. Chankova-Bunzarova, W. Li, J. K. Adkins, Z. J. Zhang, I. M. Deppner, Q. Y. Shou, A. V. Brandin, S. Trentalange, X. M. Sun, H. Liu, D. Zhang, N. Kulathunga Mudiyanselage, R. Fatemi, Lin Ma, Todd Kinghorn, P. Sorensen, Joseph Kwasizur, J. Cheng, T. Ljubicic, X. H. He, F. G. Atetalla, A. Attri, I. G. Bordyuzhin, Y. Li, J. R. Adams, G. D. Westfall, M. H. Kelsey, I. Upsal, R. Pak, Jiangyong Jia, O. D. Tsai, Vipul Bairathi, Benjamin Schweid, T. J. Humanic, A. Hamed, J. H. Thomas, D. Kapukchyan, M. Shao, G. Van Buren, Skipper Kagamaster, H. Caines, Irakli Chakaberia, F. Liu, J. M. Butterworth, L. V. Nogach, M. Cherney, Miroslav Simko, Shangfeng Yang, S. Esumi, S. S. Shi, Mariusz Przybycien, Rene Bellwied, Hua Pei, S. K. Tripathy, A. Quintero, Peng Huo, P. C. Weidenkaff, Isaac Mooney, F-H. Chang, W. Q. Shen, K. Gopal, J. H. Chen, C. J. Feng, Rajarshi Ray, Xiaoyu Liu, R. Witt, Zhenyu Chen, J. C. Webb, C-Q. Li, G. S. Averichev, P. Federic, C. Perkins, J. M. Nelson, S. Mioduszewski, R. S. Longacre, W. Guryn, E. P. Sichtermann, B. Pawlik, H. Sako, R. E. Tribble, R. Lacey, Christina Markert, M. L. Kabir, A. Ewigleben, H. S. Matis, L. S. Pinsky, Susumu Sato, David Stewart, Md. Nasim, Y. G. Ma, Jaroslav Bielcik, M. M. Mondal, Jana Bielcikova, S. Zhang, E. G. Judd, Jize Zhao, G. Wang, R. D. Majka, J. B. Singh, Prithwish Tribedy, B. K. Srivastava, Chong Kim, K. Yip, J. S. Wang, Hao Qiu, W. Solyst, Sevil Salur, D. A. Morozov, T. Edmonds, J. L. Romero, Y. Lin, R. Seto, L. K. Kosarzewski, W. W. Jacobs, J. Fedorisin, G. Igo, Muhammad Usman Ashraf, J. Lauret, J. L. Drachenberg, Z. Ye, C. Yang, Shengli Huang, B. K. Chan, Sergey Voloshin, J. Rusnak, Peng Liu, Lukas Kramarik, Michal Sumbera, A. A. P. Suaide, Yevheniia Khyzhniak, Olga Evdokimov, Yunlan Ji, R. Lednicky, L. Kochenda, Catherine Tomkiel, Z. Tu, T. G. Dedovich, K. Kauder, A. Taranenko, Xinyue Ju, Maowu Nie, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Sooraj Krishnan Radhakrishnan, Y. Hu, D. Kalinkin, E. Finch, Anju Bhasin, Donald M. Anderson, H. G. Ritter, M. Kocan, Roli Esha, Frank Jm Geurts, O. V. Rogachevskiy, S. Heppelmann, S. W. Wissink, D. Neff, Y. Zhang, Jay Roberts, Daniel Nemes, T. Ullrich, X. Huang, L. Ruan, K. Jiang, Y. Wang, D. Isenhower, S. Horvat, T. Galatyuk, Z. Z. Xu, B. J. Summa, N. Herrmann, Maria Zurek, E. Hoffman, I. G. Alekseev, K. Kang, Guannan Xie, Xuan Zhang, Y. Hong, K. Krueger, A. Kechechyan, T. Niida, M. A. Lisa, Nikita Smirnov, K. Nayak, A. Pandav, Yicheng Feng, J. Putschke, Xiaofeng Zhu, Ying Liang, Rafal Sikora, H. S. Xu, Wei Xie, A. Lebedev, L. Adamczyk, P. Seyboth, J. D. Nam, Hanna Paulina Zbroszczyk, W. Zha, K. N. Barish, A. Ogawa, Jan Vanek, T. Nonaka, Z. Moravcova, A. Aparin, S. Ramachandran, Vitaly Okorokov, O. Eyser, E. C. Aschenauer, Bernd Surrow, S. Margetis, R. Reed, N. K. Pruthi, N. Schmitz, X. Dong, E. Shahaliev, N. Elsey, P. V. Shanmuganathan, W. B. Schmidke, C. A. Gagliardi, M. Tokarev, T. Tarnowsky, P. Szymanski, T. D. S. Stanislaus, H. H. Wieman, M. S. Daugherity, A. A. Derevschikov, H. W. Ke, L. Fulek, W. He, J. D. Brandenburg, J. Engelage, G. Nigmatkulov, J. M. Landgraf, L. Didenko, D. Chen, M. Strikhanov, G. Odyniec, J. Sandweiss, I. Vassiliev, Lokesh Kumar, Jaroslav Adam, Y. H. Leung, Y. J. Sun, L. C. Bland, S. Kabana, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Dukhishyam Mallick, J. W. Harris, N. S. Lukow, X. G. Luo, A. H. Tang, Pengdong Wang, and Mate Csanad
Subjects: Physics, Quantum chromodynamics, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, Transverse momentum, 010306 general physics, Polarization (waves), 01 natural sciences, Helicity, Mathematical physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bueltmann, S; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Gopal, K; Grosnick, D; Guryn, W; Hamad, AI | Abstract: We report on new measurements of inclusive J/ψ polarization at midrapidity in p+p collisions at s=200 GeV by the STAR experiment at the Relativistic Heavy Ion Collider. The polarization parameters, λθ, λφ, and λθφ, are measured as a function of transverse momentum (pT) in both the helicity and Collins-Soper (CS) reference frames within pTl10 GeV/c. Except for λθ in the CS frame at the highest measured pT, all three polarization parameters are consistent with 0 in both reference frames without any strong pT dependence. Several model calculations are compared with data, and the one using the Color Glass Condensate effective field theory coupled with nonrelativistic QCD gives the best overall description of the experimental results, even though other models cannot be ruled out due to experimental uncertainties.
Published: 2020
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14. Strange hadron production in Au+Au collisions at sNN=7.7 , 11.5, 19.6, 27, and 39 GeV

Author: S. Fazio, I. G. Bordyuzhin, James Brandenburg, K. N. Barish, Z. Ye, T. Tarnowsky, Maowu Nie, A. Kechechyan, Pradip Kumar Sahu, Maria Stefaniak, Lukas Holub, Subhasis Chattopadhyay, Bedangadas Mohanty, F. G. Atetalla, G. Eppley, Pavol Federic, A. A. Derevschikov, Dingwei Zhang, J. Pluta, N. Chankova-Bunzarova, Muhammad Usman Ashraf, Skipper Kagamaster, Subhash Singha, Y. K. Sun, Bernd Surrow, Paul Sorensen, Rene Bellwied, Brian Page, Yifan Hong, John Nelson, Nu Xu, Raghav Kunnawalkam Elayavalli, Xiangming Sun, Kejun Kang, L. V. Nogach, Jana Bielcikova, B. Huang, Z. Moravcova, N. K. Pruthi, O. D. Tsai, Xinyue Ju, Zhen Liu, Feng Liu, Norbert Herrmann, N. Elsey, J. Putschke, Chris Perkins, K. Gopal, Lanny Ray, A. V. Brandin, Janet Elizabeth Seger, Z. Chang, I. M. Deppner, Song Zhang, Neha Shah, Zebo Tang, A. Ogawa, Takafumi Niida, Vipul Bairathi, Lokesh Kumar, C. A. Gagliardi, Hans Georg Ritter, Jeong-Hun Lee, Peifeng Liu, F. Videbæk, Dmitri Smirnov, Hal Spinka, D. P. Kikola, H. Liu, Joseph Kwasizur, C. Zhong, E. C. Aschenauer, Wen-Qing Shen, Jaroslav Adam, Madan M. Aggarwal, David Stewart, Irakli Chakaberia, B. Stringfellow, Saskia Mioduszewski, Shusu Shi, M. Tokarev, Yang Yang, Matthew Kelsey, Yuanjing Ji, J. Engelage, Robert E. Tribble, Fuqiang Wang, D. K. Mishra, L. Didenko, Y. Fisyak, Qian Yang, Xiaolong Chen, Yaping Wang, Arabinda Behera, Richard Daniel Majka, X. Dong, B. Schmidke, Liang He, Hao-jie Xu, I. K. Yoo, Xiaoyu Liu, P. Chaloupka, Ting Lin, K. Oh, Chitrasen Jena, X. Zhu, Yifei Zhang, G. Nigmatkulov, Alexandre Alarcon Do Passo Suaide, Rongrong Ma, S. W. Wissink, Miroslav Simko, Ron Longacre, Mariusz Przybycien, F. Seck, P. Szymanski, A. I. Hamad, Sedigheh Jowzaee, Isaac Upsal, Dave Underwood, Xinjie Huang, Prithwish Tribedy, B. K. Srivastava, Juan M. Romero, Sevil Salur, M. Sergeeva, Qinghua Xu, Maksym Zyzak, J. Rusnak, Christina Markert, H. H. Wieman, O. Rusnakova, H. S. Matis, Nihar Sahoo, Cheng Li, D. Kapukchyan, Declan Keane, J. M. Landgraf, M. Lomnitz, Diana Pawlowska, L. K. Kosarzewski, E. P. Sichtermann, J. Lauret, Jing-Han Chen, Qiye Shou, Shengli Huang, M. Posik, H. W. Ke, L. Fulek, M. M. Mondal, E. G. Judd, P. Seyboth, Jan Vanek, Leszek Adamczyk, Shuai Yang, J. Schambach, D. Kalinkin, Xiaofeng Luo, Guo-Liang Ma, Chensheng Zhou, Alexander Vasiliev, Yevheniia Khyzhniak, S. Stanislaus, L. Kochenda, J. W. Harris, M. Kocan, Robert Licenik, I. G. Alekseev, Anthony Robert Timmins, Adam Ryszard Kisiel, Chong Kim, Siwei Luo, Anju Bhasin, R. Seto, Jianping Cheng, Li Yi, Z. Tu, M. A. Lisa, J. C. Mei, Tetsuro Sugiura, A. J. Bassill, J. C. Dunlop, L. Wen, L. Ruan, ShinIchi Esumi, B. K. Chan, Michal Sumbera, T. Ullrich, S. Heppelmann, C. Dilks, Roland Laszlo Pinter, Xin Li, B. J. Summa, Jaroslav Bielcik, T. G. Dedovich, Dmitry Morozov, M. Strikhanov, K. Yip, Zubayer Ahammed, Joseph Adams, Catherine Tomkiel, Hank Crawford, H. Z. Huang, Kishora Nayak, Rafal Sikora, S. Kabana, Ivan Kisel, P. Kravtsov, Fuwang Shen, J. Bryslawskyj, R. Fatemi, A. Lebedev, Manuel Calderon De La Barca Sanchez, Gang Wang, I. Bunzarov, O. Matonoha, Norbert Schmitz, Z. Y. Zhang, Yu-Gang Ma, Jiangyong Jia, Todd Kinghorn, Nalinda Kulathunga Mudiyanselage, O. V. Rogachevskiy, Vitalii Okorokov, Yi Wang, T. Nonaka, T. Todoroki, Guannan Xie, Isaac Mooney, Shenghui Zhang, Ming Shao, L. C. Bland, Arghya Chatterjee, R. Lednicky, Wei Li, Justin Ewigleben, A. Gibson, G. Odyniec, J. Sandweiss, William Jacobs, Hanna Paulina Zbroszczyk, Roli Esha, Feng-Han Chang, A. K. Bhati, T. Ljubicic, Wei Xie, M. Cherney, I. Vassiliev, Chi Yang, Rosi Reed, Daniel Nemes, S. Siejka, J. H. Thomas, Yuliang Sun, Jie Zhao, H. Caines, Yi-Fei Xu, A. Quintero, A. H. Tang, Mate Csanad, Hua Pei, Nasim, D. N. Svirida, S. K. Tripathy, R. Pak, A. Aparin, S. Ramachandran, J. L. Drachenberg, Olga Evdokimov, Yuanjing Li, Niseem Magdy Abdelwahab Abdelrahman, G. S. Averichev, Zhigang Xiao, Jagbir Singh, T. Huang, Nikolai Smirnov, O. Eyser, W. J. Llope, Joel Anthony Mazer, Z. Yang, Derek Anderson, Kun Jiang, Jay Roberts, Benjamin Schweid, T. J. Humanic, Alexander Jentsch, Zhenyu Ye, N. G. Minaev, Maria Zurek, A. Attri, K. Krueger, P. Huo, D. Arkhipkin, A. Hamed, E. Shahaliev, P. Filip, Yicheng Feng, Yang Wu, Anik Gupta, R. Witt, Lei Zhang, Xiaoping Zhang, J. M. Butterworth, Sergei A. Voloshin, Spiros Margetis, Gene Van Buren, Bill Christie, J. C. Webb, D. Tlusty, A. Lipiec, Zhongbin Xu, Lukas Kramarik, Frank Jm Geurts, T. Galatyuk, Sooraj Krishnan Radhakrishnan, E. Finch, W. Zha, Peng Liu, Wlodek Guryn, S. Vokal, Yue Liang, Y. Panebratsev, W. Solyst, Saehanseul Oh, D. Grosnick, J. Porter, R. Aoyama, Samuel Heppelmann, B. Tu, Tong Liu, S. Das, K. Meehan, G. Agakishiev, S. Horvat, Roy A. Lacey, T. Edmonds, Pengfei Wang, Gary Westfall, D. Cebra, S. Trentalange, Zhanwen Zhu, Kevin Adkins, Long Ma, Yanfang Liu, J. Fedorisin, B. Pawlik, P. V. Shanmuganathan, D. Mallick, G. Igo, K. Kauder, and A. Taranenko
Subjects: Physics, Strange quark, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Strangeness production, Strangeness, 01 natural sciences, Baryon, Nuclear physics, 0103 physical sciences, Transverse mass, High Energy Physics::Experiment, Impact parameter, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We present STAR measurements of strange hadron (KS0, Λ, Λ¯, Ξ−, Ξ¯+, Ω−, Ω¯+, and ϕ) production at midrapidity (|y
Published: 2020
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15. Beam energy dependence of net- Λ fluctuations measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider

Author: A. Gibson, D. Kalinkin, S. Heppelmann, N. Kulathunga Mudiyanselage, B. J. Summa, Olga Evdokimov, S. Ramachandran, O. Eyser, Y. Yang, Nilay Shah, W. J. Llope, L. V. Nogach, Jay Roberts, J. Engelage, G. Nigmatkulov, Maria Zurek, J. M. Landgraf, M. Sergeeva, Jongmin Lee, C. Zhou, R. Ma, M. Strikhanov, K. Krueger, Yicheng Feng, H. Z. Huang, S. Vokal, G. Odyniec, J. Sandweiss, Mate Csanad, Joel Anthony Mazer, Z. Yang, Alexander Jentsch, J. Bryslawskyj, Lei Zhang, D. Tlusty, Shangfeng Yang, J. H. Chen, Rajarshi Ray, Niladribihari Sahoo, Tong Liu, B. S. Page, Avishek Chatterjee, Y. Hong, C. Yang, T. Ljubicic, D. P. Kikola, R. Witt, D. A. Morozov, T. Edmonds, Wei Xie, A. Attri, Y. Li, S. Mioduszewski, B. Stringfellow, A. Aparin, H. Caines, P. Federic, Prithwish Tribedy, B. K. Srivastava, Tetsuro Sugiura, Y. J. Sun, Shengli Huang, C. Dilks, Guannan Xie, A. Quintero, Xuan Zhang, S. Kabana, A. Ewigleben, K. Yip, C. Zhong, J. C. Dunlop, L. Wen, N. Schmitz, E. Shahaliev, Vitaly Okorokov, Bernd Surrow, J. M. Butterworth, N. Elsey, J. C. Webb, W. B. Schmidke, A. V. Brandin, Zebo Tang, I. Vassiliev, Zubayer Ahammed, C. A. Gagliardi, W. Solyst, J. Rusnak, Jiangyong Jia, E. P. Sichtermann, M. Kocan, Hanna Paulina Zbroszczyk, J. B. Singh, Q. Y. Shou, Madan M. Aggarwal, Fuqiang Wang, L. Ruan, J. H. Thomas, D. K. Mishra, R. Pak, Vipul Bairathi, Irakli Chakaberia, Jana Bielcikova, X. C. Chen, I. G. Alekseev, M. A. Lisa, J. C. Mei, D. Zhang, Robert Licenik, Isaac Mooney, F-H. Chang, S. Esumi, Anthony Robert Timmins, Adam Ryszard Kisiel, J. L. Romero, J. D. Brandenburg, Roland Laszlo Pinter, H. J. Crawford, J. K. Adkins, G. S. Averichev, C. Perkins, Jaroslav Bielcik, J. Porter, R. Fatemi, L. He, T. Ullrich, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, G. Agakishiev, Roli Esha, Todd Kinghorn, Ivan Kisel, D. Cebra, T. G. Dedovich, I. Upsal, Zhanwen Zhu, O. V. Rogachevskiy, L. Didenko, Maria Stefaniak, E. Finch, Daniel Nemes, S. Horvat, M. Cherney, Z. Ye, H. S. Xu, Zhigang Xiao, T. Huang, Muhammad Usman Ashraf, Hua Pei, Z. Chang, S. K. Tripathy, R. Reed, K. N. Barish, Maowu Nie, F. Seck, Yunpeng Liu, M. Posik, X. Huang, A. Kechechyan, Arabinda Behera, Sergey Voloshin, H. M. Spinka, P. V. Shanmuganathan, Pradip Kumar Sahu, T. Nonaka, N. G. Minaev, Xinyue Ju, E. C. Aschenauer, J. W. Harris, T. Tarnowsky, X. M. Sun, X. G. Luo, P. Sorensen, Joseph Kwasizur, A. H. Tang, S. Margetis, K. Jiang, Pengdong Wang, M. Tokarev, Y. Wang, Y. F. Wu, N. Xu, P. Filip, M. Shao, G. Van Buren, I. Bunzarov, A. A. Derevschikov, O. Matonoha, P. Szymanski, X. Dong, T. D. S. Stanislaus, H. H. Wieman, S. S. Shi, R. Kunnawalkam Elayavalli, G. D. Westfall, S. Das, A. Gupta, Frank Jm Geurts, T. Galatyuk, D. Kapukchyan, J. M. Nelson, R. Seto, A. Lipiec, K. Meehan, Y. G. Ma, W. Zha, Lokesh Kumar, Jaroslav Adam, Peng Huo, L. C. Bland, W. Guryn, R. Lacey, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, B. K. Chan, Michal Sumbera, J. Fedorisin, A. A. P. Suaide, D. G. Underwood, Catherine Tomkiel, J. Cheng, S. W. Wissink, Y. Zhang, Dukhishyam Mallick, Xiaoyu Liu, M. M. Mondal, E. G. Judd, N. Magdy, Lukas Holub, Bedangadas Mohanty, Z. Liu, F. Videbæk, Sukalyan Chattopadhyay, Chitrasen Jena, M. Lomnitz, Diana Pawlowska, Yunlan Ji, Anju Bhasin, A. J. Bassill, K. Kang, B. Huang, T. Niida, A. Lebedev, L. Adamczyk, Guo-Liang Ma, Li Yi, R. S. Longacre, Z. Moravcova, P. Kravtsov, Fuwang Shen, Dmitry Smirnov, N. K. Pruthi, G. Igo, K. Kauder, A. Taranenko, Chong Kim, G. Eppley, Qi Yang, Donald M. Anderson, H. G. Ritter, W. Christie, Q. H. Xu, P. Chaloupka, Ting Lin, J. Pluta, M. Zyzak, Rafal Sikora, Subhash Singha, Andrey Vasiliev, J. R. Adams, S. Trentalange, P. Seyboth, N. Chankova-Bunzarova, W. Li, X.G. Li, Skipper Kagamaster, Janet Elizabeth Seger, Y. F. Xu, B. Pawlik, I. M. Deppner, J. Putschke, Jan Vanek, Rene Bellwied, Xiaofeng Zhu, Ying Liang, F. Liu, Miroslav Simko, S. Zhang, Mariusz Przybycien, R. E. Tribble, Jize Zhao, A. Ogawa, D. N. Svirida, H. Liu, Md. Nasim, R. D. Majka, J. L. Drachenberg, J. Schambach, Benjamin Schweid, T. J. Humanic, A. Hamed, H. W. Ke, L. Fulek, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, M. H. Kelsey, G. Wang, C-Q. Li, Christina Markert, O. Rusnakova, H. S. Matis, L. K. Kosarzewski, N. Herrmann, W. W. Jacobs, J. Lauret, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, S. Siejka, Y. Fisyak, Lin Ma, F. G. Atetalla, O. D. Tsai, W. Q. Shen, K. Gopal, David Stewart, Sevil Salur, Peng Liu, Y. Panebratsev, Saehanseul Oh, D. Grosnick, R. Aoyama, Z. Z. Xu, B. Tu, Nikita Smirnov, K. Nayak, D. Keane, and Siwei Luo
Subjects: Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Strangeness, Quantum number, 01 natural sciences, Hadronization, Nuclear physics, 0103 physical sciences, Rapidity, Baryon number, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The measurements of particle multiplicity distributions have generated considerable interest in understanding the fluctuations of conserved quantum numbers in the quantum chromodynamics (QCD) hadronization regime, in particular near a possible critical point and near the chemical freeze-out. Net-protons and net-kaons have been used as proxies for the net-baryon number and net-strangeness, respectively. We report the measurement of efficiency- and centrality-bin width-corrected cumulant ratios (C2/C1, C3/C2) of net-Λ distributions, in the context of both strangeness and baryon number conservation, as a function of collision energy, centrality, and rapidity. The results are for Au+Au collisions at five beam energies (sNN=19.6, 27, 39, 62.4, and 200 GeV) recorded with the Solenoidal Tracker at RHIC (STAR). We compare our results to the Poisson and negative binomial (NBD) expectations, as well as to ultrarelativistic quantum molecular dynamics (UrQMD) and hadron resonance gas (HRG) model predictions. Both NBD and Poisson baselines agree with data within the statistical and systematic uncertainties. UrQMD describes the measured net-ΛC1 and C3 at 200 GeV reasonably well but deviates from C2, and the deviation increases as a function of collision energy. The ratios of the measured cumulants show no features of critical fluctuations. The chemical freeze-out temperatures extracted from a recent HRG calculation, which was successfully used to describe the net-proton, net-kaon, and net-charge data, indicate Λ freeze-out conditions similar to those of kaons. However, large deviations are found when comparing with temperatures obtained from net-proton fluctuations. The net-Λ cumulants show a weak but finite dependence on the rapidity coverage in the acceptance of the detector, which can be attributed to quantum number conservation.
Published: 2020
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16. First Measurement of Λc Baryon Production in Au+Au Collisions at sNN=200 GeV

Author: Jongmin Lee, R. L. Ray, Jorn Henning Putschke, R. Ma, Jaroslav Bielcik, A. V. Brandin, F. Videbæk, Y. Hu, T. Ljubicic, Takafumi Niida, O. V. Rogachevskiy, F. G. Atetalla, A. Quintero, Niseem Magdy, O. D. Tsai, H. Caines, M. Zyzak, Daniel Nemes, Jie Zhao, S. Horvat, J. W. Harris, Sujit Kumar Tripathy, Zhaoping Liu, Diana Pawlowska, P. C. Weidenkaff, N. S. Lukow, W. Q. Shen, K. Gopal, J. K. Adkins, W. Zha, Xuan Zhang, A. Francisco, D. N. Svirida, Nasim, R. Fatemi, Chong Kim, K. Yip, J. S. Wang, B. Pawlik, Todd Kinghorn, J. B. Singh, D. Tlusty, H. Liu, Sergey Voloshin, Xiaofeng Luo, Guo-Liang Ma, E. P. Sichtermann, Li Yi, K. Krueger, R. Lacey, H. G. Ritter, Xinyue Ju, Peter Q. Liu, Vitaly Okorokov, Nilay Shah, W. Guryn, P. Seyboth, David Stewart, G. Eppley, A. H. Tang, Pengdong Wang, Hanna Paulina Zbroszczyk, Lukas Holub, Bedangadas Mohanty, Justin Ewigleben, G. Odyniec, E. Hoffman, Rafal Sikora, P. Kravtsov, Fuwang Shen, Zebo Tang, I. Kisel, K. Jiang, T. G. Dedovich, Bernd Surrow, Wei Xie, N. Elsey, J. Porter, L. C. Bland, Sevil Salur, A. Jentsch, J. Fedorisin, Jan Vanek, Leszek Adamczyk, W. He, M. Kelsey, C. Zhong, J. Pluta, Z. Chang, W. B. Schmidke, M. Cherney, N. Chankova-Bunzarova, J. D. Nam, Zuojia Wang, A. Aparin, T. Ullrich, Lokesh Kumar, Hua Pei, C-Q. Li, P. Sorensen, M. S. Daugherity, Chi Yang, X. G. He, C. Perkins, Q. H. Xu, M. Calderon De La Barca Sanchez, A. I. Hamad, C. A. Gagliardi, Sedigheh Jowzaee, W. Li, V. Bairathi, Skipper Kagamaster, L. Ma, R. Kunnawalkam Elayavalli, Anju Bhasin, R. Reed, N. R. Sahoo, J. D. Brandenburg, D. G. Underwood, H. S. Xu, Z. J. Zhang, Christina Markert, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Y. Xu, D. Kincses, Rene Bellwied, M. Sergeeva, N. Schmitz, B.R. Schweid, Z. Chen, H. S. Matis, Z. Zhang, Madan M. Aggarwal, Y. Hong, Fuqiang Wang, D. Isenhower, A. Pandav, J. R. Adams, Susumu Sato, E. Shahaliev, S. Choudhury, K. Kauder, L. Didenko, I. Chakaberia, Z. Yang, R. E. Tribble, K. Kang, J. Cheng, Y. Lin, L. V. Nogach, E. C. Aschenauer, Siwei Luo, D. Kalinkin, Zhigang Xiao, Frank Jm Geurts, S. Margetis, A. Lebedev, T. Huang, W. Solyst, N. G. Minaev, Samuel Heppelmann, M. Nie, K. N. Barish, Z. Moravcova, W. W. Jacobs, T. J. Humanic, R. Witt, K. Nayak, J. Lauret, T. Galatyuk, X. Dong, J. H. Thomas, Y. Fisyak, D. Zhang, Yunpeng Liu, Derek Anderson, N. Kulathunga Mudiyanselage, C. Zhou, R. Esha, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, B. J. Summa, T. Tarnowsky, Z. Tu, A. Hamed, S. Esumi, M. I. Nagy, F-H. Chang, Q. Yang, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, Hiroyuki Sako, L. Fulek, P. Szymanski, Xiaoyu Liu, Yawen Wang, Tong Liu, G. Agakishiev, D. Cebra, Arghya Chatterjee, Yunlan Ji, Roland Laszlo Pinter, H. J. Crawford, S. Mioduszewski, Y. Li, B. Kimelman, R. S. Longacre, G. Wang, Zhanwen Zhu, X. Huang, A. Kechechyan, Lawrence Pinsky, S. Kabana, G. S. Averichev, E. G. Judd, D. Kapukchyan, D. Keane, A. A. Derevschikov, M. L. Kabir, Prithwish Tribedy, B. K. Srivastava, D. Mallick, Y. H. Leung, J. Rusnak, Nikolai Smirnov, M. Csanad, Isaac Mooney, Xiangming Sun, J. Jia, Shize Yang, W. Christie, M. Kocan, P. Federic, Xiaofeng Zhu, Ying Liang, T. Nonaka, N. Herrmann, Arabinda Behera, L. Ruan, S. Lan, Yinina Ma, F. Seck, I. G. Alekseev, M. A. Lisa, Subhash Singha, Andrey Vasiliev, J. Engelage, M. Posik, Shengli Huang, Jana Bielcikova, G. Igo, S. Ramachandran, A. Ogawa, B. K. Chan, Michal Sumbera, A. A. P. Suaide, D. A. Morozov, H. M. Spinka, X.G. Li, G. Nigmatkulov, J. L. Romero, O. Eyser, Catherine Tomkiel, J. C. Webb, J. L. Drachenberg, Janet Elizabeth Seger, J. Butterworth, I. G. Bordyuzhin, Olga Evdokimov, M. Tokarev, I. Vassiliev, Z. Ye, Lukas Kramarik, J. M. Landgraf, N. Xu, P. Filip, D. Chen, Hengshan Qiu, R. Seto, E. Finch, Y. F. Xu, I. M. Deppner, I. Upsal, S. W. Wissink, D. Neff, Y. Zhang, M. Strikhanov, G. D. Westfall, J. A. Mazer, S. K. Radhakrishnan, Jay Roberts, F. Liu, Miroslav Simko, B. S. Page, Maria Zurek, P. V. Shanmuganathan, Mariusz Przybycien, J. Sandweiss, Y. Yang, H. W. Ke, T. D. S. Stanislaus, Yicheng Feng, D. P. Kikola, L. K. Kosarzewski, J. C. Dunlop, L. Wen, M. U. Ashraf, C. Jena, Zubayer Ahammed, H. H. Wieman, B. Stringfellow, R. D. Majka, Q. Y. Shou, H. Z. Huang, S. Vokal, J. M. Nelson, N. K. Pruthi, R. Pak, W. J. Llope, G. Xie, J. Adam, A. Attri, C. J. Feng, P. Huo, T. Edmonds, Y. J. Sun, S. Fazio, Xuliang Chen, Maria Stefaniak, Joseph Kwasizur, M. Shao, G. Van Buren, S. S. Shi, Jing-Han Chen, Arkadiy Taranenko, Yong Wu, A. Gibson, S. Zhang, Alexander Kiselev, P. Chaloupka, Ting Lin, Z. J. Xu, S. Trentalange, and M. Chevalier
Subjects: Physics, Meson, Star (game theory), Nuclear Theory, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Hadronization, Baryon, Nuclear physics, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report on the first measurement of the charmed baryon Λ_{c}^{±} production at midrapidity (|y
Published: 2020
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17. Underlying event measurements in p+p collisions at s=200 GeV at RHIC

