Charged and strange hadron elliptic flow in Cu plus Cu collisions at root s(NN)=62.4 and 200 GeV

Autoria(s): ABELEV, B. I.; AGGARWAL, M. M.; AHAMMED, Z.; ALAKHVERDYANTS, A. V.; ALEKSEEV, I.; ANDERSON, B. D.; ARKHIPKIN, D.; AVERICHEV, G. S.; BALEWSKI, J.; BARNBY, L. S.; BAUMGART, S.; BEAVIS, D. R.; BELLWIED, R.; BETANCOURT, M. J.; BETTS, R. R.; BHASIN, A.; BHATI, A. K.; BICHSEL, H.; BIELCIK, J.; BIELCIKOVA, J.; BIRITZ, B.; BLAND, L. C.; BONNER, B. E.; BOUCHET, J.; BRAIDOT, E.; BRANDIN, A. V.; BRIDGEMAN, A.; BRUNA, E.; BUELTMANN, S.; BUNZAROV, I.; BURTON, T. P.; CAI, X. Z.; CAINES, H.; SANCHEZ, M. Calderon de la Barca; CATU, O.; CEBRA, D.; CENDEJAS, R.; CERVANTES, M. C.; CHAJECKI, Z.; CHALOUPKA, P.; CHATTOPADHYAY, S.; CHEN, H. F.; CHEN, J. H.; CHEN, J. Y.; CHENG, J.; CHERNEY, M.; CHIKANIAN, A.; CHOI, K. E.; CHRISTIE, W.; CHUNG, P.; CLARKE, R. F.; CODRINGTON, M. J. M.; CORLISS, R.; CRAMER, J. G.; CRAWFORD, H. J.; DAS, D.; DASH, S.; LEYVA, A. Davila; SILVA, L. C. De; DEBBE, R. R.; DEDOVICH, T. G.; DEPHILLIPS, M.; DEREVSCHIKOV, A. A.; SOUZA, R. Derradi de; DIDENKO, L.; DJAWOTHO, P.; DOGRA, S. M.; DONG, X.; DRACHENBERG, J. L.; DRAPER, J. E.; DUNLOP, J. C.; MAZUMDAR, M. R. Dutta; EFIMOV, L. G.; ELHALHULI, E.; ELNIMR, M.; ENGELAGE, J.; EPPLEY, G.; ERAZMUS, B.; ESTIENNE, M.; EUN, L.; EVDOKIMOV, O.; FACHINI, P.; FATEMI, R.; FEDORISIN, J.; FERSCH, R. G.; FILIP, P.; FINCH, E.; FINE, V.; FISYAK, Y.; GAGLIARDI, C. A.; GANGADHARAN, D. R.; GANTI, M. S.; GARCIA-SOLIS, E. J.; GEROMITSOS, A.; GEURTS, F.; GHAZIKHANIAN, V.; GHOSH, P.; GORBUNOV, Y. N.; GORDON, A.; GREBENYUK, O.; GROSNICK, D.; GRUBE, B.; GUERTIN, S. M.; GUPTA, A.; GUPTA, N.; GURYN, W.; HAAG, B.; HAMED, A.; HAN, L. -X.; HARRIS, J. W.; HAYS-WEHLE, J. P.; HEINZ, M.; HEPPELMANN, S.; HIRSCH, A.; HJORT, E.; HOFFMAN, A. M.; HOFFMANN, G. W.; HOFMAN, D. J.; HOLLIS, R. S.; HUANG, H. Z.; HUMANIC, T. J.; HUO, L.; IGO, G.; IORDANOVA, A.; JACOBS, P.; JACOBS, W. W.; JAKL, P.; JENA, C.; JIN, F.; JONES, C. L.; JONES, P. G.; JOSEPH, J.; JUDD, E. G.; KABANA, S.; KAJIMOTO, K.; KANG, K.; KAPITAN, J.; KAUDER, K.; KEANE, D.; KECHECHYAN, A.; KETTLER, D.; KIKOLA, D. P.; KIRYLUK, J.; KISIEL, A.; KLEIN, S. R.; KNOSPE, A. G.; KOCOLOSKI, A.; KOETKE, D. D.; KOLLEGGER, T.; KONZER, J.; KOPYTINE, M.; KORALT, I.; KOROLEVA, L.; KORSCH, W.; KOTCHENDA, L.; KOUCHPIL, V.; KRAVTSOV, P.; KRUEGER, K.; KRUS, M.; KUMAR, L.; KURNADI, P.; LAMONT, M. A. C.; LANDGRAF, J. M.; LAPOINTE, S.; LAURET, J.; LEBEDEV, A.; LEDNICKY, R.; LEE, C. -H.; LEE, J. H.; LEIGHT, W.; LEVINE, M. J.; LI, C.; LI, L.; LI, N.; LI, W.; LI, X.; LI, Y.; LI, Z.; LIN, G.; LINDENBAUM, S. J.; LISA, M. A.; LIU, F.; LIU, H.; LIU, J.; LJUBICIC, T.; LLOPE, W. J.; LONGACRE, R. S.; LOVE, W. A.; LU, Y.; MA, G. L.; MA, Y. G.; MAHAPATRA, D. P.; MAJKA, R.; MALL, O. I.; MANGOTRA, L. K.; MANWEILER, R.; MARGETIS, S.; MARKERT, C.; MASUI, H.; MATIS, H. S.; MATULENKO, Yu. A.; MCDONALD, D.; MCSHANE, T. S.; MESCHANIN, A.; MILNER, R.; MINAEV, N. G.; MIODUSZEWSKI, S.; MISCHKE, A.; MITROVSKI, M. K.; MOHANTY, B.; MONDAL, M. M.; MOROZOV, B.; MOROZOV, D. A.; Munhoz, Marcelo