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1. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at GeV * *Supported in part by the Offices of NP and HEP within the U.S. DOE Office of Science, the U.S. NSF, the Sloan Foundation, the DFG cluster of excellence ‘Origin and Structure of the Universe’ of Germany, CNRS/IN2P3, STFC and EPSRC of the United Kingdom, FAPESP CNPq of Brazil, Ministry of Ed. and Sci. of the Russian Federation, NNSFC, CAS, MoST, and MoE of China, GA and MSMT of the Czech Republic, FOM and NWO of the Netherlands, DAE, DST, and CSIR of India, Polish Ministry of Sci. and Higher Ed., Korea Research Foundation, Ministry of Sci., Ed. and Sports of the Rep. Of Croatia, Russian Ministry of Sci. and Tech, and RosAtom of Russia

Author: Agakishiev, H, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Alford, J, Anderson, BD, Anson, CD, Arkhipkin, D, Averichev, GS, Balewski, J, Beavis, DR, Behera, NK, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Borowski, W, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Brovko, SG, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, de la Barca Sánchez, M Calderón, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Dash, S, Leyva, A Davila, De Silva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, de Souza, R Derradi, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, YN, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, SM, Gupta, A, Guryn, W, Haag, B, Hajkova, O, and Hamed, A
Subjects: Particle and Plasma Physics, nucl-th, anisotropic flow background, Molecular, Nuclear, event plane, Nuclear Experiment, dihadron correlations, nucl-ex, jet-medium interactions, Atomic, Nuclear & Particles Physics, relativistic heavy ion collisions
Abstract: Dihadron azimuthal correlations containing a high transverse momentum (pT) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20%-60%) Au+Au collisions at GeV as a function of the trigger particle's azimuthal angle relative to the event plane, . The azimuthal correlation is studied as a function of both the trigger and associated particle . The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with , with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity correlation) appears to drop with increasing while the jet-like component remains approximately constant. The correlation functions are further studied with the subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the -dependence of the ridge or the away-side double-peak structure. The dropping ridge with could be attributed to a -dependent elliptic anisotropy; however, the physics mechanism of the ridge remains an open question. Even with a -dependent elliptic flow, the away-side correlation structure is robust. These results, with extensive systematic studies of the dihadron correlations as a function of , trigger and associated particle , and the pseudo-rapidity range , should provide stringent inputs to help understand the underlying physics mechanisms of jet-medium interactions in high energy nuclear collisions.
Published: 2021

2. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at √sNN= 200 GeV

Author: Agakishiev, H, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Alford, J, Anderson, BD, Anson, CD, Arkhipkin, D, Averichev, GS, Balewski, J, Beavis, DR, Behera, NK, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Borowski, W, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Brovko, SG, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, Calderón De La Barca Sánchez, M, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Dash, S, Davila Leyva, A, De Silva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, Derradi De Souza, R, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, YN, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, SM, Gupta, A, Guryn, W, Haag, B, Hajkova, O, and Hamed, A
Subjects: Particle and Plasma Physics, nucl-th, anisotropic flow background, Molecular, Nuclear, event plane, Nuclear Experiment, dihadron correlations, nucl-ex, jet-medium interactions, Nuclear & Particles Physics, Atomic, relativistic heavy ion collisions
Abstract: Dihadron azimuthal correlations containing a high transverse momentum (pT) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20%-60%) Au+Au collisions at GeV as a function of the trigger particle's azimuthal angle relative to the event plane, . The azimuthal correlation is studied as a function of both the trigger and associated particle . The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with , with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity correlation) appears to drop with increasing while the jet-like component remains approximately constant. The correlation functions are further studied with the subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the -dependence of the ridge or the away-side double-peak structure. The dropping ridge with could be attributed to a -dependent elliptic anisotropy; however, the physics mechanism of the ridge remains an open question. Even with a -dependent elliptic flow, the away-side correlation structure is robust. These results, with extensive systematic studies of the dihadron correlations as a function of , trigger and associated particle , and the pseudo-rapidity range , should provide stringent inputs to help understand the underlying physics mechanisms of jet-medium interactions in high energy nuclear collisions.
Published: 2021

3. STAR Collaboration

Author: Abdelwahab, NM, Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Alford, J, Anson, CD, Aparin, A, Arkhipkin, D, Aschenauer, EC, Averichev, GS, Banerjee, A, Beavis, DR, Bellwied, R, Bhasin, A, Bhati, AK, Bhattarai, P, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Borowski, W, Bouchet, J, Brandin, AV, Brovko, SG, Bültmann, S, Bunzarov, I, Burton, TP, Butterworth, J, Caines, H, Calderón de la Barca Sánchez, M, Campbell, JM, Cebra, D, Cendejas, R, Cervantes, MC, Chaloupka, P, Chang, Z, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Christie, W, Chwastowski, J, Codrington, MJM, Contin, G, Cramer, JG, Crawford, HJ, Cui, X, Das, S, Davila Leyva, A, De Silva, LC, Debbe, RR, Dedovich, TG, Deng, J, Derevschikov, AA, Derradi de Souza, R, di Ruzza, B, Didenko, L, Dilks, C, Ding, F, Djawotho, P, Dong, X, Drachenberg, JL, Draper, JE, Du, CM, Dunkelberger, LE, Dunlop, JC, Efimov, LG, Engelage, J, Engle, KS, Eppley, G, Eun, L, Evdokimov, O, Eyser, O, Fatemi, R, Fazio, S, Fedorisin, J, Filip, P, Fisyak, Y, Flores, CE, Gagliardi, CA, Gangadharan, DR, Garand, D, Geurts, F, Gibson, A, Girard, M, Gliske, S, Greiner, L, Grosnick, D, Gunarathne, DS, Guo, Y, Gupta, A, Gupta, S, Guryn, W, and Haag, B
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, Atomic, Nuclear & Particles Physics, Astronomical and Space Sciences
Published: 2014
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4. Energy dependence of moments of net-proton multiplicity distributions at RHIC

Author: ADAMCZYK, L, ADKINS, JK, AGAKISHIEV, G, AGGARWAL, MM, AHAMMED, Z, ALEKSEEV, I, ALFORD, J, ANSON, CD, APARIN, A, ARKHIPKIN, D, ASCHENAUER, EC, AVERICHEV, GS, BALEWSKI, J, BANERJEE, A, BAMOVSKA, Z, BEAVIS, DR, BELLWIED, R, BHASIN, A, BHATI, AK, BHATTARAI, P, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BORDYUZHIN, IG, BOROWSKI, W, BOUCHET, J, BRANDIN, AV, BROVKO, SG, BULTMANN, S, BUNZAROV, I, BURTON, TP, BUTTERWORTH, J, CAINES, H, SANCHEZ, MCD, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHALOUPKA, P, CHANG, Z, CHATTOPADHYAY, S, CHEN, HE, CHEN, JH, CHEN, L, CHENG, J, CHEMEY, M, CHIKANIAN, A, CHRISTIE, W, CHWASTOWSKI, J, CODRINGTON, MJM, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, CUI, X, DAS, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DENG, J, DEREVSCHIKOV, AA, DE SOUZA, RD, DHAMIJA, S, DI RUZZA, B, DIDENKO, L, DILKS, C, DING, E, DJAWOTHO, P, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, CM, DUNKELBERGER, LE, DUNLOP, JC, EFMUNOV, LG, ENGELAGE, J, ENGLE, KS, EPPLEY, G, EUN, L, EVDOKIMOV, O, FATEMI, R, FAZIO, S, FEDORISIN, J, FILIP, P, FINCH, E, FISYAK, Y, FLORES, CE, GAGLIARDI, CA, GANGADHARAN, DR, GARAND, D, GEURTS, E, GIBSON, A, GIRARD, M, GLISKE, S, GROSNICK, D, GUO, Y, GUPTA, A, GUPTA, S, GURYN, W, HAAG, B, HAJKOVA, O, HAMED, A, HAN, LX, HAQUE, R, HARRIS, JW, HAYS-WEHLE, JP, HEPPELMANN, S, HIRSCH, A, HOFFMANN, GW, HOFMAN, DJ, HORVAT, S, HUANG, B, HUANG, HZ, HUCK, P, HUMANIC, TJ, IGO, G, JACOBS, WW, JANG, H, JUDD, EG, KABANA, S, KALINKIN, D, KANG, K, KAUDER, K, KE, HW, KEANE, D, KECHECHYAN, A, KESICH, A, KHAN, ZH, KIKOLA, DP, KISEL, I, KISIEL, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, KORALT, I, KORSCH, W, KOTCHENDA, L, KRAVTSOV, P, KRUEGER, K, KULAKOV, I, KUMAR, L, KYCIA, RA, LAMONT, MAC, LANDGRAF, JM, LANDRY, KD, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, C, LI, W, LI, X, LI, Y, LI, ZM, LIMA, LM, LISA, MA, LIU, F, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LUO, X, MA, GL, MA, YG, DON, DMMDM, MAHAPATRA, DP, MAJKA, R, MARGETIS, S, MARKERT, C, MASUI, H, MATIS, HS, MCDONALD, D, MCSHANE, TS, MINAEV, NG, MIODUSZEWSKI, S, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, MUSTAFA, MK, NANDI, BK, NASIM, M, NAYAK, TK, NELSON, JM, NOGACH, LV, NOH, SY, NOVAK, J, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OH, K, OHLSON, A, OKOROKOV, V, OLDAG, EW, OLIVEIRA, RAN, PACHR, M, PAGE, BS, PAL, SK, PAN, YX, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PAWLIK, B, PEI, H, PERKINS, C, PERYT, W, PETERSON, A, PILE, P, PLANINIC, M, PLUTA, J, PLYKU, D, POLJAK, N, PORTER, J, POSKANZER, AM, PRUTHI, NK, PRZYBYCIEN, M, PUJAHARI, PR, PUTSCHKE, J, QIU, H, QUINTERO, A, RAMACHANDRAN, S, RANIWALA, R, RANIWALA, S, RAY, RL, RILEY, CK, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSS, JF, ROY, A, RUAN, L, RUSNAK, J, SAHOO, NR, SAHU, PK, SAKREJDA, I, SALUR, S, SANDACZ, A, SANDWEISS, J, SANGALINE, E, SARKAR, A, SCHAMBACH, J, SCHARENBERG, RP, SCHMAH, AM, SCHMIDKE, WB, SCHMITZ, N, SEGER, J, SEYBOTH, P, SHAH, N, SHAHALIEV, E, SHANMUGANATHAN, PV, SHAO, M, SHARMA, B, SHEN, WQ, SHI, SS, SHOU, QY, SICHTERMANN, EP, SINGARAJU, RN, SKOBY, MJ, SMIMOV, D, SMIMOV, N, SOLANKI, D, SORENSEN, P, DESOUZA, UG, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUMBERA, M, SUN, X, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TLUSTY, D, TOKAREV, M, TRENTALANGE, S, TRIBBLE, RE, TRIBEDY, P, TRZECIAK, BA, TSAI, OD, TUMAU, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, VERTESI, R, VIDEBAEK, E, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, VOSSEN, A, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, WANG, JS, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WIEMAN, H, WISSINK, SW, WITT, R, WU, YE, XIAO, Z, XIE, W, XIN, K, XU, H, XU, N, XU, QH, XU, Y, XU, Z, YAN, W, YANG, C, YANG, Y, YE, Z, YEPES, P, YI, L, YIP, K, YOO, IK, ZAWISZA, Y, ZBROSZCZYK, H, ZHA, W, ZHANG, JB, ZHANG, S, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, F, ZHAO, J, ZHONG, C, ZHU, X, ZHU, YH, ZOULKAMEEVA, Y, and ZYZAK, M
Subjects: Particle physics, COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS, Nuclear Theory, Hadron, FOS: Physical sciences, General Physics and Astronomy, Critical-Point, High Energy Physics - Experiment, Nuclear Theory (nucl-th), Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Lattice, Qcd Phase-Diagram, multiplicity, Fluctuations, Quantum Chromodynamics, Collisions, Nuclear Experiment (nucl-ex), Multiplicity (chemistry), Nuclear Experiment, Quantum chromodynamics, Physics, RHIC, High Energy Physics - Lattice (hep-lat), Sigma, Collaboration, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, High Energy Physics - Phenomenology, Antiproton, Quark–gluon plasma, Transition, Perspective, Quark-Gluon Plasma, High Energy Physics::Experiment, Baryon number, energy, Relativistic Heavy Ion Collider, Model
Abstract: We report the beam energy (\sqrt s_{NN} = 7.7 - 200 GeV) and collision centrality dependence of the mean (M), standard deviation (\sigma), skewness (S), and kurtosis (\kappa) of the net-proton multiplicity distributions in Au+Au collisions. The measurements are carried out by the STAR experiment at midrapidity (|y| < 0.5) and within the transverse momentum range 0.4 < pT < 0.8 GeV/c in the first phase of the Beam Energy Scan program at the Relativistic Heavy Ion Collider. These measurements are important for understanding the Quantum Chromodynamic (QCD) phase diagram. The products of the moments, S\sigma and \kappa\sigma^{2}, are sensitive to the correlation length of the hot and dense medium created in the collisions and are related to the ratios of baryon number susceptibilities of corresponding orders. The products of moments are found to have values significantly below the Skellam expectation and close to expectations based on independent proton and anti-proton production. The measurements are compared to a transport model calculation to understand the effect of acceptance and baryon number conservation, and also to a hadron resonance gas model., Comment: 7 pages and 4 figures
Published: 2014
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5. Elliptic flow of identified hadrons in Au+Au collisions at sNN=7.7–62.4 GeV