Author: F. G. Atetalla, X. Zhu, Xiangming Sun, A. H. Tang, Christina Markert, Lokesh Kumar, Lawrence Pinsky, Wen-Qing Shen, H. S. Matis, Z. Chang, H. Sako, P. C. Weidenkaff, Jaroslav Adam, Lukas Holub, Bedangadas Mohanty, Siwei Luo, L. K. Kosarzewski, Y. H. Leung, D. Kincses, Saskia Mioduszewski, Shusu Shi, S. Lan, Zhongbin Xu, K. Gopal, Z. Moravcova, S. Vokal, Yue Liang, F. Seck, Lanny Ray, Robert E. Tribble, Xiaolong Chen, Arabinda Behera, B. K. Chan, Michal Sumbera, M. Posik, Benjamin Schweid, T. J. Humanic, Catherine Tomkiel, Hank Crawford, D. Neff, Lukas Kramarik, Paul Sorensen, J. Lauret, N. K. Pruthi, G. Agakishiev, A. Hamed, Audrey Francisco, Sooraj Krishnan Radhakrishnan, Rongrong Ma, Xiaoyu Liu, E. G. Judd, T. G. Dedovich, Nihar Sahoo, S. Horvat, D. Cebra, J. Rusnak, E. Finch, Yevheniia Khyzhniak, S. Trentalange, Joseph Kwasizur, S. Stanislaus, L. Kochenda, H. Liu, Z. Tu, A. I. Hamad, Sedigheh Jowzaee, Dave Underwood, Yuanjing Ji, Zhanwen Zhu, M. Kocan, L. Ruan, C. J. Feng, G. Eppley, Joseph Adams, J. Engelage, G. Nigmatkulov, F. Videbæk, James Brandenburg, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, Yi Wang, T. Nonaka, Wei Li, David Stewart, Ivan Kisel, Declan Keane, Jiangyong Jia, D. P. Kikola, Long Ma, B. Stringfellow, J. C. Dunlop, L. Wen, Isaac Upsal, Roy A. Lacey, T. Edmonds, J. Pluta, K. N. Barish, Wei Xie, J. D. Nam, Pengfei Wang, Alexander Kiselev, B. Schmidke, Chris Perkins, N. Chankova-Bunzarova, Skipper Kagamaster, Subhash Singha, S. Fazio, Chitrasen Jena, Sevil Salur, Yanfang Liu, Roland Laszlo Pinter, R. Fatemi, A. Aparin, Yifan Hong, Yu Zhang, J. W. Harris, Z. Ye, M. S. Daugherity, I. G. Bordyuzhin, J. M. Landgraf, Rene Bellwied, P. V. Shanmuganathan, D. Chen, Dmitry Morozov, Yifei Zhang, Diana Pawlowska, J. Fedorisin, Zhiwan Xu, Isaac Mooney, Shenghui Zhang, Todd Kinghorn, Maowu Nie, Song Zhang, T. Tarnowsky, Ming Shao, B. Pawlik, Zebo Tang, I. G. Alekseev, William Jacobs, E. P. Sichtermann, E. Shahaliev, H. W. Ke, Zubayer Ahammed, N. S. Lukow, M. A. Lisa, Alexander Vasiliev, L. Fulek, M. Strikhanov, D. Mallick, L. C. Bland, Xiaofeng Luo, Guo-Liang Ma, A. Kechechyan, Norbert Schmitz, M. Cherney, Yaping Wang, Rosi Reed, D. Kalinkin, Y. Xu, Marton Imre Nagy, J. H. Thomas, S. Heppelmann, Xin Li, B. J. Summa, Yuliang Sun, P. Chaloupka, I. Vassiliev, Ting Lin, Nu Xu, Li Yi, Z. P. Zhang, Hua Pei, S. K. Tripathy, G. Igo, Pavol Federic, A. A. Derevschikov, Feng-Han Chang, Gary Westfall, Raghav Kunnawalkam Elayavalli, Shu He, A. Gibson, G. Odyniec, Jing-Han Chen, Kevin Adkins, Z. Y. Zhang, Qiye Shou, Kejun Kang, L. V. Nogach, Muhammad Usman Ashraf, J. Sandweiss, S. Kabana, Chi Yang, Jian-Song Wang, Mate Csanad, Nasim, P. Kravtsov, Fuwang Shen, Peng Liu, Wlodek Guryn, Y. Panebratsev, Nalinda Kulathunga Mudiyanselage, Saehanseul Oh, D. Grosnick, Alexandre Alarcon Do Passo Suaide, Qinghua Xu, Yi-Fei Xu, X. H. He, Niseem Magdy Abdelwahab Abdelrahman, Maksym Zyzak, Z. Wang, S. Ramachandran, D. N. Svirida, Janet Elizabeth Seger, Joel Anthony Mazer, Z. Yang, O. D. Tsai, Cheng Li, D. Kapukchyan, R. Pak, Chensheng Zhou, Norbert Herrmann, Spiros Margetis, O. Eyser, Xinyue Ju, Zhen Liu, K. Kauder, A. Taranenko, Sergei A. Voloshin, Feng Liu, Kishora Nayak, Maria Stefaniak, J. Putschke, Y. Fisyak, Zhigang Xiao, D. Tlusty, Jagbir Singh, T. Huang, J. M. Butterworth, D. Isenhower, Z. Chen, J. C. Webb, Yuanjing Li, G. S. Averichev, Derek Anderson, I. M. Deppner, H. Qiu, M. Tokarev, Yang Yang, Matthew Kelsey, T. Ullrich, Hans Georg Ritter, A. Ogawa, Anju Bhasin, Roli Esha, R. Seto, Samuel Heppelmann, P. Szymanski, N. G. Minaev, Daniel Nemes, Tong Liu, Chong Kim, Xinjie Huang, B. Kimelman, Peifeng Liu, Jie Zhao, H. H. Wieman, W. Solyst, Prithwish Tribedy, B. K. Srivastava, Juan M. Romero, H. Z. Huang, Dingwei Zhang, A. Pandav, M. Chevalier, Y. Hu, E. Hoffman, Rafal Sikora, Shengli Huang, P. Filip, P. Seyboth, Hal Spinka, A. Lebedev, J. L. Drachenberg, M. Sergeeva, Jana Bielcikova, Olga Evdokimov, Annika Ewigleben, Manuel Calderon De La Barca Sanchez, Gang Wang, Jan Vanek, Leszek Adamczyk, Gene Van Buren, Susumu Sato, W. Zha, Nikolai Smirnov, Xiaoping Zhang, T. Ljubicic, Kun Jiang, J. Porter, Jay Roberts, Zhenyu Ye, Hao-jie Xu, Brian Page, Maria Zurek, H. Caines, A. V. Brandin, W. He, Bill Christie, K. Krueger, Jianping Cheng, A. Quintero, Subikash Choudhury, Yicheng Feng, Takafumi Niida, Vipul Bairathi, R. Witt, Irakli Chakaberia, Neha Shah, C. Zhong, E. C. Aschenauer, Arghya Chatterjee, L. Didenko, X. Dong, Jeong-Hun Lee, Miroslav Simko, Ron Longacre, Mariusz Przybycien, Shuai Yang, Jaroslav Bielcik, O. V. Rogachevskiy, Vitalii Okorokov, Yang Wu, Yufu Lin, Frank Jm Geurts, T. Galatyuk, Guannan Xie, R. Lednicky, Hanna Paulina Zbroszczyk, Qian Yang, Richard Daniel Majka, Y. K. Sun, Bernd Surrow, K. Yip, S. W. Wissink, ShinIchi Esumi, N. Elsey, Latiful Kabir, Yu-Gang Ma, C. A. Gagliardi, W. J. Llope, Alexander Jentsch, Madan M. Aggarwal, A. Attri, Fuqiang Wang, P. Huo, and John Nelson
Subjects: Physics, Proton, Transverse momentum, Chatterjee, Underlying event, Mathematical physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Gopal, K; Grosnick, D; Guryn, W; Hamad, AI; Hamed, A | Abstract: Particle production sensitive to nonfactorizable and nonperturbative processes that contribute to the underlying event associated with a high transverse momentum (pT) jet in proton+proton collisions at s=200 GeV is studied with the STAR detector. Each event is divided into three regions based on the azimuthal angle with respect to the highest-pT jet direction: In the leading jet direction ("Toward"), opposite to the leading jet ("Away"), and perpendicular to the leading jet ("Transverse"). In the Transverse region, the average charged particle density is found to be between 0.4 and 0.6 and the mean transverse momentum
Published: 2020
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18. The evolution of the STAR Trigger System

Author: J. Engelage, J. M. Landgraf, W. J. Llope, H. J. Crawford, L. C. Bland, A. Ogawa, Z. J. Xu, M. Ng, C. Perkins, E. G. Judd, Gerard Visser, and J. M. Nelson
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Detector, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Star (graph theory), 01 natural sciences, Luminosity, Upgrade, 0103 physical sciences, Path (graph theory), Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, Instrumentation, Astrophysics::Galaxy Astrophysics
Abstract: The STAR experiment at RHIC has been taking data since 2000. During that time, new detectors have been added, RHIC luminosity has increased, and STAR’s physics goals have become more focused. The Trigger System has evolved in parallel to be able to provide more precise triggering capabilities at higher rates. In this article the major improvements to the STAR Trigger are described, along with the future upgrade path.
Published: 2018
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19. First Measurement of Λ_{c} Baryon Production in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, A, Aparin, E C, Aschenauer, M U, Ashraf, F G, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A, Behera, R, Bellwied, A, Bhasin, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, D, Chen, J H, Chen, X, Chen, Z, Chen, J, Cheng, M, Cherney, M, Chevalier, S, Choudhury, W, Christie, H J, Crawford, M, Csanád, M, Daugherity, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, C J, Feng, Y, Feng, P, Filip, E, Finch, Y, Fisyak, A, Francisco, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, K, Gopal, D, Grosnick, W, Guryn, A I, Hamad, A, Hamed, J W, Harris, W, He, X, He, S, Heppelmann, N, Herrmann, E, Hoffman, L, Holub, Y, Hong, S, Horvat, Y, Hu, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, D, Isenhower, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, M L, Kabir, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, B, Kimelman, D, Kincses, T A, Kinghorn, I, Kisel, A, Kiselev, A, Kisiel, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, S, Lan, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, Y H, Leung, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, Y, Lin, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, R S, Longacre, N S, Lukow, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, J A, Mazer, N G, Minaev, S, Mioduszewski, B, Mohanty, I, Mooney, Z, Moravcova, D A, Morozov, M, Nagy, J D, Nam, Md, Nasim, K, Nayak, D, Neff, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, G, Odyniec, A, Ogawa, S, Oh, V A, Okorokov, B S, Page, R, Pak, A, Pandav, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, L, Pinsky, R L, Pintér, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, H, Qiu, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, N R, Sahoo, H, Sako, S, Salur, J, Sandweiss, S, Sato, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, F, Shen, W Q, Shen, S S, Shi, Q Y, Shou, E P, Sichtermann, R, Sikora, M, Simko, J, Singh, S, Singha, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, M, Sumbera, B, Summa, X M, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, J S, Wang, P, Wang, Y, Wang, Z, Wang, J C, Webb, P C, Weidenkaff, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Y, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, H, Zbroszczyk, W, Zha, D, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z J, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Abstract: We report on the first measurement of the charmed baryon Λ_{c}^{±} production at midrapidity (|y|1) in Au+Au collisions at sqrt[s_{NN}]=200 GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider. The Λ_{c}/D^{0} [denoting (Λ_{c}^{+}+Λ_{c}^{-})/(D^{0}+D[over ¯]^{0})] yield ratio is measured to be 1.08±0.16 (stat)±0.26 (sys) in the 0%-20% most central Au+Au collisions for the transverse momentum (p_{T}) range 3p_{T}6 GeV/c. This is significantly larger than the pythia model calculations for p+p collisions. The measured Λ_{c}/D^{0} ratio, as a function of p_{T} and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in Au+Au collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured Λ_{c}/D^{0} ratio.
Published: 2020

20. Bulk properties of the system formed in Au+Au collisions at sNN=14.5 GeV at the BNL STAR detector

Author: A. V. Brandin, A. Gibson, C. Zhong, J. C. Dunlop, L. Wen, N. Xu, P. Filip, Z. Chang, Zubayer Ahammed, Y. Fisyak, Vipul Bairathi, G. D. Westfall, J. M. Butterworth, S. Lan, F. Seck, Lin Ma, J. C. Webb, Qi Yang, Zuojia Wang, Irakli Chakaberia, M. Posik, Y. Hong, Muhammad Usman Ashraf, Zhenyu Chen, M. Sergeeva, Q. Y. Shou, Xiaoyu Liu, A. Pandav, Guannan Xie, Arabinda Behera, H. M. Spinka, H. Sako, Jana Bielcikova, Xuan Zhang, J. L. Romero, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, E. Finch, Sergey Voloshin, Q. H. Xu, Xinyue Ju, Susumu Sato, Hao Qiu, R. Pak, M. I. Nagy, Y. F. Wu, W. Solyst, Chong Kim, Somnath Choudhury, M. Tokarev, J. Rusnak, M. Kocan, Hanna Paulina Zbroszczyk, Alexander Kiselev, D. Kapukchyan, K. Jiang, Y. Wang, Mate Csanad, L. Ruan, E. G. Judd, J. Porter, F. Liu, Miroslav Simko, N. Kulathunga Mudiyanselage, Mariusz Przybycien, B. S. Page, Avishek Chatterjee, Ivan Kisel, P. Seyboth, H. G. Ritter, P. Szymanski, D. P. Kikola, J. R. Adams, Wei Xie, L. S. Pinsky, K. Yip, J. D. Nam, Joel Anthony Mazer, Z. Yang, B. Stringfellow, A. Aparin, R. Witt, Frank Jm Geurts, T. Galatyuk, Z. J. Zhang, T. D. S. Stanislaus, E. Hoffman, H. H. Wieman, Jaroslav Bielcik, S. He, R. Reed, J. S. Wang, Jan Vanek, N. Schmitz, E. Shahaliev, L. V. Nogach, Md. Nasim, Rafal Sikora, Maria Stefaniak, N. Magdy, R. D. Majka, S. Mioduszewski, Yunlan Ji, R. S. Longacre, Lukas Holub, Bedangadas Mohanty, G. Agakishiev, D. Tlusty, J. L. Drachenberg, Siwei Luo, Y. Hu, O. V. Rogachevskiy, Y. Li, Alexandre Alarcon Do Passo Suaide, I. Vassiliev, F. Videbæk, Prithwish Tribedy, B. K. Srivastava, J. H. Thomas, P. Federic, W. J. Llope, C. Zhou, P. Chaloupka, Ting Lin, Alexander Jentsch, Peng Huo, M. L. Kabir, S. Trentalange, D. Cebra, Niladribihari Sahoo, Tong Liu, W. Christie, F-H. Chang, Shengli Huang, Olga Evdokimov, Madan M. Aggarwal, Subhash Singha, Andrey Vasiliev, X.G. Li, Fuqiang Wang, D. K. Mishra, Zhigang Xiao, T. Huang, Yunpeng Liu, Derek Anderson, Z. Ye, G. Wang, G. Igo, N. G. Minaev, Maowu Nie, X. Huang, A. Kechechyan, Zhanwen Zhu, T. Nonaka, W. Guryn, A. Attri, X. M. Sun, R. Lacey, B. Kimelman, X. C. Chen, G. S. Averichev, B. Pawlik, Z. Liu, Janet Elizabeth Seger, J. B. Singh, K. Kauder, A. Taranenko, P. Sorensen, Robert Licenik, F. G. Atetalla, O. D. Tsai, D. Kalinkin, S. Heppelmann, B. J. Summa, Jay Roberts, Jiangyong Jia, Maria Zurek, Joseph Kwasizur, D. Zhang, I. M. Deppner, Anthony Robert Timmins, Anju Bhasin, Adam Ryszard Kisiel, P. C. Weidenkaff, I. G. Alekseev, Y. F. Xu, S. Esumi, K. Krueger, Zebo Tang, Isaac Mooney, K. Kang, T. Niida, M. S. Daugherity, M. Shao, G. Van Buren, Y. Yang, Vitaly Okorokov, M. A. Lisa, W. Q. Shen, K. Gopal, T. G. Dedovich, S. Zhang, A. Lebedev, L. Adamczyk, Roland Laszlo Pinter, Yicheng Feng, H. J. Crawford, J. Fedorisin, B. K. Chan, J. Engelage, Michal Sumbera, J. K. Adkins, G. Nigmatkulov, Bernd Surrow, Z. Moravcova, H. W. Ke, L. Fulek, N. Elsey, S. S. Shi, Y. J. Sun, Catherine Tomkiel, Nilay Shah, R. Fatemi, Todd Kinghorn, N. Herrmann, W. B. Schmidke, C. A. Gagliardi, S. Ramachandran, N. K. Pruthi, S. Kabana, G. Eppley, Chitrasen Jena, O. Eyser, J. M. Landgraf, J. M. Nelson, C. Perkins, H. Liu, S. W. Wissink, J. Pluta, M. Zyzak, D. Neff, Y. Zhang, I. Upsal, D. Chen, D. G. Underwood, M. Strikhanov, D. N. Svirida, Y. G. Ma, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, David Stewart, Benjamin Schweid, Rene Bellwied, T. J. Humanic, A. Hamed, R. E. Tribble, M. Cherney, H. Z. Huang, Diana Pawlowska, S. Vokal, C. Yang, Sevil Salur, G. Odyniec, J. Sandweiss, Hua Pei, Y. Lin, S. K. Tripathy, Audrey Francisco, J. Cheng, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, Roli Esha, D. A. Morozov, T. Edmonds, Daniel Nemes, Jie Zhao, S. Horvat, D. Keane, W. Zha, Peng Liu, Y. Panebratsev, Saehanseul Oh, D. Grosnick, D. Kincses, D. Isenhower, Z. Z. Xu, Nikita Smirnov, K. Nayak, Guo-Liang Ma, Li Yi, P. Kravtsov, Fuwang Shen, C-Q. Li, Christina Markert, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, J. Lauret, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, M. H. Kelsey, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Dukhishyam Mallick, J. Putschke, Xiaofeng Zhu, Ying Liang, J. W. Harris, A. Ogawa, N. S. Lukow, X. G. Luo, A. H. Tang, Pengdong Wang, Lokesh Kumar, Jaroslav Adam, Y. H. Leung, L. C. Bland, W. He, J. D. Brandenburg, L. Didenko, R. Kunnawalkam Elayavalli, R. Seto, K. N. Barish, E. C. Aschenauer, S. Margetis, P. V. Shanmuganathan, T. Tarnowsky, X. Dong, M. Chevalier, Jongmin Lee, R. Ma, A. A. Derevschikov, T. Ljubicic, X. H. He, H. Caines, A. Quintero, E. P. Sichtermann, T. Ullrich, H. S. Xu, and Justin Ewigleben
Subjects: Physics, 010308 nuclear & particles physics, Elliptic flow, 01 natural sciences, Spectral line, Charged particle, Nuclear physics, Pseudorapidity, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Beam energy, STAR detector
Abstract: We report systematic measurements of bulk properties of the system created in Au+Au collisions at sNN=14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). The transverse momentum spectra of π±, K±, and p(p¯) are studied at midrapidity (|y
Published: 2020
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21. Beam-energy dependence of identified two-particle angular correlations in sNN=7.7–200 GeV Au+Au collisions

Author: Mate Csanad, J. B. Singh, Chitrasen Jena, Joel Anthony Mazer, Z. Yang, D. Tlusty, M. Lomnitz, Diana Pawlowska, Roli Esha, Yunlan Ji, T. G. Dedovich, Daniel Nemes, J. W. Harris, S. Horvat, N. S. Lukow, Niladribihari Sahoo, Tong Liu, B. Huang, Guo-Liang Ma, X. C. Chen, D. Kincses, X. G. Luo, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Catherine Tomkiel, Jaroslav Bielcik, Z. Moravcova, Li Yi, P. Kravtsov, Fuwang Shen, B. Pawlik, A. H. Tang, Pengdong Wang, N. K. Pruthi, Y. Hu, W. Zha, P. Seyboth, I. G. Alekseev, M. A. Lisa, J. C. Mei, A. V. Brandin, O. Matonoha, O. V. Rogachevskiy, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, Qi Yang, Zuojia Wang, Q. H. Xu, C. Yang, E. P. Sichtermann, Muhammad Usman Ashraf, W. J. Llope, G. Eppley, S. Zhang, Roland Laszlo Pinter, H. J. Crawford, S. W. Wissink, D. Neff, Y. Zhang, Vipul Bairathi, Sergey Voloshin, Xinyue Ju, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, J. Putschke, Xiaofeng Zhu, Ying Liang, N. Kulathunga Mudiyanselage, J. Engelage, D. G. Underwood, Jan Vanek, Irakli Chakaberia, J. Pluta, M. Zyzak, C. Zhou, J. K. Adkins, N. Magdy, Zebo Tang, N. Chankova-Bunzarova, K. Jiang, W. Li, Skipper Kagamaster, Y. Wang, I. Vassiliev, A. Ogawa, G. Nigmatkulov, Rene Bellwied, W. Christie, R. Fatemi, J. R. Adams, Todd Kinghorn, Alexander Kiselev, D. Keane, Alexander Jentsch, Lukas Holub, Bedangadas Mohanty, Vitaly Okorokov, Z. Chang, C-Q. Li, J. Cheng, Dukhishyam Mallick, Y. F. Xu, J. M. Landgraf, Christina Markert, R. E. Tribble, O. Rusnakova, Jize Zhao, Subhash Singha, Andrey Vasiliev, Y. Li, I. Upsal, J. Rusnak, Z. Liu, Bernd Surrow, A. Attri, L. V. Nogach, T. Ullrich, Y. Lin, H. S. Matis, Peng Huo, D. Chen, L. K. Kosarzewski, C. Perkins, X.G. Li, N. Elsey, R. S. Longacre, W. W. Jacobs, G. Agakishiev, M. Strikhanov, W. Guryn, M. Cherney, Janet Elizabeth Seger, S. Lan, R. Lacey, F. Seck, J. Lauret, M. Kocan, I. M. Deppner, P. Federic, L. Ruan, Guannan Xie, P. Chaloupka, L. S. Pinsky, K. Yip, Lokesh Kumar, Ting Lin, Xuan Zhang, Anju Bhasin, F. G. Atetalla, M. L. Kabir, O. D. Tsai, Xiaoyu Liu, Z. Ye, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Siwei Luo, D. Cebra, Hua Pei, S. K. Tripathy, H. S. Xu, A. J. Bassill, M. Posik, Z. Tu, J. Fedorisin, J. S. Wang, Jaroslav Adam, W. B. Schmidke, P. C. Weidenkaff, S. Trentalange, K. Kang, T. Niida, Hanna Paulina Zbroszczyk, C. A. Gagliardi, G. Igo, Maowu Nie, X. Huang, M. M. Mondal, Zhanwen Zhu, Y. H. Leung, M. Chevalier, A. Lebedev, L. Adamczyk, G. Odyniec, J. Sandweiss, Arabinda Behera, H. M. Spinka, Y. J. Sun, Jongmin Lee, Y. Hong, L. C. Bland, S. Fazio, Zongye Zhang, A. Kechechyan, W. Q. Shen, K. Gopal, Frank Jm Geurts, T. Galatyuk, E. G. Judd, H. Liu, K. Kauder, A. Taranenko, Madan M. Aggarwal, Fuqiang Wang, T. Nonaka, I. G. Bordyuzhin, Maria Stefaniak, Justin Ewigleben, A. Gibson, C. Zhong, M. H. Kelsey, S. Kabana, Somnath Choudhury, A. Pandav, R. Ma, K. Meehan, R. Reed, Jiangyong Jia, David Stewart, Sevil Salur, M. Sergeeva, J. Porter, D. N. Svirida, Peng Liu, Benjamin Schweid, T. J. Humanic, A. Hamed, T. Ljubicic, J. M. Butterworth, Isaac Mooney, J. C. Webb, Ivan Kisel, M. Tokarev, Y. Panebratsev, Saehanseul Oh, D. Grosnick, F. Liu, Miroslav Simko, Mariusz Przybycien, Y. Fisyak, D. Zhang, Susumu Sato, Z. J. Zhang, B. S. Page, Avishek Chatterjee, X. H. He, D. Isenhower, X. M. Sun, Z. Z. Xu, P. Sorensen, Hao Qiu, Joseph Kwasizur, D. P. Kikola, W. Solyst, S. Esumi, Nikita Smirnov, K. Nayak, B. Stringfellow, Md. Nasim, R. D. Majka, P. Szymanski, T. D. S. Stanislaus, Y. Yang, Lin Ma, J. L. Drachenberg, M. Shao, G. Van Buren, H. H. Wieman, Nilay Shah, H. Caines, A. Quintero, S. S. Shi, J. H. Thomas, Zhigang Xiao, T. Huang, F-H. Chang, J. M. Nelson, M. S. Daugherity, G. S. Averichev, Y. G. Ma, Yunpeng Liu, H. W. Ke, N. G. Minaev, L. Fulek, Chong Kim, N. Xu, Donald M. Anderson, H. G. Ritter, G. Wang, E. Hoffman, Rafal Sikora, P. Filip, G. D. Westfall, S. Das, E. C. Aschenauer, S. Margetis, X. Dong, N. Herrmann, Olga Evdokimov, Jay Roberts, Maria Zurek, K. Krueger, K. N. Barish, Yicheng Feng, P. V. Shanmuganathan, T. Tarnowsky, D. Kalinkin, A. A. Derevschikov, S. Heppelmann, B. J. Summa, J. C. Dunlop, L. Wen, Zubayer Ahammed, R. Kunnawalkam Elayavalli, S. Ramachandran, O. Eyser, Q. Y. Shou, R. Seto, R. Pak, H. Z. Huang, S. Vokal, Audrey Francisco, R. Witt, W. He, J. D. Brandenburg, S. Mioduszewski, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, L. Didenko, D. A. Morozov, T. Edmonds, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, H. Sako, Jana Bielcikova, J. L. Romero, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, E. Finch, M. I. Nagy, Y. F. Wu, D. Kapukchyan, Wei Xie, J. D. Nam, A. Aparin, N. Schmitz, E. Shahaliev, and F. Videbæk
Subjects: Physics, Proton, 010308 nuclear & particles physics, Chatterjee, Collision system, Transport theory, 01 natural sciences, Nuclear physics, Correlation function (statistical mechanics), Pion, Angular correlation, 0103 physical sciences, 010306 general physics, Beam energy
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Butterworth, J; Caines, H; Sanchez, M Calderon de la Barca; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, F-H; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chen, D; Chen, JH; Chen, X; Cheng, J; Cherney, M; Chevalier, M; Choudhury, S; Christie, W; Crawford, HJ; Csanad, M; Das, S; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Gopal, K; Grosnick, D; Guryn, W; Hamad, AI | Abstract: The two-particle angular correlation functions, $R_2$, of pions, kaons, and protons in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV were measured by the STAR experiment at RHIC. These correlations were measured for both like-sign and unlike-sign charge combinations and versus the centrality. The correlations of pions and kaons show the expected near-side ({\it i.e.}, at small relative angles) peak resulting from short-range mechanisms. The amplitudes of these short-range correlations decrease with increasing beam energy. However, the proton correlation functions exhibit strong anticorrelations in the near-side region. This behavior is observed for the first time in an A+A collision system. The observed anticorrelation is $p_{T}$-independent and decreases with increasing beam energy and centrality. The experimental results are also compared to the Monte Carlo models UrQMD, Hijing, and AMPT.
Published: 2020
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22. Non-monotonic energy dependence of net-proton number fluctuations

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, A, Aparin, E C, Aschenauer, M U, Ashraf, F G, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A, Behera, R, Bellwied, A, Bhasin, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, D, Chen, J, Chen, J H, Chen, X, Chen, Z, Chen, J, Cheng, M, Cherney, M, Chevalier, S, Choudhury, W, Christie, X, Chu, H J, Crawford, M, Csanád, M, Daugherity, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, S, Esumi, O, Evdokimov, A, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, C J, Feng, Y, Feng, P, Filip, E, Finch, Y, Fisyak, A, Francisco, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, K, Gopal, X, Gou, D, Grosnick, W, Guryn, A I, Hamad, A, Hamed, S, Harabasz, J W, Harris, S, He, W, He, X H, He, Y, He, S, Heppelmann, N, Herrmann, E, Hoffman, L, Holub, Y, Hong, S, Horvat, Y, Hu, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, D, Isenhower, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, M L, Kabir, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, B, Kimelman, D, Kincses, T A, Kinghorn, I, Kisel, A, Kiselev, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, S, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, S, Lan, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, Y H, Leung, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, Y, Lin, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, R S, Longacre, N S, Lukow, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, J A, Mazer, N G, Minaev, S, Mioduszewski, B, Mohanty, I, Mooney, Z, Moravcova, D A, Morozov, M, Nagy, J D, Nam, Md, Nasim, K, Nayak, D, Neff, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, A S, Nunes, G, Odyniec, A, Ogawa, S, Oh, V A, Okorokov, B S, Page, R, Pak, A, Pandav, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, L, Pinsky, R L, Pintér, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, H, Qiu, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, N R, Sahoo, H, Sako, S, Salur, J, Sandweiss, S, Sato, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, A I, Sheikh, W Q, Shen, S S, Shi, Y, Shi, Q Y, Shou, E P, Sichtermann, R, Sikora, M, Simko, J, Singh, S, Singha, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, M, Sumbera, B, Summa, X M, Sun, X, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, J S, Wang, P, Wang, Y, Wang, Z, Wang, J C, Webb, P C, Weidenkaff, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Y, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, Y, Yu, H, Zbroszczyk, W, Zha, C, Zhang, D, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z J, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Subjects: Physics, Quantum chromodynamics, Nuclear Theory, COLISÕES, General Physics and Astronomy, FOS: Physical sciences, Monotonic function, Function (mathematics), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Critical point (thermodynamics), 0103 physical sciences, Kurtosis, Atomic number, Nuclear Experiment (nucl-ex), 010306 general physics, Relativistic Heavy Ion Collider, Nuclear Experiment, Energy (signal processing)
Abstract: Non-monotonic variation with collision energy ($\sqrt{s_{\rm NN}}$) of the moments of the net-baryon number distribution in heavy-ion collisions, related to the correlation length and the susceptibilities of the system, is suggested as a signature for the Quantum Chromodynamics (QCD) critical point. We report the first evidence of a non-monotonic variation in kurtosis times variance of the net-proton number (proxy for net-baryon number) distribution as a function of \rootsnn with 3.1$\sigma$ significance, for head-on (central) gold-on-gold (Au+Au) collisions measured using the STAR detector at RHIC. Data in non-central Au+Au collisions and models of heavy-ion collisions without a critical point show a monotonic variation as a function of $\sqrt{s_{\rm NN}}$., Comment: 12 Pages, 9 Figures and 5 Tables (published version)
Published: 2020
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23. First Observation of the Directed Flow of D0 and D0¯ in Au+Au Collisions at sNN=200 GeV