Gameiro; NANDI, B. K.; NATTRASS, C.; NAYAK, T. K.; NELSON, J. M.; NETRAKANTI, P. K.; NG, M. J.; NOGACH, L. V.; NURUSHEV, S. B.; ODYNIEC, G.; OGAWA, A.; OKADA, H.; OKOROKOV, V.; OLSON, D.; PACHR, M.; PAGE, B. S.; PAL, S. K.; PANDIT, Y.; PANEBRATSEV, Y.; PAWLAK, T.; PEITZMANN, T.; PEREVOZTCHIKOV, V.; PERKINS, C.; PERYT, W.; PHATAK, S. C.; PILE, P.; PLANINIC, M.; PLOSKON, M. A.; PLUTA, J.; PLYKU, D.; POLJAK, N.; POSKANZER, A. M.; POTUKUCHI, B. V. K. S.; POWELL, C. B.; PRINDLE, D.; PRUNEAU, C.; PRUTHI, N. K.; PUJAHARI, P. R.; PUTSCHKE, J.; RANIWALA, R.; RANIWALA, S.; RAY, R. L.; REDWINE, R.; REED, R.; REHBERG, J. M.; RITTER, H. G.; ROBERTS, J. B.; ROGACHEVSKIY, O. V.; ROMERO, J. L.; ROSE, A.; ROY, C.; RUAN, L.; SAHOO, R.; SAKAI, S.; SAKREJDA, I.; SAKUMA, T.; SALUR, S.; SANDWEISS, J.; SANGALINE, E.; SCHAMBACH, J.; SCHARENBERG, R. P.; SCHMITZ, N.; SCHUSTER, T. R.; SEELE, J.; SEGER, J.; SELYUZHENKOV, I.; SEYBOTH, P.; SHAHALIEV, E.; SHAO, M.; SHARMA, M.; SHI, S. S.; SHI, X. H.; SICHTERMANN, E. P.; SIMON, F.; SINGARAJU, R. N.; SKOBY, M. J.; SMIRNOV, N.; SORENSEN, P.; SOWINSKI, J.; SPINKA, H. M.; SRIVASTAVA, B.; STANISLAUS, T. D. S.; STASZAK, D.; STEVENS, J. R.; STOCK, R.; STRIKHANOV, M.; STRINGFELLOW, B.; Suaide, Alexandre Alarcon do Passo; SUAREZ, M. C.; SUBBA, N. L.; SUMBERA, M.; SUN, X. M.; SUN, Y.; SUN, Z.; SURROW, B.; SVIRIDA, D. N.; SYMONS, T. J. M.; Szanto de Toledo, Alejandro; TAKAHASHI, J.; TANG, A. H.; TANG, Z.; TARINI, L. H.; TARNOWSKY, T.; THEIN, D.; THOMAS, J. H.; TIAN, J.; TIMMINS, A. R.; TIMOSHENKO, S.; TLUSTY, D.; TOKAREV, M.; TRAM, V. N.; TRENTALANGE, S.; TRIBBLE, R. E.; TSAI, O. D.; ULERY, J.; ULLRICH, T.; UNDERWOOD, D. G.; BUREN, G. Van; LEEUWEN, M. van; NIEUWENHUIZEN, G. van; VANFOSSEN JR., J. A.; VARMA, R.; VASCONCELOS, G. M. S.; VASILIEV, A. N.; VIDEBAEK, F.; VIYOGI, Y. P.; VOKAL, S.; VOLOSHIN, S. A.; WADA, M.; WALKER, M.; WANG, F.; WANG, G.; WANG, H.; WANG, J. S.; WANG, Q.; WANG, X. L.; WANG, Y.; WEBB, G.; WEBB, J. C.; WESTFALL, G. D.; WHITTEN JR., C.; WIEMAN, H.; WINGFIELD, E.; WISSINK, S. W.; WITT, R.; WU, Y.; XIE, W.; XU, N.; XU, Q. H.; XU, W.; XU, Y.; XU, Z.; XUE, L.; YANG, Y.; YEPES, P.; YIP, K.; YOO, I. -K.; YUE, Q.; ZAWISZA, M.; ZBROSZCZYK, H.; ZHAN, W.; ZHANG, S.; ZHANG, W. M.; ZHANG, X. P.; ZHANG, Y.; ZHANG, Z. P.; ZHAO, J.; ZHONG, C.; ZHOU, J.; ZHOU, W.; ZHU, X.; ZHU, Y. H.; ZOULKARNEEV, R.; ZOULKARNEEVA, Y.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO
Data(s)

