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1. Invariant jet mass measurements in pp collisions at s=200 GeV at RHIC

Author: A. Pandav, Z. Ye, Maowu Nie, Xiaoyu Liu, Muhammad Usman Ashraf, Li Yi, X. Huang, A. Kechechyan, G. Agakishiev, J. H. Thomas, D. Cebra, T. Nonaka, M. M. Mondal, E. G. Judd, Zhanwen Zhu, P. Kravtsov, W. Guryn, R. Lacey, W. J. Llope, C. Zhou, F-H. Chang, R. Kunnawalkam Elayavalli, Yunlan Ji, Sergey Voloshin, Xinyue Ju, L. V. Nogach, N. Xu, P. Filip, R. Nishitani, A. Ewigleben, L. S. Pinsky, Alexander Jentsch, A. Attri, R. Seto, Y. Huang, G. D. Westfall, A. Gupta, P. Seyboth, J. Fedorisin, M. Tokarev, K. Yip, J. S. Wang, P. Bhagat, C. Racz, J. B. Singh, S. Kumar, F. G. Atetalla, O. D. Tsai, Vitaly Okorokov, K. Jiang, Y. Wang, C. Fu, A. Dhamija, J. K. Adkins, R. Fatemi, G. S. Averichev, Guannan Xie, Xuan Zhang, I. G. Alekseev, M. A. Lisa, T. G. Dedovich, P. C. Weidenkaff, D. Kincses, H. Z. Huang, V. Verkest, S. Vokal, Wei Xie, X. Chu, W. He, J. D. Nam, F. Videbæk, M. J. Skoby, Frank Jm Geurts, Audrey Francisco, T. Galatyuk, K. Gopal, R. S. Longacre, A. Aparin, Hanna Paulina Zbroszczyk, Daniel Nemes, J. D. Brandenburg, A. Gibson, P. Szymanski, T. D. S. Stanislaus, B. K. Chan, Michal Sumbera, Sukalyan Chattopadhyay, A. A. P. Suaide, Catherine Tomkiel, J. Rusnak, I. Upsal, Jan Vanek, J. Porter, L. Didenko, H. H. Wieman, Leszek Adamczyk, L. Di Carlo, Bernd Surrow, David Stewart, Chitrasen Jena, M. L. Kabir, S. W. Wissink, D. Neff, Y. Zhang, E. C. Aschenauer, Diana Pawlowska, A. G. Knospe, L. Ruan, J. H. Chen, C. J. Feng, Rajarshi Ray, Ivan Kisel, J. M. Butterworth, W. Zha, N. Schmitz, Sevil Salur, A. K. Pandey, B. Pawlik, Y. Li, J. C. Webb, E. Shahaliev, C. Yang, D. Shen, S. Margetis, M. Csanad, Z. J. Zhang, R. Reed, K. N. Barish, Y. Yang, T. Todoroki, J. R. Adams, Y. F. Xu, Xiangming Sun, B. Xi, P. Federic, A. Mukherjee, Susumu Sato, N. Elsey, P. V. Shanmuganathan, G. Ponimatkin, Hua Pei, N. Magdy, Lukas Holub, Bedangadas Mohanty, S. K. Tripathy, D. A. Morozov, Nilay Shah, Hao Qiu, W. Solyst, D. Keane, J. Putschke, Xiaofeng Zhu, Ying Liang, X. Dong, T. Tarnowsky, M. I. Nagy, Y. F. Wu, D. G. Underwood, S. Zhang, A. V. Brandin, B. R. Pokhrel, W. Christie, N. K. Pruthi, E. Loyd, F. M. Fawzi, N. Raha, Z. Chang, Z. Liu, K. Kauder, A. Taranenko, W. Baker, Zebo Tang, D. Kapukchyan, A. Ogawa, W. B. Schmidke, A. S. Nunes, Zhigang Xiao, T. Huang, H. Harrison, C. A. Gagliardi, S. Lan, Vipul Bairathi, Yunpeng Liu, Y. Han, Y. Söhngen, D. Kalinkin, Irakli Chakaberia, Jiangyong Jia, S. Heppelmann, J. Cheng, B. J. Summa, J. Wu, A. A. Derevschikov, F. Seck, H. Liu, N. G. Minaev, H. Sako, Peng Liu, Y. Panebratsev, Saehanseul Oh, D. Grosnick, M. Posik, Arabinda Behera, C-Q. Li, B. Kimelman, Qi Yang, Zuojia Wang, Q. H. Xu, P. Parfenov, C. Perkins, Jana Bielcikova, Zhenyu Chen, H. M. Spinka, Isaac Mooney, J. L. Romero, Madan M. Aggarwal, Fuqiang Wang, Subhash Singha, Z. W. Sweger, Somnath Choudhury, S. Harabasz, D. Isenhower, D. N. Svirida, Benjamin Schweid, Christina Markert, T. J. Humanic, Lukas Kramarik, A. Hamed, Sooraj Krishnan Radhakrishnan, Y. He, E. Finch, Andrey Vasiliev, X. C. Chen, Z. Z. Xu, H. S. Matis, O. Eyser, G. Eppley, M. Chevalier, Nikita Smirnov, K. Nayak, P. Sorensen, J. Pluta, Joseph Kwasizur, M. Shao, G. Van Buren, Alexander Kiselev, T. Shao, X. Gou, L. K. Kosarzewski, Robert Licenik, W. W. Jacobs, Anthony Robert Timmins, M. Zyzak, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, Jongmin Lee, D. Zhang, R. Ma, S. Esumi, S. S. Shi, Roland Laszlo Pinter, H. J. Crawford, X.G. Li, Rene Bellwied, J. Lauret, R. E. Tribble, P. Chaloupka, Y. Fisyak, J. M. Nelson, Ting Lin, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, I. Aggarwal, J. G. Ball Cap, T. Ljubicic, X. H. He, Jize Zhao, S. Trentalange, Y. Lin, Y. G. Ma, Jing-Han Chen, Lin Ma, H. Caines, Janet Elizabeth Seger, Z. Tu, A. Quintero, Jaroslav Bielcik, E. P. Sichtermann, Maria Stefaniak, Y. Hu, O. V. Rogachevskiy, S. Fazio, Zongye Zhang, V. Prozorova, I. G. Bordyuzhin, M. S. Abdallah, I. M. Deppner, T. Ullrich, G. Wang, C. C. Zhang, X. Z. Cai, H. S. Xu, X. M. Sun, M. S. Daugherity, Anju Bhasin, H. W. Ke, M. D. Harasty, L. Fulek, N. Herrmann, N. Ghimire, K. Kang, T. Niida, Chong Kim, Ashik Ikbal Sheikh, Donald M. Anderson, H. G. Ritter, A. Lebedev, E. Hoffman, Rafal Sikora, F. Liu, Miroslav Simko, Mariusz Przybycien, J. W. Harris, Md. Nasim, N. S. Lukow, R. D. Majka, J. L. Drachenberg, X. G. Luo, A. H. Tang, Pengdong Wang, I. Bunzarov, M. Calderon De La Barca Sanchez, A. I. Hamad, M. Robotkova, Dukhishyam Mallick, Lokesh Kumar, Jaroslav Adam, Y. H. Leung, X. Liang, Y. Yu, R. Witt, S. Mioduszewski, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, J. C. Dunlop, L. Wen, Zubayer Ahammed, Q. Y. Shou, R. Pak, Olga Evdokimov, Barbara Antonina Trzeciak, Maria Zurek, Yicheng Feng, Y. Shi, J. Engelage, G. Nigmatkulov, J. M. Landgraf, D. Chen, M. Strikhanov, G. Odyniec, J. Sandweiss, Joel Anthony Mazer, S. He, D. Tlusty, Niladribihari Sahoo, Tong Liu, M. Sergeeva, T. Truhlar, B. S. Page, Avishek Chatterjee, D. P. Kikola, B. Stringfellow, I. Vassiliev, Y. J. Sun, and S. Kabana
Subjects: Physics, Particle physics, Jet (fluid), Chatterjee, Transverse momentum, Perturbative QCD, Invariant (mathematics)
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; Caines, H; De La Barca Sanchez, MC; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We present the first inclusive measurements of the invariant and softdrop jet mass in proton-proton collisions at s=200 GeV at STAR. The measurements are fully corrected for detector effects, and reported differentially in both the jet transverse momentum and jet radius parameter. We compare the measurements to established leading-order Monte Carlo event generators and find that STAR-tuned pythia-6 reproduces the data, while LHC tunes of pythia-8 and herwig-7 do not agree with the data, providing further constraints on parameter tuning. Finally, we observe that softdrop grooming, for which the contribution of wide-angle nonperturbative radiation is suppressed, shifts the jet mass distributions into closer agreement with the partonic jet mass as determined by both pythia-8 and a next-to-leading-logarithmic accuracy perturbative QCD calculation. These measurements complement recent LHC measurements in a different kinematic region, as well as establish a baseline for future jet mass measurements in heavy-ion collisions at RHIC.
Published: 2021