Author: A. V. Brandin, D. Tlusty, Peng Huo, C-Q. Li, Christina Markert, D. Smirnov, Vipul Bairathi, O. Rusnakova, H. S. Matis, A. K. Bhati, Yawen Wang, R. Witt, D. Keane, Nikolai Smirnov, W. Guryn, Z. Moravcova, B. J. Summa, R. Lacey, S. Mioduszewski, W. W. Jacobs, J. Engelage, H. Z. Huang, S. Vokal, F. Liu, D. A. Morozov, T. Edmonds, Mariusz Przybycien, S. Ramachandran, Q. H. Xu, O. Eyser, J. Lauret, J. L. Romero, Prithwish Tribedy, B. K. Srivastava, G. Nigmatkulov, Yunlan Ji, S. Fazio, Xuliang Chen, Y. Yang, J. Fedorisin, Lukas Kramarik, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, E. Finch, Arka Chatterjee, T. Tarnowsky, Z. Tu, Chong Kim, F. G. Atetalla, O. D. Tsai, J. M. Landgraf, N. Xu, Maria Stefaniak, Muhammad Usman Ashraf, B. Pawlik, J. C. Dunlop, L. Wen, P. Filip, R. D. Majka, H. G. Ritter, M. A. Szelezniak, Sergey Voloshin, J. L. Drachenberg, M. Calderon De La Barca Sanchez, A. I. Hamad, Y. Li, S. Singha, C. Jena, Zubayer Ahammed, B. Huang, Xinyue Ju, M. Strikhanov, Rafal Sikora, Sedigheh Jowzaee, Tetsuro Sugiura, Y. J. Sun, C. Dilks, G. D. Westfall, J. Schambach, N. K. Pruthi, W. Q. Shen, K. Gopal, D. G. Underwood, K. Jiang, Yong Wu, Q. Y. Shou, Anju Bhasin, G. Xie, A. J. Bassill, R. Pak, M. Csanad, G. Eppley, M. Sergeeva, T. J. Humanic, R. Esha, H. Liu, David Stewart, Nilay Shah, R. S. Longacre, J. Pluta, J. Sandweiss, Joseph Kwasizur, Olga Evdokimov, K. Kang, T. Niida, Xiaofeng Zhu, Ying Liang, I. Upsal, Abdel Nasser Tawfik, N. Chankova-Bunzarova, W. Li, Y. Fisyak, A. Lebedev, Skipper Kagamaster, D. Kapukchyan, A. Ogawa, Jay Roberts, Siwei Luo, B. S. Page, Maria Zurek, J. B. Singh, M. Nie, Sevil Salur, Y. Panebratsev, H. W. Ke, P. V. Shanmuganathan, J. W. Harris, Saehanseul Oh, D. Grosnick, M. Shao, G. Van Buren, S. S. Shi, Yicheng Feng, L. Ma, Rene Bellwied, R. E. Tribble, D. P. Kikola, A. Gibson, S. Zhang, B. Stringfellow, L. Zhang, Zhigang Xiao, P. Szymanski, T. Huang, D. Mallick, Z. Yang, G. Igo, J. Cheng, Jiangyong Jia, J. K. Adkins, Nasim, Yunpeng Liu, Wei Xie, Derek Anderson, T. G. Dedovich, A. Jentsch, K. Yip, S. K. Radhakrishnan, Zongye Zhang, L. Fulek, N. G. Minaev, I. G. Bordyuzhin, A. Aparin, Isaac Mooney, M. M. Mondal, L. C. Bland, G. Wang, Samuel Heppelmann, B. Tu, J. Butterworth, R. Fatemi, K. Nayak, L. He, Y. G. Ma, Jing-Han Chen, Todd Kinghorn, J. Bryslawskyj, Y. F. Xu, Z. Ye, J. A. Mazer, Tong Liu, Daniel Nemes, Jie Zhao, X. Huang, A. Kechechyan, S. Horvat, N. Schmitz, E. Shahaliev, Shize Yang, J. Rusnak, Chi Yang, N. Herrmann, K. Krueger, M. Kocan, M. Simko, L. Ruan, S. Siejka, Y. Hong, A. Lipiec, D. N. Svirida, W. Zha, A. H. Tang, Pengdong Wang, Benjamin Schweid, P. Seyboth, Pradip Kumar Sahu, T. Nonaka, J. R. Adams, Jan Vanek, Leszek Adamczyk, P. Federic, N. R. Sahoo, F. Seck, M. Posik, Arkadiy Taranenko, I. Bunzarov, O. Matonoha, M. Tokarev, N. Kulathunga Mudiyanselage, M. Cherney, Xiangming Sun, Arabinda Behera, H. M. Spinka, Lokesh Kumar, Hua Pei, P. Chaloupka, Ting Lin, Z. J. Xu, S. Trentalange, T. D. S. Stanislaus, J. H. Thomas, L. V. Nogach, Sumit R. Das, H. H. Wieman, Giacomo Contin, F-H. Chang, Q. Yang, K. Kauder, G. S. Averichev, Anthony Robert Timmins, Adam Ryszard Kisiel, Roland Laszlo Pinter, H. J. Crawford, Xiaofeng Luo, Guo-Liang Ma, Li Yi, P. Kravtsov, Fuwang Shen, Vitaly Okorokov, Bernd Surrow, N. Elsey, F. Videbæk, Z. Chang, W. B. Schmidke, Sukalyan Chattopadhyay, C. A. Gagliardi, Jaroslav Bielcik, Diana Pawlowska, O. V. Rogachevskiy, A. Quintero, R. Licenik, Xuan Zhang, R. Aoyama, Sujit Kumar Tripathy, Madan M. Aggarwal, Fuqiang Wang, Hanna Paulina Zbroszczyk, Zebo Tang, J. Putschke, Leo Clifford Greiner, D. K. Mishra, M. Kelsey, D. Kalinkin, C. Perkins, R. Kunnawalkam Elayavalli, R. Reed, I. Vassiliev, D. Zhang, Anik Gupta, Maksym Zyzak, A. Hamed, S. Esumi, Frank Jm Geurts, T. Galatyuk, C. Zhou, K. Meehan, J. C. Webb, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Catherine Tomkiel, R. Seto, Justin Ewigleben, L. K. Kosarzewski, G. Odyniec, S. W. Wissink, J. M. Nelson, W. J. Llope, Y. Zhang, C. Zhong, J. Adam, K. N. Barish, A. Attri, Lukas Holub, Bedangadas Mohanty, P. Liu, Z. Liu, A. A. Derevschikov, Xiaoyu Liu, E. G. Judd, Jana Bielcikova, P. Sorensen, J. D. Brandenburg, L. Didenko, I. Chakaberia, W. Solyst, Jongmin Lee, R. L. Ray, R. Ma, T. Ljubicic, Niseem Magdy, H. Caines, M. Lomnitz, I. G. Alekseev, J. Porter, Ivan Kisel, M. A. Lisa, W. Christie, J. C. Mei, S. L. Huang, E. C. Aschenauer, S. Margetis, X. Dong, H. Xu, E. P. Sichtermann, T. Ullrich, G. Agakishiev, D. Cebra, Zhanwen Zhu, S. Kabana, Andrey Vasiliev, X.G. Li, Janet Elizabeth Seger, and I. M. Deppner
Subjects: Physics, Quantum chromodynamics, Meson, Star (game theory), General Physics and Astronomy, Absolute value, 01 natural sciences, Nuclear physics, Flow (mathematics), 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, STAR detector
Abstract: We report the first measurement of rapidity-odd directed flow (v_{1}) for D^{0} and D^{0}[over ¯] mesons at midrapidity (|y
Published: 2019
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24. Observation of Excess J/ψ Yield at Very Low Transverse Momenta in Au+Au Collisions at sNN=200 GeV and U+U Collisions at sNN=193 GeV

Author: Shize Yang, Kejun Kang, P. Seyboth, F. Seck, Xiaofeng Luo, M. Posik, Arka Chatterjee, Jan Vanek, Leszek Adamczyk, I. K. Yoo, Vitaly Okorokov, H. M. Spinka, Guo-Liang Ma, Xiaoyu Liu, K. Yip, L. C. Bland, G. Eppley, Zongye Zhang, I. G. Bordyuzhin, Bernd Surrow, B. J. Summa, Anik Gupta, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, E. G. Judd, Li Yi, S. K. Radhakrishnan, L. Fulek, D. G. Underwood, Y. Li, S. Singha, N. Elsey, Frank Jm Geurts, T. Galatyuk, Q. H. Xu, N. Kulathunga Mudiyanselage, Chi Yang, Z. Chang, W. B. Schmidke, J. H. Thomas, J. C. Dunlop, L. Wen, J. Pluta, B.R. Schweid, J. Cheng, D. N. Svirida, N. G. Minaev, C. A. Gagliardi, Lukas Holub, Bedangadas Mohanty, P. Federic, Zubayer Ahammed, Muhammad Usman Ashraf, C. Zhou, K. Meehan, Chong Kim, H. G. Ritter, S. Ramachandran, N. Chankova-Bunzarova, Skipper Kagamaster, R. Lacey, Rafal Sikora, K. Kauder, P. Kravtsov, F-H. Chang, Q. Yang, Jaroslav Bielcik, Fuwang Shen, K. N. Barish, O. Eyser, J. A. Mazer, Jaroslav Adam, Sergey Voloshin, X. Huang, A. Kechechyan, Sumit R. Das, C. Zhong, E. C. Aschenauer, S. Margetis, Y. Panebratsev, Q. Y. Shou, L. Ma, O. V. Rogachevskiy, A. Quintero, Joseph Kwasizur, Roli Esha, Rene Bellwied, Saehanseul Oh, D. Grosnick, D. Arkhipkin, A. Hamed, Pradip Kumar Sahu, T. Nonaka, Xinyue Ju, J. Rusnak, L. V. Nogach, Nihar Sahoo, X. Dong, Peter Q. Liu, Daniel Nemes, Jie Zhao, S. Horvat, G. Wang, G. S. Averichev, W. Christie, R. Pak, M. Kocan, J. L. Drachenberg, Olga Evdokimov, M. Zyzak, M. Shao, G. Van Buren, Nasim, S. S. Shi, Zebo Tang, L. Ruan, K. Jiang, Nilay Shah, B. K. Chan, Michal Sumbera, A. A. P. Suaide, J. Porter, Catherine Tomkiel, Tetsuro Sugiura, I. Upsal, Robert Licenik, F. Videbæk, Sujit Kumar Tripathy, B. Huang, R. E. Tribble, Jay Roberts, Jana Bielcikova, M. Tokarev, H. Z. Huang, Yanjun Wu, S. Vokal, T. Todoroki, Y. J. Sun, E. P. Sichtermann, Anthony Robert Timmins, Adam Ryszard Kisiel, N. Herrmann, T. G. Dedovich, Jorn Henning Putschke, Sukalyan Chattopadhyay, Maria Zurek, Madan M. Aggarwal, A. Lipiec, Fuqiang Wang, C. Dilks, D. K. Mishra, Samuel Heppelmann, A. V. Brandin, B. Tu, S. Siejka, S. Fazio, Xuliang Chen, M. Kelsey, M. Csanad, Roland Laszlo Pinter, H. J. Crawford, W. Zha, G. Agakishiev, A. A. Derevschikov, L. Zhang, H. W. Ke, J. K. Adkins, Arabinda Behera, J. W. Harris, Yicheng Feng, D. Kalinkin, R. S. Longacre, F. G. Atetalla, K. Nayak, O. D. Tsai, S. W. Wissink, Y. Zhang, T. D. S. Stanislaus, Xiaofeng Zhu, M. Sergeeva, Ying Liang, JSingh, R. Fatemi, L. He, Vipul Bairathi, J. L. Romero, I. Vassiliev, Lukas Kramarik, Y. Hong, J. H. Chen, Todd Kinghorn, K. Krueger, ShinIchi Esumi, D. Cebra, D. Zhang, E. Finch, Zhigang Xiao, T. Huang, Andrey Vasiliev, A. Ogawa, Siwei Luo, W. Q. Shen, C. Perkins, J. Bryslawskyj, P. V. Shanmuganathan, D. Mallick, H. H. Wieman, X.G. Li, C-Q. Li, T. Edmonds, R. Witt, T. Ullrich, W. Guryn, S. Mioduszewski, P. Chaloupka, I. Kisel, P. Sorensen, A. H. Tang, H. Liu, Pengdong Wang, Christina Markert, Ting Lin, Z. J. Xu, David Stewart, Yunpeng Liu, Derek Anderson, Zhanwen Zhu, G. Igo, Prithwish Tribedy, B. K. Srivastava, D. Smirnov, O. Rusnakova, H. S. Matis, Shengli Huang, M. Cherney, J. Fedorisin, Sevil Salur, M. M. Mondal, I. Bunzarov, S. Trentalange, O. Matonoha, J. D. Brandenburg, S. Kabana, Y. Wang, Y. Fisyak, Lokesh Kumar, Hua Pei, H. S. Xu, K. Oh, Z. Moravcova, W. W. Jacobs, J. Butterworth, J. Lauret, Janet Elizabeth Seger, J. Engelage, Justin Ewigleben, G. Odyniec, Isaac Mooney, J. Jia, N. Xu, P. Filip, Jongmin Lee, G. Nigmatkulov, T. J. Humanic, Z. Ye, A. K. Bhati, D. Keane, M. Nie, Nikolai Smirnov, B. Pawlik, Xiangming Sun, Y. F. Xu, R. L. Ray, Zhao Liu, A. Gibson, R. Ma, R. Lednicky, L. Kochenda, T. Tarnowsky, Yinina Ma, S. Zhang, L. Didenko, I. Chakaberia, P. Szymanski, I. M. Deppner, D. Kapukchyan, T. Ljubicic, G. D. Westfall, Xuan Zhang, J. M. Landgraf, Niseem Magdy, H. Caines, M. Lomnitz, Dmitry Morozov, M. Strikhanov, Anju Bhasin, Wei Li, G. Xie, R. Aoyama, Wei Xie, A. Aparin, Hanna Paulina Zbroszczyk, N. K. Pruthi, A. J. Bassill, N. Schmitz, E. Shahaliev, T. Niida, A. Lebedev, J. C. Webb, J. Sandweiss, J. R. Adams, R. Kunnawalkam Elayavalli, R. Reed, W. Solyst, L. K. Kosarzewski, R. Seto, J. M. Nelson, W. J. Llope, I. G. Alekseev, Alexander Jentsch, M. A. Lisa, J. C. Mei, A. Attri, P. Huo, B. S. Page, D. P. Kikola, B. Stringfellow, F. Liu, Miroslav Simko, Mariusz Przybycien, Y. Yang, R. D. Majka, J. Schambach, and A. Taranenko
Subjects: Physics, Hadron, General Physics and Astronomy, Modification factor, Plasma, 01 natural sciences, Nuclear physics, Transverse plane, 0103 physical sciences, Quark–gluon plasma, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report on the first measurements of J/ψ production at very low transverse momentum (p_{T}
Published: 2019
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25. Polarization of Λ ( Λ¯ ) Hyperons along the Beam Direction in Au+Au Collisions at sNN=200 GeV

Author: D. G. Underwood, J. K. Adkins, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, R. Fatemi, L. He, Todd Kinghorn, P. Sorensen, Nasim, J. Porter, K. Krueger, S. Fazio, Xuliang Chen, Z. Yang, J. Cheng, J. D. Brandenburg, D. Kalinkin, G. Wang, T. J. Humanic, Jorn Henning Putschke, A. V. Brandin, I. G. Alekseev, M. A. Lisa, J. C. Mei, Takafumi Niida, Vipul Bairathi, I. Kisel, Maria Stefaniak, D. Zhang, L. Didenko, I. Chakaberia, F. Liu, Miroslav Simko, M. Cherney, Siwei Luo, Lokesh Kumar, F. Videbæk, Hua Pei, Yawen Wang, J. L. Drachenberg, Mariusz Przybycien, D. Tlusty, G. Eppley, Y. Yang, N. Herrmann, P. Chaloupka, Ting Lin, Z. J. Xu, Olga Evdokimov, Zhigang Xiao, S. Siejka, T. Huang, B. S. Page, L. V. Nogach, Jaroslav Bielcik, Yunpeng Liu, Derek Anderson, D. P. Kikola, Arka Chatterjee, B. K. Chan, Michal Sumbera, R. D. Majka, W. Guryn, I. Upsal, Tong Liu, S. Trentalange, A. A. P. Suaide, P. Seyboth, B. Stringfellow, B. J. Summa, Sukalyan Chattopadhyay, J. Schambach, M. Tokarev, J. Pluta, N. Chankova-Bunzarova, Jay Roberts, W. Li, Catherine Tomkiel, J. H. Thomas, Anju Bhasin, G. Xie, J. C. Webb, A. J. Bassill, K. Kang, G. Agakishiev, Jongmin Lee, N. Xu, P. Filip, Skipper Kagamaster, Joseph Kwasizur, M. Shao, G. Van Buren, D. Cebra, R. L. Ray, A. Lebedev, Y. Li, S. Singha, Maria Zurek, Jan Vanek, Leszek Adamczyk, R. Seto, L. Ma, Rene Bellwied, H. W. Ke, K. Kauder, Arabinda Behera, R. Ma, F-H. Chang, Q. Yang, D. Arkhipkin, A. Hamed, L. Zhang, Q. H. Xu, O. V. Rogachevskiy, A. Quintero, M. Zyzak, ShinIchi Esumi, R. E. Tribble, Zhanwen Zhu, S. Kabana, J. Fedorisin, G. D. Westfall, T. D. S. Stanislaus, H. H. Wieman, P. Federic, Zebo Tang, Zhaoping Liu, Diana Pawlowska, Wei Xie, S. W. Wissink, Y. Zhang, M. M. Mondal, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, S. S. Shi, G. S. Averichev, Sujit Kumar Tripathy, Yicheng Feng, J. Engelage, W. Christie, Isaac Mooney, J. Jia, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Vitaly Okorokov, Roland Laszlo Pinter, H. J. Crawford, T. Ljubicic, Justin Ewigleben, G. Odyniec, C. Zhong, Andrey Vasiliev, G. Nigmatkulov, Bernd Surrow, Yunlan Ji, Shize Yang, B.R. Schweid, Xiaofeng Luo, X.G. Li, M. Kelsey, Guo-Liang Ma, J. C. Dunlop, L. Wen, B. Pawlik, Janet Elizabeth Seger, A. Aparin, Yinina Ma, H. Caines, I. M. Deppner, S. Ramachandran, M. Csanad, N. Elsey, K. N. Barish, O. Eyser, A. Gibson, Daniel Nemes, Jie Zhao, S. Horvat, F. Seck, S. Zhang, J. M. Landgraf, Li Yi, M. Lomnitz, Xiangming Sun, Jaroslav Adam, C. Jena, Zubayer Ahammed, B. Huang, I. K. Yoo, M. Posik, Z. Chang, Jing-Han Chen, M. Strikhanov, H. M. Spinka, L. K. Kosarzewski, J. Rusnak, X. Huang, C. Perkins, A. Kechechyan, W. B. Schmidke, Muhammad Usman Ashraf, E. P. Sichtermann, J. M. Nelson, M. Kocan, Xiaoyu Liu, C. A. Gagliardi, Xiaofeng Zhu, Ying Liang, P. Kravtsov, Fuwang Shen, W. J. Llope, L. Ruan, A. Lipiec, Pradip Kumar Sahu, R. S. Longacre, T. Nonaka, N. G. Minaev, W. Zha, Y. Fisyak, Sergey Voloshin, P. V. Shanmuganathan, J. Sandweiss, J. R. Adams, Alexander Jentsch, W. Solyst, K. Oh, A. A. Derevschikov, T. Todoroki, A. Ogawa, Q. Y. Shou, E. G. Judd, D. Mallick, Anik Gupta, T. Ullrich, J. W. Harris, P. Szymanski, R. Pak, Frank Jm Geurts, G. Igo, Xinyue Ju, N. Schmitz, A. Attri, E. Shahaliev, T. Galatyuk, H. Z. Huang, S. Vokal, Lukas Holub, Bedangadas Mohanty, Arkadiy Taranenko, P. Huo, J. Butterworth, Z. Ye, Tetsuro Sugiura, Y. J. Sun, N. Magdy Abdelwahab Abdelrahman, C. Dilks, C. Zhou, J. Bryslawskyj, Xuan Zhang, Zongye Zhang, R. Witt, K. Meehan, H. S. Xu, Y. F. Xu, K. Jiang, I. G. Bordyuzhin, N.R. Sahoo, R. Aoyama, A. H. Tang, S. Mioduszewski, T. G. Dedovich, Pengdong Wang, Hanna Paulina Zbroszczyk, Jasvinder A. Singh, Yanjun Wu, I. Bunzarov, O. Matonoha, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, D. A. Morozov, E. C. Aschenauer, R. Kunnawalkam Elayavalli, R. Reed, S. Margetis, N. K. Pruthi, N. Kulathunga Mudiyanselage, J. A. Mazer, X. Dong, M. Sergeeva, Sumit R. Das, C-Q. Li, Christina Markert, D. Smirnov, O. Rusnakova, T. Edmonds, H. S. Matis, Y. Hong, D. Kapukchyan, Z. Moravcova, W. W. Jacobs, J. Lauret, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, T. Tarnowsky, Z. Tu, Jana Bielcikova, A. K. Bhati, D. Keane, J. L. Romero, I. Vassiliev, Lukas Kramarik, E. Finch, Chong Kim, H. G. Ritter, Nikolai Smirnov, Rafal Sikora, F. G. Atetalla, M. Nie, R. Esha, O. D. Tsai, S. K. Radhakrishnan, L. Fulek, W. Q. Shen, K. Gopal, L. C. Bland, H. Liu, David Stewart, Chi Yang, D. N. Svirida, Sevil Salur, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Samuel Heppelmann, B. Tu, K. Yip, K. Nayak, R. Lacey, Peter Q. Liu, and Nilay Shah
Subjects: Physics, Elliptic flow, Hyperon, General Physics and Astronomy, Vorticity, Polarization (waves), 01 natural sciences, Spectral line, Azimuth, Interferometry, 0103 physical sciences, Quadrupole, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: The Λ (Λ[over ¯]) hyperon polarization along the beam direction has been measured in Au+Au collisions at sqrt[s_{NN}]=200 GeV, for the first time in heavy-ion collisions. The polarization dependence on the hyperons' emission angle relative to the elliptic flow plane exhibits a second harmonic sine modulation, indicating a quadrupole pattern of the vorticity component along the beam direction, expected due to elliptic flow. The polarization is found to increase in more peripheral collisions, and shows no strong transverse momentum (p_{T}) dependence at p_{T} greater than 1 GeV/c. The magnitude of the signal is about 5 times smaller than those predicted by hydrodynamic and multiphase transport models; the observed phase of the emission angle dependence is also opposite to these model predictions. In contrast, the kinematic vorticity calculations in the blast-wave model tuned to reproduce particle spectra, elliptic flow, and the azimuthal dependence of the Gaussian source radii measured with the Hanbury Brown-Twiss intensity interferometry technique reproduce well the modulation phase measured in the data and capture the centrality and transverse momentum dependence of the polarization signal.
Published: 2019
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26. Measurements of the transverse-momentum-dependent cross sections of J/ψ production at mid-rapidity in proton+proton collisions at s=510 and 500 GeV with the STAR detector

Author: Jorn Henning Putschke, Zebo Tang, A. V. Brandin, F. G. Atetalla, O. D. Tsai, G. Eppley, Vitaly Okorokov, T. J. Humanic, M. Kelsey, Bernd Surrow, Joseph Kwasizur, J. Pluta, E. P. Sichtermann, N. Elsey, J. L. Drachenberg, Y. Wang, Y. Fisyak, Roli Esha, Vipul Bairathi, C. Perkins, N. Chankova-Bunzarova, W. Li, K. Oh, Z. Chang, M. Shao, G. Van Buren, Skipper Kagamaster, W. Q. Shen, W. B. Schmidke, JSingh, C. A. Gagliardi, Olga Evdokimov, Madan M. Aggarwal, Daniel Nemes, Jie Zhao, Fuqiang Wang, S. Horvat, D. K. Mishra, D. Kalinkin, D. Zhang, S. Esumi, Chong Kim, S. S. Shi, I. Upsal, Y. Hong, P. Szymanski, M. Simko, Jay Roberts, J. Engelage, L. Ma, Rene Bellwied, R. E. Tribble, H. Liu, David Stewart, N. Xu, P. Filip, Jaroslav Bielcik, H. G. Ritter, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Catherine Tomkiel, Q. H. Xu, O. V. Rogachevskiy, A. Quintero, Rafal Sikora, S. Fazio, Xuliang Chen, Maria Stefaniak, K. Yip, F. Liu, Mariusz Przybycien, Y. Yang, R. D. Majka, Xiangming Sun, Jana Bielcikova, P. Sorensen, B. Pawlik, Sevil Salur, I. Vassiliev, Anik Gupta, G. D. Westfall, J. Schambach, Anju Bhasin, G. Xie, A. J. Bassill, S. W. Wissink, Y. Zhang, J. D. Brandenburg, B. J. Summa, A. Gibson, S. Zhang, Jaroslav Adam, L. C. Bland, T. Niida, A. Lebedev, Frank Jm Geurts, T. Galatyuk, C. Zhou, L. Didenko, I. Chakaberia, S. Ramachandran, A. Taranenko, X. Huang, A. Kechechyan, Pradip Kumar Sahu, K. Meehan, D. P. Kiko la, J. Rusnak, N. K. Pruthi, A. K. Bhati, D. Keane, Nikolai Smirnov, O. Eyser, Nilay Shah, B. Huang, I. K. Yoo, Chi Yang, M. Kocan, W. Christie, L. Ruan, Maksym Zyzak, Xiaoyu Liu, R. S. Longacre, M. Tokarev, H. Z. Huang, S. Vokal, D. N. Svirida, Andrey Vasiliev, T. Todoroki, J. C. Webb, P. V. Shanmuganathan, M. M. Mondal, E. G. Judd, X.G. Li, P. Chaloupka, Ting Lin, D. Mallick, Y. Panebratsev, Janet Elizabeth Seger, Saehanseul Oh, D. Grosnick, I. M. Deppner, R. Seto, Xiaofeng Luo, Guo-Liang Ma, Z. J. Xu, S. Trentalange, T. D. S. Stanislaus, Lukas Holub, Bedangadas Mohanty, H. H. Wieman, G. Igo, Zhigang Xiao, T. Huang, Yunpeng Liu, Derek Anderson, Pu Wang, J. H. Chen, Li Yi, N. G. Minaev, Benjamin Schweid, K. N. Barish, Samuel Heppelmann, B. Tu, D. Arkhipkin, A. Hamed, D. A. Morozov, T. Edmonds, P. Kravtsov, Fuwang Shen, J. Butterworth, Z. Ye, Y. F. Xu, T. Nonaka, A. A. Derevschikov, F. Videbæk, S. K. Radhakrishnan, L. Fulek, Sukalyan Chattopadhyay, L. Zhang, Diana Pawlowska, Xuan Zhang, R. Aoyama, Hanna Paulina Zbroszczyk, T. Ullrich, J. Porter, Ivan Kisel, M. Nie, A. Lipiec, W. Zha, R. Kunnawalkam Elayavalli, R. Reed, Siwei Luo, J. W. Harris, J. Bryslawskyj, N. Kulathunga Mudiyanselage, K. Kauder, Nihar Sahoo, Zongye Zhang, I. G. Bordyuzhin, B. S. Page, B. Stringfellow, Maria Zurek, H. W. Ke, Yicheng Feng, G. Nigmatkulov, J. M. Landgraf, Arka Chatterjee, P. Seyboth, Jan Vanek, Leszek Adamczyk, D. Tlusty, Peng Huo, G. Agakishiev, Jongmin Lee, R. L. Ray, Jiangyong Jia, A. H. Tang, I. Bunzarov, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, J. A. Mazer, R. Ma, O. Matonoha, M. Strikhanov, P. Federic, Y. Li, S. Singha, D. Cebra, Isaac Mooney, Roland Laszlo Pinter, H. J. Crawford, Kejun Kang, J. K. Adkins, L. V. Nogach, Tetsuro Sugiura, K. Nayak, Sumit R. Das, Y. J. Sun, W. Guryn, R. Lacey, C. Dilks, R. Fatemi, L. He, J. Sandweiss, T. Ljubicic, Zhanwen Zhu, D. Kapukchyan, S. Kabana, Yinina Ma, Todd Kinghorn, S. L. Huang, K. Krueger, M. Csanad, Shize Yang, Nasim, J. Fedorisin, Niseem Magdy, H. Caines, Muhammad Usman Ashraf, M. Lomnitz, Xiaofeng Zhu, Ying Liang, G. Wang, R. Witt, Sergey Voloshin, S. Mioduszewski, F. Seck, A. I. Hamad, Sedigheh Jowzaee, M. Cherney, Lokesh Kumar, L. K. Kosarzewski, A. Ogawa, J. L. Romero, Xinyue Ju, Zhen Liu, J. M. Nelson, Hua Pei, S. K. Tripathy, M. Posik, Arabinda Behera, H. M. Spinka, D. G. Underwood, W. J. Llope, C-Q. Li, T. G. Dedovich, I. G. Alekseev, Tong Liu, K. Jiang, Yanjun Wu, Lukas Kramarik, Christina Markert, D. Smirnov, C. Zhong, E. C. Aschenauer, O. Rusnakova, S. Margetis, Prithwish Tribedy, B. K. Srivastava, N. Herrmann, H. S. Matis, M. A. Lisa, J. C. Mei, E. Finch, Alexander Jentsch, M. Sánchez Calderón de la Barca, Z. Moravcova, W. W. Jacobs, J. H. Thomas, X. Dong, S. Siejka, J. Lauret, J. Cheng, A. Attri, M. Sergeeva, P. Liu, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, T. Tarnowsky, H. Xu, F-H. Chang, Q. Yang, Wei Xie, Justin Ewigleben, G. Odyniec, A. Aparin, G. S. Averichev, N. Schmitz, J. C. Dunlop, L. Wen, E. Shahaliev, Zubayer Ahammed, Q. Y. Shou, R. Pak, J. R. Adams, and W. Solyst
Subjects: Physics, Nuclear physics, Range (particle radiation), Meson production, Proton, Transverse momentum, High Energy Physics::Experiment, Rapidity, Production (computer science), Nuclear Experiment, Relativistic Heavy Ion Collider, STAR detector
Abstract: We present measurements of the differential cross sections of inclusive J/ψ meson production as a function of transverse momentum (pTJ/ψ) using the μ+μ- and e+e- decay channels in proton+proton collisions at center-of-mass energies of 510 and 500 GeV, respectively, recorded by the STAR detector at the Relativistic Heavy Ion Collider. The measurement from the μ+μ- channel is for 0
Published: 2019
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27. Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s=510 GeV