Author: Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Alford, J, Anson, CD, Aparin, A, Arkhipkin, D, Aschenauer, E, Averichev, GS, Balewski, J, Banerjee, A, Barnovska, Z, Beavis, DR, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bhattarai, P, Bichsel, H, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Borowski, W, Bouchet, J, Brandin, AV, Brovko, SG, Bruna, E, Bültmann, S, Bunzarov, I, Burton, TP, Butterworth, J, Cai, XZ, Caines, H, de la Barca Sánchez, M Calderón, Cebra, D, Cendejas, R, Cervantes, MC, Chaloupka, P, Chang, Z, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Christie, W, Chung, P, Chwastowski, J, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Cui, X, Das, S, Leyva, A Davila, De Silva, LC, Debbe, RR, Dedovich, TG, Deng, J, de Souza, R Derradi, Dhamija, S, di Ruzza, B, Didenko, L, Ding, F, Dion, A, Djawotho, P, Dong, X, Drachenberg, JL, Draper, JE, Du, CM, Dunkelberger, LE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Eppley, G, Eun, L, Evdokimov, O, Fatemi, R, Fazio, S, Fedorisin, J, Fersch, RG, Filip, P, Finch, E, Fisyak, Y, Flores, E, Gagliardi, CA, Gangadharan, DR, Garand, D, Geurts, F, Gibson, A, Gliske, S, and Grebenyuk, OG
Subjects: Particle and Plasma Physics, Molecular, High Energy Physics::Experiment, Nuclear, Nuclear Experiment, nucl-ex, Atomic, Nuclear & Particles Physics
Abstract: Measurements of the elliptic flow, v2, of identified hadrons (π±, K±, Ks0, p, p̄, φ, Λ, Λ̄, Ξ-, Ξ̄+, Ω-, Ω̄+) in Au+Au collisions at √sNN=7.7, 11.5, 19.6, 27, 39, and 62.4 GeV are presented. The measurements were done at midrapidity using the time-projection chamber and the time-of-flight detectors of the Solenoidal Tracker at RHIC experiment during the beam-energy scan program at Relativistic Heavy Ion Collider. A significant difference in the v2 values for particles and the corresponding antiparticles was observed at all transverse momenta for the first time. The difference increases with decreasing center-of-mass energy, √s NN (or increasing baryon chemical potential, μB), and is larger for the baryons as compared to the mesons. This implies that particles and antiparticles are no longer consistent with the universal number-of-constituent quark (NCQ) scaling of v2 that was observed at √sNN=200 GeV. However, for the selected group of particles (π+, K+, Ks0, p, Λ, Ξ-, Ω-) NCQ scaling at (mT-m0)/n q>0.4 GeV/c2 is not violated within ±10%. The v2 values for φ mesons at 7.7 and 11.5 GeV are approximately two standard deviations from the trend defined by the other hadrons at the highest measured pT values. © 2013 American Physical Society.
Published: 2013

6. Fluctuations of charge separation perpendicular to the event plane and local parity violation in sqrt(sNN)=200 GeV Au+Au collisions at RHIC

Author: Collaboration, STAR, Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Alford, J, Anson, CD, Aparin, A, Arkhipkin, D, Aschenauer, E, Averichev, GS, Balewski, J, Banerjee, A, Barnovska, Z, Beavis, DR, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bhattarai, Bichsel, H, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Borowski, W, Bouchet, J, Brandin, AV, Brovko, SG, Bruna, E, Bültmann, S, Bunzarov, I, Burton, TP, Butterworth, J, Caines, H, Sánchez, M Calderón de la Barca, Cebra, D, Cendejas, R, Cervantes, MC, Chaloupka, P, Chang, Z, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Christie, W, Chung, P, Chwastowski, J, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Cui, X, Das, S, Leyva, A Davila, Silva, LC De, Debbe, RR, Dedovich, TG, Deng, J, Souza, R Derradi de, Dhamija, S, Ruzza, B di, Didenko, L, Dilks, Ding, F, Dion, A, Djawotho, P, Dong, X, Drachenberg, JL, Draper, JE, Du, CM, Dunkelberger, LE, Dunlop, JC, Efimov, LG, Elnimr, M, Engelage, J, Engle, KS, Eppley, G, Eun, L, Evdokimov, O, Fatemi, R, Fazio, S, Fedorisin, J, Fersch, RG, Filip, P, Finch, E, Fisyak, Y, Flores, CE, Gagliardi, CA, Gangadharan, DR, Garand, D, Geurts, F, and Gibson, A
Subjects: nucl-ex
Abstract: Previous experimental results based on data (15 million events) collected by the STAR detector at RHIC suggest event-by-event charge separation fluctuations perpendicular to the event plane in non-central heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high statistics 200 GeV Au+Au collisions data set (57 million events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same and opposite charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion.
Published: 2013

7. Measurement of the Bottom Quark Contribution to Nonphotonic Electron Production in p plus p Collisions at root s=200 GeV