2. Cumulants and correlation functions of net-proton, proton, and antiproton multiplicity distributions in Au+Au collisions at energies available at the BNL Relativistic Heavy Ion Collider

Author: G. Eppley, Y. Yu, J. Porter, R. Witt, M. Chevalier, M. Tokarev, S. Mioduszewski, J. Pluta, M. Zyzak, F. Liu, Miroslav Simko, A. Pandav, Ivan Kisel, Mariusz Przybycien, N. Chankova-Bunzarova, W. Li, Jongmin Lee, P. Szymanski, Z. J. Zhang, Prithwish Tribedy, R. Ma, B. K. Srivastava, Skipper Kagamaster, T. D. S. Stanislaus, Shengli Huang, H. H. Wieman, Joel Anthony Mazer, Z. Yang, Rene Bellwied, Md. Nasim, R. D. Majka, J. L. Drachenberg, M. Calderon De La Barca Sanchez, A. I. Hamad, S. He, R. E. Tribble, Y. Fisyak, D. Tlusty, J. G. Ball Cap, T. Ljubicic, I. Vassiliev, Lin Ma, W. Christie, Jize Zhao, X. H. He, M. Robotkova, N. Raha, R. S. Longacre, Y. Lin, J. K. Adkins, D. Kalinkin, Niladribihari Sahoo, Tong Liu, H. Caines, Subhash Singha, Andrey Vasiliev, Zhigang Xiao, T. Huang, Yunpeng Liu, A. Quintero, N. G. Minaev, J. H. Thomas, B. Kimelman, R. Kunnawalkam Elayavalli, Dukhishyam Mallick, M. L. Kabir, Jiangyong Jia, S. Heppelmann, B. J. Summa, X.G. Li, Yunlan Ji, G. Wang, R. Fatemi, Z. Ye, Janet Elizabeth Seger, J. C. Dunlop, L. Wen, Maria Stefaniak, Maowu Nie, X. Huang, R. Seto, A. Kechechyan, Y. Huang, Isaac Mooney, F-H. Chang, S. Harabasz, I. M. Deppner, A. Gibson, J. B. Singh, B. Pawlik, M. D. Harasty, N. Herrmann, I. Upsal, D. Shen, Zubayer Ahammed, M. Sergeeva, J. Engelage, T. Truhlar, T. Nonaka, W. Guryn, R. Lacey, R. Nishitani, S. Kumar, O. Eyser, E. P. Sichtermann, G. Nigmatkulov, Anju Bhasin, Zebo Tang, P. Seyboth, L. Di Carlo, A. K. Pandey, Y. Li, J. M. Landgraf, V. Prozorova, S. Zhang, K. Kauder, A. Taranenko, G. S. Averichev, K. N. Barish, J. Fedorisin, B. Xi, Xiangming Sun, Q. Y. Shou, P. V. Shanmuganathan, T. Tarnowsky, T. G. Dedovich, F. G. Atetalla, K. Kang, T. Niida, F. M. Fawzi, Z. Chang, D. Chen, A. Lebedev, Jan Vanek, Leszek Adamczyk, J. M. Butterworth, X. Z. Cai, X. M. Sun, J. C. Webb, A. A. Derevschikov, R. Pak, Qi Yang, Daniel Nemes, Zuojia Wang, Q. H. Xu, S. Lan, M. I. Nagy, Y. F. Wu, Olga Evdokimov, Barbara Antonina Trzeciak, F. Seck, C. Racz, M. Strikhanov, Hua Pei, S. K. Tripathy, M. S. Abdallah, Alexander Kiselev, X. Gou, Muhammad Usman Ashraf, T. Ullrich, W. Zha, O. D. Tsai, C. Yang, Susumu Sato, N. K. Pruthi, Hao Qiu, W. Solyst, A. S. Nunes, H. Z. Huang, V. Verkest, S. Vokal, Audrey Francisco, P. Federic, Maria Zurek, B. S. Page, Avishek Chatterjee, D. P. Kikola, B. Stringfellow, M. S. Daugherity, H. W. Ke, L. Fulek, J. R. Adams, C. Perkins, W. Baker, C. C. Zhang, H. S. Xu, W. He, J. D. Brandenburg, Madan M. Aggarwal, M. Posik, Arabinda Behera, H. M. Spinka, Fuqiang Wang, Z. W. Sweger, Lokesh Kumar, Jaroslav Adam, Y. H. Leung, D. G. Underwood, X. Liang, Somnath Choudhury, J. W. Harris, P. Chaloupka, Ting Lin, Sergey Voloshin, Xinyue Ju, L. Didenko, P. C. Weidenkaff, L. V. Nogach, N. Ghimire, Yicheng Feng, Y. Shi, Shangfeng Yang, D. Kapukchyan, N. S. Lukow, P. Parfenov, J. H. Chen, K. Gopal, C. J. Feng, Rajarshi Ray, Y. Han, S. Trentalange, J. Cheng, J. Wu, Y. J. Sun, H. Liu, P. Sorensen, C. Fu, D. A. Morozov, A. Dhamija, Chong Kim, X. G. Luo, X. C. Chen, E. C. Aschenauer, G. Agakishiev, H. Sako, Joseph Kwasizur, Ashik Ikbal Sheikh, K. Jiang, D. Cebra, Y. Wang, S. Kabana, A. H. Tang, Pengdong Wang, S. Margetis, M. Shao, G. Van Buren, Benjamin Schweid, T. J. Humanic, David Stewart, Robert Licenik, Jana Bielcikova, Anthony Robert Timmins, A. Hamed, S. S. Shi, J. L. Romero, T. Shao, X. Dong, Donald M. Anderson, H. G. Ritter, I. Bunzarov, D. Zhang, Sevil Salur, Zhanwen Zhu, Lukas Kramarik, Roland Laszlo Pinter, H. J. Crawford, J. M. Nelson, S. Esumi, Sooraj Krishnan Radhakrishnan, M. J. Skoby, Frank Jm Geurts, T. Galatyuk, Y. He, E. Finch, E. Hoffman, Rafal Sikora, Peng Liu, Y. G. Ma, Jing-Han Chen, I. G. Alekseev, M. A. Lisa, Y. Panebratsev, Saehanseul Oh, D. Grosnick, I. Aggarwal, Wei Xie, J. D. Nam, Y. F. Xu, D. Isenhower, A. Aparin, Z. Z. Xu, Jaroslav Bielcik, Nikita Smirnov, K. Nayak, Y. Söhngen, N. Schmitz, A. G. Knospe, E. Shahaliev, D. N. Svirida, D. Keane, Y. Hu, H. Harrison, O. V. Rogachevskiy, Vitaly Okorokov, Bernd Surrow, A. Mukherjee, N. Elsey, W. B. Schmidke, C. A. Gagliardi, W. J. Llope, C. Zhou, Alexander Jentsch, A. Attri, P. Bhagat, Guannan Xie, Xuan Zhang, Hanna Paulina Zbroszczyk, R. Reed, B. R. Pokhrel, G. Odyniec, J. Sandweiss, M. Csanad, J. Putschke, Xiaofeng Zhu, Ying Liang, A. Ogawa, C-Q. Li, A. V. Brandin, N. Xu, P. Filip, G. D. Westfall, A. Gupta, Christina Markert, X. Chu, J. Rusnak, H. S. Matis, L. Ruan, T. Todoroki, F. Videbæk, Vipul Bairathi, L. K. Kosarzewski, Irakli Chakaberia, W. W. Jacobs, Sukalyan Chattopadhyay, J. Lauret, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Zhenyu Chen, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, Catherine Tomkiel, Chitrasen Jena, A. Ewigleben, L. S. Pinsky, K. Yip, J. S. Wang, S. Fazio, Zongye Zhang, Diana Pawlowska, S. W. Wissink, D. Neff, I. G. Bordyuzhin, Y. Zhang, D. Kincses, Xiaoyu Liu, Y. Yang, G. Ponimatkin, Nilay Shah, Li Yi, M. M. Mondal, E. G. Judd, P. Kravtsov, N. Magdy, Lukas Holub, Bedangadas Mohanty, E. Loyd, and Z. Liu
Subjects: Physics, Nuclear physics, Fourth order, Proton, Antiproton, Rapidity, Multiplicity (mathematics), Net (mathematics), Relativistic Heavy Ion Collider, Beam energy
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; 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, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We report a systematic measurement of cumulants, Cn, for net-proton, proton, and antiproton multiplicity distributions, and correlation functions, κn, for proton and antiproton multiplicity distributions up to the fourth order in Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, 39, 54.4, 62.4, and 200 GeV. The Cn and κn are presented as a function of collision energy, centrality and kinematic acceptance in rapidity, y, and transverse momentum, pT. The data were taken during the first phase of the Beam Energy Scan (BES) program (2010-2017) at the BNL Relativistic Heavy Ion Collider (RHIC) facility. The measurements are carried out at midrapidity (|y|l 0.5) and transverse momentum 0.4
Published: 2021

3. Azimuthal anisotropy measurements of strange and multistrange hadrons in U+U collisions at sNN=193 GeV at the BNL Relativistic Heavy Ion Collider