Author: Yunlan Ji, I. Vassiliev, Madan M. Aggarwal, Mate Csanad, Joel Anthony Mazer, Z. Yang, G. Wang, Qi Yang, M. Sergeeva, Jaroslav Adam, B. S. Page, Avishek Chatterjee, A. V. Brandin, D. P. Kikola, B. Stringfellow, Fuqiang Wang, D. K. Mishra, J. D. Brandenburg, H. Z. Huang, S. Vokal, Q. H. Xu, Tetsuro Sugiura, Y. F. Xu, Lei Zhang, Y. J. Sun, C. Dilks, M. Tokarev, F. Videbæk, L. Didenko, N. Kulathunga Mudiyanselage, Siwei Luo, S. Kabana, L. C. Bland, B. K. Chan, Michal Sumbera, K. N. Barish, D. Tlusty, Peng Huo, P. Sorensen, P. V. Shanmuganathan, Joseph Kwasizur, Vipul Bairathi, Sukalyan Chattopadhyay, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Catherine Tomkiel, S. W. Wissink, Y. Li, Alexandre Alarcon Do Passo Suaide, Y. Zhang, J. Bryslawskyj, T. Tarnowsky, Niladribihari Sahoo, Tong Liu, Irakli Chakaberia, B. Huang, D. N. Svirida, L. V. Nogach, S. Fazio, Zongye Zhang, M. Shao, G. Van Buren, D. Zhang, S. Esumi, J. R. Adams, A. A. Derevschikov, Shangfeng Yang, S. S. Shi, I. G. Bordyuzhin, N. Herrmann, W. Guryn, B. Pawlik, Wei Xie, Yu-Gang Ma, P. Szymanski, J. H. Chen, T. D. S. Stanislaus, R. Lacey, Jiangyong Jia, J. B. Singh, A. Aparin, Jongmin Lee, Zebo Tang, S. Siejka, R. Kunnawalkam Elayavalli, P. Federic, J. M. Nelson, Dukhishyam Mallick, N. Magdy, Z. Moravcova, M. H. Kelsey, Chitrasen Jena, R. L. Ray, R. Ma, Guannan Xie, Isaac Mooney, H. H. Wieman, Jaroslav Bielcik, D. A. Morozov, T. Edmonds, Lukas Holub, Bedangadas Mohanty, N. Schmitz, J. Fedorisin, T. G. Dedovich, Xuan Zhang, X. C. Chen, S. Zhang, E. Shahaliev, J. Engelage, R. Seto, R. S. Longacre, M. Lomnitz, G. Nigmatkulov, C. Yang, N. K. Pruthi, T. Ljubicic, J. W. Harris, Hanna Paulina Zbroszczyk, D. Kalinkin, Z. Liu, Diana Pawlowska, Robert Licenik, Jana Bielcikova, Muhammad Usman Ashraf, J. M. Landgraf, Y. Fisyak, O. V. Rogachevskiy, Y. Hong, Anthony Robert Timmins, Adam Ryszard Kisiel, H. Caines, J. L. Romero, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, R. Witt, S. Heppelmann, D. G. Underwood, G. Eppley, H. W. Ke, L. Fulek, A. Quintero, C. Perkins, Lin Ma, Roland Laszlo Pinter, G. Igo, K. Oh, M. Strikhanov, E. Finch, Sergey Voloshin, Xinyue Ju, J. Pluta, H. J. Crawford, J. K. Adkins, X. G. Luo, A. H. Tang, Pengdong Wang, B. J. Summa, M. Zyzak, R. Fatemi, L. He, Todd Kinghorn, K. Kauder, A. Taranenko, E. P. Sichtermann, G. Odyniec, J. Sandweiss, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, S. Mioduszewski, H. Liu, P. Seyboth, K. Jiang, Y. Wang, I. Bunzarov, I. K. Yoo, J. Cheng, Chong Kim, Y. F. Wu, I. Upsal, Jan Vanek, Y. Yang, O. Matonoha, Xiaoyu Liu, H. G. Ritter, Frank Jm Geurts, S. Ramachandran, O. Eyser, Rene Bellwied, Maria Stefaniak, T. Galatyuk, D. Kapukchyan, Rafal Sikora, M. Cherney, Nilay Shah, T. Ullrich, Vitaly Okorokov, Lokesh Kumar, Hua Pei, R. Reed, M. M. Mondal, Roli Esha, E. G. Judd, R. E. Tribble, K. Meehan, Bernd Surrow, S. K. Tripathy, Prithwish Tribedy, B. K. Srivastava, K. Yip, Daniel Nemes, Jie Zhao, S. Horvat, Benjamin Schweid, T. J. Humanic, H. S. Xu, Z. Ye, D. Arkhipkin, Guo-Liang Ma, N. Xu, P. Filip, N. Elsey, J. Putschke, Shengli Huang, Z. Chang, A. Hamed, X. M. Sun, Li Yi, Xiaofeng Zhu, Ying Liang, A. Lipiec, W. Zha, G. D. Westfall, Maowu Nie, X. Huang, W. B. Schmidke, W. J. Llope, S. Das, J. C. Dunlop, L. Wen, P. Kravtsov, Fuwang Shen, A. Gupta, C. A. Gagliardi, A. Ogawa, Dmitry Smirnov, A. Kechechyan, C. Zhou, F. Seck, Zubayer Ahammed, Pradip Kumar Sahu, T. Nonaka, C-Q. Li, M. Posik, Arabinda Behera, Alexander Jentsch, Christina Markert, O. Rusnakova, H. M. Spinka, H. S. Matis, L. K. Kosarzewski, Zhigang Xiao, T. Huang, Q. Y. Shou, W. W. Jacobs, J. Lauret, A. Attri, Yunpeng Liu, Derek Anderson, R. Pak, J. Porter, N. G. Minaev, Olga Evdokimov, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, Ivan Kisel, Jay Roberts, P. Chaloupka, J. Rusnak, Ting Lin, M. Kocan, Maria Zurek, L. Ruan, K. Krueger, Yicheng Feng, S. Trentalange, J. H. Thomas, T. Todoroki, F-H. Chang, W. Christie, G. S. Averichev, Subhash Singha, Andrey Vasiliev, X.G. Li, Janet Elizabeth Seger, Justin Ewigleben, A. Gibson, C. Zhong, I. M. Deppner, J. M. Butterworth, J. C. Webb, F. Liu, Miroslav Simko, Mariusz Przybycien, Md. Nasim, R. D. Majka, J. L. Drachenberg, W. Solyst, J. Schambach, Anju Bhasin, A. J. Bassill, Peng Liu, K. Kang, T. Niida, A. Lebedev, L. Adamczyk, Y. Panebratsev, Saehanseul Oh, D. Grosnick, R. Aoyama, Z. Z. Xu, B. Tu, Nikita Smirnov, K. Nayak, F. G. Atetalla, O. D. Tsai, I. G. Alekseev, W. Q. Shen, K. Gopal, M. A. Lisa, J. C. Mei, David Stewart, Sevil Salur, A. K. Bhati, D. Keane, G. Agakishiev, D. Cebra, Zhanwen Zhu, E. C. Aschenauer, S. Margetis, and X. Dong
Subjects: Physics, 010308 nuclear & particles physics, media_common.quotation_subject, Jet (particle physics), Polarization (waves), 01 natural sciences, Asymmetry, Helicity, Gluon, Nuclear physics, Momentum, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, media_common, Spin-½
Abstract: We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.
Published: 2019
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28. Polarization of Λ (Λ[over ¯]) Hyperons along the Beam Direction in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, R, Aoyama, A, Aparin, D, Arkhipkin, E C, Aschenauer, M U, Ashraf, F, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A J, Bassill, A, Behera, R, Bellwied, A, Bhasin, A K, Bhati, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Bryslawskyj, I, Bunzarov, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, S, Chattopadhyay, J H, Chen, X, Chen, J, Cheng, M, Cherney, W, Christie, H J, Crawford, M, Csanád, S, Das, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, C, Dilks, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, Y, Feng, P, Filip, E, Finch, Y, Fisyak, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, K, Gopal, D, Grosnick, A, Gupta, W, Guryn, A I, Hamad, A, Hamed, J W, Harris, L, He, S, Heppelmann, N, Herrmann, L, Holub, Y, Hong, S, Horvat, B, Huang, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, T A, Kinghorn, I, Kisel, A, Kisiel, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, A, Lipiec, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, M, Lomnitz, R S, Longacre, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy Abdelwahab Abdelrahman, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, O, Matonoha, J A, Mazer, K, Meehan, J C, Mei, N G, Minaev, S, Mioduszewski, D, Mishra, B, Mohanty, M M, Mondal, I, Mooney, Z, Moravcova, D A, Morozov, Md, Nasim, K, Nayak, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, G, Odyniec, A, Ogawa, K, Oh, S, Oh, V A, Okorokov, B S, Page, R, Pak, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, R L, Pintér, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, O, Rusnakova, N R, Sahoo, P K, Sahu, S, Salur, J, Sandweiss, J, Schambach, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, F, Shen, W Q, Shen, S S, Shi, Q Y, Shou, E P, Sichtermann, S, Siejka, R, Sikora, M, Simko, J, Singh, S, Singha, D, Smirnov, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, T, Sugiura, M, Sumbera, B, Summa, X M, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, T, Todoroki, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, B, Tu, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, P, Wang, Y, Wang, J C, Webb, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, I-K, Yoo, H, Zbroszczyk, W, Zha, D, Zhang, L, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Abstract: The Λ (Λ[over ¯]) hyperon polarization along the beam direction has been measured in Au+Au collisions at sqrt[s_{NN}]=200 GeV, for the first time in heavy-ion collisions. The polarization dependence on the hyperons' emission angle relative to the elliptic flow plane exhibits a second harmonic sine modulation, indicating a quadrupole pattern of the vorticity component along the beam direction, expected due to elliptic flow. The polarization is found to increase in more peripheral collisions, and shows no strong transverse momentum (p_{T}) dependence at p_{T} greater than 1 GeV/c. The magnitude of the signal is about 5 times smaller than those predicted by hydrodynamic and multiphase transport models; the observed phase of the emission angle dependence is also opposite to these model predictions. In contrast, the kinematic vorticity calculations in the blast-wave model tuned to reproduce particle spectra, elliptic flow, and the azimuthal dependence of the Gaussian source radii measured with the Hanbury Brown-Twiss intensity interferometry technique reproduce well the modulation phase measured in the data and capture the centrality and transverse momentum dependence of the polarization signal.
Published: 2019

29. First Observation of the Directed Flow of D^{0} and D^{0}[over ¯] in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, R, Aoyama, A, Aparin, E C, Aschenauer, M U, Ashraf, F G, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A J, Bassill, A, Behera, R, Bellwied, A, Bhasin, A K, Bhati, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Bryslawskyj, I, Bunzarov, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, S, Chattopadhyay, J H, Chen, X, Chen, J, Cheng, M, Cherney, W, Christie, G, Contin, H J, Crawford, M, Csanád, S, Das, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, C, Dilks, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, Y, Feng, P, Filip, E, Finch, Y, Fisyak, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, K, Gopal, L, Greiner, D, Grosnick, A, Gupta, W, Guryn, A I, Hamad, A, Hamed, J W, Harris, L, He, S, Heppelmann, N, Herrmann, L, Holub, Y, Hong, S, Horvat, B, Huang, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, W W, Jacobs, C, Jena, A, Jentsch, Y, Ji, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, Y V, Khyzhniak, D P, Kikoła, C, Kim, T A, Kinghorn, I, Kisel, A, Kisiel, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N, Kulathunga Mudiyanselage, L, Kumar, R, Kunnawalkam Elayavalli, J H, Kwasizur, R, Lacey, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, A, Lipiec, M A, Lisa, F, Liu, H, Liu, P, Liu, T, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, M, Lomnitz, R S, Longacre, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, O, Matonoha, J A, Mazer, K, Meehan, J C, Mei, N G, Minaev, S, Mioduszewski, D, Mishra, B, Mohanty, M M, Mondal, I, Mooney, Z, Moravcova, D A, Morozov, Md, Nasim, K, Nayak, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, G, Odyniec, A, Ogawa, S, Oh, V A, Okorokov, B S, Page, R, Pak, Y, Panebratsev, B, Pawlik, D, Pawlowska, H, Pei, C, Perkins, R L, Pintér, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, O, Rusnakova, N R, Sahoo, P K, Sahu, S, Salur, J, Sandweiss, J, Schambach, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, F, Shen, W Q, Shen, S S, Shi, Q Y, Shou, E P, Sichtermann, S, Siejka, R, Sikora, M, Simko, J, Singh, S, Singha, D, Smirnov, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Stefaniak, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, T, Sugiura, M, Sumbera, B, Summa, X M, Sun, Y, Sun, B, Surrow, D N, Svirida, M A, Szelezniak, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, A, Tawfik, J H, Thomas, A R, Timmins, D, Tlusty, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, B, Tu, Z, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, P, Wang, Y, Wang, J C, Webb, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Yang, Z, Ye, L, Yi, K, Yip, H, Zbroszczyk, W, Zha, D, Zhang, L, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M, Zurek, and M, Zyzak
Abstract: We report the first measurement of rapidity-odd directed flow (v_{1}) for D^{0} and D^{0}[over ¯] mesons at midrapidity (|y|0.8) in Au+Au collisions at sqrt[s_{NN}]=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10-80% Au+Au collisions, the slope of the v_{1} rapidity dependence (dv_{1}/dy), averaged over D^{0} and D^{0}[over ¯] mesons, is -0.080±0.017(stat)±0.016(syst) for transverse momentum p_{T} above 1.5 GeV/c. The absolute value of D^{0} meson dv_{1}/dy is about 25 times larger than that for charged kaons, with 3.4σ significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions.
Published: 2019

30. Observation of Excess J/ψ Yield at Very Low Transverse Momenta in Au+Au Collisions at sqrt[s_{NN}]=200 GeV and U+U Collisions at sqrt[s_{NN}]=193 GeV

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, I, Alekseev, D M, Anderson, R, Aoyama, A, Aparin, D, Arkhipkin, E C, Aschenauer, M U, Ashraf, F, Atetalla, A, Attri, G S, Averichev, V, Bairathi, K, Barish, A J, Bassill, A, Behera, R, Bellwied, A, Bhasin, A K, Bhati, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, J, Bryslawskyj, I, Bunzarov, J, Butterworth, H, Caines, M Calderón de la Barca, Sánchez, D, Cebra, I, Chakaberia, P, Chaloupka, B K, Chan, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, S, Chattopadhyay, J H, Chen, X, Chen, J, Cheng, M, Cherney, W, Christie, H J, Crawford, M, Csanad, S, Das, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, C, Dilks, X, Dong, J L, Drachenberg, J C, Dunlop, T, Edmonds, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, J, Fedorisin, Y, Feng, P, Filip, E, Finch, Y, Fisyak, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, D, Grosnick, A, Gupta, W, Guryn, A I, Hamad, A, Hamed, J W, Harris, L, He, S, Heppelmann, N, Herrmann, L, Holub, Y, Hong, S, Horvat, B, Huang, H Z, Huang, S L, Huang, T, Huang, X, Huang, T J, Humanic, P, Huo, G, Igo, W W, Jacobs, A, Jentsch, J, Jia, K, Jiang, S, Jowzaee, X, Ju, E G, Judd, S, Kabana, S, Kagamaster, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, M, Kelsey, D P, Kikoła, C, Kim, T A, Kinghorn, I, Kisel, A, Kisiel, M, Kocan, L, Kochenda, L K, Kosarzewski, L, Kramarik, P, Kravtsov, K, Krueger, N Kulathunga, Mudiyanselage, L, Kumar, R Kunnawalkam, Elayavalli, J H, Kwasizur, R, Lacey, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, C, Li, W, Li, X, Li, Y, Li, Y, Liang, R, Licenik, T, Lin, A, Lipiec, M A, Lisa, F, Liu, H, Liu, P, Liu, X, Liu, Y, Liu, Z, Liu, T, Ljubicic, W J, Llope, M, Lomnitz, R S, Longacre, S, Luo, X, Luo, G L, Ma, L, Ma, R, Ma, Y G, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, O, Matonoha, J A, Mazer, K, Meehan, J C, Mei, N G, Minaev, S, Mioduszewski, D, Mishra, B, Mohanty, M M, Mondal, I, Mooney, Z, Moravcova, D A, Morozov, Md, Nasim, K, Nayak, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, G, Odyniec, A, Ogawa, K, Oh, S, Oh, V A, Okorokov, B S, Page, R, Pak, Y, Panebratsev, B, Pawlik, H, Pei, C, Perkins, R L, Pinter, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, O, Rusnakova, N R, Sahoo, P K, Sahu, S, Salur, J, Sandweiss, J, Schambach, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, F, Shen, W Q, Shen, S S, Shi, Q Y, Shou, E P, Sichtermann, S, Siejka, R, Sikora, M, Simko, JSingh, S, Singha, D, Smirnov, N, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, T, Sugiura, M, Sumbera, B, Summa, X M, Sun, Y, Sun, B, Surrow, D N, Svirida, P, Szymanski, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, T, Todoroki, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, B, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, F, Wang, G, Wang, P, Wang, Y, Wang, J C, Webb, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, H, Xu, N, Xu, Q H, Xu, Y F, Xu, Z, Xu, C, Yang, Q, Yang, S, Yang, Y, Yang, Z, Ye, L, Yi, K, Yip, I-K, Yoo, H, Zbroszczyk, W, Zha, D, Zhang, L, Zhang, S, Zhang, X P, Zhang, Y, Zhang, Z, Zhang, J, Zhao, C, Zhong, C, Zhou, X, Zhu, Z, Zhu, M K, Zurek, and M, Zyzak
Abstract: We report on the first measurements of J/ψ production at very low transverse momentum (p_{T}0.2 GeV/c) in hadronic Au+Au collisions at sqrt[s_{NN}]=200 GeV and U+U collisions at sqrt[s_{NN}]=193 GeV. Remarkably, the inferred nuclear modification factor of J/ψ at midrapidity in Au+Au (U+U) collisions reaches about 24 (52) for p_{T}0.05 GeV/c in the 60%-80% collision centrality class. This noteworthy enhancement cannot be explained by hadronic production accompanied by cold and hot medium effects. In addition, the dN/dt distribution of J/ψ for the very low p_{T} range is presented for the first time. The distribution is consistent with that expected from the Au nucleus and shows a hint of interference. Comparison of the measurements to theoretical calculations of coherent production shows that the excess yield can be described reasonably well and reveals a partial disruption of coherent production in semicentral collisions, perhaps due to the violent hadronic interactions. Incorporating theoretical calculations, the results strongly suggest that the dramatic enhancement of J/ψ yield observed at extremely low p_{T} originates from coherent photon-nucleus interactions. In particular, coherently produced J/ψ's in violent hadronic collisions may provide a novel probe of the quark-gluon plasma.
Published: 2019

31. Centrality and transverse momentum dependence of D0 -meson production at mid-rapidity in Au + Au collisions at sNN=200 GeV

Author: M. Calderon De La Barca Sanchez, A. I. Hamad, Chong Kim, Sedigheh Jowzaee, J. L. Romero, Madan M. Aggarwal, M. A. Szelezniak, H. G. Ritter, Xiaofeng Luo, Fuqiang Wang, Benjamin Schweid, J. L. Drachenberg, D. K. Mishra, Guo-Liang Ma, Rafal Sikora, Tetsuro Sugiura, D. Arkhipkin, Nasim, A. Hamed, Olga Evdokimov, J. Rusnak, A. F. Kraishan, Lukas Kramarik, E. Finch, M. Kocan, D. Kalinkin, Li Yi, Jorn Henning Putschke, Y. J. Sun, I. Upsal, L. Ruan, A. V. Brandin, C. Dilks, J. Porter, A. Vossen, Y. Wang, Y. Fisyak, Jay Roberts, A. S. Hirsch, P. Kravtsov, D. Zhang, Fuwang Shen, A. M. Schmah, W. Christie, Ivan Kisel, Maksym Zyzak, Maria Zurek, S. Esumi, Vipul Bairathi, K. Oh, H. W. Ke, T. Todoroki, J. C. Webb, L. C. Bland, Giacomo Contin, K. Kauder, Chi Yang, D. N. Svirida, L. Zhang, Justin Ewigleben, G. Odyniec, C. Zhong, Wei Xie, Nihar Sahoo, Andrey Vasiliev, R. Seto, A. Aparin, G. Eppley, I. Vassiliev, J. C. Dunlop, L. Wen, S. L. Huang, T. J. Humanic, D. L. Olvitt, Anik Gupta, Jaroslav Bielcik, S. K. Radhakrishnan, L. Fulek, J. Pluta, R. S. Longacre, Robert Licenik, P. Szymanski, X.G. Li, E. P. Sichtermann, Anthony Robert Timmins, Adam Ryszard Kisiel, N. Chankova-Bunzarova, W. Li, Frank Jm Geurts, Zubayer Ahammed, N. Schmitz, K. N. Barish, Skipper Kagamaster, J. Engelage, Shize Yang, Janet Elizabeth Seger, Roland Laszlo Pinter, H. J. Crawford, Jaroslav Adam, L. Ma, O. V. Rogachevskiy, A. Quintero, J. Y. Zhang, T. Galatyuk, B. S. Page, Maowu Nie, E. Shahaliev, N. Xu, Rene Bellwied, G. Nigmatkulov, D. P. Kikola, X. Huang, A. Kechechyan, R. E. Tribble, B. Stringfellow, I. M. Deppner, J. K. Adkins, J. R. Adams, P. V. Shanmuganathan, F. Seck, Q. Y. Shou, J. M. Landgraf, Pradip Kumar Sahu, T. Nonaka, P. Chaloupka, W. Solyst, C. Zhou, K. Meehan, M. Posik, R. Fatemi, L. He, Todd Kinghorn, F. Videbæk, P. Filip, K. Krueger, Ting Lin, R. Pak, Z. J. Xu, Arabinda Behera, H. M. Spinka, D. Mallick, Xiangming Sun, Vitaly Okorokov, M. Strikhanov, Sukalyan Chattopadhyay, David Brown, G. Wang, J. Kvapil, A. A. Derevschikov, H. Qiu, Bernd Surrow, S. Trentalange, R. Witt, J. W. Harris, J. Sandweiss, M. Tokarev, G. D. Westfall, Zebo Tang, J. H. Thomas, N. Elsey, Nilay Shah, G. Igo, S. Mioduszewski, N. K. Pruthi, M. Cherney, I. G. Alekseev, D. Kapukchyan, Z. Chang, Lokesh Kumar, Hua Pei, M. A. Lisa, J. C. Mei, W. B. Schmidke, Jana Bielcikova, Prithwish Tribedy, B. K. Srivastava, S. K. Tripathy, Leo Clifford Greiner, M. Kelsey, F-H. Chang, Q. Yang, C. A. Gagliardi, F. Liu, K. Yip, P. Sorensen, T. D. S. Stanislaus, T. Ullrich, H. H. Wieman, C. Perkins, L. Krauth, J. D. Brandenburg, N. Herrmann, S. Siejka, Mariusz Przybycien, G. S. Averichev, Y. Yang, J. Bryslawskyj, B. Pawlik, A. Gibson, S. Zhang, J. Butterworth, Z. Ye, L. Didenko, I. Chakaberia, P. Seyboth, Y. F. Xu, J. Lidrych, Jan Vanek, Leszek Adamczyk, P. Federic, Q. H. Xu, A. H. Tang, Pengdong Wang, S. Fazio, Xuliang Chen, B. Huang, R. D. Majka, E. C. Aschenauer, I. Bunzarov, S. Margetis, O. Matonoha, X. Dong, G. Agakishiev, D. S. Gunarathne, J. Schambach, Zhigang Xiao, T. Huang, D. Cebra, Zhanwen Zhu, H. Xu, Anju Bhasin, S. Kabana, G. Xie, A. J. Bassill, Yunpeng Liu, Derek Anderson, Jongmin Lee, R. L. Ray, K. Kang, T. Niida, R. Ma, A. Lebedev, N. G. Minaev, T. Ljubicic, Niseem Magdy, H. Caines, M. Lomnitz, Siwei Luo, Joseph Kwasizur, Jiangyong Jia, M. Shao, G. Van Buren, Isaac Mooney, S. S. Shi, Muhammad Usman Ashraf, Sergey Voloshin, Xinyue Ju, K. Jiang, Jasvinder A. Singh, Yanjun Wu, M. Sergeeva, Arkadiy Taranenko, D. G. Underwood, J. Cheng, Arka Chatterjee, Peng Huo, A. Harlenderova, M. K. Mustafa, W. Guryn, R. Lacey, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, J. Fedorisin, M. M. Mondal, Roli Esha, Daniel Nemes, Jie Zhao, S. Horvat, M. Simko, A. Lipiec, W. Zha, Lukas Holub, Bedangadas Mohanty, C-Q. Li, Christina Markert, D. Smirnov, O. Rusnakova, H. S. Matis, Z. Moravcova, W. W. Jacobs, J. Lauret, R. Lednicky, L. Kochenda, T. Tarnowsky, M. Csanad, Xiaofeng Zhu, Ying Liang, A. Ogawa, T. G. Dedovich, I. K. Yoo, Zongye Zhang, Y. Guo, I. G. Bordyuzhin, Xiaoyu Liu, J. A. Mazer, N. Kulathunga Mudiyanselage, L. V. Nogach, Sumit R. Das, C. E. Flores, E. G. Judd, Y. Hong, Zhaoping Liu, B. K. Chan, Michal Sumbera, Catherine Tomkiel, S. W. Wissink, Y. Zhang, H. Z. Huang, S. Vokal, F. G. Atetalla, O. D. Tsai, J. H. Chen, D. A. Morozov, T. Edmonds, W. Q. Shen, B. J. Summa, H. Liu, David Stewart, Sevil Salur, Y. Panebratsev, Saehanseul Oh, D. Grosnick, S. Ramachandran, O. Eyser, Samuel Heppelmann, B. Tu, K. Nayak, A. K. Bhati, D. Keane, Nikolai Smirnov, L. G. Efimov, Yu-Gang Ma, L. K. Kosarzewski, J. M. Nelson, W. J. Llope, Alexander Jentsch, A. Attri, P. Liu, Xuan Zhang, R. Aoyama, Hanna Paulina Zbroszczyk, R. Kunnawalkam Elayavalli, and R. Reed
Subjects: Physics, Quark, Particle physics, Strange quark, Meson, 010308 nuclear & particles physics, Hadron, Kinetic energy, 01 natural sciences, Spectral line, Charm quark, 0103 physical sciences, Rapidity, 010306 general physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Csanad, M; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A | Abstract: We report a new measurement of D0-meson production at mid-rapidity (|y|l1) in Au + Au collisions at sNN=200GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D0 mesons with transverse momentum pT9GeV/c are reported in various centrality bins (0-10%, 10-20%, 20-40%, 40-60%, and 60-80%). Blast-wave thermal models are used to fit the D0-meson pT spectra to study D0 hadron kinetic freeze-out properties. The average radial flow velocity extracted from the fit is considerably smaller than that of light hadrons (π,K, and p), but comparable to that of hadrons containing multiple strange quarks (φ,Ξ-), indicating that D0 mesons kinetically decouple from the system earlier than light hadrons. The calculated D0 nuclear modification factors reaffirm that charm quarks suffer a large amount of energy loss in the medium, similar to those of light quarks for pTg4GeV/c in central 0-10% Au + Au collisions. At low pT, the nuclear modification factors show a characteristic structure qualitatively consistent with the expectation from model predictions that charm quarks gain sizable collective motion during the medium evolution. The improved measurements are expected to offer new constraints to model calculations and help gain further insights into the hot and dense medium created in these collisions.
Published: 2019
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32. Measurement of the longitudinal spin asymmetries for weak boson production in proton-proton collisions at s=510 GeV

Author: Y. K. Sun, Bernd Surrow, I. G. Alekseev, M. A. Lisa, J. C. Mei, N. Elsey, G. Eppley, Long Ma, Peifeng Liu, J. Pluta, C. A. Gagliardi, Guannan Xie, Yanfang Liu, R. Lednicky, J. Bryslawskyj, N. Chankova-Bunzarova, Skipper Kagamaster, Subhash Singha, Justin Ewigleben, J. Fedorisin, T. Nonaka, Christina Markert, A. Gibson, G. Odyniec, Mate Csanad, Anju Bhasin, O. Rusnakova, Nasim, L. C. Bland, T. Ljubicic, H. S. Matis, Hanna Paulina Zbroszczyk, B. Pawlik, L. K. Kosarzewski, Chris Perkins, Joel Anthony Mazer, Rene Bellwied, A. J. Bassill, Liang He, Alexandre Alarcon Do Passo Suaide, Lukas Holub, Bedangadas Mohanty, Isaac Upsal, J. Lauret, H. Caines, A. Quintero, A. Aparin, Jaroslav Bielcik, J. Rusnak, Z. Chang, J. M. Butterworth, S. Stanislaus, L. Kochenda, Yaping Wang, J. C. Webb, Spiros Margetis, T. Niida, A. F. Kraishan, M. Kocan, Jie Zhang, Saskia Mioduszewski, Shusu Shi, Xiaofeng Luo, F. Seck, Guo-Liang Ma, E. Shahaliev, Dingwei Zhang, A. Lebedev, W. Solyst, John Nelson, O. V. Rogachevskiy, Vitalii Okorokov, A. H. Tang, Feng-Han Chang, Muhammad Usman Ashraf, Neha Shah, L. Ruan, Pavol Federic, Alexander Vasiliev, Li Yi, M. Posik, Tetsuro Sugiura, J. L. Drachenberg, Olga Evdokimov, M. Tokarev, Yang Yang, Matthew Kelsey, Gary Westfall, Arghya Chatterjee, Xiangming Sun, Kevin Adkins, B. Huang, C. Zhong, E. C. Aschenauer, Norbert Herrmann, Chi Yang, P. Kravtsov, G. Agakishiev, D. S. Gunarathne, Kun Jiang, J. Putschke, C. Dilks, S. W. Wissink, Wen-Qing Shen, Jaroslav Adam, Kejun Kang, S. Das, S. Horvat, Jana Bielcikova, Madan M. Aggarwal, Fuqiang Wang, S. Kabana, Z. Moravcova, Jeong-Hun Lee, O. D. Tsai, A. Ogawa, D. Cebra, Nalinda Kulathunga Mudiyanselage, Xinyue Ju, S. Trentalange, Zhen Liu, L. V. Nogach, T. Todoroki, Jay Roberts, Zhenyu Ye, D. K. Mishra, X. Dong, Maria Zurek, ShinIchi Esumi, Benjamin Schweid, Manuel Calderon De La Barca Sanchez, P. Szymanski, Zhanwen Zhu, Gang Wang, Robert E. Tribble, J. H. Thomas, Yuliang Sun, T. J. Humanic, Jiangyong Jia, D. Arkhipkin, A. Hamed, N. K. Pruthi, D. N. Svirida, S. Fazio, K. Krueger, I. G. Bordyuzhin, Joseph Kwasizur, J. Engelage, D. L. Olvitt, Miroslav Simko, Ron Longacre, Mariusz Przybycien, Paul Sorensen, G. Nigmatkulov, Cheng Li, D. Kapukchyan, I. K. Yoo, Subhasis Chattopadhyay, Yicheng Feng, A. Vossen, H. H. Wieman, Xiaolong Chen, Arabinda Behera, Xiaoyu Liu, J. W. Harris, R. Witt, Yu-Gang Ma, Roli Esha, E. P. Sichtermann, W. J. Llope, G. S. Averichev, Shuai Yang, J. M. Landgraf, I. Vassiliev, J. C. Dunlop, L. Wen, Daniel Nemes, Jie Zhao, Zhongbin Xu, Jing-Han Chen, Qiye Shou, Dmitry Morozov, J. Schambach, Alexander Jentsch, Ivan Kisel, Zubayer Ahammed, M. Strikhanov, Norbert Schmitz, F. Videbæk, M. M. Mondal, C. E. Flores, E. G. Judd, D. P. Kikola, A. Attri, Wei Li, Z. Ye, Yuanjing Li, Dmitri Smirnov, B. Stringfellow, Chensheng Zhou, A. Lipiec, Lukas Kramarik, Maowu Nie, L. Zhang, P. Huo, Sooraj Krishnan Radhakrishnan, E. Finch, Chong Kim, Niseem Magdy Abdelwahab Abdelrahman, M. Sergeeva, Kishora Nayak, W. Zha, Zhigang Xiao, Jagbir Singh, T. Huang, J. Porter, Nu Xu, Raghav Kunnawalkam Elayavalli, J. Sandweiss, A. Kechechyan, Pradip Kumar Sahu, B. K. Chan, Michal Sumbera, Yifei Zhang, P. Chaloupka, Yi-Fei Xu, Derek Anderson, Janet Elizabeth Seger, Ting Lin, I. Bunzarov, O. Matonoha, M. Lomnitz, I. M. Deppner, N. G. Minaev, Catherine Tomkiel, Hank Crawford, T. Ullrich, H. Z. Huang, Yi Wang, R. Pak, Siwei Luo, Feng Liu, A. I. Hamad, Sedigheh Jowzaee, P. Filip, Dave Underwood, Rafal Sikora, Gene Van Buren, Bill Christie, Hans Georg Ritter, Declan Keane, Xinjie Huang, Joseph Adams, Prithwish Tribedy, B. K. Srivastava, Juan M. Romero, Shengli Huang, T. G. Dedovich, Isaac Mooney, Shenghui Zhang, William Jacobs, B. Schmidke, Alena Harlenderova, H. W. Ke, L. Fulek, Yang Wu, Anik Gupta, Frank Jm Geurts, T. Galatyuk, K. Meehan, Jindrich Lidrych, Yifan Hong, Song Zhang, Zebo Tang, K. Yip, Giacomo Contin, Rongrong Ma, Nihar Sahoo, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, Roland Laszlo Pinter, R. Fatemi, Todd Kinghorn, Brian Page, Ming Shao, M. Cherney, Rosi Reed, Lokesh Kumar, A. V. Brandin, Hua Pei, S. K. Tripathy, Vipul Bairathi, Irakli Chakaberia, Y. Fisyak, K. Oh, Qian Yang, Richard Daniel Majka, D. Kalinkin, S. Heppelmann, Xin Li, B. J. Summa, S. Siejka, Z. Y. Zhang, P. Seyboth, Jan Vanek, Leszek Adamczyk, S. Ramachandran, O. Eyser, Jianping Cheng, Sergei A. Voloshin, S. Vokal, Yue Liang, Wei Xie, Hal Spinka, Hao-jie Xu, Roy A. Lacey, T. Edmonds, Pengfei Wang, P. V. Shanmuganathan, D. Mallick, G. Igo, K. Kauder, A. Taranenko, F. G. Atetalla, Alexander Schmah, Lanny Ray, H. Liu, David Stewart, Jakub Kvapil, Sevil Salur, A. K. Bhati, Nikolai Smirnov, Xiaoping Zhang, L. G. Efimov, L. Didenko, Peng Liu, Wlodek Guryn, Y. Panebratsev, Saehanseul Oh, D. Grosnick, R. Aoyama, Samuel Heppelmann, B. Tu, Qinghua Xu, Maksym Zyzak, D. D. Brown, R. Seto, James Brandenburg, K. N. Barish, T. Tarnowsky, Xianglei Zhu, and A. A. Derevschikov
Subjects: Physics, Quark, Particle physics, Proton, 010308 nuclear & particles physics, Drell–Yan process, 01 natural sciences, Helicity, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Spin-½, Boson
Abstract: We report new STAR measurements of the single-spin asymmetries $A_L$ for $W^+$ and $W^-$ bosons produced in polarized proton--proton collisions at $\sqrt{s}$ = 510 GeV as a function of the decay-positron and decay-electron pseudorapidity. The data were obtained in 2013 and correspond to an integrated luminosity of 250 pb$^{-1}$. The results are combined with previous results obtained with 86 pb$^{-1}$. A comparison with theoretical expectations based on polarized lepton-nucleon deep-inelastic scattering and prior polarized proton--proton data suggests a difference between the $\bar{u}$ and $\bar{d}$ quark helicity distributions for $0.05 < x < 0.25$. In addition, we report new results for the double-spin asymmetries $A_{LL}$ for $W^\pm$, as well as $A_L$ for $Z/\gamma^*$ production and subsequent decay into electron--positron pairs.
Published: 2019
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33. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at GeV *