Author: AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ALEKSEEV, I, ALFORD, J, ANDERSON, BD, ANSON, D, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, SAKREJDA, I, JONES, PG, JOSEPH, J, JUDD, EG, UNDERWOOD, DG, ZHOU, W, BIELCIKOVA, J, KABANA, S, BELLWIED, R, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, SAKUMA, T, KEANE, D, KECHECHYAN, A, ZHU, X, MA, GL, KETTLER, D, KIKOLA, DP, MATULENKO, YA, KIRYLUK, J, KISIEL, A, BETANCOURT, MJ, KIZKA, V, KLEIN, SR, SALUR, S, ZHU, YH, KNOSPE, AG, RAY, RL, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, MCDONALD, D, KORALT, I, KOROLEVA, L, KORSCH, W, ZOULKARNEEV, R, BETTS, RR, BRIDGEMAN, A, CAINES, H, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, MCSHANE, TS, ZOULKARNEEVA, Y, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, VAN BUREN, G, SANDWEISS, J, LAPOINTE, S, BHASIN, A, LAURET, J, LEBEDEV, A, LEDNICKY, R, MANGOTRA, LK, LEE, CH, LEE, JH, MESCHANIN, A, LEIGHT, W, VAN LEEUWEN, M, LEVINE, MJ, SANGALINE, E, LI, C, LI, L, LI, N, CHAJECKI, Z, BHATI, AK, LI, W, LI, X, LI, Y, VAN NIEUWENHUIZEN, G, MILNER, R, LI, ZM, LJUBICIC, T, LIN, G, CHALOUPKA, P, LIN, XY, LINDENBAUM, SJ, LISA, MA, LIU, F, BICHSEL, H, LIU, H, VANFOSSEN, JA, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, CHATTOPADHYAY, S, HEINZ, M, MITROVSKI, MK, GUPTA, A, MOHANTY, B, BIRITZ, B, MONDAL, MM, MOROZOV, B, VARMA, R, MOROZOV, DA, MUNHOZ, MG, ROSE, A, NANDI, BK, NATTRASS, C, SCHAMBACH, J, NAYAK, TK, NELSON, JM, GURYN, W, NETRAKANTI, PK, NG, MJ, VASCONCELOS, GMS, BLAND, LC, TRAINOR, TA, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, SCHARENBERG, RP, OKOROKOV, V, OLDAG, EW, OLSON, D, HAAG, B, HOFMAN, DJ, IGO, G, PACHR, M, PAGE, BS, PAL, SK, BONNER, BE, PANDIT, Y, PANEBRATSEV, Y, SCHMITZ, N, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, CHEN, HF, VASILIEV, AN, PERKINS, C, HAMED, A, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, BOUCHET, J, SCHUSTER, TR, PLOSKON, MA, CHEN, JH, PLUTA, J, VIDEBAEK, F, PLYKU, D, POLJAK, N, POSKANZER, AM, HAN, LX, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, CHEN, JY, SEELE, J, PRUTHI, NK, REDWINE, R, BRAIDOT, E, PUJAHARI, PR, PUTSCHKE, J, QIU, H, RANIWALA, R, HARRIS, JW, RANIWALA, S, CHENG, J, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, BIELCIK, J, BRUNA, E, LLOPE, WJ, SHAHALIEV, E, BAUMGART, S, SHAO, M, SHARMA, M, CHERNEY, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, VIYOGI, YP, SKOBY, MJ, SMIRNOV, N, LONGACRE, RS, SORENSEN, P, BUELTMANN, S, CHIKANIAN, A, HEPPELMANN, S, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, VOKAL, S, STASZAK, D, STEVENS, JR, STOCK, R, LOVE, WA, MANWEILER, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, HIRSCH, A, BUNZAROV, I, SUAREZ, MC, SANCHEZ, MCD, SUBBA, NL, SUMBERA, M, SUN, XM, CHOI, KE, SUN, Y, LU, Y, SUN, Z, SURROW, B, SVIRIDA, DN, SYMONS, TJM, HJORT, E, VOLOSHIN, SA, DE TOLEDO, AS, BURTON, TP, CHRISTIE, W, TAKAHASHI, J, TANG, AH, TANG, Z, LUKASHOV, EV, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, WADA, M, TIAN, J, TRAM, VN, HOFFMAN, AM, TIMMINS, AR, TIMOSHENKO, S, CAI, XZ, TLUSTY, D, LUO, X, TOKAREV, M, WALKER, M, WANG, F, WANG, G, HAYS-WEHLE, JP, HUANG, B, REED, R, WANG, H, GROSNICK, D, WANG, JS, WANG, Q, WANG, XL, WANG, Y, CATU, O, WEBB, G, CHUNG, P, WEBB, JC, WESTFALL, GD, RITTER, HG, WHITTEN, C, HUANG, HZ, MA, YG, WIEMAN, H, WISSINK, SW, WITT, R, WU, YF, CLARKE, RF, XIE, W, XU, H, CEBRA, D, ROBERTS, JB, XU, N, XU, QH, XU, W, MAHAPATRA, DP, HUMANIC, TJ, XU, Y, JACOBS, P, XU, Z, XUE, L, YANG, Y, YEPES, P, BRANDIN, AV, YIP, K, YOO, IK, CENDEJAS, R, YUE, Q, MAJKA, R, CODRINGTON, MJM, ZAWISZA, M, HUO, L, ZBROSZCZYK, H, ZHAN, W, ZHANG, JB, ROGACHEVSKIY, OV, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, CORLISS, R, ZHANG, ZP, MALL, OI, CERVANTES, MC, ZHAO, J, BEAVIS, DR, ZHONG, C, ROMERO, JL, ZHOU, J, CRAMER, JG, CRAWFORD, HJ, DAS, D, MARGETIS, S, TRENTALANGE, S, DASH, S, LIU, J, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, JACOBS, WW, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, TRIBBLE, RE, DJAWOTHO, P, MARKERT, C, ROY, C, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DUNLOP, JC, MAZUMDAR, MRD, JENA, C, TSAI, OD, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, RUAN, L, MASUI, H, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, HOFFMANN, GW, EVDOKIMOV, O, FACHINI, P, JIN, F, FATEMI, R, SAHOO, R, FEDORISIN, J, MATIS, HS, FERSCH, RG, FILIP, P, FINCH, E, ULERY, J, FINE, V, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GANTI, MS, SAKAI, S, JONES, CL, GARCIA-SOLIS, EJ, GUERTIN, SM, GEROMITSOS, A, ULLRICH, T, and GEURTS, F
Subjects: High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment, Tomography
Abstract: The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at root s = 200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of p(T) >= 5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high p(T).
Published: 2010

8. An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement

Author: Collaboration, STAR, Aggarwal, MM, Ahammed, Z, Alakhverdyants, AV, Alekseev, I, Anderson, BD, Arkhipkin, D, Averichev, GS, Balewski, J, Barnby, LS, Baumgart, S, Beavis, DR, Bellwied, R, Betancourt, MJ, Betts, RR, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Bonner, BE, Bouchet, J, Braidot, E, Brandin, AV, Bridgeman, A, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, TP, Cai, XZ, Caines, H, CalderóndelaBarcaSánchez, M, Catu, O, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Chen, JY, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, P, Clarke, RF, Codrington, MJM, Corliss, R, Cramer, JG, Crawford, HJ, Das, D, Dash, S, DavilaLeyva, A, DeSilva, LC, Debbe, RR, Dedovich, TG, Derevschikov, AA, DerradideSouza, R, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, DuttaMazumdar, MR, Efimov, LG, Elhalhuli, E, Elnimr, M, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Eun, L, Evdokimov, O, Fachini, P, Fatemi, R, Fedorisin, J, Fersch, RG, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gangadharan, DR, Ganti, MS, Garcia, EJ, Solis, Geromitsos, A, Geurts, F, Ghazikhanian, V, Ghosh, P, Gorbunov, YN, Gordon, A, and Grebenyuk, O
Subjects: High Energy Physics::Experiment, nucl-ex
Abstract: The QCD phase diagram lies at the heart of what the RHIC Physics Program is all about. While RHIC has been operating very successfully at or close to its maximum energy for almost a decade, it has become clear that this collider can also be operated at lower energies down to 5 GeV without extensive upgrades. An exploration of the full region of beam energies available at the RHIC facility is imperative. The STAR detector, due to its large uniform acceptance and excellent particle identification capabilities, is uniquely positioned to carry out this program in depth and detail. The first exploratory beam energy scan (BES) run at RHIC took place in 2010 (Run 10), since several STAR upgrades, most importantly a full barrel Time of Flight detector, are now completed which add new capabilities important for the interesting physics at BES energies. In this document we discuss current proposed measurements, with estimations of the accuracy of the measurements given an assumed event count at each beam energy.
Published: 2010