Author: C. Racz, W. J. Llope, C. Zhou, H. Z. Huang, V. Verkest, S. Vokal, A. V. Brandin, F. M. Fawzi, Z. Chang, Audrey Francisco, Alexander Jentsch, Vipul Bairathi, Z. Ye, S. Lan, Irakli Chakaberia, A. Attri, F. Seck, P. Bhagat, Maowu Nie, Shangfeng Yang, Muhammad Usman Ashraf, X. Huang, J. H. Chen, C. J. Feng, Rajarshi Ray, A. Kechechyan, Vitaly Okorokov, Zhenyu Chen, Sergey Voloshin, Xinyue Ju, M. Posik, T. Nonaka, Arabinda Behera, Bernd Surrow, D. Keane, Daniel Nemes, A. Mukherjee, N. Elsey, D. A. Morozov, H. M. Spinka, Z. W. Sweger, Somnath Choudhury, J. W. Harris, N. S. Lukow, K. Jiang, Zhigang Xiao, Y. Wang, T. Huang, Yunpeng Liu, N. G. Minaev, B. Kimelman, W. Baker, J. Engelage, G. Nigmatkulov, M. Tokarev, B. R. Pokhrel, W. B. Schmidke, H. Harrison, F. G. Atetalla, O. D. Tsai, N. Ghimire, N. Magdy, Lukas Holub, Bedangadas Mohanty, J. H. Thomas, J. M. Landgraf, N. Xu, P. Filip, X. G. Luo, G. D. Westfall, W. He, S. Fazio, Zongye Zhang, P. Szymanski, T. D. S. Stanislaus, I. G. Alekseev, H. H. Wieman, M. A. Lisa, Yunlan Ji, I. G. Bordyuzhin, A. H. Tang, Pengdong Wang, A. Ewigleben, W. Zha, C. A. Gagliardi, J. D. Brandenburg, Y. Yu, X. C. Chen, P. C. Weidenkaff, K. Gopal, Chong Kim, D. Kalinkin, E. Loyd, Guannan Xie, D. Chen, M. Strikhanov, A. Gupta, N. Raha, J. Rusnak, L. Ruan, Xuan Zhang, T. Todoroki, Qi Yang, Zuojia Wang, P. Seyboth, L. S. Pinsky, I. Bunzarov, K. Yip, A. Pandav, J. S. Wang, J. R. Adams, David Stewart, Z. Liu, R. Witt, S. Heppelmann, Hanna Paulina Zbroszczyk, A. Gibson, F-H. Chang, G. Odyniec, J. Sandweiss, Q. H. Xu, Ashik Ikbal Sheikh, E. P. Sichtermann, L. Didenko, Donald M. Anderson, Jiangyong Jia, S. Mioduszewski, Robert Licenik, Anthony Robert Timmins, Jan Vanek, Leszek Adamczyk, Jaroslav Bielcik, D. G. Underwood, B. J. Summa, Sevil Salur, Zebo Tang, X. Chu, Joel Anthony Mazer, S. He, Isaac Mooney, H. G. Ritter, Roland Laszlo Pinter, H. J. Crawford, J. K. Adkins, K. N. Barish, W. Christie, J. M. Butterworth, R. Reed, R. Fatemi, Y. Hu, S. Harabasz, Prithwish Tribedy, B. K. Srivastava, Peng Liu, Y. Panebratsev, Saehanseul Oh, D. Grosnick, Maria Stefaniak, L. Di Carlo, D. Tlusty, B. K. Chan, Michal Sumbera, A. A. P. Suaide, G. S. Averichev, J. C. Webb, J. Porter, Shengli Huang, Lokesh Kumar, O. V. Rogachevskiy, Catherine Tomkiel, B. Xi, Jaroslav Adam, P. V. Shanmuganathan, V. Prozorova, M. I. Nagy, E. Hoffman, Rafal Sikora, N. K. Pruthi, Y. H. Leung, G. Eppley, Y. F. Wu, Susumu Sato, J. Cheng, Subhash Singha, Andrey Vasiliev, D. Isenhower, J. C. Dunlop, L. Wen, D. Kincses, Y. Li, Niladribihari Sahoo, Tong Liu, Hao Qiu, Ivan Kisel, W. Solyst, S. W. Wissink, D. Neff, T. Tarnowsky, A. S. Nunes, I. Upsal, Zubayer Ahammed, J. B. Singh, X. Liang, J. Pluta, M. Zyzak, C. Perkins, J. Wu, O. Eyser, Z. Z. Xu, X.G. Li, Y. Zhang, Z. J. Zhang, S. Kumar, M. S. Abdallah, T. Ullrich, M. Calderon De La Barca Sanchez, A. I. Hamad, Madan M. Aggarwal, P. Federic, D. Kapukchyan, A. K. Pandey, N. Chankova-Bunzarova, W. Li, M. Csanad, X. Z. Cai, A. A. Derevschikov, Skipper Kagamaster, Rene Bellwied, X. M. Sun, Fuqiang Wang, Y. F. Xu, Xiangming Sun, Janet Elizabeth Seger, C. Fu, I. M. Deppner, Nikita Smirnov, K. Nayak, M. Robotkova, J. Putschke, G. Agakishiev, Y. Yang, Xiaofeng