Author: H. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, D. R. Beavis, N. K. Behera, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, A. Feng, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, A. Geromitsos, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. Ke, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, A. G. Knospe, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, M. Naglis, B. K. Nandi, T. K. Nayak, P. K. Netrakanti, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, null Oh, null Ohlson, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, H. Pei, T. Peitzmann, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, L. Ruan, J. Rusnak, N. R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, null Tribedy, O. D. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, Jr., R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten Jr., H. Wieman, S. W. Wissink, R. Witt, W. Witzke, Y. F. Wu, null Xiao, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Star (game theory), Elliptic flow, Zero (complex analysis), Astronomy and Astrophysics, Parton, Correlation function (quantum field theory), Nuclear matter, 01 natural sciences, 0103 physical sciences, 010306 general physics, Jet quenching, Centrality, Instrumentation
Abstract: Dihadron azimuthal correlations containing a high transverse momentum ( ) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20%-60%) Au+Au collisions at GeV as a function of the trigger particle's azimuthal angle relative to the event plane, . The azimuthal correlation is studied as a function of both the trigger and associated particle . The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with , with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity correlation) appears to drop with increasing while the jet-like component remains approximately constant. The correlation functions are further studied with the subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the -dependence of the ridge or the away-side double-peak structure. The dropping ridge with could be attributed to a -dependent elliptic anisotropy; however, the physics mechanism of the ridge remains an open question. Even with a -dependent elliptic flow, the away-side correlation structure is robust. These results, with extensive systematic studies of the dihadron correlations as a function of , trigger and associated particle , and the pseudo-rapidity range , should provide stringent inputs to help understand the underlying physics mechanisms of jet-medium interactions in high energy nuclear collisions.
Published: 2021
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34. Measurement of groomed jet substructure observables in p+p collisions at s=200 GeV with STAR

Author: Chong Kim, H. G. Ritter, E. Hoffman, Rafal Sikora, R. Bellwied, L. C. Bland, S. Singha, I. Vassiliev, S. Kabana, Chi Yang, M. Nie, Hiroyuki Sako, L. Fulek, S. Oh, Xiaofeng Luo, Guo-Liang Ma, N. Kulathunga Mudiyanselage, Vitaly Okorokov, M. Chevalier, Li Yi, Joseph Kwasizur, J. L. Drachenberg, Olga Evdokimov, Bernd Surrow, M. Shao, G. Van Buren, Benjamin Schweid, Frank Jm Geurts, Lukas Holub, Bedangadas Mohanty, Jongmin Lee, R. L. Ray, S. Choudhury, F. G. Atetalla, T. Galatyuk, S. S. Shi, O. D. Tsai, R. Ma, J. Engelage, N. Elsey, Z. Chang, T. Nonaka, W. B. Schmidke, A. Ewigleben, A. Francisco, K. Yip, C. Zhou, L. V. Nogach, T. Ljubicic, K. Kauder, I. Upsal, Zhigang Xiao, K. N. Barish, T. Huang, M. Csanad, C. A. Gagliardi, R. S. Longacre, Jay Roberts, Alexander Kiselev, G. Nigmatkulov, Lawrence Pinsky, Jing-Han Chen, Niseem Magdy, Y. Li, Alexandre Alarcon Do Passo Suaide, Maria Zurek, P. C. Weidenkaff, W. Q. Shen, K. Gopal, P. Kravtsov, Fuwang Shen, S. Fazio, S. H. Zhang, Xuliang Chen, Wei Li, Wei Xie, M. L. Kabir, Yunpeng Liu, Derek Anderson, X. H. He, A. Jentsch, H. W. Ke, Jaroslav Bielcik, Xiaofeng Zhu, Ying Liang, D. Mallick, Y. H. Leung, H. Liu, N. G. Minaev, Maria Stefaniak, J. D. Nam, A. Ogawa, Yicheng Feng, D. N. Svirida, David Stewart, B. Kimelman, E. P. Sichtermann, Sevil Salur, Y. Wang, O. V. Rogachevskiy, A. Quintero, P. Chaloupka, G. Igo, J. M. Landgraf, Y. Hong, J. C. Dunlop, L. Wen, Ting Lin, B. K. Chan, N. Xu, P. Filip, Sergey Voloshin, Michal Sumbera, Zebo Tang, A. Aparin, A. Pandav, Anthony Robert Timmins, Y. Panebratsev, S. Trentalange, M. U. Ashraf, C. Jena, D. Grosnick, Catherine Tomkiel, Hank Crawford, C-Q. Li, R. Licenik, J. Butterworth, Xinyue Ju, D. Chen, Zubayer Ahammed, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, N. Shah, M. Kelsey, Sujit Kumar Tripathy, A. A. Derevschikov, Z. Ye, Roland Laszlo Pinter, B. Pawlik, D. Isenhower, Madan M. Aggarwal, Fuqiang Wang, S. W. Wissink, S. K. Radhakrishnan, Christina Markert, D. Neff, Y. Zhang, M. Strikhanov, Y. F. Xu, C. Perkins, J. K. Adkins, A. Gibson, T. Ullrich, X. Huang, A. Kechechyan, Q. Y. Shou, K. Jiang, D. Kalinkin, Nasim, H. S. Matis, Q. H. Xu, R. Fatemi, K. Nayak, C. C. Zhang, R. Pak, Maksym Zyzak, Z. Wang, H. Caines, Z. Moravcova, W. W. Jacobs, J. B. Singh, Todd Kinghorn, X. Chu, L. K. Kosarzewski, K. Krueger, D. Zhang, Y. Hu, J. C. Webb, J. S. Wang, J. Lauret, A. Hamed, S. Esumi, J. M. Nelson, D. Kincses, R. Witt, J. Rusnak, Jorn Henning Putschke, A. V. Brandin, W. J. Llope, D. Keane, S. Mioduszewski, R. Seto, M. Tokarev, Yevheniia Khyzhniak, T. G. Dedovich, Takafumi Niida, R. Lednicky, L. Kochenda, T. Tarnowsky, Z. Tu, J. W. Harris, Nikolai Smirnov, N. Schmitz, Yanjun Wu, J. Sandweiss, M. Kocan, N.R. Sahoo, E. Shahaliev, L. Ruan, J. Adam, Arkadiy Taranenko, Prithwish Tribedy, N. S. Lukow, M. M. Mondal, Xiaoyu Liu, E. C. Aschenauer, W. Christie, B. K. Srivastava, S. Margetis, M. Cherney, R. Esha, T. D. S. Stanislaus, Andrey Vasiliev, I. G. Bordyuzhin, X. Dong, Z. Yang, S. He, Lokesh Kumar, Hua Pei, F. Videbæk, Jana Bielcikova, H. H. Wieman, E. G. Judd, X.G. Li, Janet Elizabeth Seger, P. Sorensen, I. M. Deppner, H. Xu, J. A. Mazer, A. H. Tang, Pengdong Wang, Anju Bhasin, J. L. Romero, Z. Zhang, K. Kang, A. Lebedev, Lukas Kramarik, J. D. Brandenburg, M. Sergeeva, E. Finch, Arghya Chatterjee, Zhaoping Liu, Diana Pawlowska, L. Didenko, I. Chakaberia, Tong Liu, Siwei Luo, F. Liu, Mariusz Przybycien, Y. Yang, M. I. Nagy, D. Kapukchyan, R. D. Majka, Jiangyong Jia, Isaac Mooney, Yinina Ma, J. Porter, Ivan Kisel, Z. J. Zhang, S. L. Huang, Shize Yang, S. Lan, F. Seck, M. Posik, Arabinda Behera, H. M. Spinka, J. H. Thomas, F-H. Chang, Q. Yang, G. S. Averichev, H. Z. Huang, S. Vokal, G. Xie, C. J. Feng, D. A. Morozov, T. Edmonds, T. J. Humanic, Yunlan Ji, S. Heppelmann, B. J. Summa, Xiangming Sun, S. Harabasz, H. Qiu, B. S. Page, D. P. Kikola, S. Ramachandran, O. Eyser, B. Stringfellow, P. V. Shanmuganathan, A. S. Nunes, N. K. Pruthi, M. Daugherity, G. Eppley, J. Pluta, N. Chankova-Bunzarova, Skipper Kagamaster, Y. J. Sun, L. Ma, Y. Xu, Zhiwan Xu, R. E. Tribble, Y. Lin, G. Agakishiev, D. Cebra, Zhanwen Zhu, Y. Fisyak, I. G. Alekseev, P. Szymanski, M. A. Lisa, P. Seyboth, G. Odyniec, C. Zhong, Jan Vanek, Leszek Adamczyk, P. Federic, Jianping Cheng, Z. Chen, G. Wang, J. R. Adams, Susumu Sato, W. Solyst, N. Herrmann, X. Sun, Daniel Nemes, Jie Zhao, S. Horvat, M. Simko, W. Zha, D. Tlusty, Peng Huo, W. Guryn, R. Lacey, J. Fedorisin, D. G. Underwood, Gary Westfall, V. Bairathi, W. He, A. Attri, P. Liu, Xuan Zhang, Hanna Paulina Zbroszczyk, R. Kunnawalkam Elayavalli, and R. Reed
Subjects: Quark, Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Jet (fluid), Astrophysics::High Energy Astrophysical Phenomena, Radius, Gluon, Momentum, Nuclear physics, DGLAP, High Energy Physics::Experiment, Nuclear Experiment, Parton shower
Abstract: In this letter, measurements of the shared momentum fraction ( z g ) and the groomed jet radius ( R g ), as defined in the SoftDrop algorithm, are reported in p+p collisions at s = 200 GeV collected by the STAR experiment. These substructure observables are differentially measured for jets of varying resolution parameters from R = 0.2 − 0.6 in the transverse momentum range 15 p T , jet 60 GeV/c. These studies show that, in the p T , jet range accessible at s = 200 GeV and with increasing jet resolution parameter and jet transverse momentum, the z g distribution asymptotically converges to the DGLAP splitting kernel for a quark radiating a gluon. The groomed jet radius measurements reflect a momentum-dependent narrowing of the jet structure for jets of a given resolution parameter, i.e., the larger the p T , jet , the narrower the first splitting. For the first time, these fully corrected measurements are compared to Monte Carlo generators with leading order QCD matrix elements and leading log in the parton shower, and to state-of-the-art theoretical calculations at next-to-leading-log accuracy. We observe that PYTHIA 6 with parameters tuned to reproduce RHIC measurements is able to quantitatively describe data, whereas PYTHIA 8 and HERWIG 7, tuned to reproduce LHC data, are unable to provide a simultaneous description of both z g and R g , resulting in opportunities for fine parameter tuning of these models for p+p collisions at RHIC energies. We also find that the theoretical calculations without non-perturbative corrections are able to qualitatively describe the trend in data for jets of large resolution parameters at high p T , jet , but fail at small jet resolution parameters and low jet transverse momenta.
Published: 2020
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35. Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at GeV *

Author: J. Adam, L. Adamczyk, J. R. Adams, J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, D. M. Anderson, A. Aparin, E. C. Aschenauer, M. U. Ashraf, F. G. Atetalla, A. Attri, G. S. Averichev, V. Bairathi, K. Barish, A. Behera, R. Bellwied, A. Bhasin, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, J. D. Brandenburg, A. V. Brandin, J. Butterworth, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, I. Chakaberia, P. Chaloupka, B. K. Chan, F-H. Chang, Z. Chang, N. Chankova-Bunzarova, A. Chatterjee, D. Chen, J. H. Chen, X. Chen, Z. Chen, J. Cheng, M. Cherney, M. Chevalier, S. Choudhury, W. Christie, X. Chu, H. J. Crawford, M. Csanád, M. Daugherity, T. G. Dedovich, I. M. Deppner, A. A. Derevschikov, L. Didenko, X. Dong, J. L. Drachenberg, J. C. Dunlop, T. Edmonds, N. Elsey, J. Engelage, G. Eppley, S. Esumi, O. Evdokimov, A. Ewigleben, O. Eyser, R. Fatemi, S. Fazio, P. Federic, J. Fedorisin, C. J. Feng, Y. Feng, P. Filip, E. Finch, Y. Fisyak, A. Francisco, L. Fulek, C. A. Gagliardi, T. Galatyuk, F. Geurts, A. Gibson, K. Gopal, D. Grosnick, W. Guryn, A. I. Hamad, A. Hamed, S. Harabasz, J. W. Harris, S. He, W. He, X. H. He, S. Heppelmann, N. Herrmann, E. Hoffman, L. Holub, Y. Hong, S. Horvat, Y. Hu, H. Z. Huang, S. L. Huang, T. Huang, X. Huang, T. J. Humanic, P. Huo, G. Igo, D. Isenhower, W. W. Jacobs, C. Jena, A. Jentsch, Y. JI, J. Jia, K. Jiang, S. Jowzaee, X. Ju, E. G. Judd, S. Kabana, M. L. Kabir, S. Kagamaster, D. Kalinkin, K. Kang, D. Kapukchyan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, M. Kelsey, Y. V. Khyzhniak, D. P. Kikoła, C. Kim, B. Kimelman, D. Kincses, T. A. Kinghorn, I. Kisel, A. Kiselev, M. Kocan, L. Kochenda, L. K. Kosarzewski, L. Kramarik, P. Kravtsov, K. Krueger, N. Kulathunga Mudiyanselage, L. Kumar, S. Kumar, R. Kunnawalkam Elayavalli, J. H. Kwasizur, R. Lacey, S. Lan, J. M. Landgraf, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, Y. H. Leung, C. Li, W. Li, X. Li, Y. Li, Y. Liang, R. Licenik, T. Lin, Y. Lin, M. A. Lisa, F. Liu, H. Liu, P. Liu, T. Liu, X. Liu, Y. Liu, Z. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, N. S. Lukow, S. Luo, X. Luo, G. L. Ma, L. Ma, R. Ma, Y. G. Ma, N. Magdy, R. Majka, D. Mallick, S. Margetis, C. Markert, H. S. Matis, J. A. Mazer, N. G. Minaev, S. Mioduszewski, B. Mohanty, I. Mooney, Z. Moravcova, D. A. Morozov, M. Nagy, J. D. Nam, Nasim Md., K. Nayak, D. Neff, J. M. Nelson, D. B. Nemes, M. Nie, G. Nigmatkulov, T. Niida, L. V. Nogach, T. Nonaka, A. S. Nunes, G. Odyniec, A. Ogawa, S. Oh, V. A. Okorokov, B. S. Page, R. Pak, A. Pandav, Y. Panebratsev, B. Pawlik, D. Pawlowska, H. Pei, C. Perkins, L. Pinsky, R. L. Pintér, J. Pluta, J. Porter, M. Posik, N. K. Pruthi, M. Przybycien, J. Putschke, H. Qiu, A. Quintero, S. K. Radhakrishnan, S. Ramachandran, R. L. Ray, R. Reed, H. G. Ritter, O. V. Rogachevskiy, J. L. Romero, L. Ruan, J. Rusnak, N. R. Sahoo, H. Sako, S. Salur, J. Sandweiss, S. Sato, W. B. Schmidke, N. Schmitz, B. R. Schweid, F. Seck, J. Seger, M. Sergeeva, R. Seto, P. Seyboth, N. Shah, E. Shahaliev, P. V. Shanmuganathan, M. Shao, A. I. Sheikh, F. Shen, W. Q. Shen, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. Sikora, M. Simko, J. Singh, S. Singha, N. Smirnov, W. Solyst, P. Sorensen, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, M. Stefaniak, D. J. Stewart, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. Sumbera, B. Summa, X. M. Sun, X. Sun, Y. Sun, B. Surrow, D. N. Svirida, P. Szymanski, A. H. Tang, Z. Tang, A. Taranenko, T. Tarnowsky, J. H. Thomas, A. R. Timmins, D. Tlusty, M. Tokarev, C. A. Tomkiel, S. Trentalange, R. E. Tribble, P. Tribedy, S. K. Tripathy, O. D. Tsai, Z. Tu, T. Ullrich, D. G. Underwood, I. Upsal, G. Van Buren, J. Vanek, A. N. Vasiliev, I. Vassiliev, F. Videbæk, S. Vokal, S. A. Voloshin, F. Wang, G. Wang, J. S. Wang, P. Wang, Y. Wang, Z. Wang, J. C. Webb, P. C. Weidenkaff, L. Wen, G. D. Westfall, H. Wieman, S. W. Wissink, R. Witt, Y. Wu, Z. G. Xiao, G. Xie, W. Xie, H. Xu, N. Xu, Q. H. Xu, Y. F. Xu, Y. Xu, Z. Xu, C. Yang, Q. Yang, S. Yang, Y. Yang, Z. Yang, Z. Ye, L. Yi, K. Yip, H. Zbroszczyk, W. Zha, C. Zhang, D. Zhang, S. Zhang, X. P. Zhang, Y. Zhang, Z. J. Zhang, Z. Zhang, J. Zhao, C. Zhong, C. Zhou, X. Zhu, Z. Zhu, M. Zurek, and M. Zyzak
Subjects: Physics, Nuclear and High Energy Physics, Energy loss, 010308 nuclear & particles physics, Subtraction, Astronomy and Astrophysics, Parton, 01 natural sciences, Nuclear physics, Pseudorapidity, 0103 physical sciences, Transverse momentum, Heavy ion, 010306 general physics, Anisotropy, Instrumentation
Abstract: High transverse momentum ( ) particle production is suppressed owing to the parton (jet) energy loss in the hot dense medium created in relativistic heavy-ion collisions. Redistribution of energy at low-to-modest has been difficult to measure, owing to large anisotropic backgrounds. We report a data-driven method for background evaluation and subtraction, exploiting the away-side pseudorapidity gaps, to measure the jetlike correlation shape in Au+Au collisions at GeV in the STAR experiment. The correlation shapes, for trigger particles and various associated particle ranges within , are consistent with Gaussians, and their widths increase with centrality. The results indicate jet broadening in the medium created in central heavy-ion collisions.
Published: 2020
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36. Methods for a blind analysis of isobar data collected by the STAR collaboration

Author: J. K. Adkins, J. Porter, H. Z. Huang, Nasim, R. Fatemi, S. Vokal, Y. Hong, G. Xie, D. N. Svirida, J. C. Dunlop, L. Wen, Todd Kinghorn, K. Krueger, M. S. Daugherity, A. Pandav, M. U. Ashraf, C. Jena, Zubayer Ahammed, Y. J. Sun, Zebo Tang, J. C. Webb, M. Sergeeva, T. J. Humanic, I. Kisel, Z. J. Zhang, M. Tokarev, J. Putschke, Mate Csanad, C. J. Feng, Y. Li, Xuan Zhang, Siwei Luo, R. Seto, W. He, M. Kelsey, B. S. Page, Q. Y. Shou, N. Xu, P. Filip, M. Cherney, Xiangming Sun, D. P. Kikola, M. I. Nagy, S. Choudhury, Z. Yang, B. Stringfellow, T. Edmonds, Hanna Paulina Zbroszczyk, S. He, Jaroslav Bielcik, D. Kapukchyan, R. Pak, Hua Pei, A. S. Nunes, I. Vassiliev, N. Kulathunga Mudiyanselage, C. Perkins, I. G. Alekseev, J. L. Drachenberg, Olga Evdokimov, Y. Hu, T. Nonaka, M. A. Lisa, R. Kunnawalkam Elayavalli, R. Reed, Wei Li, Shize Yang, I. Upsal, Wei Xie, T. D. S. Stanislaus, F. Videbæk, L. K. Kosarzewski, A. Jentsch, J. D. Nam, Tong Liu, He Xinzhong, J. M. Nelson, W. J. Llope, A. Aparin, O. V. Rogachevskiy, H. H. Wieman, A. Quintero, B. J. Summa, Maria Zurek, P. Sorensen, A. V. Brandin, J. Adam, S. Lan, F. Seck, H. W. Ke, G. Odyniec, C. Zhong, S. Harabasz, K. Kauder, S. K. Radhakrishnan, M. Zyzak, N. Schmitz, J. D. Brandenburg, Yicheng Feng, Y. Shi, M. Posik, E. Shahaliev, A. Attri, Arkadiy Taranenko, P. Huo, Frank Jm Geurts, T. Galatyuk, Y. Yu, S. Ramachandran, H. M. Spinka, C. Li, J. Engelage, O. Eyser, L. Didenko, I. Chakaberia, R. Witt, Z. Chen, L. V. Nogach, J. L. Romero, S. Mioduszewski, G. Nigmatkulov, K. N. Barish, Diana Pawlowska, C. Zhou, B.R. Schweid, Lukas Kramarik, Sujit Kumar Tripathy, Sanjeev Kumar, Madan M. Aggarwal, Y. He, E. Finch, Robert Licenik, Anthony Robert Timmins, Isaac Mooney, Fuqiang Wang, J. B. Singh, Prithwish Tribedy, B. K. Srivastava, Joseph Kwasizur, Susumu Sato, J. H. Thomas, Shengli Huang, D. A. Morozov, J. M. Landgraf, Xiaofeng Luo, Roland Laszlo Pinter, Takafumi Niida, Hao Qiu, W. Solyst, D. Chen, Guo-Liang Ma, X. Sun, M. Shao, G. Van Buren, Daniel Nemes, Yinina Ma, Jie Zhao, S. Horvat, M. Strikhanov, Li Yi, S. S. Shi, X. Huang, A. A. Derevschikov, A. Kechechyan, H. Caines, D. Kalinkin, F-H. Chang, Q. Yang, J. Sandweiss, Yawen Wang, Xiaoyu Liu, Sergey Voloshin, Xinyue Ju, G. Agakishiev, P. Kravtsov, K. Jiang, D. Cebra, D. Zhang, Jing-Han Chen, Zhanwen Zhu, Yanjun Wu, S. Fazio, Xuliang Chen, T. G. Dedovich, A. Hamed, S. Esumi, Maria Stefaniak, G. S. Averichev, W. Zha, Vitaly Okorokov, J. R. Adams, R. Lacey, Bernd Surrow, N. Elsey, Alexander Kiselev, D. G. Underwood, Z. Chang, D. Kincses, W. B. Schmidke, X. Gou, C. A. Gagliardi, Gary Westfall, E. G. Judd, J. Chen, J. Jia, V. Bairathi, Peter Q. Liu, Nilay Shah, Lokesh Kumar, Lawrence Pinsky, Lukas Holub, Bedangadas Mohanty, D. Tlusty, A. Ewigleben, A. Francisco, G. Eppley, K. Yip, J. S. Wang, A. I. Sheikh, W. Guryn, J. Pluta, P. Chaloupka, N. Chankova-Bunzarova, Skipper Kagamaster, L. Ma, Y. Xu, Ting Lin, Z. J. Xu, R. E. Tribble, Y. Lin, J. Fedorisin, Z. Liu, Yunlan Ji, S. Trentalange, Y. H. Leung, W. Christie, B. Pawlik, Subhash Singha, Andrey Vasiliev, A. Gibson, B. K. Chan, Michal Sumbera, A. A. P. Suaide, S. Zhang, Catherine Tomkiel, Hank Crawford, X.G. Li, S. W. Wissink, D. Neff, Janet Elizabeth Seger, Y. Zhang, I. M. Deppner, Anju Bhasin, P. V. Shanmuganathan, Z. Zhang, K. Kang, Arabinda Behera, A. Lebedev, L. Adamczyk, N. K. Pruthi, L. C. Bland, Y. F. Xu, S. Kabana, R. S. Longacre, Chi Yang, M. Calderon De La Barca Sanchez, A. I. Hamad, M. L. Kabir, Sedigheh Jowzaee, Arghya Chatterjee, D. Mallick, G. Igo, J. Butterworth, M. Nie, Z. Ye, N. G. Minaev, F. Liu, Zuojia Wang, Miroslav Simko, Mariusz Przybycien, Q. H. Xu, X. Chu, Y. Yang, P. Seyboth, J. W. Harris, R. D. Majka, N. S. Lukow, Jan Vanek, Hiroyuki Sako, L. Fulek, Chi Zhang, Chong Kim, A. H. Tang, Pengdong Wang, H. G. Ritter, P. Federic, Jianping Cheng, N. R. Sahoo, E. Hoffman, Rafal Sikora, R. Bellwied, Xiaofeng Zhu, Ying Liang, G. Wang, A. Ogawa, N. Herrmann, I. G. Bordyuzhin, J. A. Mazer, Y. Fisyak, Christina Markert, H. S. Matis, Z. Moravcova, W. W. Jacobs, J. Lauret, P. Szymanski, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, T. Tarnowsky, Z. Tu, Zhigang Xiao, T. Huang, M. Chevalier, Yunpeng Liu, Derek Anderson, Y. Panebratsev, D. Grosnick, Jongmin Lee, R. L. Ray, B. Kimelman, R. Ma, D. Isenhower, J. Rusnak, M. Kocan, L. Ruan, T. Ljubicic, Samuel Heppelmann, Jana Bielcikova, K. Nayak, Niseem Magdy, F. G. Atetalla, O. D. Tsai, E. P. Sichtermann, Seongshik Oh, P. C. Weidenkaff, W. Q. Shen, K. Gopal, T. Ullrich, H. S. Xu, H. Liu, David Stewart, E. C. Aschenauer, S. Margetis, X. Dong, Sevil Salur, D. Keane, and Nikolai Smirnov
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Star (game theory), Order (ring theory), FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Combinatorics, High Energy Physics - Experiment (hep-ex), Nuclear Energy and Engineering, Reference sample, 0103 physical sciences, Isobar, Magnetic effect, Experimental methods, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment
Abstract: In 2018, the STAR collaboration collected data from $$_{44}^{96}{\mathrm{Ru}}+_{44}^{96}{\mathrm{Ru}}$$ and $$_{40}^{96}{\mathrm{Zr}}+_{40}^{96}{\mathrm{Zr}}$$ at $$\sqrt{s_\text {NN}}=200$$ GeV to search for the presence of the chiral magnetic effect in collisions of nuclei. The isobar collision species alternated frequently between $$_{44}^{96}{\mathrm{Ru}}+_{44}^{96}{\mathrm{Ru}}$$ and $$_{40}^{96}{\mathrm{Zr}}+_{40}^{96}{\mathrm{Zr}}$$ . In order to conduct blind analyses of studies related to the chiral magnetic effect in these isobar data, STAR developed a three-step blind analysis procedure. Analysts are initially provided a “reference sample” of data, comprised of a mix of events from the two species, the order of which respects time-dependent changes in run conditions. After tuning analysis codes and performing time-dependent quality assurance on the reference sample, analysts are provided a species-blind sample suitable for calculating efficiencies and corrections for individual $$\approx 30$$ -min data-taking runs. For this sample, species-specific information is disguised, but individual output files contain data from a single isobar species. Only run-by-run corrections and code alteration subsequent to these corrections are allowed at this stage. Following these modifications, the “frozen” code is passed over the fully un-blind data, completing the blind analysis. As a check of the feasibility of the blind analysis procedure, analysts completed a “mock data challenge,” analyzing data from $${\mathrm{Au}}+{\mathrm{Au}}$$ collisions at $$\sqrt{s_\text {NN}}=27$$ GeV, collected in 2018. The $${\mathrm{Au}}+{\mathrm{Au}}$$ data were prepared in the same manner intended for the isobar blind data. The details of the blind analysis procedure and results from the mock data challenge are presented.
Published: 2019
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37. Beam energy dependence of (anti-)deuteron production in Au + Au collisions at the BNL Relativistic Heavy Ion Collider

Author: Yang Wu, Anik Gupta, Frank Jm Geurts, T. Galatyuk, B. K. Chan, Michal Sumbera, Catherine Tomkiel, Hank Crawford, D. Mallick, Paul Sorensen, K. Meehan, D. Kalinkin, P. Chaloupka, Ting Lin, G. Igo, S. Heppelmann, Xin Li, B. J. Summa, Gary Westfall, Peng Liu, Wlodek Guryn, Z. Y. Zhang, Y. Panebratsev, Saehanseul Oh, D. Grosnick, K. Kauder, A. Taranenko, K. Yip, Siwei Luo, Zhongbin Xu, H. W. Ke, L. Fulek, D. P. Kikola, R. Aoyama, Mariusz Przybycien, Lukas Kramarik, Xiaofeng Luo, S. Ramachandran, O. Eyser, B. Stringfellow, Sooraj Krishnan Radhakrishnan, R. Fatemi, Todd Kinghorn, Long Ma, Joseph Adams, Jiangyong Jia, T. G. Dedovich, A. H. Tang, Sergei A. Voloshin, E. Finch, Maria Stefaniak, Guo-Liang Ma, Li Yi, Samuel Heppelmann, B. Tu, Ming Shao, Feng Liu, Yifan Hong, Song Zhang, Zebo Tang, Isaac Upsal, Xiangming Sun, Yanfang Liu, J. Fedorisin, Isaac Mooney, Shenghui Zhang, Benjamin Schweid, T. J. Humanic, D. Arkhipkin, W. J. Llope, I. G. Bordyuzhin, S. Vokal, Yue Liang, J. Bryslawskyj, Yi Wang, T. Nonaka, Wei Li, M. Cherney, Rosi Reed, Lokesh Kumar, Hal Spinka, Hans Georg Ritter, A. I. Hamad, William Jacobs, Sedigheh Jowzaee, Alexander Jentsch, Dave Underwood, Chris Perkins, Wei Xie, A. K. Bhati, Z. Moravcova, Robert E. Tribble, Nikolai Smirnov, Xiaoping Zhang, A. Attri, Alexander Vasiliev, Tetsuro Sugiura, Muhammad Usman Ashraf, T. Ljubicic, P. Huo, Qinghua Xu, Kejun Kang, L. V. Nogach, Hua Pei, S. K. Tripathy, N. K. Pruthi, O. D. Tsai, Xinyue Ju, Zhen Liu, S. W. Wissink, S. Kabana, E. Shahaliev, F. G. Atetalla, Prithwish Tribedy, B. K. Srivastava, Juan M. Romero, X. Zhu, Maksym Zyzak, Z. Ye, Mate Csanad, Lanny Ray, Nu Xu, Raghav Kunnawalkam Elayavalli, Nasim, Maowu Nie, P. Kravtsov, Shengli Huang, Declan Keane, A. Kechechyan, H. Liu, Hao-jie Xu, David Stewart, ShinIchi Esumi, J. C. Dunlop, L. Wen, Janet Elizabeth Seger, Roy A. Lacey, T. Edmonds, Pengfei Wang, Sevil Salur, I. M. Deppner, G. Eppley, R. Seto, E. P. Sichtermann, Rongrong Ma, I. K. Yoo, Xiaoyu Liu, M. Sergeeva, Roli Esha, Daniel Nemes, Jie Zhao, Peifeng Liu, Nalinda Kulathunga Mudiyanselage, Joel Anthony Mazer, Brian Page, Lei Zhang, Spiros Margetis, Zubayer Ahammed, Cheng Li, D. Kapukchyan, Nihar Sahoo, A. V. Brandin, Norbert Schmitz, J. Pluta, N. Chankova-Bunzarova, V. A. Okorokov, Skipper Kagamaster, Subhash Singha, Chong Kim, Yu-Gang Ma, Anju Bhasin, H. Z. Huang, Manuel Calderon De La Barca Sanchez, Gang Wang, James Brandenburg, K. N. Barish, Christina Markert, Rafal Sikora, Guannan Xie, Chensheng Zhou, R. Bellwied, E. G. Judd, Takafumi Niida, Vipul Bairathi, Liang He, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, R. Lednicky, L. C. Bland, A. Lipiec, Yi-Fei Xu, M. Tokarev, Yang Yang, Matthew Kelsey, Feng-Han Chang, Qian Yang, Roland Laszlo Pinter, Hanna Paulina Zbroszczyk, H. S. Matis, D. Tlusty, A. Lebedev, R. Pak, T. Tarnowsky, T. Ullrich, Richard Daniel Majka, D. N. Svirida, J. L. Drachenberg, Olga Evdokimov, A. Hamed, Kun Jiang, A. A. Derevschikov, Jay Roberts, J. Porter, P. Szymanski, Maria Zurek, Dingwei Zhang, L. K. Kosarzewski, Lukas Holub, Bedangadas Mohanty, F. Videbæk, Tong Liu, H. H. Wieman, Arghya Chatterjee, K. Krueger, Yicheng Feng, R. Witt, Joseph Kwasizur, J. Lauret, Neha Shah, Jaroslav Adam, Jeong-Hun Lee, L. Didenko, I. Chakaberia, Yaping Wang, C. Zhong, Yevheniia Khyzhniak, S. Stanislaus, L. Kochenda, Xiaolong Chen, Miroslav Simko, Ron Longacre, Yuanjing Ji, J. Engelage, Alexandre Alarcon Do Passo Suaide, Arabinda Behera, X. Dong, Jing-Han Chen, Qiye Shou, J. W. Harris, Yifei Zhang, Shuai Yang, J. M. Landgraf, J. Schambach, Dmitry Morozov, Diana Pawlowska, Norbert Herrmann, J. Putschke, M. Strikhanov, H. Caines, A. Ogawa, J. Sandweiss, Kishora Nayak, J. Rusnak, Subhasis Chattopadhyay, M. Kocan, L. Ruan, I. Bunzarov, O. Matonoha, Jana Bielcikova, P. Filip, Gene Van Buren, Bill Christie, I. Vassiliev, Niseem Magdy Abdelwahab Abdelrahman, Zhigang Xiao, Jagbir Singh, T. Huang, Derek Anderson, N. G. Minaev, I. G. Alekseev, M. A. Lisa, G. Agakishiev, S. Horvat, D. Cebra, S. Trentalange, Zhanwen Zhu, Justin Ewigleben, G. Odyniec, J. C. Webb, W. Solyst, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, Ivan Kisel, Y. K. Sun, Bernd Surrow, N. Elsey, J. H. Thomas, Yuliang Sun, C. A. Gagliardi, Jaroslav Bielcik, Yuanjing Li, G. S. Averichev, O. V. Rogachevskiy, Saskia Mioduszewski, Shusu Shi, F. Seck, M. Posik, S. Siejka, P. Seyboth, Jan Vanek, P. Federic, Jianping Cheng, Y. Fisyak, and K. Oh
Subjects: Physics, 010308 nuclear & particles physics, Equation of state (cosmology), 01 natural sciences, REAÇÕES NUCLEARES, Nuclear physics, Baryon, Deuterium, 0103 physical sciences, Transverse momentum, Quark–gluon plasma, Production (computer science), 010306 general physics, Relativistic Heavy Ion Collider, Beam energy
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Crawford, HJ; Csanad, M; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A; Grosnick, D; Gupta, A; Guryn, W | Abstract: We report the energy dependence of mid-rapidity (anti-)deuteron production in Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV, measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider. The yield of deuterons is found to be well described by the thermal model. The collision energy, centrality, and transverse momentum dependence of the coalescence parameter B2 are discussed. We find that the values of B2 for antideuterons are systematically lower than those for deuterons, indicating that the correlation volume of antibaryons is larger than that of baryons at sNN from 19.6 to 39 GeV. In addition, values of B2 are found to vary with collision energy and show a broad minimum around sNN=20-40 GeV, which might imply a change of the equation of state of the medium in these collisions.
Published: 2019