9. gamma cross section in p plus p collisions at root s=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARNBY, LS, BAUMGART, S, BEAVIS, DR, GORDON, A, GREBENYUK, O, JACOBS, WW, JAKL, P, JENA, C, SAKUMA, T, JIN, F, BETTS, RR, JONES, CL, VAN LEEUWEN, M, ZOULKARNEEV, R, BLAND, LC, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, SALUR, S, KAPITAN, J, KAUDER, K, ZOULKARNEEVA, Y, MA, GL, KEANE, D, BHASIN, A, MATULENKO, YA, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, SANDWEISS, J, CHATTOPADHYAY, S, KNOSPE, AG, REED, R, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KONZER, J, MCDONALD, D, BHATI, AK, KOPYTINE, M, KORALT, I, CHEN, HF, KORSCH, W, BUELTMANN, S, CATU, O, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, MCSHANE, TS, CHEN, JH, KURNADI, P, BICHSEL, H, LAMONT, MAC, VAN NIEUWENHUIZEN, G, SANGALINE, E, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, MANGOTRA, LK, LEE, CH, LEE, JH, MESCHANIN, A, LEIGHT, W, VANFOSSEN, JA, LEVINE, MJ, SCHAMBACH, J, BIELCIK, J, LI, C, LI, L, CHEN, JY, LI, N, LI, W, LI, X, LI, Y, VARMA, R, MILNER, R, LI, Z, LIU, H, LIN, G, CHENG, J, LINDENBAUM, SJ, BIELCIKOVA, J, LISA, MA, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, VASCONCELOS, GMS, MITROVSKI, MK, GUERTIN, SM, MOHANTY, B, CHERNEY, M, HAN, LX, BONNER, BE, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, VASILIEV, AN, NAYAK, TK, NELSON, JM, ROY, C, NETRAKANTI, PK, GUPTA, A, SCHARENBERG, RP, NG, MJ, NOGACH, LV, BOUCHET, J, NURUSHEV, SB, ODYNIEC, G, VIDEBAEK, F, OGAWA, A, TRENTALANGE, S, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, SCHMITZ, N, GUPTA, N, PAGE, BS, PAL, SK, PANDIT, Y, HJORT, E, HUANG, HZ, BRAIDOT, E, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, SCHUSTER, TR, PERYT, W, GURYN, W, PHATAK, SC, CHIKANIAN, A, VIYOGI, YP, PILE, P, PLANINIC, M, PLOSKON, MA, BRANDIN, AV, PLUTA, J, PLYKU, D, POLJAK, N, SEELE, J, POSKANZER, AM, CHOI, KE, POTUKUCHI, BVKS, VOKAL, S, HAAG, B, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUJAHARI, PR, BRIDGEMAN, A, PUTSCHKE, J, CHRISTIE, W, SEGER, J, RANIWALA, R, REHBERG, JM, RANIWALA, S, RAY, RL, HALLMAN, TJ, REDWINE, R, SELYUZHENKOV, I, SEYBOTH, P, SHAHALIEV, E, CHUNG, P, BUNZAROV, I, LIU, J, SHAO, M, BIRITZ, B, BELLWIED, R, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, CLARKE, RF, SKOBY, MJ, SMIRNOV, N, SORENSEN, P, LJUBICIC, T, VOLOSHIN, SA, SOWINSKI, J, BURTON, TP, HARRIS, JW, SPINKA, HM, SRIVASTAVA, B, CODRINGTON, MJM, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, WADA, M, LLOPE, WJ, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, MANWEILER, R, HAYS-WEHLE, JP, CAI, XZ, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, CEBRA, D, SUN, Z, LONGACRE, RS, SURROW, B, CORLISS, R, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, HEINZ, M, TANG, AH, CAINES, H, TANG, Z, WALKER, M, TARINI, LH, TARNOWSKY, T, COSENTINO, MR, LOVE, WA, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, HEPPELMANN, S, TLUSTY, D, WANG, F, TOKAREV, M, TRIBBLE, RE, SANCHEZ, MCDB, TRAINOR, TA, LU, Y, TRAM, VN, WANG, G, WANG, H, WANG, JS, HOFFMAN, AM, RITTER, HG, WANG, Q, HAMED, A, GROSNICK, D, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, CENDEJAS, R, WESTFALL, GD, WHITTEN, C, WIEMAN, H, ROBERTS, JB, CRAMER, JG, WINGFIELD, E, HOFFMANN, GW, MA, YG, WISSINK, SW, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, CERVANTES, MC, CRAWFORD, HJ, ROGACHEVSKIY, OV, XU, W, XU, Y, XU, Z, MAHAPATRA, DP, HOFMAN, DJ, XUE, L, YANG, Y, YEPES, P, YIP, K, HUMANIC, TJ, YOO, IK, BRUNA, E, YUE, Q, ZAWISZA, M, CHAJECKI, Z, ZBROSZCZYK, H, MAJKA, R, ZHAN, W, HOLLIS, RS, ZHANG, S, DAS, D, ZHANG, WM, ZHANG, XP, ROMERO, JL, ZHANG, Y, ZHANG, ZP, ZHAO, J, ZHONG, C, ZHOU, J, MALL, OI, CHALOUPKA, P, DASH, S, ZHOU, W, BETANCOURT, MJ, ZHU, X, ROSE, A, ZHU, YH, LEYVA, AD, DE SILVA, LC, DEBBE, RR, MARGETIS, S, TSAI, OD, DEDOVICH, TG, LIU, F, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, HUO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, ULERY, J, DRACHENBERG, JL, MARKERT, C, RUAN, L, DRAPER, JE, DUNLOP, JC, MAZUMDAR, MRD, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, IGO, G, ULLRICH, T, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, SAHOO, R, MASUI, H, ESTIENNE, M, EUN, L, EVDOKIMOV, O, FACHINI, P, FATEMI, R, HIRSCH, A, FEDORISIN, J, FERSCH, RG, IORDANOVA, A, FILIP, P, SAKAI, S, FINCH, E, MATIS, HS, FINE, V, FISYAK, Y, GAGLIARDI, CA, UNDERWOOD, DG, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, GEURTS, F, SAKREJDA, I, JACOBS, P, GHAZIKHANIAN, V, GRUBE, B, GHOSH, P, VAN BUREN, G, and GORBUNOV, YN
Subjects: Suppression, Nucleus-Nucleus Collisions, Resonances, Quark-Gluon Plasma, High Energy Physics::Experiment, J-Psi, Nuclear Experiment, Dimuon
Abstract: We report on a measurement of the gamma(1S + 2S + 3S) -> e(+)e(-) cross section at midrapidity in p + p collisions at root s = 200 GeV. We find the cross section to be 114 +/- 38(stat + fit)(-24)(+23)(syst) pb. Perturbative QCD calculations at next-to-leading order in the color evaporation model are in agreement with our measurement, while calculations in the color singlet model underestimate it by 2 sigma. Our result is consistent with the trend seen in world data as a function of the center-of-mass energy of the collision and extends the availability of gamma data to RHIC energies. The dielectron continuum in the invariant-mass range near the gamma is also studied to obtain a combined yield of e(+)e(-) pairs from the sum of the Drell-Yan process and b-(b) over bar production.
Published: 2010

10. Inclusive pi(0), eta, and direct photon production at high transverse momentum in p plus p and d plus Au collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ALAKHVERDYANTS, AV, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUMGART, S, LISA, MA, LIU, F, LIU, H, LIU, J, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, BIELCIK, J, GROSNICK, D, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MASUI, H, GRUBE, B, BIELCIKOVA, J, MATIS, HS, MATULENKO, YA, MCDONALD, D, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, GUERTIN, SM, MITROVSKI, MK, BIRITZ, B, MOHANTY, B, MONDAL, MM, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, GUPTA, A, NETRAKANTI, PK, NG, MJ, BLAND, LC, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, GUPTA, N, PACHR, M, PAGE, BS, PAL, SK, BONNER, BE, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, GURYN, W, PERYT, W, PHATAK, SC, PILE, P, PLANINIC, M, BOUCHET, J, PLOSKON, MA, PLUTA, J, PLYKU, D, POLJAK, N, POSKANZER, AM, HAAG, B, POTUKUCHI, BVKS, POWELL, CB, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, BRAIDOT, E, PUJAHARI, PR, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, HALLMAN, TJ, RAY, RL, REDWINE, R, REED, R, REHBERG, JM, RITTER, HG, ROBERTS, JB, BRANDIN, AV, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, HAMED, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKAI, S, SAKREJDA, I, SAKUMA, T, BRIDGEMAN, A, SALUR, S, SANDWEISS, J, HAN, LX, SANGALINE, E, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHUSTER, TR, SEELE, J, SEGER, J, SELYUZHENKOV, I, BRUNA, E, SEYBOTH, P, BEAVIS, DR, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, BUELTMANN, S, HARRIS, JW, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STANISLAUS, TDS, STASZAK, D, STEVENS, JR, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, HAYS-WEHLE, JP, BUNZAROV, I, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, HEINZ, M, DE TOLEDO, AS, BURTON, TP, TAKAHASHI, J, TANG, AH, TANG, Z, TARINI, LH, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, HEPPELMANN, S, TIMMINS, AR, TIMOSHENKO, S, CAI, XZ, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, HIRSCH, A, ULERY, J, ULLRICH, T, UNDERWOOD, DG, CAINES, H, VAN BUREN, G, VAN NIEUWENHUIZEN, G, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILIEV, AN, HJORT, E, VIDEBAEK, F, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, SANCHEZ, MCD, WADA, M, WALKER, M, WANG, F, WANG, G, WANG, H, HOFFMAN, AM, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, CATU, O, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, HOFFMANN, GW, WIEMAN, H, WINGFIELD, E, WISSINK, SW, WITT, R, WU, Y, XIE, W, CEBRA, D, XU, N, XU, QH, XU, W, HOFMAN, DJ, XU, Y, XU, Z, XUE, L, YANG, Y, YEPES, P, YIP, K, YOO, IK, CENDEJAS, R, YUE, Q, ZAWISZA, M, HOLLIS, RS, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, J, CERVANTES, MC, ZHONG, C, BELLWIED, R, ZHOU, J, ZHOU, W, ZHU, X, ZHU, YH, ZOULKARNEEV, R, ZOULKARNEEVA, Y, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, HUANG, HZ, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, P, CLARKE, RF, CODRINGTON, MJM, HUMANIC, TJ, CORLISS, R, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, LEYVA, AD, DE SILVA, LC, DEBBE, RR, DEDOVICH, TG, DEPHILLIPS, M, HUO, L, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DUNLOP, JC, MAZUMDAR, MRD, IGO, G, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, IORDANOVA, A, FEDORISIN, J, FERSCH, RG, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, JACOBS, P, GEROMITSOS, A, GEURTS, F, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, JACOBS, WW, JAKL, P, JENA, C, JIN, F, BENEDOSSO, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAUDER, K, KEANE, D, BETANCOURT, MJ, KECHECHYAN, A, KETTLER, D, KIKOLA, DP, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, BETTS, RR, KONZER, J, KOPYTINE, M, KORALT, I, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRUEGER, K, KRUS, M, KUMAR, L, BHASIN, A, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, BHATI, AK, LEVINE, MJ, LI, C, LI, L, LI, N, LI, W, LI, X, LI, Y, LI, Z, LIN, G, BICHSEL, H, and LINDENBAUM, SJ
Subjects: D+Au Collisions, Barrel Electromagnetic Calorimeter, Star, Fragmentation, Physics, Time Projection Chamber, Heavy-Ion Collisions, Distributions, High Energy Physics::Experiment, Leading Order, Hadron-Production, Nuclear Experiment
Abstract: We report a measurement of high-p(T) inclusive pi(0), eta, and direct photon production in p + p and d + Au collisions at root s(NN) = 200 GeV at midrapidity (0 < eta < 1). Photons from the decay pi(0) -> gamma gamma were detected in the barrel electromagnetic calorimeter of the STAR experiment at the Relativistic Heavy Ion Collider. The eta -> gamma gamma decay was also observed and constituted the first eta measurement by STAR. The first direct photon cross-section measurement by STAR is also presented; the signal was extracted statistically by subtracting the pi(0), eta, and omega(782) decay background from the inclusive photon distribution observed in the calorimeter. The analysis is described in detail, and the results are found to be in good agreement with earlier measurements and with next-to-leading-order perturbative QCD calculations.
Published: 2010