Zhu, Q. Y. Shou, Hua Pei, S. K. Tripathy, Ying Liang, R. E. Tribble, T. G. Dedovich, Jize Zhao, D. Cebra, C. Yang, A. Dhamija, Zhanwen Zhu, G. Wang, M. J. Skoby, Frank Jm Geurts, C. C. Zhang, G. Ponimatkin, R. Pak, A. Ogawa, F. Liu, Miroslav Simko, Dukhishyam Mallick, R. Kunnawalkam Elayavalli, D. Zhang, H. S. Xu, Olga Evdokimov, Barbara Antonina Trzeciak, Y. Lin, Y. Söhngen, T. Galatyuk, S. Esumi, Nilay Shah, C-Q. Li, Wei Xie, Mariusz Przybycien, W. Guryn, R. Lacey, J. D. Nam, I. Aggarwal, P. Parfenov, A. G. Knospe, Li Yi, M. Chevalier, Christina Markert, A. Aparin, H. S. Matis, Maria Zurek, Jongmin Lee, R. Nishitani, R. Ma, R. Seto, Md. Nasim, J. Fedorisin, R. D. Majka, Y. Huang, Xiaoyu Liu, D. N. Svirida, L. K. Kosarzewski, M. D. Harasty, P. Sorensen, Joseph Kwasizur, J. L. Drachenberg, W. W. Jacobs, Yicheng Feng, Y. Shi, N. Schmitz, J. Lauret, M. Shao, G. Van Buren, E. Shahaliev, J. G. Ball Cap, Y. Han, T. Ljubicic, Anju Bhasin, X. H. He, L. V. Nogach, K. Kang, T. Niida, P. Kravtsov, S. S. Shi, M. M. Mondal, E. G. Judd, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, H. Sako, Z. Tu, Jana Bielcikova, A. Lebedev, H. Caines, J. L. Romero, A. Quintero, N. Herrmann, J. M. Nelson, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, Y. He, E. Finch, Y. G. Ma, Jing-Han Chen, F. Videbæk, Sukalyan Chattopadhyay, E. C. Aschenauer, Chitrasen Jena, S. Margetis, X. Dong, Diana Pawlowska, Y. Fisyak, Lin Ma, M. S. Daugherity, H. W. Ke, L. Fulek, B. Pawlik, I. Vassiliev, D. Shen, S. Zhang, Alexander Kiselev, X. Gou, P. Chaloupka, Ting Lin, S. Trentalange, Y. J. Sun, H. Liu, S. Kabana, Benjamin Schweid, T. J. Humanic, A. Hamed, M. Sergeeva, T. Truhlar, B. S. Page, Avishek Chatterjee, D. P. Kikola, B. Stringfellow, T. Shao, R. S. Longacre, M. L. Kabir, K. Kauder, and A. Taranenko
Subjects: Physics, Meson, 010308 nuclear & particles physics, Hadron, Constituent quark, 01 natural sciences, Nuclear physics, 0103 physical sciences, Transverse momentum, 010306 general physics, Anisotropy, Relativistic Heavy Ion Collider, Size dependence, STAR detector
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; 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, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We present systematic measurements of azimuthal anisotropy for strange and multistrange hadrons (Ks0, Λ, Ξ, and ω) and φ mesons at midrapidity (|y|l 1.0) in collisions of U+U nuclei at sNN=193 GeV, recorded by the STAR detector at the Relativistic Heavy Ion Collider. Transverse momentum (pT) dependence of flow coefficients (v2, v3, and v4) is presented for minimum bias collisions and three different centrality intervals. Number of constituent quark scaling of the measured flow coefficients in U+U collisions is discussed. We also present the ratio of vn scaled by the participant eccentricity (ɛn2) to explore system size dependence and collectivity in U+U collisions. The magnitude of v2/ɛ2 is found to be smaller in U+U collisions than that in central Au+Au collisions contradicting naive eccentricity scaling. Furthermore, the ratios between various flow harmonics (v3/v23/2, v4/v24/2) are studied and compared with hydrodynamic and transport model calculations.
Published: 2021

4. Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at s=200 GeV

Author: Muhammad Usman Ashraf, Qi Yang, Sergey Voloshin, Zuojia Wang, Xinyue Ju, Q. H. Xu, C. Racz, H. Z. Huang, V. Verkest, S. Vokal, A. Ewigleben, L. S. Pinsky, J. Porter, E. P. Sichtermann, M. Calderon De La Barca Sanchez, K. Jiang, Y. Wang, K. Yip, J. S. Wang, Audrey Francisco, A. I. Hamad, V. Prozorova, Ivan Kisel, W. Baker, M. Robotkova, N. Raha, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, Jiangyong Jia, Isaac Mooney, D. G. Underwood, Dukhishyam Mallick, Wei Xie, Y. Fisyak, Lin Ma, J. D. Nam, D. A. Morozov, M. S. Abdallah, A. Aparin, T. Ullrich, Joel Anthony Mazer, Zebo Tang, C. C. Zhang, S. He, Anju Bhasin, J. Cheng, L. V. Nogach, X. C. Chen, T. Shao, M. Sergeeva, Z. J. Zhang, D. Tlusty, B. R. Pokhrel, D. Kalinkin, Yunlan Ji, H. S. Xu, G. Wang, A. V. Brandin, N. Schmitz, N. Magdy, Robert Licenik, Anthony Robert Timmins, K. Kang, T. Niida, M. Tokarev, A. Lebedev, Y. F. Xu, F. G. Atetalla, J. Wu, S. Heppelmann, B. J. Summa, R. S. Longacre, J. W. Harris, Roland Laszlo Pinter, C. Perkins, N. S. Lukow, T. Truhlar, K. N. Barish, B. Xi, E. Shahaliev, C. Yang, H. J. Crawford, O. D. Tsai, Niladribihari Sahoo, Tong Liu, S. Harabasz, M. L. Kabir, Y. Söhngen, Vipul Bairathi, M. D. Harasty, D. Kincses, L. Di Carlo, J. K. Adkins, E. C. Aschenauer, R. Fatemi, N. Herrmann, Daniel Nemes, D. N. Svirida, J. B. Singh, S. Kumar, M. I. Nagy, Y. F. Wu, Olga Evdokimov, Barbara Antonina Trzeciak, P. Seyboth, I. Upsal, Irakli Chakaberia, J. Engelage, O. Eyser, P. V. Shanmuganathan, T. Tarnowsky, Zhenyu Chen, X. G. Luo, A. H. Tang, Pengdong Wang, P. Parfenov, Lukas Holub, Bedangadas Mohanty, C. Fu, A. Dhamija, P. Szymanski, T. D. S. Stanislaus, B. Pawlik, D. Shen, E. Loyd, Guannan Xie, P. C. Weidenkaff, K. Gopal, S. Margetis, X. Dong, T. G. Dedovich, G. Nigmatkulov, Xuan Zhang, F. M. Fawzi, B. S. Page, Avishek Chatterjee, D. P. Kikola, D. Kapukchyan, Y. Li, S. Zhang, Z. Chang, H. H. Wieman, Jan Vanek, Leszek Adamczyk, M. J. Skoby, Frank Jm Geurts, Z. Liu, B. Stringfellow, I. Bunzarov, W. Zha, K. Kauder, A. Taranenko, A. K. Pandey, J. M. Landgraf, J. R. Adams, T. Galatyuk, David Stewart, Xiangming Sun, Hanna Paulina Zbroszczyk, P. Sorensen, M. Chevalier, P. Federic, Hua Pei, W. Christie, S. K. Tripathy, Y. Han, Jongmin Lee, D. Chen, S. Lan, Joseph Kwasizur, A. A. Derevschikov, Alexander Kiselev, Sevil Salur, H. Sako, A. G. Knospe, M. Strikhanov, A. S. Nunes, R. Ma, A. Pandav, F. Seck, M. S. Daugherity, W. Guryn, M. Posik, M. Shao, G. Van Buren, Subhash Singha, Andrey Vasiliev, H. W. Ke, X. Gou, Arabinda Behera, L. Fulek, Maria Zurek, R. Lacey, Jana Bielcikova, J. G. Ball Cap, J. L. Romero, Lokesh Kumar, S. S. Shi, Jaroslav Adam, N. Ghimire, X.G. Li, Z. Ye, H. M. Spinka, G. Odyniec, J. Sandweiss, R. Kunnawalkam Elayavalli, Maowu Nie, Z. W. Sweger, T. Ljubicic, Somnath Choudhury, X. H. He, R. Reed, I. G. Alekseev, Y. H. Leung, Y. J. Sun, R. Nishitani, N. K. Pruthi, Chong Kim, Ashik Ikbal Sheikh, Janet Elizabeth Seger, H. Caines, X. Huang, A. Kechechyan, Yicheng Feng, Y. Shi, A. Quintero, J. H. Thomas, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, Y. Yang, G. Eppley, Y. He, S. Kabana, G. Ponimatkin, I. M. Deppner, D. Keane, X. Liang, Nilay Shah, J. M. Nelson, Donald M. Anderson, H. G. Ritter, T. Nonaka, W. J. Llope, C. Zhou, J. Fedorisin, M. A. Lisa, E. Hoffman, Rafal Sikora, Y. G. Ma, Jing-Han Chen, E. Finch, P. Chaloupka, Xiaoyu Liu, J. Pluta, M. Zyzak, F. Liu, Miroslav Simko, F-H. Chang, J. C. Dunlop, L. Wen, Mariusz Przybycien, Alexander Jentsch, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, Ting Lin, Maria Stefaniak, H. Harrison, G. S. Averichev, A. Attri, Rene Bellwied, I. Vassiliev, S. Trentalange, P. Bhagat, H. Liu, Zubayer Ahammed, R. Seto, M. M. Mondal, E. G. Judd, Y. Huang, X. Chu, R. E. Tribble, Jize Zhao, Y. Lin, X. Z. Cai, Peng Liu, X. M. Sun, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Catherine Tomkiel, S. W. Wissink, D. Neff, Y. Zhang, Benjamin Schweid, T. J. Humanic, A. Hamed, Y. Panebratsev, Q. Y. Shou, W. He, Saehanseul Oh, D. Grosnick, D. Isenhower, Z. Z. Xu, Nikita Smirnov, K. Nayak, R. Pak, Y. Yu, R. Witt, J. D. Brandenburg, S. Mioduszewski, Prithwish Tribedy, G. Agakishiev, B. K. Srivastava, D. Cebra, Shengli Huang, Zhanwen Zhu, A. Gibson, L. Didenko, J. M. Butterworth, J. C. Webb, Susumu Sato, Hao Qiu, W. Solyst, F. Videbæk, Sukalyan Chattopadhyay, Chitrasen Jena, Diana Pawlowska, Li Yi, P. Kravtsov, N. Xu, P. Filip, G. D. Westfall, A. Gupta, Zhigang Xiao, T. Huang, Yunpeng Liu, N. G. Minaev, B. Kimelman, J. Rusnak, L. Ruan, T. Todoroki, Jaroslav Bielcik, Y. Hu, O. V. Rogachevskiy, Vitaly Okorokov, Bernd Surrow, M. Csanad, J. Putschke, Xiaofeng Zhu, A. Mukherjee, N. Elsey, Ying Liang, A. Ogawa, W. B. Schmidke, C-Q. Li, C. A. Gagliardi, Christina Markert, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, J. Lauret, Madan M. Aggarwal, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, Fuqiang Wang, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, D. Zhang, S. Esumi, I. Aggarwal, Md. Nasim, R. D. Majka, and J. L. Drachenberg
Subjects: Physics, Particle physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Chatterjee, Jet (particle physics), 01 natural sciences, Asymmetry, Helicity, 0103 physical sciences, Production (computer science), 010306 general physics, media_common, Spin-½
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; 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, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We report high-precision measurements of the longitudinal double-spin asymmetry, ALL, for midrapidity inclusive jet and dijet production in polarized pp collisions at a center-of-mass energy of s=200 GeV. The new inclusive jet data are sensitive to the gluon helicity distribution, Δg(x,Q2), for gluon momentum fractions in the range from x≃0.05 to x≃0.5, while the new dijet data provide further constraints on the x dependence of Δg(x,Q2). The results are in good agreement with previous measurements at s=200 GeV and with recent theoretical evaluations of prior world data. Our new results have better precision and thus strengthen the evidence that Δg(x,Q2) is positive for xg0.05.
Published: 2021