38. Improved measurement of the longitudinal spin transfer to Λ and Λ¯ hyperons in polarized proton-proton collisions at s=200 GeV

Author: J. Engelage, Roli Esha, K. N. Barish, Jana Bielcikova, J. Fedorisin, Mate Csanad, Olga Evdokimov, A. V. Brandin, J. Cheng, E. Finch, Xuedong Bai, G. Eppley, Giacomo Contin, L. Fulek, Arka Chatterjee, Y. Fisyak, X. C. Chen, R. Aoyama, Irakli Chakaberia, P. Chaloupka, J. C. Dunlop, Jaroslav Adam, J. H. Chen, Zubayer Ahammed, S. Fazio, I. G. Bordyuzhin, N. Chankova-Bunzarova, A. A. Derevschikov, A. Attri, J. L. Drachenberg, H. J. Crawford, J. K. Adkins, L. C. Bland, R. Fatemi, F-H. Chang, P. Federic, R. Cendejas, Rene Bellwied, W. Christie, Muhammad Usman Ashraf, D. N. Brown, M. Cherney, N. Elsey, J. Bryslawskyj, A. K. Bhati, G. S. Averichev, Derek Anderson, A. Aparin, Z. Chang, O. Eyser, D. Arkhipkin, J. D. Brandenburg, T. G. Dedovich, L. G. Efimov, P. Filip, I. M. Deppner, Adams, Anju Bhasin, C. E. Flores, Bairathi, A. J. Bassill, I. Bunzarov, S. Das, L. Adamczyk, L. Didenko, P. Federicova, F. G. Atetalla, B. K. Chan, Arabinda Behera, M. Calderon De La Barca Sanchez, Madan M. Aggarwal, C. Dilks, S. Esumi, Jaroslav Bielcik, Sukalyan Chattopadhyay, H. Caines, E. C. Aschenauer, X. Dong, Justin Ewigleben, J. M. Butterworth, I. G. Alekseev, Jian Deng, G. Agakishiev, and D. Cebra
Subjects: Physics, Strange quark, 010308 nuclear & particles physics, Forward scatter, Nuclear Theory, Hyperon, 01 natural sciences, Helicity, Nuclear physics, Distribution function, Pseudorapidity, 0103 physical sciences, Figure of merit, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, STAR detector
Abstract: The longitudinal spin transfer DLL to Λ and Λ¯ hyperons produced in high-energy polarized proton-proton collisions is expected to be sensitive to the helicity distribution functions of strange quarks and antiquarks of the proton, and to longitudinally polarized fragmentation functions. We report an improved measurement of DLL from data obtained at a center-of-mass energy of s=200 GeV with the STAR detector at RHIC. The data have an approximately twelve times larger figure of merit than prior results and cover |η
Published: 2018
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39. Transverse spin transfer to Λ and Λ¯ hyperons in polarized proton-proton collisions at s=200 GeV

Author: N. Chankova-Bunzarova, Anju Bhasin, A. J. Bassill, L. Adamczyk, P. Federicova, P. Chaloupka, I. M. Deppner, Sumit R. Das, L. G. Efimov, A. V. Brandin, Arabinda Behera, Mcdlb Sanchez, Roli Esha, S. Fazio, Giacomo Contin, J. C. Dunlop, D. Arkhipkin, I. G. Alekseev, Irakli Chakaberia, W. Christie, Arka Chatterjee, Zubayer Ahammed, R. Aoyama, Jianping Cheng, T. Galatyuk, X. C. Chen, C. Dilks, J. L. Drachenberg, M. Csanad, Olga Evdokimov, Jana Bielcikova, F. G. Atetalla, C. E. Flores, L. Fulek, J. Butterworth, Jaroslav Adam, T. G. Dedovich, P. Filip, E. C. Aschenauer, X. Dong, P. Federic, L. C. Bland, A. Aparin, G. Agakishiev, Y. Fisyak, J. K. Adkins, D. Cebra, R. Fatemi, Muhammad Usman Ashraf, J. Engelage, Jing-Han Chen, Justin Ewigleben, J. Bryslawskyj, M. Cherney, Subhasis Chattopadhyay, I. Bunzarov, J. Fedorisin, R. Bellwied, D. N. Brown, A. K. Bhati, Derek Anderson, Bairathi, B. K. Chan, O. Eyser, J. D. Brandenburg, I. G. Bordyuzhin, Hank Crawford, E. Finch, L. Didenko, Xuedong Bai, K. N. Barish, H. Caines, A. A. Derevschikov, F-H. Chang, G. S. Averichev, Madan M. Aggarwal, S. Esumi, N. Elsey, Z. Chang, Adams, C. A. Gagliardi, Jaroslav Bielcik, A. Attri, and G. Eppley
Subjects: Quark, Physics, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hyperon, Polarization (waves), 01 natural sciences, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, STAR detector, Spin-½
Abstract: © 2018 authors. Published by the American Physical Society. The transverse spin transfer from polarized protons to Λ and Λ hyperons is expected to provide sensitivity to the transversity distribution of the nucleon and to the transversely polarized fragmentation functions. We report the first measurement of the transverse spin transfer to Λ and Λ along the polarization direction of the fragmenting quark, DTT, in transversely polarized proton-proton collisions at s=200 GeV with the STAR detector at RHIC. The data correspond to an integrated luminosity of 18 pb-1 and cover the pseudorapidity range |η
Published: 2018
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40. Erratum: Observation of D0 Meson Nuclear Modifications in Au+Au Collisions at sNN=200 GeV [Phys. Rev. Lett. 113 , 142301 (2014)]

Author: Zebo Tang, Janusz Chwastowski, Leo Clifford Greiner, C. Perkins, F. Ding, P. Djawotho, F. Videbæk, G. Webb, Wenbin Yan, Y. Panebratsev, D. Grosnick, Rihan Haque, Zhigang Xiao, H. Z. Huang, S. Vokal, Sukalyan Chattopadhyay, N. G. Minaev, Z. Z. Xu, Madan M. Aggarwal, Fuqiang Wang, Jaroslav Bielcik, Jie Zhang, A. Vossen, Nikita Smirnov, O. D. Tsai, Y. Zawisza, M. J. Skoby, Frank Jm Geurts, K. Yip, J. S. Wang, N. Xu, P. Filip, H. W. Ke, O. V. Rogachevskiy, H. J. Jang, T. Kollegger, F. Liu, D. D. Koetke, M. C. Cervantes, J. H. Chen, Li-Zhu Chen, W. Q. Shen, Vitaly Okorokov, Bernd Surrow, P. Pile, G. D. Westfall, B. Pawlik, R. R. Debbe, D. A. Morozov, Nasim, S. Das, B. Huang, A. Gupta, D. Solanki, Mariusz Przybycien, L. Kotchenda, W. B. Schmidke, C. A. Gagliardi, M. Pachr, D. Garand, Y. Wang, Y. F. Xu, S. Dhamija, M. Lomnitz, Sevil Salur, Basanta Kumar Nandi, M. Tokarev, D. Tlusty, D. Kalinkin, S. Zhang, S. G. Brovko, R. D. Majka, S. Heppelmann, J. Rusnak, N. K. Pruthi, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, A. F. Kraishan, D. N. Svirida, Niladribihari Sahoo, T. D. S. Stanislaus, L. Ruan, A. M. Poskanzer, Maxence Vandenbroucke, M. K. Mustafa, S. K. Gupta, Giacomo Contin, J. L. Drachenberg, W. Borowski, J. Schambach, Anju Bhasin, Z. H. Khan, Guo-Liang Ma, S. Ramachandran, G. Eppley, Y. Li, H. H. Wieman, Li Yi, A. Chikanian, C. Yang, I. Sakrejda, O. Eyser, J. Pluta, M. Zyzak, Stephen V. Gliske, A. K. Bhati, D. Keane, Y. F. Wu, K. Kang, Aditi Banerjee, R. Stock, W. Li, A. Lebedev, L. G. Efimov, T. J. Humanic, J. Putschke, E. Sangaline, D. Arkhipkin, Xiaofeng Zhu, D. P. Mahapatra, T. K. Nayak, Z. P. Zhang, A. Hamed, A. S. Hirsch, J. Engelage, Rene Bellwied, H. G. Ritter, G. Nigmatkulov, P. Kravtsov, A. M. Schmah, Y. H. Zhu, R. E. Tribble, Dmitry Smirnov, Z. Ye, T. P. Burton, Jize Zhao, Y. Yang, Gerald W Hoffmann, X. Huang, A. Kechechyan, J. M. Landgraf, D. J. Hofman, Xiangyuan Cui, W. Christie, Nilay Shah, Pradip Kumar Sahu, R. Cendejas, A. V. Brandin, A. Ogawa, P. Chaloupka, Andrey Vasiliev, M. Strikhanov, K. Xin, J. Takahashi, S. Trentalange, X.G. Li, H. F. Chen, P. Huck, M. A. C. Lamont, S. B. Nurushev, J. Konzer, P. Sorensen, Janet Elizabeth Seger, D. L. Olvitt, A. Kesich, G. Odyniec, J. Sandweiss, J. Turnau, M. Shao, Y. X. Pan, G. Van Buren, S. Fazio, I. G. Bordyuzhin, S. S. Shi, Mirko Planinic, Jana Bielcikova, Anthony Robert Timmins, Adam Ryszard Kisiel, Prabhat Ranjan Pujahari, J. L. Romero, J. M. Nelson, H. J. Crawford, J. K. Adkins, Y. G. Ma, W. Peryt, E. Finch, C-Q. Li, R. P. Scharenberg, Christina Markert, R. Fatemi, O. Rusnakova, H. S. Matis, W. W. Jacobs, J. Lauret, J. A. Vanfossen, R. Lednicky, Haiyan Wang, J. F. Ross, X. M. Sun, Wei Xie, T. G. Dedovich, M. Cherney, Xiangming Sun, A. Aparin, G. M.S. Vasconcelos, Y. Pandit, K. S. Engle, Lokesh Kumar, Hua Pei, N. Schmitz, E. Shahaliev, Amal Sarkar, I. Koralt, N. Yu, L. V. Nogach, J. H. Thomas, G. S. Averichev, Jian Deng, J. Porter, Ivan Kisel, G. Agakishiev, D. S. Gunarathne, E. P. Sichtermann, A. Roy, Z. Chang, D. Cebra, Rashmi Raniwala, H. M. Spinka, T. Ullrich, Radoslaw Antoni Kycia, C. M. Du, H. S. Xu, L. Eun, I. G. Alekseev, Y. Guo, Jongmin Lee, R. L. Ray, M. A. Lisa, T. Ljubicic, C. D. Anson, R. Witt, H. Caines, Sudhir Raniwala, A. Quintero, S. Mioduszewski, Bedangadas Mohanty, Zhiming Li, H. Bichsel, A. Gibson, Y. Zoulkarneeva, C. Zhong, X. L. Wang, Donald M. McDonald, E. C. Aschenauer, S. Margetis, Prithwish Tribedy, B. K. Srivastava, Alice Elisabeth Ohlson, X. Dong, S. K. Pal, Justin Stevens, J. M. Butterworth, M. Calderon De La Barca Sanchez, M. Wada, J. C. Webb, Robert Vertesi, Olga Evdokimov, Barbara Antonina Trzeciak, H. Masui, L. Didenko, I. K. Yoo, Hao Qiu, P. V. Shanmuganathan, T. Tarnowsky, L. E. Dunkelberger, M. M. Mondal, C. E. Flores, E. G. Judd, Jay Roberts, A. A. Derevschikov, Michal Sumbera, S. Bültmann, S. W. Wissink, Y. Zhang, Nikola Poljak, J. E. Draper, G. Wang, Z. J. Sun, K. Krueger, C. K. Riley, G. J. van Nieuwenhuizen, M. A. Szelezniak, L. C. Bland, J. Alford, W. Guryn, Y. Fisyak, K. Oh, J. Fedorisin, P. Seyboth, J. C. Dunlop, Leszek Adamczyk, R. Derradi de Souza, Q. H. Xu, J. W. Harris, J. Xu, I. Kulakov, M. J. M. Codrington, B. Di Ruzza, Zubayer Ahammed, S. Horvat, R. N. Singaraju, T. Pawlak, W. Zha, M. J. LeVine, D. G. Underwood, J. Cheng, T. J. M. Symons, L. C. De Silva, P. Yepes, R. S. Longacre, A. Davila Leyva, Xuan Zhang, Q. Y. Shou, X. G. Luo, A. H. Tang, G. Igo, J. Novak, B. Sharma, J. Bouchet, K. D. Landry, K. Kauder, I. Bunzarov, Hanna Paulina Zbroszczyk, D. R. Beavis, F. Zhao, W. J. Llope, R. Varma, L-X. Han, S. Y. Noh, J. L. Zhang, B. S. Page, D. P. Kikola, B. Stringfellow, J. G. Cramer, M. R. Girard, E. W. Oldag, T. S. McShane, P. Bhattarai, Y. J. Sun, C. Dilks, S. Kabana, Y. P. Viyogi, and B. Haag
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Heavy ion, Charm (quantum number), 010306 general physics, 01 natural sciences
Published: 2018
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41. Low- pT e+e− Pair Production in Au+Au Collisions at sNN=200 GeV and U+U Collisions at sNN=193 GeV at STAR

Author: Xiaofeng Luo, Arka Chatterjee, Guo-Liang Ma, Li Yi, Xiangming Sun, J. K. Adkins, R. Fatemi, L. He, Jongmin Lee, R. L. Ray, Shaji Kumar, Todd Kinghorn, K. Krueger, R. Ma, A. S. Hirsch, Zongye Zhang, Vitaly Okorokov, Y. Guo, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, A. K. Bhati, D. Keane, P. Kravtsov, Fuwang Shen, A. M. Schmah, I. Kisel, Bernd Surrow, I. G. Bordyuzhin, T. Ljubicic, I. G. Alekseev, N. K. Pruthi, Nikolai Smirnov, J. Bryslawskyj, M. A. Lisa, J. C. Mei, Xuan Zhang, Niseem Magdy, H. Caines, M. Lomnitz, N. Elsey, D. Mayes, L. G. Efimov, J. L. Drachenberg, M. Cherney, Lokesh Kumar, R. Aoyama, Z. Chang, Hua Pei, W. B. Schmidke, G. Eppley, Hanna Paulina Zbroszczyk, Q. H. Xu, Nasim, P. Federic, S. K. Tripathy, J. A. Mazer, Justin Ewigleben, G. Odyniec, C. A. Gagliardi, J. Xu, J. Lidrych, Olga Evdokimov, J. Pluta, J. R. Adams, W. Solyst, H. Z. Huang, G. Agakishiev, D. S. Gunarathne, D. Cebra, S. Vokal, Shize Yang, N. Chankova-Bunzarova, W. Li, A. Taranenko, Zhanwen Zhu, I. K. Yoo, C. Zhong, E. C. Aschenauer, S. Kabana, S. Margetis, Anik Gupta, G. Wang, B.R. Schweid, X. Dong, R. Reed, Giacomo Contin, L. Ma, F. Seck, Madan M. Aggarwal, Fuqiang Wang, Rene Bellwied, F. Videbæk, M. Posik, D. K. Mishra, Zhigang Xiao, T. Huang, Jay Roberts, Z. Ye, J. H. Chen, Jaroslav Adam, H. M. Spinka, Frank Jm Geurts, T. Galatyuk, R. E. Tribble, Nihar Sahoo, C. E. Flores, E. G. Judd, Anju Bhasin, Y. Panebratsev, Saehanseul Oh, Maowu Nie, D. Kalinkin, E. P. Sichtermann, P. Federicova, D. Grosnick, D. A. Morozov, X. Huang, A. Kechechyan, Yunpeng Liu, Derek Anderson, Xiaofeng Zhu, Ying Liang, Sukalyan Chattopadhyay, G. Xie, B. Huang, T. Ullrich, N. G. Minaev, R. Lacey, Pradip Kumar Sahu, L. Zhang, H. W. Ke, P. Sorensen, A. J. Bassill, A. Ogawa, Anthony Robert Timmins, J. H. Thomas, B. Pawlik, A. Vossen, Michal Sumbera, N.N. Ajitanand, S. Heppelmann, Adam Ryszard Kisiel, N. Herrmann, S. Siejka, R. S. Longacre, B. J. Summa, L. P. Zhou, A. Gibson, F-H. Chang, Q. Yang, T. Niida, Yu-Gang Ma, Catherine Tomkiel, H. J. Crawford, P. V. Shanmuganathan, C. Zhou, K. Meehan, C-Q. Li, J. C. Dunlop, L. Wen, G. S. Averichev, S. Esumi, S. H. Zhang, N. Kulathunga, N. Xu, P. Filip, B. Tu, S. W. Wissink, D. Mallick, J. Engelage, Peter Q. Liu, J. Kvapil, Y. Zhang, A. Lebedev, G. D. Westfall, J. Porter, Christina Markert, D. Smirnov, O. Rusnakova, S. Ramachandran, H. S. Matis, O. Eyser, M. Tokarev, Yang Yang, J. M. Nelson, S. K. Radhakrishnan, G. Nigmatkulov, W. J. Llope, L. Fulek, G. Igo, Y. Wang, F. G. Atetalla, L. K. Kosarzewski, Y. Fisyak, D. L. Olvitt, Nilay Shah, Zubayer Ahammed, W. W. Jacobs, O. D. Tsai, J. Lauret, Jaroslav Bielcik, L. Didenko, I. Chakaberia, L. Krauth, K. Oh, Alexander Jentsch, Zebo Tang, James Brandenburg, K. Yip, R. Lednicky, L. Kochenda, T. Tarnowsky, D. Arkhipkin, A. Hamed, J. Butterworth, J. M. Landgraf, Lukas Holub, Bedangadas Mohanty, P. Szymanski, K. Kauder, A. Attri, K. N. Barish, P. Seyboth, M. Strikhanov, Y. F. Xu, P. Huo, Q. Y. Shou, W. Q. Shen, Xiang Sun, Chong Kim, Jan Vanek, Leszek Adamczyk, C. Perkins, R. Pak, O. V. Rogachevskiy, J. Rusnak, A. F. Kraishan, S. R. Klein, Jorn Henning Putschke, A. Quintero, A. V. Brandin, P. Chaloupka, T. D. S. Stanislaus, Ting Lin, Z. J. Xu, J. Sandweiss, H. Liu, L. Ruan, M. Zyzak, S. Trentalange, Vipul Bairathi, David Stewart, H. G. Ritter, H. H. Wieman, R. Witt, D. Tlusty, T. Todoroki, S. Mioduszewski, Sevil Salur, Arabinda Behera, David Brown, M. Calderon De La Barca Sanchez, A. I. Hamad, A. A. Derevschikov, Sedigheh Jowzaee, Prithwish Tribedy, B. K. Srivastava, Rafal Sikora, F. Liu, Shengli Huang, J. W. Harris, Miroslav Simko, Mariusz Przybycien, A. H. Tang, I. Bunzarov, O. Matonoha, J. C. Webb, L. C. Bland, R. D. Majka, R. Seto, J. Schambach, Chi Yang, W. Christie, D. N. Svirida, Andrey Vasiliev, X.G. Li, Janet Elizabeth Seger, I. M. Deppner, T. J. Humanic, B. S. Page, D. P. Kikola, B. Stringfellow, Isaac Upsal, Jana Bielcikova, Tetsuro Sugiura, J. L. Romero, I. Vassiliev, Lukas Kramarik, Y. J. Sun, C. Dilks, E. Finch, Xuedong Bai, D. Kapukchyan, D. G. Underwood, T. Nonaka, Wei Xie, A. Aparin, J. D. Negrete, N. Schmitz, J. Cheng, E. Shahaliev, Roli Esha, Daniel Nemes, Jie Zhao, S. Horvat, J. Y. Zhang, A. Lipiec, W. Zha, N. Yu, Kejun Kang, L. V. Nogach, A. Harlenderova, Sumit R. Das, W. Guryn, J. Fedorisin, M. M. Mondal, S. B. Nurushev, J. M. Campbell, Joseph Kwasizur, M. Shao, G. Van Buren, T. G. Dedovich, S. S. Shi, S. Fazio, Xuliang Chen, Siwei Luo, Isaac Mooney, J. Jia, Muhammad Usman Ashraf, Sergey Voloshin, K. Jiang, Yanjun Wu, and M. Sergeeva
Subjects: Physics, Spectral representation, Pair production, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, General Physics and Astronomy, Star (graph theory), 010306 general physics, 01 natural sciences, Mathematical physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon de la Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, F-H; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T | Abstract: We report first measurements of e^{+}e^{-} pair production in the mass region 0.4
Published: 2018
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42. Low-p_{T} e^{+}e^{-} Pair Production in Au+Au Collisions at sqrt[s_{NN}]=200 GeV and U+U Collisions at sqrt[s_{NN}]=193 GeV at STAR

Author: J, Adam, L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, N N, Ajitanand, I, Alekseev, D M, Anderson, R, Aoyama, A, Aparin, D, Arkhipkin, E C, Aschenauer, M U, Ashraf, F, Atetalla, A, Attri, G S, Averichev, X, Bai, V, Bairathi, K, Barish, A J, Bassill, A, Behera, R, Bellwied, A, Bhasin, A K, Bhati, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J D, Brandenburg, A V, Brandin, D, Brown, J, Bryslawskyj, I, Bunzarov, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, J M, Campbell, D, Cebra, I, Chakaberia, P, Chaloupka, F-H, Chang, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, S, Chattopadhyay, J H, Chen, X, Chen, J, Cheng, M, Cherney, W, Christie, G, Contin, H J, Crawford, S, Das, T G, Dedovich, I M, Deppner, A A, Derevschikov, L, Didenko, C, Dilks, X, Dong, J L, Drachenberg, J C, Dunlop, L G, Efimov, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, P, Federicova, J, Fedorisin, P, Filip, E, Finch, Y, Fisyak, C E, Flores, L, Fulek, C A, Gagliardi, T, Galatyuk, F, Geurts, A, Gibson, D, Grosnick, D S, Gunarathne, Y, Guo, A, Gupta, W, Guryn, A I, Hamad, A, Hamed, A, Harlenderova, J W, Harris, L, He, S, Heppelmann, N, Herrmann, A, Hirsch, L, Holub, S, Horvat, X, Huang, B, Huang, S L, Huang, H Z, Huang, T, Huang, T J, Humanic, P, Huo, G, Igo, W W, Jacobs, A, Jentsch, J, Jia, K, Jiang, S, Jowzaee, E G, Judd, S, Kabana, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, D P, Kikoła, C, Kim, T A, Kinghorn, I, Kisel, A, Kisiel, S R, Klein, L, Kochenda, L K, Kosarzewski, A F, Kraishan, L, Kramarik, L, Krauth, P, Kravtsov, K, Krueger, N, Kulathunga, S, Kumar, L, Kumar, J, Kvapil, J H, Kwasizur, R, Lacey, J M, Landgraf, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, X, Li, C, Li, W, Li, Y, Li, Y, Liang, J, Lidrych, T, Lin, A, Lipiec, M A, Lisa, F, Liu, P, Liu, H, Liu, Y, Liu, T, Ljubicic, W J, Llope, M, Lomnitz, R S, Longacre, X, Luo, S, Luo, G L, Ma, Y G, Ma, L, Ma, R, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, O, Matonoha, D, Mayes, J A, Mazer, K, Meehan, J C, Mei, N G, Minaev, S, Mioduszewski, D, Mishra, B, Mohanty, M M, Mondal, I, Mooney, D A, Morozov, Md, Nasim, J D, Negrete, J M, Nelson, D B, Nemes, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, S B, Nurushev, G, Odyniec, A, Ogawa, K, Oh, S, Oh, V A, Okorokov, D, Olvitt, B S, Page, R, Pak, Y, Panebratsev, B, Pawlik, H, Pei, C, Perkins, J, Pluta, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, A, Quintero, S K, Radhakrishnan, S, Ramachandran, R L, Ray, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, L, Ruan, J, Rusnak, O, Rusnakova, N R, Sahoo, P K, Sahu, S, Salur, J, Sandweiss, J, Schambach, A M, Schmah, W B, Schmidke, N, Schmitz, B R, Schweid, F, Seck, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, W Q, Shen, F, Shen, S S, Shi, Q Y, Shou, E P, Sichtermann, S, Siejka, R, Sikora, M, Simko, S, Singha, N, Smirnov, D, Smirnov, W, Solyst, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, D J, Stewart, M, Strikhanov, B, Stringfellow, A A P, Suaide, T, Sugiura, M, Sumbera, B, Summa, Y, Sun, X, Sun, X M, Sun, B, Surrow, D N, Svirida, P, Szymanski, Z, Tang, A H, Tang, A, Taranenko, T, Tarnowsky, J H, Thomas, A R, Timmins, D, Tlusty, T, Todoroki, M, Tokarev, C A, Tomkiel, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, O D, Tsai, B, Tu, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, J, Vanek, A N, Vasiliev, I, Vassiliev, F, Videbæk, S, Vokal, S A, Voloshin, A, Vossen, G, Wang, Y, Wang, F, Wang, J C, Webb, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, Q H, Xu, Z, Xu, J, Xu, Y F, Xu, N, Xu, S, Yang, C, Yang, Q, Yang, Y, Yang, Z, Ye, L, Yi, K, Yip, I-K, Yoo, N, Yu, H, Zbroszczyk, W, Zha, Z, Zhang, L, Zhang, Y, Zhang, X P, Zhang, J, Zhang, S, Zhang, J, Zhao, C, Zhong, C, Zhou, L, Zhou, Z, Zhu, X, Zhu, and M, Zyzak
Abstract: We report first measurements of e^{+}e^{-} pair production in the mass region 0.4M_{ee}2.6 GeV/c^{2} at low transverse momentum (p_{T}0.15 GeV/c) in noncentral Au+Au collisions at sqrt[s_{NN}]=200 GeV and U+U collisions at sqrt[s_{NN}]=193 GeV. Significant enhancement factors, expressed as ratios of data over known hadronic contributions, are observed in the 40%-80% centrality of these collisions. The excess yields peak distinctly at low p_{T} with a width (sqrt[⟨p_{T}^{2}⟩]) between 40 and 60 MeV/c. The absolute cross section of the excess depends weakly on centrality, while those from a theoretical model calculation incorporating an in-medium broadened ρ spectral function and radiation from a quark gluon plasma or hadronic cocktail contributions increase dramatically with an increasing number of participant nucleons. Model calculations of photon-photon interactions generated by the initial projectile and target nuclei describe the observed excess yields but fail to reproduce the p_{T}^{2} distributions.
Published: 2018