11. Measurement of D* mesons in jets from p plus p collisions at root s=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, BEAVIS, DR, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, BELLWIED, R, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUMANIC, TJ, IGO, G, IORDANOVA, A, BENEDOSSO, F, JACOBS, P, JACOBS, WW, JAKL, P, JENA, C, JIN, F, JONES, CL, JONES, PG, JOSEPH, J, JUDD, EG, KABANA, S, BETANCOURT, MJ, KAJIMOTO, K, KANG, K, KAPITAN, J, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIKOLA, DP, KIRYLUK, J, KISIEL, A, BETTS, RR, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOPYTINE, M, KORSCH, W, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, BHASIN, A, KRUEGER, K, KRUS, M, KUHN, C, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LAPOINTE, S, LAURET, J, LEBEDEV, A, BHATI, AK, LEDNICKY, R, LEE, CH, LEE, JH, LEIGHT, W, LEVINE, MJ, LI, N, LI, C, LI, Y, LIN, G, LINDENBAUM, SJ, BICHSEL, H, LISA, MA, LIU, F, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, BIELCIK, J, MA, GL, MA, YG, MAHAPATRA, DP, MAJKA, R, MALL, OI, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, BIELCIKOVA, J, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILNER, R, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, BIRITZ, B, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, BLAND, LC, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAGE, BS, PAL, SK, PANDIT, Y, PANEBRATSEV, Y, PAWLAK, T, BOMBARA, M, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, POSKANZER, AM, POTUKUCHI, BVKS, BONNER, BE, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, RANIWALA, R, RANIWALA, S, RAY, RL, REDWINE, R, REED, R, RIDIGER, A, BOTJE, M, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, BOUCHET, J, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, BRAIDOT, E, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, BRANDIN, AV, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STRIKHANOV, M, BRUNA, E, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Y, SUN, Z, SURROW, B, SYMONS, TJM, BUELTMANN, S, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, BURTON, TP, TLUSTY, D, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, BYSTERSKY, M, UNDERWOOD, DG, VAN BUREN, G, VAN LEEUWEN, M, MOLEN, AMV, VANFOSSEN, JA, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, CAI, XZ, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WALKER, M, WANG, F, WANG, G, WANG, JS, CAINES, H, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, G, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, SANCHEZ, MCD, WITT, R, WU, Y, XIE, W, XU, N, XU, QH, XU, Y, XU, Z, YANG, Y, YEPES, P, YOO, IK, CATU, O, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, S, ZHANG, WM, ZHANG, XP, ZHANG, Y, ZHANG, ZP, ZHAO, Y, CEBRA, D, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUO, JX, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CLARKE, RF, CODRINGTON, MJM, CORLISS, R, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE SILVA, LC, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGADHARAN, DR, GANTI, MS, GARCIA-SOLIS, EJ, GEROMITSOS, A, and GEURTS, F
Subjects: Z Decays, Physics, Heavy-Quark Production
Abstract: We report the measurement of charged D* mesons in inclusive jets produced in proton-proton collisions at a center-of-mass energy root s = 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider. For D* mesons with fractional momenta 0.2< z< 0.5 in inclusive jets with 11.5 GeV mean transverse energy, the production rate is found to be N(D*(+) + D*(-))/N(jet) = 0.015 +/- 0.008(stat) +/- 0.007(sys). This rate is consistent with perturbative QCD evaluation of gluon splitting into a pair of charm quarks and subsequent hadronization.
Published: 2009

12. Hadronic resonance production in d+Au collisions at sNN=200 GeV measured at the BNL Relativistic Heavy Ion Collider

Author: Abelev, BI, Aggarwal, MM, Ahammed, Z, Anderson, BD, Arkhipkin, D, Averichev, GS, Bai, Y, Balewski, J, Barannikova, O, Barnby, LS, Baudot, J, Baumgart, S, Beavis, DR, Bellwied, R, Benedosso, F, Betts, RR, Bhardwaj, S, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, LC, Bombara, M, Bonner, BE, Botje, M, Bouchet, J, Braidot, E, Brandin, AV, Bruna, Bueltmann, S, Burton, TP, Bystersky, M, Cai, XZ, Caines, H, De La Barca Sánchez, MC, Callner, J, Catu, O, Cebra, D, Cendejas, R, Cervantes, MC, Chajecki, Z, Chaloupka, P, Chattopdhyay, S, Chen, HF, Chen, JH, Chen, JY, Cheng, J, Cherney, M, Chikanian, A, Choi, KE, Christie, W, Chung, SU, Clarke, RF, Codrington, MJM, Coffin, JP, Cormier, TM, Cosentino, MR, Cramer, JG, Crawford, HJ, Das, D, Dash, S, Daugherity, M, De Silva, C, Dedovich, TG, Dephillips, M, Derevschikov, AA, De Souza, RD, Didenko, L, Djawotho, P, Dogra, SM, Dong, X, Drachenberg, JL, Draper, JE, Du, F, Dunlop, JC, Mazumdar, MRD, Edwards, WR, Efimov, LG, Elhalhuli, E, Elnimr, M, Emelianov, V, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Eun, L, Fachini, P, Fatemi, R, Fedorisin, J, Feng, A, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, CA, Gaillard, L, Gangaharan, DR, and Ganti, MS
Subjects: Particle and Plasma Physics, Molecular, Nuclear, Nuclear Experiment, nucl-ex, Atomic, Nuclear & Particles Physics
Abstract: We present the first measurements of the ρ(770)0,K*(892), Δ(1232)++,Σ(1385), and Λ(1520) resonances in d+Au collisions at sNN=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum pT. We observe that the resonance spectra follow a generalized scaling law with the transverse mass mT. The pT of resonances in minimum bias collisions are compared with the pT of π,K, and p̄. The ρ0/π-,K*/K-,Δ++/p,Σ(1385)/Λ, and Λ(1520)/Λ ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (RdAu) of the ρ0,K*, and Σ* scale with the number of binary collisions (Nbin) for pT 1.2 GeV/c. © 2008 The American Physical Society.
Published: 2008
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13. Spin alignment measurements of the K*(0)(892) and phi(1020) vector mesons in heavy ion collisions at root S-NN=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GORDON, A, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, BAUMGART, S, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, BEAVIS, DR, HIPPOLYTE, B, HIRSCH, A, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, IGO, G, BELLWIED, R, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JIN, F, JONES, PG, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, BENEDOSSO, F, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, BETTS, RR, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, BHARDWAJ, S, KUMAR, A, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, BHASIN, A, LEDNICKY, R, LEE, CH, LEVINE, MJ, LI, C, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, BHATI, AK, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, BICHSEL, H, MA, GL, MA, JG, MA, YG, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, BIELCIK, J, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, BIELCIKOVA, J, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NG, MJ, NOGACH, LV, BIRITZ, B, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PAWLAK, T, BLAND, LC, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, BOMBARA, M, POTEKHIN, M, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, BONNER, BE, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, RYKOV, V, BOTJE, M, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, BOUCHET, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, BRAIDOT, E, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, BRANDIN, AV, STASZAK, D, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, BUELTMANN, S, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, BURTON, TP, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRATTNER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, BYSTERSKY, M, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, CAI, XZ, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, CAINES, H, WANG, Q, WANG, X, WANG, XL, WANG, Y, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, SANCHEZ, MCD, WU, J, WU, Y, XU, N, XU, QH, XU, Z, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, CALLNER, J, ZHAN, W, ZHANG, H, ZHANG, S, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, CATU, O, ZOULKARNEEVA, Y, ZUO, JX, CEBRA, D, CENDEJAS, R, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, SU, CLARKE, RF, CODRINGTON, MJM, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, ELNIMR, M, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANGADHARAN, DR, and GANTI, MS
Subjects: Physics, Nuclear, Z(0) Decays, Quark-Gluon Plasma, Hyperon Polarization, Magnetic-Moment, High Energy Physics::Experiment, K&P Interactions, Protons, Hadron-Production, Signature, Pp, Nuclear Experiment, High-Energies
Abstract: We present the first spin alignment measurements for the K*(0)(892) and phi(1020) vector mesons produced at midrapidity with transverse momenta up to 5 GeV/c at root s(NN) = 200 GeV at RHIC. The diagonal spin-density matrix elements with respect to the reaction plane in Au+Au collisions are rho(00) = 0.32 +/- 0.04 (stat) +/- 0.09 (syst) for the K*(0) (0.8 < p(T) < 5.0 GeV/c) and rho(00) = 0.34 +/- 0.02 (stat) +/- 0.03 (syst) for the phi (0.4 < p(T) < 5.0 GeV/c) and are constant with transverse momentum and collision centrality. The data are consistent with the unpolarized expectation of 1/3 and thus no evidence is found for the transfer of the orbital angular momentum of the colliding system to the vector-meson spins. Spin alignments for K-*0 and phi in Au+Au collisions were also measured with respect to the particle's production plane. The phi result, rho(00) = 0.41 +/- 0.02 (stat) +/- 0.04 (syst), is consistent with that in p+p collisions, rho(00) = 0.39 +/- 0.03 (stat) +/- 0.06 (syst), also measured in this work. The measurements thus constrain the possible size of polarization phenomena in the production dynamics of vector mesons.
Published: 2008