5. 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

6. Flow and interferometry results from Au+Au collisions at sNN=4.5 GeV

Author: F. M. Fawzi, Z. Chang, Sukalyan Chattopadhyay, P. Sorensen, Joseph Kwasizur, S. Lan, F. Seck, J. Rusnak, M. Shao, G. Van Buren, M. Posik, Chitrasen Jena, S. S. Shi, J. K. Adkins, Arabinda Behera, H. M. Spinka, Z. W. Sweger, L. Ruan, Alexander Kiselev, Diana Pawlowska, Z. Ye, Somnath Choudhury, J. M. Nelson, Olga Evdokimov, Barbara Antonina Trzeciak, R. Fatemi, Maowu Nie, Todd Kinghorn, Yunlan Ji, Y. Han, X. Huang, T. Todoroki, Y. G. Ma, Jing-Han Chen, X. Gou, Peng Liu, X. Chu, A. Kechechyan, I. Upsal, W. J. Llope, C. Zhou, Alexander Jentsch, M. Calderon De La Barca Sanchez, A. I. Hamad, A. Attri, P. Bhagat, F. Liu, Miroslav Simko, Mariusz Przybycien, T. Nonaka, Y. Panebratsev, M. S. Daugherity, B. R. Pokhrel, Maria Zurek, H. Sako, J. H. Thomas, Saehanseul Oh, D. Grosnick, Guannan Xie, Xuan Zhang, H. W. Ke, G. Agakishiev, M. Robotkova, Hanna Paulina Zbroszczyk, R. Reed, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Yicheng Feng, Y. Shi, L. Fulek, Dukhishyam Mallick, P. Chaloupka, D. Kincses, A. K. Pandey, Xiangming Sun, Md. Nasim, D. Cebra, Zebo Tang, D. Isenhower, Jana Bielcikova, J. L. Romero, Zhanwen Zhu, Maria Stefaniak, I. Vassiliev, Catherine Tomkiel, S. W. Wissink, D. Neff, Y. Zhang, M. Tokarev, Lukas Kramarik, R. D. Majka, J. L. Drachenberg, Hua Pei, S. K. Tripathy, P. Seyboth, C-Q. Li, N. Ghimire, Z. Z. Xu, Jan Vanek, Sooraj Krishnan Radhakrishnan, Ting Lin, N. Raha, S. Trentalange, Li Yi, Y. Yu, X. Z. Cai, E. P. Sichtermann, Chong Kim, Ashik Ikbal Sheikh, A. Gibson, W. Baker, X. M. Sun, Zhigang Xiao, L. Di Carlo, P. Szymanski, T. Huang, Yunpeng Liu, Anju Bhasin, Y. Li, Christina Markert, Donald M. Anderson, H. G. Ritter, H. Z. Huang, E. Hoffman, Nikita Smirnov, K. Nayak, R. S. Longacre, M. L. Kabir, Leszek Adamczyk, Rafal Sikora, P. Kravtsov, N. Magdy, S. Mioduszewski, Y. He, E. Finch, Lukas Holub, Bedangadas Mohanty, W. Guryn, T. D. S. Stanislaus, N. G. Minaev, Lokesh Kumar, C. Yang, B. Pawlik, J. M. Butterworth, F. G. Atetalla, Jaroslav Adam, E. Loyd, R. Lacey, H. H. Wieman, O. D. Tsai, H. S. Matis, W. He, J. C. Webb, P. Federic, B. Kimelman, D. Shen, N. K. Pruthi, K. Kang, T. Niida, Z. Liu, Y. H. Leung, R. Nishitani, V. Prozorova, Jiangyong Jia, J. D. Brandenburg, X. C. Chen, Prithwish Tribedy, A. S. Nunes, Susumu Sato, L. K. Kosarzewski, B. K. Srivastava, W. W. Jacobs, G. Igo, P. C. Weidenkaff, Y. F. Xu, J. Fedorisin, Hao Qiu, W. Solyst, N. Xu, P. Filip, S. Zhang, Shengli Huang, L. Didenko, K. Gopal, L. Kozyra, X. Liang, J. Lauret, G. Eppley, C. Perkins, K. N. Barish, B. Xi, A. Lebedev, P. Parfenov, Robert Licenik, G. D. Westfall, Anthony Robert Timmins, K. Kauder, A. Taranenko, Isaac Mooney, J. W. Harris, M. I. Nagy, Y. F. Wu, P. V. Shanmuganathan, Y. Söhngen, T. Tarnowsky, Roland Laszlo Pinter, Yevheniia Khyzhniak, J. C. Dunlop, L. Wen, C. Fu, N. S. Lukow, H. J. Crawford, J. Pluta, A. Gupta, M. Zyzak, D. N. Svirida, R. Lednicky, Xiaoyu Liu, Qi Yang, I. G. Alekseev, David Stewart, L. Kochenda, M. A. Lisa, A. Dhamija, H. Liu, Zubayer Ahammed, Z. Tu, Zuojia Wang, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, A. A. Derevschikov, Daniel Nemes, Y. Fisyak, M. S. Abdallah, Q. H. Xu, T. Ullrich, Sevil Salur, M. M. Mondal, Lin Ma, C. E. Flores, E. G. Judd, R. Kunnawalkam Elayavalli, X. G. Luo, A. H. Tang, Pengdong Wang, Muhammad Usman Ashraf, M. J. Skoby, Frank