43. Longitudinal double-spin asymmetries for π0s in the forward direction for 510 GeV polarized pp collisions

Author: M. Shao, G. Van Buren, S. S. Shi, J. H. Thomas, T. J. Humanic, Roli Esha, L. P. Zhou, Daniel Nemes, Jie Zhao, S. Horvat, J. W. Harris, F-H. Chang, Q. Yang, M. Simko, G. Eppley, J. Bryslawskyj, J. C. Dunlop, L. Wen, Jongmin Lee, R. L. Ray, B. S. Page, R. Ma, T. Ljubicic, D. P. Kikola, Niseem Magdy, H. Caines, M. Lomnitz, Zhigang Xiao, T. Huang, A. H. Tang, Zubayer Ahammed, A. Lipiec, David Brown, W. Zha, I. Bunzarov, O. Matonoha, B. Stringfellow, Muhammad Usman Ashraf, G. S. Averichev, Yunpeng Liu, Derek Anderson, J. Pluta, F. Liu, Mariusz Przybycien, Sergey Voloshin, N. Chankova-Bunzarova, W. Li, N. G. Minaev, S. Heppelmann, Jaroslav Bielcik, Jorn Henning Putschke, Y. Yang, B. J. Summa, L. Ma, A. V. Brandin, Q. Y. Shou, Rene Bellwied, K. Kauder, K. Jiang, F. G. Atetalla, Q. H. Xu, C-Q. Li, J. L. Romero, Yanjun Wu, Z. Ye, J. Xu, Jaroslav Adam, Maowu Nie, R. E. Tribble, N. Kulathunga, N. Xu, P. Filip, O. D. Tsai, Vipul Bairathi, Giacomo Contin, R. Pak, J. L. Drachenberg, D. G. Underwood, Olga Evdokimov, R. D. Majka, Lukas Kramarik, James Brandenburg, G. D. Westfall, M. Sergeeva, O. V. Rogachevskiy, X. Huang, A. Kechechyan, S. B. Nurushev, Christina Markert, K. N. Barish, J. Schambach, I. Vassiliev, A. Quintero, E. Finch, S. Fazio, Xuliang Chen, Nihar Sahoo, Xuedong Bai, Anik Gupta, S. Ramachandran, D. L. Olvitt, Siwei Luo, Arka Chatterjee, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Pradip Kumar Sahu, Y. Wang, Y. Fisyak, W. Christie, O. Eyser, Xiangming Sun, Isaac Upsal, Jay Roberts, Jiangyong Jia, Benjamin Schweid, D. Arkhipkin, A. Hamed, D. Smirnov, O. Rusnakova, H. S. Matis, J. Cheng, P. Federicova, Frank Jm Geurts, Isaac Mooney, Andrey Vasiliev, T. Galatyuk, K. Oh, B. Huang, Lukas Holub, N. N. Ajitanand, Bedangadas Mohanty, Anthony Robert Timmins, W. Q. Shen, N. K. Pruthi, J. Kvapil, H. W. Ke, H. Z. Huang, S. Vokal, Tetsuro Sugiura, Y. J. Sun, R. S. Longacre, Adam Ryszard Kisiel, X.G. Li, L. K. Kosarzewski, W. W. Jacobs, J. Rusnak, S. K. Radhakrishnan, A. F. Kraishan, Vitaly Okorokov, Nilay Shah, C. Zhou, A. A. Derevschikov, C. Dilks, Xiang Sun, Janet Elizabeth Seger, L. Fulek, P. V. Shanmuganathan, P. Szymanski, H. J. Crawford, K. Meehan, L. Ruan, Bernd Surrow, D. Kapukchyan, D. Mallick, I. M. Deppner, Anju Bhasin, M. Tokarev, K. Yip, Peng Huo, G. Xie, Y. Li, S. Singha, A. Harlenderova, J. Lauret, S. H. Zhang, A. J. Bassill, Maksym Zyzak, R. Lednicky, B. Pawlik, T. Todoroki, Alexandre Alarcon Do Passo Suaide, J. K. Adkins, A. Gibson, H. Liu, N. Elsey, T. Niida, G. Igo, J. H. Chen, A. Lebedev, D. Mayes, R. Fatemi, L. He, T. Nonaka, G. Wang, Chong Kim, Shaji Kumar, Todd Kinghorn, David Stewart, K. Krueger, L. Krauth, W. Guryn, R. Lacey, J. C. Webb, T. D. S. Stanislaus, L. Kochenda, T. Tarnowsky, H. H. Wieman, Xiaofeng Luo, Wei Xie, Zebo Tang, D. A. Morozov, Z. Chang, J. Butterworth, W. B. Schmidke, H. G. Ritter, A. Aparin, R. Seto, J. D. Negrete, Guo-Liang Ma, Y. F. Xu, Sevil Salur, C. A. Gagliardi, J. Fedorisin, N. Schmitz, R. Witt, E. Shahaliev, M. Cherney, Li Yi, Rafal Sikora, Lokesh Kumar, Hua Pei, S. K. Tripathy, C. Perkins, Jana Bielcikova, M. M. Mondal, N. Herrmann, J. M. Campbell, Madan M. Aggarwal, P. Sorensen, S. Mioduszewski, Michal Sumbera, Fuqiang Wang, L. C. Bland, D. K. Mishra, P. Chaloupka, Ting Lin, L. Didenko, I. Chakaberia, Z. J. Xu, S. Siejka, Xiaofeng Zhu, A. S. Hirsch, Catherine Tomkiel, Ying Liang, S. Trentalange, D. Kalinkin, T. G. Dedovich, Prithwish Tribedy, B. K. Srivastava, Chi Yang, P. Seyboth, D. N. Svirida, P. Kravtsov, Fuwang Shen, A. Ogawa, S. W. Wissink, Y. Zhang, A. Vossen, Jan Vanek, Leszek Adamczyk, A. M. Schmah, Zongye Zhang, S. Esumi, Y. Guo, I. G. Bordyuzhin, P. Federic, J. Y. Zhang, A. K. Bhati, D. Keane, N. Yu, Kejun Kang, L. V. Nogach, Sumit R. Das, J. A. Mazer, D. Tlusty, I. K. Yoo, Nikolai Smirnov, C. E. Flores, E. G. Judd, L. G. Efimov, F. Videbæk, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Sukalyan Chattopadhyay, L. Zhang, B. Tu, Nasim, J. M. Nelson, W. J. Llope, Alexander Jentsch, A. Attri, P. Liu, J. Engelage, G. Nigmatkulov, J. M. Landgraf, M. Strikhanov, J. Sandweiss, Yu-Gang Ma, Xuan Zhang, R. Aoyama, Hanna Paulina Zbroszczyk, R. Reed, E. P. Sichtermann, T. Ullrich, C. Zhong, E. C. Aschenauer, S. Margetis, X. Dong, J. Lidrych, Shize Yang, G. Agakishiev, D. S. Gunarathne, F. Seck, M. Posik, D. Cebra, Arabinda Behera, A. Taranenko, H. M. Spinka, Zhanwen Zhu, S. Kabana, Justin Ewigleben, G. Odyniec, J. Porter, Ivan Kisel, S. L. Huang, J. R. Adams, W. Solyst, I. G. Alekseev, M. A. Lisa, J. C. Mei, and Joseph Kwasizur
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, Transverse momentum, 010306 general physics, 01 natural sciences, Spin-½, Mathematical physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T | Abstract: The STAR Collaboration reports measurements of the longitudinal double-spin asymmetry, ALL, for neutral pions produced at forward directions in polarized proton-proton collisions, at a center-of-mass energy of 510 GeV. Results are given for transverse momenta in the range 2
Published: 2018
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44. Longitudinal double-spin asymmetries for dijet production at intermediate pseudorapidity in polarized pp collisions at s=200 GeV

Author: Jorn Henning Putschke, A. V. Brandin, G. Wang, Xiangming Sun, Vipul Bairathi, J. Porter, N. Herrmann, Ivan Kisel, I. Vassiliev, Anik Gupta, Frank Jm Geurts, S. Siejka, T. Galatyuk, C. Zhou, K. Meehan, S. H. Zhang, Benjamin Schweid, N. K. Pruthi, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Xiaofeng Luo, Giacomo Contin, Siwei Luo, D. Arkhipkin, A. Hamed, E. P. Sichtermann, Zebo Tang, Guo-Liang Ma, Li Yi, K. Yip, I. K. Yoo, C. Perkins, S. L. Huang, P. Seyboth, N. N. Ajitanand, Nihar Sahoo, G. Eppley, Jan Vanek, A. S. Hirsch, P. Kravtsov, Fuwang Shen, A. M. Schmah, Leszek Adamczyk, J. L. Drachenberg, R. S. Longacre, S. Fazio, J. Pluta, N. Chankova-Bunzarova, W. Li, Xuliang Chen, Jiangyong Jia, P. Federic, L. Ma, Rene Bellwied, P. V. Shanmuganathan, M. Tokarev, D. Mallick, Olga Evdokimov, Roli Esha, Isaac Mooney, Daniel Nemes, Jie Zhao, S. Horvat, S. Heppelmann, B. J. Summa, C. E. Flores, E. G. Judd, J. L. Romero, Lukas Kramarik, E. Finch, Anthony Robert Timmins, Adam Ryszard Kisiel, R. E. Tribble, Xuedong Bai, T. J. Humanic, Shize Yang, F. Seck, I. G. Alekseev, Arka Chatterjee, F. Videbæk, D. Tlusty, G. Igo, T. Ullrich, T. D. S. Stanislaus, Xiaofeng Zhu, Ying Liang, K. Kauder, H. J. Crawford, M. A. Lisa, J. C. Mei, Sukalyan Chattopadhyay, J. K. Adkins, H. H. Wieman, L. Krauth, M. Simko, M. Posik, Arabinda Behera, Jay Roberts, L. Zhang, Y. Panebratsev, Yu-Gang Ma, Lukas Holub, Bedangadas Mohanty, R. Fatemi, L. He, T. Nonaka, H. M. Spinka, Shaji Kumar, Todd Kinghorn, K. Krueger, J. Butterworth, A. Lipiec, A. Ogawa, Saehanseul Oh, Muhammad Usman Ashraf, J. Kvapil, W. Zha, D. Grosnick, Nilay Shah, B. S. Page, Xuan Zhang, S. Ramachandran, P. Chaloupka, Wei Xie, Y. F. Xu, H. W. Ke, J. M. Campbell, Jana Bielcikova, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, Ting Lin, Sergey Voloshin, Z. J. Xu, D. P. Kikola, Y. Wang, Y. Fisyak, O. Eyser, R. Aoyama, B. Stringfellow, Q. H. Xu, Z. Ye, J. Xu, J. H. Thomas, A. Aparin, S. Trentalange, Jaroslav Adam, J. W. Harris, K. Oh, Isaac Upsal, Hanna Paulina Zbroszczyk, D. G. Underwood, L. P. Zhou, J. Lidrych, D. L. Olvitt, Maowu Nie, T. G. Dedovich, K. Jiang, X. Huang, A. Kechechyan, P. Szymanski, J. D. Negrete, M. Cherney, F-H. Chang, Q. Yang, Lokesh Kumar, Hua Pei, S. K. Tripathy, Yanjun Wu, B. Pawlik, Pradip Kumar Sahu, P. Federicova, J. Bryslawskyj, C-Q. Li, H. Z. Huang, S. Vokal, J. Cheng, R. Witt, B. Huang, A. Gibson, Tetsuro Sugiura, R. Reed, G. Agakishiev, D. S. Gunarathne, N. Schmitz, E. Shahaliev, Y. J. Sun, B. Tu, Jongmin Lee, G. S. Averichev, A. H. Tang, N. Kulathunga, D. Cebra, M. Sergeeva, Michal Sumbera, C. Dilks, P. Sorensen, S. Mioduszewski, Peng Huo, A. Harlenderova, A. Taranenko, Zhanwen Zhu, J. M. Nelson, W. J. Llope, Catherine Tomkiel, J. H. Chen, N. Xu, P. Filip, I. Bunzarov, W. Guryn, R. L. Ray, V. A. Okorokov, R. Lacey, Prithwish Tribedy, B. K. Srivastava, R. Ma, S. W. Wissink, O. Matonoha, S. Kabana, Justin Ewigleben, G. Odyniec, Christina Markert, Alexander Jentsch, J. Y. Zhang, Y. Zhang, J. Fedorisin, M. M. Mondal, D. A. Morozov, A. Attri, N. Yu, Kejun Kang, L. V. Nogach, J. C. Dunlop, L. Wen, P. Liu, Sumit R. Das, Zubayer Ahammed, S. B. Nurushev, A. K. Bhati, D. Keane, Joseph Kwasizur, Nikolai Smirnov, L. G. Efimov, J. R. Adams, M. Shao, G. Van Buren, F. G. Atetalla, D. Smirnov, O. D. Tsai, O. Rusnakova, W. Solyst, S. S. Shi, T. Ljubicic, Q. Y. Shou, R. Pak, G. D. Westfall, W. Q. Shen, Xiang Sun, H. Liu, David Stewart, H. S. Matis, Sevil Salur, Niseem Magdy, H. Caines, D. Kapukchyan, M. Lomnitz, L. Didenko, I. Chakaberia, C. Zhong, E. C. Aschenauer, L. K. Kosarzewski, S. Margetis, James Brandenburg, X. Dong, W. W. Jacobs, K. N. Barish, J. Lauret, R. Lednicky, L. Kochenda, T. Tarnowsky, A. A. Derevschikov, Zhigang Xiao, T. Huang, Zongye Zhang, Y. Guo, Maksym Zyzak, I. G. Bordyuzhin, J. C. Webb, R. Seto, Yunpeng Liu, Derek Anderson, N. G. Minaev, J. A. Mazer, S. K. Radhakrishnan, L. Fulek, L. C. Bland, Chi Yang, J. Rusnak, A. F. Kraishan, L. Ruan, D. N. Svirida, Chong Kim, T. Todoroki, H. G. Ritter, Rafal Sikora, Jaroslav Bielcik, O. V. Rogachevskiy, J. Engelage, A. Quintero, G. Nigmatkulov, J. M. Landgraf, M. Strikhanov, J. Sandweiss, Nasim, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, D. Kalinkin, A. Vossen, S. Esumi, W. Christie, Bernd Surrow, Andrey Vasiliev, N. Elsey, D. Mayes, Z. Chang, X.G. Li, W. B. Schmidke, Janet Elizabeth Seger, C. A. Gagliardi, I. M. Deppner, David Brown, F. Liu, Mariusz Przybycien, Y. Yang, R. D. Majka, J. Schambach, Anju Bhasin, G. Xie, A. J. Bassill, T. Niida, and A. Lebedev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Pseudorapidity, 0103 physical sciences, Chatterjee, 010306 general physics, 01 natural sciences
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T | Abstract: We present the first measurements of the longitudinal double-spin asymmetry ALL for dijets with at least one jet reconstructed within the pseudorapidity range 0.8lηl1.8. The dijets were measured in polarized pp collisions at a center-of-mass energy s=200 GeV. Values for ALL are determined for several distinct event topologies, defined by the jet pseudorapidities, and span a range of parton momentum fraction x down to x∼0.01. The measured asymmetries are found to be consistent with the predictions of global analyses that incorporate the results of previous RHIC measurements. They will provide new constraints on Δg(x) in this poorly constrained region when included in future global analyses.
Published: 2018
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45. Azimuthal anisotropy in Cu+Au collisions at sNN=200 GeV

Author: D. L. Olvitt, Isaac Upsal, James Brandenburg, J. Bryslawskyj, T. Nonaka, K. N. Barish, Subhasis Chattopadhyay, Joseph Kwasizur, T. Tarnowsky, Giacomo Contin, A. Aparin, Xianglei Zhu, Rongrong Ma, Alexander Vasiliev, Lanny Ray, Tetsuro Sugiura, P. V. Shanmuganathan, A. A. Derevschikov, Nihar Sahoo, C. Dilks, D. Mallick, Y. Pandit, Zillay Khan, X. C. Chen, Feng Liu, G. Igo, H. Liu, S. Kabana, F. Videbæk, E. Shahaliev, I. G. Bordyuzhin, Yuanjing Li, L. Krauth, M. Tokarev, Yang Yang, David Stewart, Jana Bielcikova, J. Engelage, Anthony Robert Timmins, Adam Ryszard Kisiel, Qinghua Xu, Maksym Zyzak, R. Seto, L. Zhang, Keith Landry, Hans Georg Ritter, P. Seyboth, Sevil Salur, G. Nigmatkulov, K. Kauder, A. Taranenko, L. Didenko, I. Chakaberia, Bedangadas Mohanty, Yang Wu, Anik Gupta, A. I. Hamad, A. Harlenderova, Jiro Fujita, Sedigheh Jowzaee, R. Fatemi, Xinjie Huang, Paul Sorensen, Gerrit Jan van Nieuwenhuizen, Yifei Zhang, Zachariah Miller, Abdel Nasser Tawfik, Chris Perkins, J. M. Landgraf, Ming Shao, Frank Jm Geurts, Prithwish Tribedy, B. K. Srivastava, Dmitry Morozov, Dave Underwood, Long Ma, Zhongbin Xu, J. L. Romero, M. Lomnitz, M. Strikhanov, Nu Xu, Jing-Han Chen, H. H. Wieman, Christina Markert, O. Rusnakova, Janet Elizabeth Seger, Declan Keane, Wei Li, Niseem Magdy Abdelwahab Abdelrahman, I. M. Deppner, M. Cherney, Rosi Reed, Lokesh Kumar, J. L. Drachenberg, Michal Sumbera, H. S. Matis, D. P. Kikola, B. Stringfellow, J. Sandweiss, P. Federic, Olga Evdokimov, Barbara Antonina Trzeciak, L. K. Kosarzewski, Kun Jiang, S. K. Tripathy, Jay Roberts, Yanfang Liu, Hank Crawford, Prabhat Bhattarai, J. Fedorisin, B. Pawlik, Jianping Cheng, E. Finch, Anju Bhasin, Daniel Brown, A. K. Bhati, Nasim, Xiaofeng Luo, Guo-Liang Ma, K. Meehan, Jindrich Lidrych, Zhenyu Ye, T. Niida, Nikolai Smirnov, Xiaoping Zhang, A. Lebedev, L. Adamczyk, Zhigang Xiao, T. Huang, Derek Anderson, K. Krueger, Hal Spinka, Grant Webb, Xu Sun, Alexandre Alarcon Do Passo Suaide, J. Lauret, Spiros Margetis, Martin Kocmanek, S. Stanislaus, L. Kochenda, D. Tlusty, Zhaozhong Shi, J. W. Harris, Gary Westfall, Li Yi, A. S. Hirsch, P. Kravtsov, L. G. Efimov, A. M. Schmah, Arghya Chatterjee, N. G. Minaev, R. Witt, Yi Guo, Manuel Calderon De La Barca Sanchez, Gang Wang, J. C. Dunlop, L. Wen, Kevin Adkins, John Campbell, Song Zhang, Zebo Tang, T. K. Nayak, S. B. Nurushev, S. Fazio, P. Federicova, Zubayer Ahammed, Norbert Schmitz, Jeong-Hun Lee, Robert E. Tribble, Zhao Feng, N. Kulathunga, S. Das, P. Filip, Norbert Herrmann, Wlodek Guryn, Y. Panebratsev, D. Grosnick, I. K. Yoo, Miroslav Simko, Ron Longacre, I. Bunzarov, Mariusz Przybycien, Cheng Li, D. Kapukchyan, J. Putschke, Roli Esha, R. Aoyama, Daniel Nemes, Jie Zhao, Z. Ye, A. Ogawa, Shuai Yang, Gene Van Buren, Y. Fisyak, Samuel Heppelmann, B. Tu, Q. Y. Shou, Yi-Fei Xu, Maowu Nie, M. M. Mondal, K. Oh, C. E. Flores, E. G. Judd, J. Schambach, Bill Christie, A. Kechechyan, W. Zha, Xiaozhi Bai, J. Porter, Pradip Kumar Sahu, Wen-Qing Shen, R. Pak, Jiangyong Jia, Xiaolong Chen, Arabinda Behera, J. Rusnak, A. F. Kraishan, L. Ruan, T. Todoroki, Long Zhou, Chong Kim, H. Z. Huang, Rafal Sikora, Jonathan Bouchet, Martin Girard, Jochen Mathias Thaeder, Mustafa M. Mustafa, B. Schmidke, H. W. Ke, L. Fulek, L. C. Bland, Katarzyna Poniatowska, Chi Yang, D. N. Svirida, T. G. Dedovich, H. Pei, N. Yu, E. P. Sichtermann, Kejun Kang, L. V. Nogach, Chensheng Zhou, Peifeng Liu, T. Ullrich, Yi Wang, Liang He, Neha Shah, C. Zhong, E. C. Aschenauer, X. Dong, T. Ljubicic, H. Caines, A. Quintero, Nuggehalli Ajitanand, Dmitri Smirnov, P. Chaloupka, Ting Lin, Muhammad Usman Ashraf, A. Gibson, O. D. Tsai, V. A. Okorokov, A. H. Tang, Benjamin Schweid, T. J. Humanic, D. Arkhipkin, A. Hamed, M. Sergeeva, Siwei Luo, Joseph Adams, Shenghui Zhang, William Jacobs, Jian Deng, G. Eppley, G. Agakishiev, D. S. Gunarathne, S. Horvat, J. Pluta, D. Cebra, S. Trentalange, Brian Page, Zhanwen Zhu, N. Chankova-Bunzarova, A. V. Brandin, Subhash Singha, Vipul Bairathi, Justin Ewigleben, G. Odyniec, Rene Bellwied, Qian Yang, Richard Daniel Majka, K. Yip, John Nelson, Xiangming Sun, B. Huang, J. M. Butterworth, J. H. Thomas, Arthur M. Poskanzer, Miroslav Saur, J. C. Webb, Jaroslav Bielcik, Jordan Roth, N. K. Pruthi, Jie Zhang, J. Kvapil, O. V. Rogachevskiy, W. Solyst, Sanshiro Mizuno, Y. K. Sun, Bernd Surrow, N. Elsey, D. Mayes, I. G. Alekseev, C. A. Gagliardi, M. A. Lisa, J. C. Mei, G. S. Averichev, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, A. Vossen, Ivan Kisel, Thorsten Sven Kollegger, D. Kalinkin, Z. Chang, Yaping Wang, Saskia Mioduszewski, Shusu Shi, S. Heppelmann, Xin Li, B. J. Summa, M. Posik, Z. Y. Zhang, Michael Skoby, J. E. Draper, S. Ramachandran, O. Eyser, Sergei A. Voloshin, S. Vokal, Wei Xie, Matthew Rehbein, Roy A. Lacey, W. J. Llope, Alexander Jentsch, A. Attri, P. Huo, Guannan Xie, R. Lednicky, Hanna Paulina Zbroszczyk, Ji Xu, Jingbo Zhang, S. W. Wissink, ShinIchi Esumi, and Yu-Gang Ma
Subjects: Physics, Range (particle radiation), 010308 nuclear & particles physics, media_common.quotation_subject, 01 natural sciences, Asymmetry, Charged particle, Pseudorapidity, Electric field, 0103 physical sciences, Rapidity, Center of mass, Atomic physics, Nuclear Experiment, 010306 general physics, Anisotropy, media_common
Abstract: The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at sNN=200 GeV for harmonics n=1–4 in the pseudorapidity range |η
Published: 2018
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46. Global polarization of Λ hyperons in Au + Au collisions at sNN=200 GeV

Author: Chensheng Zhou, T. Ullrich, Yi Wang, T. Ljubicic, H. Caines, Neha Shah, C. Zhong, X. Dong, Jeong-Hun Lee, Miroslav Simko, Ron Longacre, A. Harlenderova, Long Ma, Justin Ewigleben, G. Odyniec, Shuai Yang, Chris Perkins, Yanfang Liu, J. Schambach, J. Fedorisin, Anju Bhasin, A. J. Bassill, Xiaofeng Luo, Guo-Liang Ma, J. C. Webb, Roli Esha, Jaroslav Bielcik, Li Yi, T. Niida, W. Solyst, Daniel Nemes, Jie Zhao, H. W. Ke, L. Fulek, Jie Zhang, A. S. Hirsch, A. Lebedev, L. C. Bland, Alexandre Alarcon Do Passo Suaide, P. Kravtsov, A. M. Schmah, A. Lipiec, O. V. Rogachevskiy, I. G. Alekseev, M. A. Lisa, J. C. Mei, J. Porter, Arghya Chatterjee, Feng-Han Chang, D. N. Svirida, Ivan Kisel, D. L. Olvitt, Gary Westfall, J. Kvapil, G. Agakishiev, D. S. Gunarathne, Long Zhou, Subhasis Chattopadhyay, S. Horvat, D. Cebra, S. Trentalange, Zhanwen Zhu, Chong Kim, Y. K. Sun, Bernd Surrow, Brian Page, S. Siejka, Nu Xu, H. Z. Huang, A. V. Brandin, N. Elsey, D. Mayes, Janet Elizabeth Seger, Daniel Brown, Hal Spinka, I. M. Deppner, F. Videbæk, Norbert Herrmann, Rafal Sikora, Yuanjing Li, J. Rusnak, Zhongbin Xu, A. F. Kraishan, Vipul Bairathi, L. Zhang, L. Ruan, J. L. Romero, C. A. Gagliardi, J. Putschke, Yifei Zhang, Qian Yang, Richard Daniel Majka, Lukas Kramarik, T. Todoroki, Jana Bielcikova, Madan M. Aggarwal, Sooraj Krishnan Radhakrishnan, Fuqiang Wang, E. Finch, P. Federicova, J. H. Thomas, A. Ogawa, M. Tokarev, Yang Yang, K. Yip, D. K. Mishra, N. Kulathunga, J. L. Drachenberg, Yang Wu, Anik Gupta, P. Szymanski, P. Filip, H. H. Wieman, I. G. Bordyuzhin, Y. Fisyak, Olga Evdokimov, K. Oh, Muhammad Usman Ashraf, Xiangming Sun, D. Mallick, Frank Jm Geurts, B. Huang, A. Vossen, D. Kalinkin, T. Galatyuk, Gene Van Buren, O. D. Tsai, Z. Ye, Manuel Calderon De La Barca Sanchez, L. Didenko, I. Chakaberia, Cheng Li, D. Kapukchyan, G. Igo, Maowu Nie, L. Krauth, S. Heppelmann, A. Kechechyan, James Brandenburg, K. N. Barish, Xin Li, B. J. Summa, Fuwang Shen, Gang Wang, G. S. Averichev, Christina Markert, Bill Christie, K. Kauder, A. Taranenko, O. Rusnakova, P. Seyboth, Xiaozhi Bai, Jaroslav Adam, K. Meehan, S. B. Nurushev, J. Bryslawskyj, Z. Y. Zhang, T. Tarnowsky, H. S. Matis, T. Nonaka, Jindrich Lidrych, Jiangyong Jia, L. K. Kosarzewski, Xiaolong Chen, J. Lauret, Xianglei Zhu, Arabinda Behera, Kun Jiang, Jay Roberts, Song Zhang, Yaping Wang, A. A. Derevschikov, A. I. Hamad, Saskia Mioduszewski, Shusu Shi, Zebo Tang, Sedigheh Jowzaee, S. Stanislaus, L. Kochenda, Jan Vanek, Joseph Kwasizur, Dave Underwood, N. K. Pruthi, Qinghua Xu, F. Seck, Maksym Zyzak, E. Shahaliev, Declan Keane, K. Krueger, P. Federic, M. Sergeeva, I. Vassiliev, M. Posik, Jianping Cheng, G. Eppley, O. Eyser, Sergei A. Voloshin, J. W. Harris, R. Seto, Siwei Luo, J. Pluta, W. J. Llope, Wei Li, R. Witt, N. Chankova-Bunzarova, I. Bunzarov, O. Matonoha, Subhash Singha, Joseph Adams, Alexander Jentsch, Niseem Magdy Abdelwahab Abdelrahman, Zhigang Xiao, T. Huang, J. C. Dunlop, L. Wen, Rene Bellwied, S. Vokal, Yue Liang, Wei Xie, A. Attri, Wlodek Guryn, Y. Panebratsev, Isaac Mooney, Shenghui Zhang, Zubayer Ahammed, Norbert Schmitz, Derek Anderson, P. Huo, Saehanseul Oh, D. Grosnick, William Jacobs, N. G. Minaev, John Campbell, S. W. Wissink, Q. Y. Shou, Yi-Fei Xu, Sumit Kumar, R. Pak, Feng Liu, Roy A. Lacey, Hans Georg Ritter, R. Aoyama, Mariusz Przybycien, ShinIchi Esumi, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, Samuel Heppelmann, Peifeng Liu, B. Tu, Yu-Gang Ma, Guannan Xie, R. Lednicky, Hanna Paulina Zbroszczyk, A. K. Bhati, Nikolai Smirnov, Xiaoping Zhang, Xu Sun, L. G. Efimov, Liang He, Ji Xu, F. G. Atetalla, Lanny Ray, H. Liu, David Stewart, Sevil Salur, T. G. Dedovich, H. Pei, N. Yu, Kejun Kang, L. V. Nogach, Isaac Upsal, Alexander Vasiliev, Tetsuro Sugiura, S. Kabana, Paul Sorensen, D. P. Kikola, B. Stringfellow, R. Fatemi, Todd Kinghorn, Ming Shao, M. Cherney, Rosi Reed, Lokesh Kumar, S. K. Tripathy, Rongrong Ma, Nihar Sahoo, X. C. Chen, Anthony Robert Timmins, Adam Ryszard Kisiel, J. Engelage, J. M. Landgraf, Dmitry Morozov, M. Strikhanov, J. Sandweiss, Nasim, Joel Anthony Mazer, Spiros Margetis, D. Tlusty, S. Das, Jing-Han Chen, Michal Sumbera, Catherine Tomkiel, Hank Crawford, P. Chaloupka, Ting Lin, A. H. Tang, Benjamin Schweid, T. J. Humanic, D. Arkhipkin, A. Hamed, Jesus Negrete, V. A. Okorokov, Lukas Holub, Bedangadas Mohanty, Robert E. Tribble, I. K. Yoo, M. M. Mondal, E. G. Judd, and E. P. Sichtermann
Subjects: Physics, 010308 nuclear & particles physics, media_common.quotation_subject, Hyperon, Vorticity, Polarization (waves), Lambda, 01 natural sciences, Asymmetry, Magnetic field, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, media_common
Abstract: Global polarization of $\Lambda$ hyperons has been measured to be of the order of a few tenths of a percent in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV, with no significant difference between $\Lambda$ and $\bar{\Lambda}$. These new results reveal the collision energy dependence of the global polarization together with the results previously observed at $\sqrt{s_{_{NN}}}$ = 7.7 -- 62.4 GeV and indicate noticeable vorticity of the medium created in non-central heavy-ion collisions at the highest RHIC collision energy. The signal is in rough quantitative agreement with the theoretical predictions from a hydrodynamic model and from the AMPT (A Multi-Phase Transport) model. The polarization is larger in more peripheral collisions, and depends weakly on the hyperon's transverse momentum and pseudorapidity $\eta^H$ within $|\eta^H
Published: 2018
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47. Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN=7.7 , 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Author: Jana Bielcikova, J. L. Romero, J. Engelage, David Brown, Zebo Tang, E. Finch, T. Kollegger, G. Nigmatkulov, Xuedong Bai, F. Liu, Miroslav Simko, N. Kulathunga, N. Xu, P. Filip, Mariusz Przybycien, B. Pawlik, D. G. Underwood, A. Gibson, J. M. Landgraf, K. Yip, Q. Yang, J. K. Adkins, R. Fatemi, L. He, Z. Chang, Shize Yang, G. D. Westfall, Jun Deng, C. Perkins, M. Strikhanov, M. Posik, H. M. Spinka, T. J. Humanic, A. K. Bhati, D. Keane, James Brandenburg, J. Fujita, K. N. Barish, K. Krueger, R. D. Majka, J. Cheng, R. S. Longacre, B.R. Schweid, Muhammad Usman Ashraf, Michal Sumbera, Abdel Nasser Tawfik, I. Kisel, C. Zhong, E. C. Aschenauer, Nikolai Smirnov, Xiaofeng Zhu, J. Schambach, L. G. Efimov, J. Sandweiss, Nasim, Anik Gupta, J. L. Drachenberg, Z. Ye, Justin Ewigleben, J. M. Campbell, S. W. Wissink, Sergey Voloshin, J. W. Harris, G. Odyniec, W. Christie, L. C. Bland, S. Margetis, A. Ogawa, T. K. Nayak, P. V. Shanmuganathan, Olga Evdokimov, Barbara Antonina Trzeciak, M. Cherney, Lokesh Kumar, Jorn Henning Putschke, A. A.P. Suaide, D. Mallick, A. V. Brandin, Frank Jm Geurts, Maowu Nie, D. L. Olvitt, E. Sangaline, D. Arkhipkin, B. S. Page, Y. Zhang, Andrey Vasiliev, Hua Pei, X. Huang, A. Kechechyan, S. K. Tripathy, X. Dong, D. Kapukchyan, A. Hamed, T. G. Dedovich, G. Igo, M. Kocmanek, Jay Roberts, D. P. Kikola, Roli Esha, A. H. Tang, B. Stringfellow, Vipul Bairathi, Zhigang Xiao, T. Huang, K. Jiang, X.G. Li, Zongye Zhang, Yunpeng Liu, Derek Anderson, N. G. Minaev, Janet Elizabeth Seger, J. Porter, Pradip Kumar Sahu, E. P. Sichtermann, J. Bouchet, L. Krauth, Jie Zhao, T. Lin, S. Horvat, K. Poniatowska, Giacomo Contin, C. Zhou, K. Meehan, I. Bunzarov, H. W. Ke, M. Calderon De La Barca Sanchez, A. I. Hamad, Chi Yang, Y. Panebratsev, D. Grosnick, T. Nonaka, Z. H. Khan, Y. Guo, I. G. Bordyuzhin, Lisa, Yanjun Wu, P. Seyboth, J. H. Thomas, S. Mizuno, J. Rusnak, Arka Chatterjee, Xiangming Sun, K. D. Landry, J. Butterworth, Nihar Sahoo, X. C. Chen, W. Zha, D. N. Svirida, Wei Xie, L. P. Zhou, S. H. Zhang, Anju Bhasin, T. Ullrich, R. Lacey, A. F. Kraishan, S. B. Nurushev, P. Bhattarai, G. S. Averichev, Isaac Upsal, Sedigheh Jowzaee, Y. F. Xu, M. K. Mustafa, L. Ruan, S. Fazio, I. K. Yoo, F. Videbæk, G. Webb, Y. Li, S. Singha, Q. H. Xu, Anthony Robert Timmins, Adam Ryszard Kisiel, M. Sergeeva, T. Todoroki, A. Aparin, T. Niida, A. Lebedev, Samuel Heppelmann, J. Xu, Sukalyan Chattopadhyay, H. J. Crawford, Leszek Adamczyk, Jongmin Lee, Z. Shi, R. L. Ray, A. A. Derevschikov, Tetsuro Sugiura, R. Ma, M. Tokarev, Yang Yang, A. Harlenderova, W. Guryn, Y. Pandit, N. Schmitz, E. Shahaliev, J. R. Adams, W. Solyst, Siwei Luo, P. Federic, P. Chaloupka, R. Witt, S. Mioduszewski, C-Q. Li, Z. J. Xu, M. J. Rehbein, Christina Markert, Y. J. Sun, C. Dilks, Peter Q. Liu, J. Kvapil, Z. W. Miller, L. Yi, M. Saur, O. D. Tsai, Z. Feng, J. Fedorisin, T. Ljubicic, D. Smirnov, O. Rusnakova, H. S. Matis, J. Bryslawskyj, S. Trentalange, Madan M. Aggarwal, John Z. H. Zhang, I. G. Alekseev, P. Federicova, C. E. Flores, E. G. Judd, Xiaofeng Luo, Nilay Shah, J. C. Mei, N. K. Pruthi, K. Kauder, T. D. S. Stanislaus, M. M. Mondal, Niseem Magdy, H. Caines, Chong Kim, B. Huang, Guo-Liang Ma, M. Lomnitz, Prithwish Tribedy, B. K. Srivastava, L. K. Kosarzewski, W. W. Jacobs, G. Eppley, Fuqiang Wang, W. Q. Shen, D. Tlusty, H. H. Wieman, J. Thäder, D. K. Mishra, Bedangadas Mohanty, J. Pluta, A. S. Hirsch, P. Kravtsov, H. G. Ritter, N. Chankova-Bunzarova, W. Li, Arabinda Behera, P. Sorensen, J. Lauret, Jiangyong Jia, A. M. Schmah, Xiang Sun, M. R. Girard, J. D. Roth, Rene Bellwied, N. Yu, J. Lidrych, Joseph Kwasizur, H. Liu, R. E. Tribble, Kejun Kang, L. V. Nogach, L. Didenko, I. Chakaberia, D. Kalinkin, J. C. Dunlop, L. Wen, R. Lednicky, L. Kochenda, T. Tarnowsky, Y. Wang, Rafal Sikora, Sumit R. Das, G. Van Nieuwenhuizen, J. C. Webb, Y. Fisyak, Lin Ma, M. Shao, G. Van Buren, K. Oh, R. Seto, Yinina Ma, G. Wang, Sevil Salur, Zubayer Ahammed, A. Vossen, S. S. Shi, G. Agakishiev, D. S. Gunarathne, D. Cebra, A. Taranenko, Zhanwen Zhu, S. Esumi, S. Kabana, Q. Y. Shou, Jaroslav Bielcik, R. Pak, M. J. Skoby, L. Fulek, O. V. Rogachevskiy, A. Quintero, M. Zyzak, Vitaly Okorokov, Bernd Surrow, N. Elsey, H. Z. Huang, S. Vokal, W. B. Schmidke, C. A. Gagliardi, J. H. Chen, D. A. Morozov, N.N. Ajitanand, B. J. Summa, J. B. Zhang, J. E. Draper, S. Ramachandran, O. Eyser, Guannan Xie, Xuan Zhang, R. Aoyama, Hanna Paulina Zbroszczyk, R. Reed, J. M. Nelson, W. J. Llope, Alexander Jentsch, A. Attri, and P. Huo
Subjects: Quantum chromodynamics, Physics, Proton, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, 01 natural sciences, Pion, Antiproton, 0103 physical sciences, High Energy Physics::Experiment, Impact parameter, Atomic physics, Nuclear Experiment, 010306 general physics, Jet quenching, Energy (signal processing)
Abstract: We report measurements of the nuclear modification factor R_{CP} for charged hadrons as well as identified π^{+(-)}, K^{+(-)}, and p(p[over ¯]) for Au+Au collision energies of sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-p_{T} net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton R_{CP} at high p_{T} does depend on the collision energy, neither the proton nor the antiproton R_{CP} at high p_{T} exhibit net suppression at any energy. A study of how the binary collision-scaled high-p_{T} yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.
Published: 2018
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48. Measurement of the HΛ3 lifetime in Au+Au collisions at the BNL Relativistic Heavy Ion Collider