14. Longitudinal double-spin asymmetry for inclusive jet production in (p)over-right-arrow + (p)over-right-arrow collisions at root s=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BENEDOSSO, F, BETTS, RR, BHARDWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BLYTH, SL, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRANDIN, AV, BURTON, TP, BYSTERSKY, M, CAI, XZ, CAINES, H, SANCHEZ, MCDLB, CALLNER, J, CATU, O, CEBRA, D, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, SU, CLARKE, RF, CODRINGTON, MJM, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YN, GOS, H, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, A, GUPTA, N, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HENRY, TW, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, HORNER, MJ, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KURNADI, P, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, C, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, PUTSCHKE, J, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRAM, VN, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, XL, WANG, Y, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, J, WU, Y, XU, N, XU, QH, XU, Z, YEPES, P, YOO, IK, YUE, Q, YUREVICH, VI, ZAWISZA, M, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: Photoproduction, Pair, Nuclear Theory, Physics, Multidisciplinary, High Energy Physics::Experiment, Polarized Protons, Nuclear Experiment, Nucleon
Abstract: We report a new STAR measurement of the longitudinal double-spin asymmetry A(LL) for inclusive jet production at midrapidity in polarized p+p collisions at a center-of-mass energy of root s = 200 GeV. The data, which cover jet transverse momenta 5 < p(T) < 30 GeV/c, are substantially more precise than previous measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements.
Published: 2008

15. Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, GREBENYUK, O, GROSNICK, D, GRUBE, B, GUERTIN, SM, GUPTA, A, GUPTA, N, GURYN, W, HAAG, B, HALLMAN, TJ, HAMED, A, BAUMGART, S, HARRIS, JW, HE, W, HEINZ, M, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, DJ, HOLLIS, RS, BEAVIS, DR, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, LGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JIN, F, JONES, PG, BELLWIED, R, JUDD, EG, KABANA, S, KAJIMOTO, K, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, BENEDOSSO, F, KIRYLUK, J, KISIEL, A, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, BETTS, RR, KRAVTSOV, P, KRAVTSOV, V, KRUEGER, K, KUHN, C, KUMAR, A, KUMAR, L, KURNADI, P, LAMONT, MAC, LANDGRAF, JM, LANGE, S, BHARDWAJ, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEVINE, MJ, LI, C, LI, Y, LIN, G, BHASIN, A, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, BHATI, AK, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, BICHSEL, H, MANWEILER, R, MARGETIS, S, MARKERT, C, MATIS, HS, MATULENKO, YA, MCSHANE, TS, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, BIELCIK, J, MIODUSZEWSKI, S, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, BIELCIKOVA, J, NEPALI, C, NETRAKANTI, PK, NG, MJ, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKADA, H, OKOROKOV, V, OLDENBURG, M, BLAND, LC, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, BOMBARA, M, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, POTEKHIN, M, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PRUTHI, NK, BONNER, BE, PUTSCHKE, J, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, BOTJE, M, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, RYKOV, V, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, BRAIDOT, E, SANDWEISS, J, SARSOUR, M, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SCHWEDA, K, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, BRANDIN, AV, SHAHALIEV, E, SHAO, M, SHARMA, M, SHI, SS, SHI, XH, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SKOBY, MJ, SMIRNOV, N, BUELTMANN, S, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STOCK, R, STRIKHANOV, M, BURTON, TP, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, BYSTERSKY, M, TAKAHASHI, J, TANG, AH, TANG, Z, TARNOWSKY, T, THEIN, D, THOMAS, JH, TIAN, J, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, CAI, XZ, TRAM, VN, TRATMER, AL, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, CAINES, H, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, VASCONCELOS, GMS, VASILEVSKI, IM, VASILIEV, AN, VIDEBAEK, F, VIGDOR, SE, VIYOGI, YP, VOKAL, S, SANCHEZ, MCD, VOLOSHIN, SA, WADA, M, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, Q, WANG, X, WANG, XL, WANG, Y, CALLNER, J, WEBB, JC, WESTFALL, GD, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, J, WU, Y, XU, N, XU, QH, CATU, O, XU, Z, YEPES, P, YOO, IK, YUE, Q, ZAWISZA, M, ZBROSZCZYK, H, ZHAN, W, ZHANG, H, ZHANG, S, ZHANG, WM, CEBRA, D, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKAMEEV, R, ZOULKARNEEVA, Y, ZUO, JX, CERVANTES, MC, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHOI, KE, CHRISTIE, W, CHUNG, SU, CLARKE, RF, CODRINGTON, MJM, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DE SOUZA, RD, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNLOP, JC, MAZUMDAR, MRD, EDWARDS, WR, EFIMOV, LG, ELHALHULI, E, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, EUN, L, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, R, GORBUNOV, YN, and GORDON, A
Subjects: Expansion, Energy, Nuclear Theory, Lee-Yang Zeros, Relativistic Nuclear Collisions, Collective Flow, Signature, Collaboration, Anisotropic Flow, Physics, Nuclear, Quark-Gluon Plasma, High Energy Physics::Experiment, Phase-Transition, Nuclear Experiment
Abstract: We present STAR results on the elliptic flow upsilon(2) Of charged hadrons, strange and multistrange particles from,root s(NN) = 200 GeV Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). The detailed study of the centrality dependence of upsilon(2) over a broad transverse momentum range is presented. Comparisons of different analysis methods are made in order to estimate systematic uncertainties. To discuss the nonflow effect, we have performed the first analysis Of upsilon(2) with the Lee-Yang zero method for K-S(0) and A. In the relatively low PT region, P-T
Published: 2008

16. Strange particle production in p+p collisions at root s=200 GeV

Author: ABELEV, BI, ADAMS, J, AGGARWAL, MM, AHAMMED, Z, AMONETT, J, ANDERSON, BD, ANDERSON, M, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, RAKNESS, G, RANIWALA, R, RANIWALA, S, RAY, RL, RAZIN, SV, BLYTH, SL, REINNARTH, J, RELYEA, D, RETIERE, F, HARRIS, JW, LJUBICIC, T, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, BONNER, BE, RUAN, L, RUSSCHER, MJ, LLOPE, WJ, HE, W, SAHOO, R, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, BOTJE, M, LONG, H, SCHMITZ, N, BARANNIKOVA, O, SCHWEDA, K, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, LONGACRE, RS, SHEN, WQ, BOUCHET, J, HEINZ, M, SHIMANSKIY, SS, SICHTERMANN, E, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SOOD, G, LOVE, WA, SORENSEN, P, SOWINSKI, J, SPELTZ, J, HENRY, TW, BRANDIN, AV, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STOCK, R, LU, Y, STOLPOVSKY, A, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, HEPPLEMANN, S, SUGARBAKER, E, BRAVAR, A, SUMBERA, M, SUN, Z, SURROW, B, LUDLAM, T, SWANGER, M, SYMONS, TJM, DE TOLEDO, AS, TAI, A, TAKAHASHI, J, HIPPOLYTE, B, TANG, AH, TARNOWSKY, T, BURTON, TP, THEIN, D, LYNN, D, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, HIRSCH, A, TRIBBLE, RE, TSAI, OD, ULERY, J, MA, GL, BYSTERSKY, M, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, VANDER MOLEN, AM, HJORT, E, VARMA, R, VASILEVSKI, IM, BHARDWAJ, S, VASILIEV, AN, VERNET, R, CADMAN, RV, VIGDOR, SE, VIYOGI, VP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, HOFFMAN, AM, WANG, F, GROSNICK, D, WANG, G, WANG, JS, WANG, XL, WANG, Y, CAI, XZ, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, HOFFMANN, GW, MA, JG, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WOOD, J, WU, J, CAINES, H, XU, N, XU, QH, XU, Z, MA, YG, HORNER, MJ, YEPES, P, YOO, IK, YUREVICH, VI, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, SANCHEZ, MCD, ZHANG, ZP, MAGESTRO, D, ZHAO, Y, HUANG, HZ, ZHONG, C, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, ZUO, JX, CASTILLO, J, CATU, O, CEBRA, D, MAHAPATRA, DP, CHAJECKI, Z, CHALOUPKA, P, BARNBY, LS, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, MAJKA, R, COFFIN, JP, CORMIER, TM, COSENTINO, MR, HUANG, SL, CRAMER, JG, CRAWFORD, HJ, DAS, D, DAS, S, DASH, S, DAUGHERITY, M, MANGOTRA, LK, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, HUGHES, EW, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, WJ, MANWEILER, R, DONG, X, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, HUMANIC, TJ, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, MARGETIS, S, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, IGO, G, FATEMI, R, FEDORISIN, J, FILIMONOV, K, MARKERT, C, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, GAGLIARDI, CA, GAILLARD, L, JACOBS, P, GANTI, MS, GHAZIKHANIAN, V, MARTIN, L, GHOSH, P, GONZALEZ, JE, GORBUNOV, YG, GOS, H, GREBENYUK, O, JACOBS, WW, JAKL, P, JIA, F, JIANG, H, JONES, PG, GUERTIN, SM, BAUDOT, J, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KHODYREV, VY, KIM, BC, BHASIN, A, KIRYLUK, J, BEKELE, S, KISIEL, A, KISLOV, EM, KLEIN, SR, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, MATIS, HS, KOUCHPIL, V, KOWALIK, KL, BELAGA, VV, KRAMER, M, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, MATULENKO, YA, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, BELLINGERI-LAURIKAINEN, A, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, MCCLAIN, CJ, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, BELLWIED, R, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, MCSHANE, TS, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, BENEDOSSO, F, LIU, Z, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, GUIMARAES, KSFF, MIODUSZEWSKI, S, BHATI, AK, MIRONOV, C, MISCHKE, A, MISHRA, DK, MITCHELL, J, MOHANTY, B, MOLNAR, L, MOORE, CF, MOROZOV, DA, GUPTA, A, MUNHOZ, MG, NANDI, BK, BICHSEL, H, NATTRASS, C, NAYAK, TK, NELSON, JM, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, GUTIERREZ, TD, OGAWA, A, OKOROKOV, V, OLDENBURG, M, BIELCIK, J, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PANITKIN, SY, PAVLINOV, AI, HAAG, B, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, BIELCIKOVA, J, PERYT, W, PHATAK, SC, PICHA, R, PLANINIC, M, PLUTA, J, HALLMAN, TJ, POLJAK, N, PORILE, N, PORTER, J, POSKANZER, AM, POTEKHIN, M, BLAND, LC, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, HAMED, A, and PUTSCHKE, J
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, Heavy-Ion Collisions, P(P)Over-Bar Collisions, Physics, Nuclear, Large Transverse-Momentum, Proton-Proton Collisions, Au+Au Collisions, Thermal Hadron-Production, Fragmentation Functions, High Energy Physics::Experiment, Nuclear Experiment, Gev Cm Energy, Statistical Thermodynamics, Nuclear Collisions
Abstract: We present strange particle spectra and yields measured at midrapidity in root s = 200 GeV proton-proton (p + p) collisions at the BNL Relativistic Heavy Ion Collider (RHIC). We find that the previously observed universal transverse mass (m(T) = root PT2 + m(2)) scaling of hadron production in p + p collisions seems to break down at higher m(T) and that there is a difference in the shape of the m(T) spectrum between baryons and mesons. We observe midrapidity antibaryon to baryon ratios near unity for Lambda and Xi baryons and no dependence of the ratio on transverse momentum, indicating that our data do not yet reach the quark-jet dominated region. We show the dependence of the mean transverse momentum < p(T)> on measured charged particle multiplicity and on particle mass and infer that these trends are consistent with gluon-jet dominated particle production. The data are compared with previous measurements made at the CERN Super Proton Synchrotron and Intersecting Storage Rings and in Fermilab experiments and with leading-order and next-to-leading-order string fragmentation model predictions. We infer from these comparisons that the spectral shapes and particle yields from p + p collisions at RHIC energies have large contributions from gluon jets rather than from quark jets.
Published: 2007