Jm Geurts, T. Galatyuk, Rene Bellwied, D. Kapukchyan, I. Bunzarov, Sergey Voloshin, Xinyue Ju, R. Seto, Y. Huang, A. G. Knospe, Q. Y. Shou, R. E. Tribble, Jize Zhao, Y. J. Sun, Benjamin Schweid, T. J. Humanic, A. Hamed, K. Meehan, R. Pak, K. Jiang, G. Wang, C. C. Zhang, W. Zha, Y. Wang, Y. Lin, S. Kabana, Wei Xie, J. D. Nam, J. R. Adams, M. D. Harasty, T. Shao, M. Sergeeva, A. Aparin, N. Herrmann, D. Keane, H. S. Xu, D. G. Underwood, T. Truhlar, M. Csanad, M. Chevalier, Y. Pandit, N. Schmitz, H. Harrison, E. Shahaliev, Jongmin Lee, J. Putschke, Xiaofeng Zhu, Ying Liang, R. Ma, B. S. Page, J. Cheng, Avishek Chatterjee, A. Ogawa, J. Wu, D. P. Kikola, B. Stringfellow, J. G. Ball Cap, T. Ljubicic, X. H. He, W. Christie, H. Caines, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, A. Quintero, Subhash Singha, Andrey Vasiliev, X.G. Li, E. C. Aschenauer, S. Margetis, Janet Elizabeth Seger, X. Dong, I. M. Deppner, D. Kalinkin, S. Heppelmann, B. J. Summa, S. Harabasz, O. Eyser, F-H. Chang, G. S. Averichev, J. Porter, C. Racz, Ivan Kisel, V. Verkest, S. Vokal, Audrey Francisco, Z. J. Zhang, Joel Anthony Mazer, S. He, D. Tlusty, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, Niladribihari Sahoo, Tong Liu, D. A. Morozov, J. Engelage, G. Nigmatkulov, J. M. Landgraf, D. Chen, M. Strikhanov, G. Odyniec, J. Sandweiss, A. V. Brandin, Vipul Bairathi, Irakli Chakaberia, Zhenyu Chen, Y. Yang, Jaroslav Bielcik, G. Ponimatkin, Y. Hu, O. V. Rogachevskiy, Nilay Shah, Vitaly Okorokov, Bernd Surrow, A. Ewigleben, L. S. Pinsky, K. Yip, J. S. Wang, A. Mukherjee, N. Elsey, W. B. Schmidke, C. A. Gagliardi, E. Duckworth, Madan M. Aggarwal, Fuqiang Wang, D. Zhang, S. Esumi, I. Aggarwal, J. Y. Zhang, L. V. Nogach, A. Pandav, J. B. Singh, J. M. Campbell, S. Kumar, T. G. Dedovich, and F. Videbæk
Subjects: Physics, Time projection chamber, Proton, 010308 nuclear & particles physics, Hadron, Elliptic flow, Constituent quark, 01 natural sciences, law.invention, Nuclear physics, Pion, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider, Relativistic Heavy Ion Collider
Abstract: The beam energy scan (BES) program at the BNL Relativistic Heavy Ion Collider (RHIC) was extended to energies below sNN=7.7 GeV in 2015 by successful implementation of the fixed-target mode of operation in the STAR (Solenoidal Tracker At RHIC) experiment. In this mode, ions circulate in one ring of the collider and interact with a stationary target at the entrance of the STAR time projection chamber. The first results for Au+Au collisions at sNN=4.5 GeV are presented, demonstrating good performance of all the relevant detector subsystems in fixed-target mode. Results presented here include directed and elliptic flow of identified hadrons, and radii from pion femtoscopy. The latter, together with recent HADES results, reveal a long-sought peak structure that may be caused by the system evolving through a first-order phase transition from quark-gluon plasma to the hadronic phase. Directed and elliptic flow for pions are presented for the first time at this beam energy. Pion and proton elliptic flow show behavior which hints at constituent quark scaling, and demonstrate that a definitive conclusion will be achievable using the full statistics of the ongoing second phase of BES (BES-II). In particular, BES-II to date has recorded fixed-target data sets with two orders of magnitude more events at each of nine energies between sNN=3.0 and 7.7 GeV.
Published: 2021