Author: Q. H. Xu, J. W. Harris, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, T. Kollegger, S. Mizuno, Z. Feng, J. Xu, M. Lomnitz, D. Kalinkin, W. J. Llope, C. Zhou, D. L. Olvitt, E. P. Sichtermann, S. Heppelmann, B. J. Summa, P. Bhattarai, F. Liu, Miroslav Simko, N. Kulathunga, N. Xu, Guo-Liang Ma, P. Filip, Li Yi, P. Sorensen, Y. F. Wu, Mariusz Przybycien, X. G. Luo, Alexander Jentsch, K. Poniatowska, A. S. Hirsch, Siwei Luo, P. Kravtsov, A. M. Schmah, G. D. Westfall, Dmitry Smirnov, G. Eppley, S. Das, A. H. Tang, N. Magdy, Peng Huo, C-Q. Li, A. Attri, Giacomo Contin, A. Gupta, Bedangadas Mohanty, S. Ramachandran, O. Eyser, Joseph Kwasizur, A. Harlenderova, Md. Nasim, R. D. Majka, R. Witt, J. Alford, I. Bunzarov, D. Kapukchyan, J. Pluta, J. M. Campbell, M. Zyzak, J. D. Brandenburg, Guannan Xie, Xuan Zhang, J. L. Drachenberg, Tetsuro Sugiura, Zebo Tang, W. Guryn, N. Chankova-Bunzarova, Y. J. Sun, Jiangyong Jia, R. Lacey, S. Mioduszewski, M. J. Rehbein, Christina Markert, P. Federicova, W. Li, X. C. Chen, T. Ullrich, M. Shao, G. Van Buren, P. Chaloupka, Ting Lin, J. Schambach, C. Dilks, Anju Bhasin, J. D. Roth, D. N. Brown, G. J. van Nieuwenhuizen, Hanna Paulina Zbroszczyk, J. Bryslawskyj, A. K. Bhati, Rene Bellwied, L. Didenko, T. G. Dedovich, D. Keane, Prithwish Tribedy, B. K. Srivastava, O. Rusnakova, S. Kabana, K. Kang, T. Niida, M. Sergeeva, S. S. Shi, R. E. Tribble, H. Z. Huang, Wei Xie, M. K. Mustafa, S. Vokal, J. Rusnak, A. F. Kraishan, L. Ruan, S. Trentalange, A. Lebedev, I. K. Yoo, Z. Shi, Y. Fisyak, Lin Ma, K. Oh, A. Aparin, Olga Evdokimov, Barbara Antonina Trzeciak, Anthony Robert Timmins, J. Fujita, Jize Zhao, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, H. Liu, L. G. Efimov, T. K. Nayak, J. Lauret, Abdel Nasser Tawfik, R. Reed, J. Fedorisin, K. N. Barish, M. Saur, P. V. Shanmuganathan, Jay Roberts, C. Perkins, T. Todoroki, Y. Li, O. D. Tsai, Chong Kim, J. M. Nelson, Roli Esha, M. M. Mondal, C. E. Flores, E. G. Judd, Y. Pandit, A. V. Brandin, Muhammad Usman Ashraf, R. S. Longacre, Daniel Nemes, Adam Ryszard Kisiel, H. J. Crawford, J. K. Adkins, S. Horvat, T. Tarnowsky, Benjamin Schweid, T. J. Humanic, H. G. Ritter, W. Q. Shen, N. Schmitz, D. Arkhipkin, B. S. Page, K. Krueger, Avishek Chatterjee, A. Hamed, Sergey Voloshin, Michal Sumbera, L. C. Bland, P. Seyboth, D. P. Kikola, E. Shahaliev, Z. Chang, R. Fatemi, L. He, R. Lednicky, L. Kochenda, P. Federic, Y. G. Ma, B. Stringfellow, A. A. P. Suaide, K. Jiang, M. Calderon De La Barca Sanchez, A. I. Hamad, Y. Wang, Sedigheh Jowzaee, Rafal Sikora, Shangfeng Yang, J. H. Chen, Zhigang Xiao, David Stewart, T. Huang, Sevil Salur, G. Igo, S. Fazio, Zongye Zhang, Yunpeng Liu, Derek Anderson, M. Kocmanek, Peng Liu, N. G. Minaev, I. G. Bordyuzhin, Leszek Adamczyk, B. Pawlik, Y. Panebratsev, D. Grosnick, M. J. Skoby, Frank Jm Geurts, S. W. Wissink, Y. Zhang, M. R. Girard, J. C. Dunlop, L. Wen, Zubayer Ahammed, J. Bouchet, L. Krauth, Vipul Bairathi, W. Zha, B. Huang, I. Upsal, Jana Bielcikova, J. Thäder, J. R. Adams, A. A. Derevschikov, Y. F. Xu, M. Posik, D. A. Morozov, Z. W. Miller, R. Aoyama, K. D. Landry, K. Kauder, A. Taranenko, J. E. Draper, J. L. Romero, W. Christie, E. C. Aschenauer, S. Margetis, Subhash Singha, Andrey Vasiliev, Irakli Chakaberia, Z. Z. Xu, Arabinda Behera, S. Zhang, Dukhishyam Mallick, H. M. Spinka, Nikita Smirnov, J. Y. Zhang, E. Finch, D. G. Underwood, X. Dong, K. Meehan, N. Yu, Xuedong Bai, M. Cherney, Xiangming Sun, D. N. Svirida, Q. Y. Shou, L. V. Nogach, J. Porter, Lokesh Kumar, Jian Deng, Jindrich Lidrych, J. Putschke, Xiaofeng Zhu, Hua Pei, S. K. Tripathy, N. K. Pruthi, X. M. Sun, Ivan Kisel, R. Pak, G. Wang, J. Cheng, A. Ogawa, X.G. Li, Y. Guo, Jongmin Lee, C. Yang, R. Seto, R. L. Ray, R. Ma, G. Agakishiev, D. S. Gunarathne, N. Herrmann, T. Ljubicic, Janet Elizabeth Seger, J. H. Thomas, H. Caines, L. P. Zhou, S. B. Nurushev, A. Quintero, H. W. Ke, L. Fulek, I. M. Deppner, G. S. Averichev, D. Cebra, Zhanwen Zhu, Y. Yang, J. Kvapil, Justin Ewigleben, Nilay Shah, A. Gibson, C. Zhong, K. Yip, Vitaly Okorokov, Z. Ye, D. Tlusty, Bernd Surrow, Maowu Nie, X. Huang, A. Kechechyan, Niladribihari Sahoo, Pradip Kumar Sahu, T. Nonaka, Z. H. Khan, J. M. Butterworth, N. Elsey, J. Engelage, N. N. Ajitanand, G. Nigmatkulov, J. C. Webb, D. Mayes, J. M. Landgraf, M. Tokarev, M. Strikhanov, W. Solyst, T. D. S. Stanislaus, H. H. Wieman, W. B. Schmidke, G. Odyniec, J. Sandweiss, I. G. Alekseev, M. A. Lisa, J. C. Mei, C. A. Gagliardi, Jaroslav Bielcik, Jie Zhang, O. V. Rogachevskiy, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, A. Vossen, S. Esumi, and Qi Yang
Subjects: Nuclear physics, Physics, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, 010306 general physics, Hypernucleus, Relativistic Heavy Ion Collider, 01 natural sciences, Hypertriton
Abstract: Author(s): Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Alford, J; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, X; Chen, X; Chen, JH; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deng, J; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Feng, Z; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fujita, J | Abstract: An improved measurement of the HΛ3 lifetime is presented. In this paper, the mesonic decay modes HΛ3→He3 + π- and HΛ3→d+p+π- are used to reconstruct the HΛ3 from Au+Au collision data collected by the STAR collaboration at Relativistic Heavy Ion Collider (RHIC). A minimum χ2 estimation is used to determine the lifetime of τ=142-21+24(stat.)±29(syst.) ps. This lifetime is about 50% shorter than the lifetime τ=263±2 ps of a free Λ, indicating strong hyperon-nucleon interaction in the hypernucleus system. The branching ratios of the mesonic decay channels are also determined to satisfy B.R.(He3+π-)/(B.R.(He3+π-)+B.R.(d+p+π-))=0.32±0.05(stat.)±0.08(syst.). Our ratio result favors the assignment J(HΛ3)=12 over J(HΛ3)=32. These measurements will help to constrain models of hyperon-baryon interactions.
Published: 2018
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49. Beam-Energy Dependence of Directed Flow ofΛ,Λ¯,K±,Ks0, andϕinAu+AuCollisions

Author: J. M. Nelson, Arka Chatterjee, W. J. Llope, Muhammad Usman Ashraf, T. J. Humanic, N. Kulathunga, N. Xu, P. Filip, M. K. Mustafa, Sergey Voloshin, Y. Li, S. Singha, Xiangming Sun, Abdel Nasser Tawfik, Alexander Jentsch, C-Q. Li, P. Pile, G. D. Westfall, D. L. Olvitt, K. Jiang, M. J. Rehbein, Christina Markert, D. Smirnov, O. Rusnakova, A. Attri, P. Federic, H. S. Matis, Hao Qiu, Yanjun Wu, Jun Deng, P. Huo, B. S. Page, J. Y. Zhang, N. Yu, D. P. Kikola, L. K. Kosarzewski, Kejun Kang, L. V. Nogach, B. Stringfellow, Sumit R. Das, G. Van Nieuwenhuizen, W. W. Jacobs, Joseph Kwasizur, N. K. Pruthi, David Brown, T. Kollegger, J. Lauret, R. Lednicky, L. Kochenda, M. Sergeeva, F. Liu, Miroslav Simko, Mariusz Przybycien, Nasim, M. Shao, G. Van Buren, P. Seyboth, G. Eppley, T. Tarnowsky, S. Mizuno, S. S. Shi, J. M. Campbell, K. Kauder, T. G. Dedovich, F. Videbæk, G. Webb, Siwei Luo, J. Pluta, Leszek Adamczyk, Sukalyan Chattopadhyay, Jorn Henning Putschke, A. V. Brandin, J. Rusnak, D. Kapukchyan, N. Chankova-Bunzarova, W. Li, A. F. Kraishan, L. Ruan, J. D. Roth, R. D. Majka, Z. W. Miller, N.N. Ajitanand, S. Heppelmann, T. Todoroki, B. J. Summa, M. R. Girard, Guannan Xie, J. C. Webb, Xuan Zhang, Arabinda Behera, Rene Bellwied, R. Aoyama, R. Witt, R. E. Tribble, J. Schambach, R. Seto, Hanna Paulina Zbroszczyk, Madan M. Aggarwal, J. W. Harris, J. Jia, D. Tlusty, S. Mioduszewski, W. Christie, Z. Feng, Xiaofeng Zhu, T. Nonaka, Wei Xie, A. Aparin, Xiaofeng Luo, Yinina Ma, Zhigang Xiao, T. Huang, Yunpeng Liu, Derek Anderson, Roli Esha, P. Bhattarai, Isaac Upsal, Vipul Bairathi, James Brandenburg, J. Fujita, Guo-Liang Ma, R. Reed, Jie Zhao, T. Lin, S. Horvat, K. N. Barish, N. G. Minaev, Andrey Vasiliev, A. Ogawa, S. B. Nurushev, Mukesh Sharma, G. Wang, J. B. Zhang, Y. Pandit, Fuqiang Wang, S. Fazio, Xuliang Chen, Michal Sumbera, A. A. P. Suaide, J. E. Draper, X.G. Li, Prithwish Tribedy, B. K. Srivastava, Zongye Zhang, Y. Guo, I. G. Bordyuzhin, M. J. Skoby, N. Schmitz, D. K. Mishra, E. Shahaliev, A. H. Tang, L. E. Dunkelberger, A. S. Hirsch, I. Bunzarov, Z. H. Khan, W. Zha, Janet Elizabeth Seger, P. Kravtsov, A. K. Bhati, A. M. Schmah, L. Fulek, R. Lacey, S. Ramachandran, B.R. Schweid, Tetsuro Sugiura, Y. J. Sun, M. Calderon De La Barca Sanchez, A. I. Hamad, Anju Bhasin, A. A. Derevschikov, Jana Bielcikova, O. Eyser, Sedigheh Jowzaee, D. Keane, J. L. Romero, C. Dilks, S. W. Wissink, J. Thäder, D. Kalinkin, J. Engelage, Y. Zhang, T. Niida, A. Lebedev, Nikolai Smirnov, G. Nigmatkulov, J. C. Dunlop, L. Wen, L. Yi, Y. Wang, Y. Fisyak, P. Sorensen, Lin Ma, D. G. Underwood, E. Finch, Z. Shi, K. Oh, M. Saur, Peter Q. Liu, J. Kvapil, Xuedong Bai, Q. Yang, L. G. Efimov, J. M. Landgraf, Zubayer Ahammed, Nilay Shah, L. Didenko, I. Chakaberia, Chong Kim, Z. Ye, A. Vossen, M. Strikhanov, J. Cheng, T. K. Nayak, K. Yip, H. G. Ritter, Bedangadas Mohanty, J. Sandweiss, H. Z. Huang, S. Vokal, L. C. De Silva, Maowu Nie, Q. Y. Shou, X. Huang, M. Kocmanek, A. Harlenderova, Rafal Sikora, A. Kechechyan, R. Pak, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, W. Guryn, L. C. Bland, Pradip Kumar Sahu, Y. Panebratsev, D. Grosnick, J. Fedorisin, M. M. Mondal, S. Esumi, Jay Roberts, Anik Gupta, J. H. Chen, Chi Yang, D. N. Svirida, Jaroslav Bielcik, I. K. Yoo, M. Tokarev, Yang Yang, H. W. Ke, Frank Jm Geurts, D. A. Morozov, O. V. Rogachevskiy, A. Quintero, C. E. Flores, E. G. Judd, M. Zyzak, T. D. S. Stanislaus, H. H. Wieman, Vitaly Okorokov, Bernd Surrow, N. Elsey, C. Zhou, W. B. Schmidke, C. A. Gagliardi, K. Meehan, O. D. Tsai, A. Sharma, L. Song, W. Q. Shen, Xiang Sun, Zebo Tang, H. Liu, D. Garand, Sevil Salur, C. Perkins, R. S. Longacre, P. V. Shanmuganathan, D. Mallick, G. Igo, J. Bouchet, L. Krauth, Jongmin Lee, R. L. Ray, K. D. Landry, R. Ma, J. Butterworth, Y. F. Xu, Q. H. Xu, T. Ljubicic, J. Xu, Niseem Magdy, H. Caines, M. Lomnitz, P. Federicova, B. Huang, Justin Ewigleben, G. Odyniec, C. Zhong, E. C. Aschenauer, S. Margetis, X. Dong, E. P. Sichtermann, T. Ullrich, J. R. Adams, W. Solyst, J. Lidrych, G. Agakishiev, D. S. Gunarathne, D. Cebra, A. Taranenko, Zhanwen Zhu, S. Kabana, I. G. Alekseev, M. A. Lisa, J. C. Mei, Z. Chang, Shize Yang, M. Posik, H. M. Spinka, J. K. Adkins, R. Fatemi, L. He, J. H. Thomas, K. Krueger, L. P. Zhou, I. Kisel, M. Cherney, Lokesh Kumar, Hua Pei, S. K. Tripathy, K. Poniatowska, S. K. Gupta, Giacomo Contin, G. S. Averichev, Nihar Sahoo, J. Porter, Anthony Robert Timmins, Adam Ryszard Kisiel, H. J. Crawford, B. Pawlik, A. Gibson, S. Zhang, P. Chaloupka, Z. J. Xu, S. Trentalange, D. Arkhipkin, and A. Hamed
Subjects: Quantum chromodynamics, Quark, Physics, 010308 nuclear & particles physics, Elliptic flow, Hadron, General Physics and Astronomy, Lambda, 01 natural sciences, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Sum rule in quantum mechanics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: Rapidity-odd directed-flow measurements at midrapidity are presented for Λ, Λ[over ¯], K^{±}, K_{s}^{0}, and ϕ at sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV in Au+Au collisions recorded by the Solenoidal Tracker detector at the Relativistic Heavy Ion Collider. These measurements greatly expand the scope of data available to constrain models with differing prescriptions for the equation of state of quantum chromodynamics. Results show good sensitivity for testing a picture where flow is assumed to be imposed before hadron formation and the observed particles are assumed to form via coalescence of constituent quarks. The pattern of departure from a coalescence-inspired sum rule can be a valuable new tool for probing the collision dynamics.
Published: 2018
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50. Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN =7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Author: L, Adamczyk, J R, Adams, J K, Adkins, G, Agakishiev, M M, Aggarwal, Z, Ahammed, N N, Ajitanand, I, Alekseev, D M, Anderson, R, Aoyama, A, Aparin, D, Arkhipkin, E C, Aschenauer, M U, Ashraf, A, Attri, G S, Averichev, X, Bai, V, Bairathi, K, Barish, A, Behera, R, Bellwied, A, Bhasin, A K, Bhati, P, Bhattarai, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, J, Bouchet, J D, Brandenburg, A V, Brandin, D, Brown, I, Bunzarov, J, Butterworth, H, Caines, M, Calderón de la Barca Sánchez, J M, Campbell, D, Cebra, I, Chakaberia, P, Chaloupka, Z, Chang, N, Chankova-Bunzarova, A, Chatterjee, S, Chattopadhyay, J H, Chen, X, Chen, J, Cheng, M, Cherney, W, Christie, G, Contin, H J, Crawford, S, Das, L C, De Silva, R R, Debbe, T G, Dedovich, J, Deng, A A, Derevschikov, L, Didenko, C, Dilks, X, Dong, J L, Drachenberg, J E, Draper, L E, Dunkelberger, J C, Dunlop, L G, Efimov, N, Elsey, J, Engelage, G, Eppley, R, Esha, S, Esumi, O, Evdokimov, J, Ewigleben, O, Eyser, R, Fatemi, S, Fazio, P, Federic, P, Federicova, J, Fedorisin, Z, Feng, P, Filip, E, Finch, Y, Fisyak, C E, Flores, J, Fujita, L, Fulek, C A, Gagliardi, D, Garand, F, Geurts, A, Gibson, M, Girard, D, Grosnick, D S, Gunarathne, Y, Guo, S, Gupta, A, Gupta, W, Guryn, A I, Hamad, A, Hamed, A, Harlenderova, J W, Harris, L, He, S, Heppelmann, A, Hirsch, G W, Hoffmann, S, Horvat, X, Huang, H Z, Huang, T, Huang, B, Huang, T J, Humanic, P, Huo, G, Igo, W W, Jacobs, A, Jentsch, J, Jia, K, Jiang, S, Jowzaee, E G, Judd, S, Kabana, D, Kalinkin, K, Kang, D, Kapukchyan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, Z, Khan, D P, Kikoła, C, Kim, I, Kisel, A, Kisiel, L, Kochenda, M, Kocmanek, T, Kollegger, L K, Kosarzewski, A F, Kraishan, L, Krauth, P, Kravtsov, K, Krueger, N, Kulathunga, L, Kumar, J, Kvapil, J H, Kwasizur, R, Lacey, J M, Landgraf, K D, Landry, J, Lauret, A, Lebedev, R, Lednicky, J H, Lee, C, Li, W, Li, Y, Li, X, Li, J, Lidrych, T, Lin, M A, Lisa, P, Liu, F, Liu, H, Liu, Y, Liu, T, Ljubicic, W J, Llope, M, Lomnitz, R S, Longacre, X, Luo, S, Luo, G L, Ma, L, Ma, Y G, Ma, R, Ma, N, Magdy, R, Majka, D, Mallick, S, Margetis, C, Markert, H S, Matis, K, Meehan, J C, Mei, Z W, Miller, N G, Minaev, S, Mioduszewski, D, Mishra, S, Mizuno, B, Mohanty, M M, Mondal, D A, Morozov, M K, Mustafa, Md, Nasim, T K, Nayak, J M, Nelson, M, Nie, G, Nigmatkulov, T, Niida, L V, Nogach, T, Nonaka, S B, Nurushev, G, Odyniec, A, Ogawa, K, Oh, V A, Okorokov, D, Olvitt, B S, Page, R, Pak, Y, Pandit, Y, Panebratsev, B, Pawlik, H, Pei, C, Perkins, P, Pile, J, Pluta, K, Poniatowska, J, Porter, M, Posik, N K, Pruthi, M, Przybycien, J, Putschke, H, Qiu, A, Quintero, S, Ramachandran, R L, Ray, R, Reed, M J, Rehbein, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, J D, Roth, L, Ruan, J, Rusnak, O, Rusnakova, N R, Sahoo, P K, Sahu, S, Salur, J, Sandweiss, E, Sangaline, M, Saur, J, Schambach, A M, Schmah, W B, Schmidke, N, Schmitz, B R, Schweid, J, Seger, M, Sergeeva, R, Seto, P, Seyboth, N, Shah, E, Shahaliev, P V, Shanmuganathan, M, Shao, M K, Sharma, A, Sharma, W Q, Shen, Z, Shi, S S, Shi, Q Y, Shou, E P, Sichtermann, R, Sikora, M, Simko, S, Singha, M J, Skoby, D, Smirnov, N, Smirnov, W, Solyst, L, Song, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, M, Strikhanov, B, Stringfellow, T, Sugiura, M, Sumbera, B, Summa, X M, Sun, Y, Sun, X, Sun, B, Surrow, D N, Svirida, A H, Tang, Z, Tang, A, Taranenko, T, Tarnowsky, A, Tawfik, J, Thäder, J H, Thomas, A R, Timmins, D, Tlusty, T, Todoroki, M, Tokarev, S, Trentalange, R E, Tribble, P, Tribedy, S K, Tripathy, B A, Trzeciak, O D, Tsai, T, Ullrich, D G, Underwood, I, Upsal, G, Van Buren, G, van Nieuwenhuizen, A N, Vasiliev, F, Videbæk, S, Vokal, S A, Voloshin, A, Vossen, F, Wang, Y, Wang, G, Wang, J C, Webb, G, Webb, L, Wen, G D, Westfall, H, Wieman, S W, Wissink, R, Witt, Y, Wu, Z G, Xiao, G, Xie, W, Xie, Z, Xu, N, Xu, Y F, Xu, Q H, Xu, J, Xu, Q, Yang, C, Yang, S, Yang, Y, Yang, Z, Ye, L, Yi, K, Yip, I-K, Yoo, N, Yu, H, Zbroszczyk, W, Zha, X P, Zhang, S, Zhang, J B, Zhang, J, Zhang, Z, Zhang, Y, Zhang, J, Zhao, C, Zhong, L, Zhou, C, Zhou, Z, Zhu, X, Zhu, M, Zyzak, Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Ajitanand, N. N., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Attri, A., Averichev, G. S., Bai, X., Bairathi, V., Barish, K., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Bouchet, J., Brandenburg, J. D., Brandin, A. V., Brown, D., Bunzarov, I., Butterworth, J., Caines, H., De La Barca Sánchez, M. C., Campbell, J. M., Cebra, D., Chakaberia, I., Chaloupka, P., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Contin, G., Crawford, H. J., Das, S., De Silva, L. C., Debbe, R. R., Dedovich, T. G., Deng, J., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Draper, J. E., Dunkelberger, L. E., Dunlop, J. C., Efimov, L. G., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Federicova, P., Fedorisin, J., Feng, Z., Filip, P., Finch, E., Fisyak, Y., Flores, C. E., Fujita, J., Fulek, L., Gagliardi, C. A., Garand, D., Geurts, F., Gibson, A., Girard, M., Grosnick, D., Gunarathne, D. S., Guo, Y., Gupta, S., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harlenderova, A., Harris, J. W., He, L., Heppelmann, S., Hirsch, A., Hoffmann, G. W., Horvat, S., Huang, X., Huang, H. Z., Huang, T., Huang, B., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jentsch, A., Jia, J., Jiang, K., Jowzaee, S., Judd, E. G., Kabana, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Khan, Z., Kikoła, D. P., Kim, C., Kisel, I., Kisiel, A., Kochenda, L., Kocmanek, M., Kollegger, T., Kosarzewski, L. K., Kraishan, A. F., Krauth, L., Kravtsov, P., Krueger, K., Kulathunga, N., Kumar, L., Kvapil, J., Kwasizur, J. H., Lacey, R., Landgraf, J. M., Landry, K. D., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, Y., Li, X., Lidrych, J., Lin, T., Lisa, M. A., Liu, P., Liu, F., Liu, H., Liu, Y., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, X., Luo, S., Ma, G. L., Ma, L., Ma, Y. G., Ma, R., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Meehan, K., Mei, J. C., Miller, Z. W., Minaev, N. G., Mioduszewski, S., Mishra, D., Mizuno, S., Mohanty, B., Mondal, M. M., Morozov, D. A., Mustafa, M. K., Nasim, Md., Nayak, T. K., Nelson, J. M., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Nurushev, S. B., Odyniec, G., Ogawa, A., Oh, K., Okorokov, V. A., Olvitt, D., Page, B. S., Pak, R., Pandit, Y., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Pile, P., Pluta, J., Poniatowska, K., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Qiu, H., Quintero, A., Ramachandran, S., Ray, R. L., Reed, R., Rehbein, M. J., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Roth, J. D., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Sangaline, E., Saur, M., Schambach, J., Schmah, A. M., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Sharma, M. K., Sharma, A., Shen, W. Q., Shi, Z., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Sikora, R., Simko, M., Singha, S., Skoby, M. J., Smirnov, D., Smirnov, N., Solyst, W., Song, L., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Strikhanov, M., Stringfellow, B., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, X., Surrow, B., Svirida, D. N., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Tawfik, A., Thäder, J., Thomas, J. H., Timmins, A. R., Tlusty, D., Todoroki, T., Tokarev, M., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Trzeciak, B. A., Tsai, O. D., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Van Nieuwenhuizen, G., Vasiliev, A. N., Videbæk, F., Vokal, S., Voloshin, S. A., Vossen, A., Wang, F., Wang, Y., Wang, G., Webb, J. C., Webb, G., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, Z., Xu, N., Xu, Y. F., Xu, Q. H., Xu, J., Yang, Q., Yang, C., Yang, S., Yang, Y., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Yu, N., Zbroszczyk, H., Zha, W., Zhang, X. P., Zhang, S., Zhang, J. B., Zhang, J., Zhang, Z., Zhang, Y., Zhao, J., Zhong, C., Zhou, L., Zhou, C., Zhu, Z., Zhu, X., and Zyzak, M.
Subjects: jet quenching, RHIC, STAR, nuclear modification factor, heavy ions, heavy ion
Abstract: We report measurements of the nuclear modification factor R_{CP} for charged hadrons as well as identified π^{+(-)}, K^{+(-)}, and p(p[over ¯]) for Au+Au collision energies of sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-p_{T} net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton R_{CP} at high p_{T} does depend on the collision energy, neither the proton nor the antiproton R_{CP} at high p_{T} exhibit net suppression at any energy. A study of how the binary collision-scaled high-p_{T} yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.
Published: 2018

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