17. Transverse momentum and centrality dependence of High-p(T) nonphotonic electron suppression in Au plus Au collisions at root(NN)-N-S=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, BAUMGART, S, BELAGA, VV, BELLINGERI-LAURIKAINEN, A, BELLWIED, R, BENEDOSSO, F, BETTS, RR, BHARDWAJ, S, BHASIN, A, BHATI, AK, BICHSEL, H, BIELCIK, J, BIELCIKOVA, J, BLAND, LC, BLYTH, SL, BOMBARA, M, BONNER, BE, BOTJE, M, BOUCHET, J, BRANDIN, AV, BRAVAR, A, BURTON, TP, BYSTERSKY, M, CADMAN, RV, CAI, XZ, CAINES, H, SANCHEZ, MCD, CALLNER, J, CATU, O, CEBRA, D, CHAJECKI, Z, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, SU, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YG, GOS, H, GREBENYUK, O, GROSNICK, D, GUERTIN, SM, GUIMARAES, KSFF, GUPTA, N, HAAG, B, HALLMAN, TJ, HAMED, A, HARRIS, JW, HE, W, HEINZ, M, HENRY, TW, HEPPELMANN, S, HIPPOLYTE, B, HIRSCH, A, HJORT, E, HOFFMAN, AM, HOFFMANN, GW, HOFMAN, D, HOLLIS, R, HORNER, MJ, HUANG, HZ, HUGHES, EW, HUMANIC, TJ, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JIA, F, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KURNADI, P, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, LIU, H, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, MA, GL, MA, JG, MA, YG, MAGESTRO, D, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, MIODUSZEWSKI, S, MIRONOV, C, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, NAYAK, TK, NELSON, JM, NEPALI, NS, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, OLDENBURG, M, OLSON, D, PACHR, M, PAL, SK, PANEBRATSEV, Y, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, POTEKHIN, M, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, ROSE, A, ROY, C, RUAN, L, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, SAZHIN, PS, SCHAMBACH, J, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, SHARMA, M, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, SURROW, B, SYMONS, TJM, DE TOLEDO, AS, TAKAHASHI, J, TANG, AH, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, TSAI, OD, ULERY, J, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, VANDER MOLEN, AM, VARMA, R, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, WANG, G, WANG, JS, WANG, XL, WANG, Y, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, WIEMAN, H, WISSINK, SW, WITT, R, WU, J, WU, Y, XU, N, XU, QH, XU, Z, YEPES, P, YOO, IK, YUE, Q, YUREVICH, VI, ZHAN, W, ZHANG, H, ZHANG, WM, ZHANG, Y, ZHANG, ZP, ZHAO, Y, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, and ZUO, JX
Subjects: Perturbative Qcd, Energy-Loss, High Energy Physics::Phenomenology, Physics, Multidisciplinary, Particle Identification, High Energy Physics::Experiment, Nuclear Experiment, Tomography, Heavy-Quark Production
Abstract: The STAR collaboration at the BNL Relativistic Heavy-Ion Collider (RHIC) reports measurements of the inclusive yield of nonphotonic electrons, which arise dominantly from semileptonic decays of heavy flavor mesons, over a broad range of transverse momenta (1.2 < p(T)< 10 GeV/c) in p+p, d+Au, and Au+Au collisions at root s(NN)=200 GeV. The nonphotonic electron yield exhibits an unexpectedly large suppression in central Au+Au collisions at high p(T), suggesting substantial heavy-quark energy loss at RHIC. The centrality and p(T) dependences of the suppression provide constraints on theoretical models of suppression.
Published: 2007