7. 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

8. 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

9. Measurement of open-charm hadron production in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV with the STAR experiment

Author: Robert Licenik
Subjects: Physics, Particle physics, Meson, Star (game theory), Nuclear Theory, High Energy Physics::Phenomenology, Hadron, Plasma, Hadronization, Magnetic field, Charm quark, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment
Abstract: In ultrarelativistic heavy-ion collisions at RHIC energies, charm quarks are predominantly produced in initial hard partonic scatterings. Therefore, they experience the entire evolution of the hot and dense medium produced in these collisions, known as the Quark-Gluon Plasma (QGP). The STAR experiment is capable of studying the production of charm quarks and their interactions with the QGP through the reconstruction of the hadronic decays of D$^0$, D$^\pm$, D$^\pm_\textrm{s}$ and $\Lambda^\pm_\textrm{c}$ hadrons. These measurements are possible thanks to the excellent track pointing resolution of the Heavy Flavor Tracker (HFT). In these proceedings, we present recent results on open-charm hadron measurements in Au+Au collisions at $\sqrt{s_\textrm{NN}}=200$ GeV. In particular, we discuss the nuclear modification factors of D$^\pm$ and D$^0$ mesons, which provide insights into the energy loss mechanism of charm quarks in the QGP, and the D$^0$ elliptic and triangular flow coefficients, that probe the charm quark transport in the QGP. We also present the D$^\pm_\textrm{s}$/D$^0$ and $\Lambda^\pm_\textrm{c}$/D$^0$ yield ratios as a function of transverse momentum and collision centrality that help us better understand the charm quark hadronization process in heavy-ion collisions. Finally, we show the rapidity-odd directed flow of D$^0$ mesons, which is sensitive to the initial tilt of the QGP bulk and can also probe the effects of the initial magnetic field in heavy-ion collisions.
Published: 2020

10. 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

11. Measurement of inclusive jet production in Au+Au collisions at $\sqrt{s_\textrm{NN}}$ = 200 GeV by the STAR experiment

Author: Robert Licenik
Subjects: Physics, Jet (fluid), Large Hadron Collider, Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Coincidence, Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Yield (chemistry), Magnitude (astronomy), Production (computer science), High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: The STAR Collaboration reports the measurement of inclusive jet production in central (0-10%) and peripheral (60-80%) Au+Au collisions at $\sqrt{s_\textrm{NN}}$ = 200 GeV, using both charged-particle and fully-reconstructed jets. Jet reconstruction is carried out using the anti-$k_\textrm{T}$ algorithm with resolution parameters $R$ = 0.2, 0.3 and 0.4. Yield suppression of charged-particle jets is observed for central Au+Au collisions relative to both peripheral Au+Au collisions and a vacuum baseline utilizing PYTHIA 6 simulations. The magnitude of the suppression is similar to that measured at the LHC and can be described by theoretical calculations. No evidence of significant medium-induced jet broadening is observed, based on comparison of jet spectra at varying $R$. The yield suppression, when expressed as the jet transverse momentum shift corresponding to energy loss, is consistent in magnitude with coincidence measurements at RHIC based on direct-photon and hadron triggers. There is an indication of larger energy loss observed at the LHC., Hard Probes 2020 proceedings, submitted to Proceedings of Science. 4 pages, 4 figures
Published: 2020

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

20. 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

21. 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

22. 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

23. 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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24. 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

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24 results on '"Robert Licenik"'

1. Invariant jet mass measurements in pp collisions at s=200 GeV at RHIC

2. Cumulants and correlation functions of net-proton, proton, and antiproton multiplicity distributions in Au+Au collisions at energies available at the BNL Relativistic Heavy Ion Collider

3. Azimuthal anisotropy measurements of strange and multistrange hadrons in U+U collisions at sNN=193 GeV at the BNL Relativistic Heavy Ion Collider

4. Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at s=200 GeV

5. 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

6. Flow and interferometry results from Au+Au collisions at sNN=4.5 GeV

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

8. Measurement of inclusive J/ψ polarization in p+p collisions at s=200 GeV by the STAR experiment

9. Measurement of open-charm hadron production in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV with the STAR experiment

10. Strange hadron production in Au+Au collisions at sNN=7.7 , 11.5, 19.6, 27, and 39 GeV

11. Measurement of inclusive jet production in Au+Au collisions at $\sqrt{s_\textrm{NN}}$ = 200 GeV by the STAR experiment

12. Beam energy dependence of net- Λ fluctuations measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider

13. First Measurement of Λc Baryon Production in Au+Au Collisions at sNN=200 GeV

14. Underlying event measurements in p+p collisions at s=200 GeV at RHIC

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

16. Beam-energy dependence of identified two-particle angular correlations in sNN=7.7–200 GeV Au+Au collisions

17. 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

18. Polarization of Λ ( Λ¯ ) Hyperons along the Beam Direction in Au+Au Collisions at sNN=200 GeV

19. 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

20. Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s=510 GeV

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

22. Measurement of the longitudinal spin asymmetries for weak boson production in proton-proton collisions at s=510 GeV

23. Methods for a blind analysis of isobar data collected by the STAR collaboration

24. Beam energy dependence of (anti-)deuteron production in Au + Au collisions at the BNL Relativistic Heavy Ion Collider

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24 results on '"Robert Licenik"'

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