18. Partonic flow and phi-meson production in Au+Au collisions at root s(NN)=200 GeV

Author: ABELEV, BI, AGGARWAL, MM, AHAMMED, Z, ANDERSON, BD, ARKHIPKIN, D, AVERICHEV, GS, BAI, Y, BALEWSKI, J, BARANNIKOVA, O, BARNBY, LS, BAUDOT, J, LIU, J, LIU, L, LJUBICIC, T, LLOPE, WJ, LONGACRE, RS, LOVE, WA, LU, Y, LUDLAM, T, LYNN, D, BHATI, AK, GROSNICK, D, MA, GL, MA, JG, MA, YG, MAHAPATRA, DP, MAJKA, R, MANGOTRA, LK, MANWEILER, R, MARGETIS, S, MARKERT, C, MARTIN, L, GRUBE, B, BICHSEL, H, MATIS, HS, MATULENKO, YA, MCCLAIN, CJ, MCSHANE, TS, MELNICK, Y, MESCHANIN, A, MILLANE, J, MILLER, ML, MINAEV, NG, GUERTIN, SM, MIODUSZEWSKI, S, BIELCIK, J, MIRONOV, C, MISCHKE, A, MITCHELL, J, MOHANTY, B, MOROZOV, DA, MUNHOZ, MG, NANDI, BK, NATTRASS, C, GUIMARAES, KSFF, NAYAK, TK, NELSON, JM, BIELCIKOVA, J, NEPALI, C, NETRAKANTI, PK, NOGACH, LV, NURUSHEV, SB, ODYNIEC, G, OGAWA, A, OKOROKOV, V, GUPTA, N, OLDENBURG, M, OLSON, D, PACHR, M, BLAND, LC, PAL, SK, PANEBRATSEV, Y, PAVLINOV, AI, PAWLAK, T, PEITZMANN, T, PEREVOZTCHIKOV, V, HAAG, B, PERKINS, C, PERYT, W, PHATAK, SC, PLANINIC, M, BLYTH, SL, PLUTA, J, POLJAK, N, PORILE, N, POSKANZER, AM, POTEKHIN, M, HALLMAN, TJ, POTREBENIKOVA, E, POTUKUCHI, BVKS, PRINDLE, D, PRUNEAU, C, PUTSCHKE, J, BOMBARA, M, QATTAN, IA, RANIWALA, R, RANIWALA, S, RAY, RL, HAMED, A, RELYEA, D, RIDIGER, A, RITTER, HG, ROBERTS, JB, ROGACHEVSKIY, OV, ROMERO, JL, BONNER, BE, ROSE, A, ROY, C, RUAN, L, HARRIS, JW, RUSSCHER, MJ, SAHOO, R, SAKREJDA, I, SAKUMA, T, SALUR, S, SANDWEISS, J, SARSOUR, M, BOTJE, M, SAZHIN, PS, SCHAMBACH, J, HE, W, SCHARENBERG, RP, SCHMITZ, N, SEGER, J, SELYUZHENKOV, I, SEYBOTH, P, SHABETAI, A, SHAHALIEV, E, SHAO, M, BOUCHET, J, SHARMA, M, BAUMGART, S, SHEN, WQ, SHIMANSKIY, SS, SICHTERMANN, EP, SIMON, F, SINGARAJU, RN, SMIRNOV, N, SNELLINGS, R, SORENSEN, P, SOWINSKI, J, BRANDIN, AV, HEINZ, M, SPELTZ, J, SPINKA, HM, SRIVASTAVA, B, STADNIK, A, STANISLAUS, TDS, STASZAK, D, STOCK, R, STRIKHANOV, M, STRINGFELLOW, B, SUAIDE, AAP, HENRY, TW, BRAVAR, A, SUAREZ, MC, SUBBA, NL, SUMBERA, M, SUN, XM, SUN, Z, SURROW, B, SYMONS, TJM, SZANTO DE TOLEDO, A, TAKAHASHI, J, HEPPELMANN, S, TANG, AH, BURTON, TP, TARNOWSKY, T, THOMAS, JH, TIMMINS, AR, TIMOSHENKO, S, TOKAREV, M, TRAINOR, TA, TRENTALANGE, S, TRIBBLE, RE, HIPPOLYTE, B, TSAI, OD, ULERY, J, BYSTERSKY, M, ULLRICH, T, UNDERWOOD, DG, VAN BUREN, G, VAN DER KOLK, N, VAN LEEUWEN, M, MOLEN, AMV, VARMA, R, HIRSCH, A, VASILEVSKI, IM, VASILIEV, AN, VERNET, R, CADMAN, RV, VIGDOR, SE, VIYOGI, YP, VOKAL, S, VOLOSHIN, SA, WAGGONER, WT, WANG, F, HJORT, E, WANG, G, WANG, JS, WANG, XL, WANG, Y, CAI, XZ, WATSON, JW, WEBB, JC, WESTFALL, GD, WETZLER, A, WHITTEN, C, HOFFMAN, AM, WIEMAN, H, WISSINK, SW, WITT, R, WU, J, WU, Y, CAINES, H, XU, N, XU, QH, XU, Z, YEPES, P, HOFFMANN, GW, YOO, IK, YUE, Q, YUREVICH, VI, ZHAN, W, ZHANG, H, ZHANG, WM, CALDERON DE LA BARCA SANCHEZ, M, ZHANG, Y, ZHANG, ZP, ZHAO, Y, HOFMAN, DJ, ZHONG, C, ZHOU, J, ZOULKARNEEV, R, ZOULKARNEEVA, Y, ZUBAREV, AN, ZUO, JX, CALLNER, J, CATU, O, CEBRA, D, CHAJECKI, Z, HOLLIS, RS, CHALOUPKA, P, CHATTOPADHYAY, S, CHEN, HF, CHEN, JH, CHEN, JY, CHENG, J, CHERNEY, M, CHIKANIAN, A, CHRISTIE, W, CHUNG, SU, BELAGA, VV, COFFIN, JP, CORMIER, TM, COSENTINO, MR, CRAMER, JG, CRAWFORD, HJ, DAS, D, DASH, S, DAUGHERITY, M, DE MOURA, MM, DEDOVICH, TG, HORNER, MJ, DEPHILLIPS, M, DEREVSCHIKOV, AA, DIDENKO, L, DIETEL, T, DJAWOTHO, P, DOGRA, SM, DONG, X, DRACHENBERG, JL, DRAPER, JE, DU, F, HUANG, HZ, DUNIN, VB, DUNLOP, JC, MAZUMDAR, MRD, ECKARDT, V, EDWARDS, WR, EFIMOV, LG, EMELIANOV, V, ENGELAGE, J, EPPLEY, G, ERAZMUS, B, HUGHES, EW, ESTIENNE, M, FACHINI, P, FATEMI, R, FEDORISIN, J, FENG, A, FILIP, P, FINCH, E, FINE, V, FISYAK, Y, FU, J, HUMANIC, TJ, GAGLIARDI, CA, GAILLARD, L, GANTI, MS, GARCIA-SOLIS, E, GHAZIKHANIAN, V, GHOSH, P, GORBUNOV, YG, GOS, H, GREBENYUK, O, IGO, G, IORDANOVA, A, JACOBS, P, JACOBS, WW, JAKL, P, JIA, F, BELLINGERI-LAURIKAINEN, A, JONES, PG, JUDD, EG, KABANA, S, KANG, K, KAPITAN, J, KAPLAN, M, KEANE, D, KECHECHYAN, A, KETTLER, D, KHODYREV, VY, BELLWIED, R, KIM, BC, KIRYLUK, J, KISIEL, A, KISLOV, EM, KLEIN, SR, KNOSPE, AG, KOCOLOSKI, A, KOETKE, DD, KOLLEGGER, T, KOPYTINE, M, BENEDOSSO, F, KOTCHENDA, L, KOUCHPIL, V, KOWALIK, KL, KRAVTSOV, P, KRAVTSOV, VI, KRUEGER, K, KUHN, C, KULIKOV, AI, KUMAR, A, KURNADI, P, BETTS, RR, KUZNETSOV, AA, LAMONT, MAC, LANDGRAF, JM, LANGE, S, LAPOINTE, S, LAUE, F, LAURET, J, LEBEDEV, A, LEDNICKY, R, LEE, CH, BHARDWAJ, S, LEHOCKA, S, LEVINE, MJ, LI, C, LI, Q, LI, Y, LIN, G, LIN, X, LINDENBAUM, SJ, LISA, MA, LIU, F, BHASIN, A, and LIU, H
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Physics, Multidisciplinary, Signature, Collaboration, Nuclei, Qcd, Anisotropic Flow, Photoproduction, Elliptic Flow, Perspective, Quark-Gluon Plasma, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We present first measurements of the phi-meson elliptic flow (v(2)(p(T))) and high-statistics p(T) distributions for different centralities from root s(NN) = 200 GeV Au+Au collisions at RHIC. In minimum bias collisions the v(2) of the phi meson is consistent with the trend observed for mesons. The ratio of the yields of the Omega to those of the phi as a function of transverse momentum is consistent with a model based on the recombination of thermal s quarks up to p(T)similar to 4 GeV/c, but disagrees at higher momenta. The nuclear modification factor (R-CP) of phi follows the trend observed in the K-S(0) mesons rather than in Lambda baryons, supporting baryon-meson scaling. These data are consistent with phi mesons in central Au+Au collisions being created via coalescence of thermalized s quarks and the formation of a hot and dense matter with partonic collectivity at RHIC.
Published: 2007

19. Neutral kaon interferometry in Au+Au collisions at sNN=200 GeV

Author: Abelev, BI, Aggarwal, MM, Ahammed, Z, Amonett, J, Anderson, BD, Anderson, M, Arkhipkin, D, Averichev, GS, Bai, Y, Balewski, J, Barannikova, O, Barnby, LS, Baudot, J, Bekele, S, Belaga, VV, Bellingeri-Laurikainen, A, Bellwied, R, Benedosso, F, Bhardwaj, S, Bhasin, A, Bhati, AK, Bichsel, H, Bielcik, J, Bielcikova, J, Bland, LC, Blyth, SL, Bonner, BE, Botje, M, Bouchet, J, Brandin, AV, Bravar, A, Burton, TP, Bystersky, M, Cadman, RV, Cai, XZ, Caines, H, Sánchez, MCDLB, Castillo, J, Catu, O, Cebra, D, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, HF, Chen, JH, Cheng, J, Cherney, M, Chikanian, A, Christie, W, Coffin, JP, Cormier, TM, Cosentino, MR, Cramer, JG, Crawford, HJ, Das, D, Das, S, Dash, S, Daugherity, M, Moura, MMD, Dedovich, TG, Dephillips, M, Derevschikov, AA, Didenko, L, Dietel, T, Djawotho, P, Dogra, SM, Dong, WJ, Dong, X, Draper, JE, Du, F, Dunin, VB, Dunlop, JC, Mazumdar, MRD, Eckardt, V, Edwards, WR, Efimov, LG, Emelianov, V, Engelage, J, Eppley, G, Erazmus, B, Estienne, M, Fachini, P, Fatemi, R, Fedorisin, J, Filimonov, K, Filip, P, Finch, E, Fine, V, Fisyak, Y, Fu, J, Gagliardi, CA, Gaillard, L, Ganti, MS, Ghazikhanian, V, Ghosh, P, Gonzalez, JE, Gorbunov, YG, Gos, H, Grebenyuk, O, and Grosnick, D
Subjects: Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, Atomic, Nuclear & Particles Physics
Abstract: We present the first statistically meaningful results from two-Ks0 interferometry in heavy-ion collisions at sNN=200 GeV. A model that takes the effect of the strong interaction into account has been used to fit the measured correlation function. The effects of single and coupled channels were explored. At the mean transverse mass mT =1.07 GeV, we obtain the values R=4.09±0.46(stat)±0.31(sys) fm and λ=0.92±0.23(stat) ±0.13(sys), where R and λ are the invariant radius and chaoticity parameters, respectively. The results are qualitatively consistent with mT systematics established with pions in a scenario characterized by a strong collective flow. © 2006 The American Physical Society.
Published: 2006
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19 results on '"Burton TP"'

2. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at √sNN= 200 GeV

3. STAR Collaboration

4. Energy dependence of moments of net-proton multiplicity distributions at RHIC

5. Elliptic flow of identified hadrons in Au+Au collisions at sNN=7.7–62.4 GeV

6. Fluctuations of charge separation perpendicular to the event plane and local parity violation in sqrt(sNN)=200 GeV Au+Au collisions at RHIC

7. Measurement of the Bottom Quark Contribution to Nonphotonic Electron Production in p plus p Collisions at root s=200 GeV

8. An Experimental Exploration of the QCD Phase Diagram: The Search for the Critical Point and the Onset of De-confinement

9. gamma cross section in p plus p collisions at root s=200 GeV

10. Inclusive pi(0), eta, and direct photon production at high transverse momentum in p plus p and d plus Au collisions at root s(NN)=200 GeV

11. Measurement of D* mesons in jets from p plus p collisions at root s=200 GeV

12. Hadronic resonance production in d+Au collisions at sNN=200 GeV measured at the BNL Relativistic Heavy Ion Collider

13. Spin alignment measurements of the K*(0)(892) and phi(1020) vector mesons in heavy ion collisions at root S-NN=200 GeV

14. Longitudinal double-spin asymmetry for inclusive jet production in (p)over-right-arrow + (p)over-right-arrow collisions at root s=200 GeV

15. Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions

16. Strange particle production in p+p collisions at root s=200 GeV

17. Transverse momentum and centrality dependence of High-p(T) nonphotonic electron suppression in Au plus Au collisions at root(NN)-N-S=200 GeV

18. Partonic flow and phi-meson production in Au+Au collisions at root s(NN)=200 GeV

19. Neutral kaon interferometry in Au+Au collisions at sNN=200 GeV

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