18/04/2012

18/04/2012

2010
Resumo

We present the results of an elliptic flow, v(2), analysis of Cu + Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at root s(NN) = 62.4 and 200 GeV. Elliptic flow as a function of transverse momentum, v(2)(p(T)), is reported for different collision centralities for charged hadrons h(+/-) and strangeness-ontaining hadrons K(S)(0), Lambda, Xi, and phi in the midrapidity region vertical bar eta vertical bar < 1.0. Significant reduction in systematic uncertainty of the measurement due to nonflow effects has been achieved by correlating particles at midrapidity, vertical bar eta vertical bar < 1.0, with those at forward rapidity, 2.5 < vertical bar eta vertical bar < 4.0. We also present azimuthal correlations in p + p collisions at root s = 200 GeV to help in estimating nonflow effects. To study the system-size dependence of elliptic flow, we present a detailed comparison with previously published results from Au + Au collisions at root s(NN) = 200 GeV. We observe that v(2)(p(T)) of strange hadrons has similar scaling properties as were first observed in Au + Au collisions, that is, (i) at low transverse momenta, p(T) < 2 GeV/c, v(2) scales with transverse kinetic energy, m(T) - m, and (ii) at intermediate p(T), 2 < p(T) < 4 GeV/c, it scales with the number of constituent quarks, n(q.) We have found that ideal hydrodynamic calculations fail to reproduce the centrality dependence of v(2)(p(T)) for K(S)(0) and Lambda. Eccentricity scaled v(2) values, v(2)/epsilon, are larger in more central collisions, suggesting stronger collective flow develops in more central collisions. The comparison with Au + Au collisions, which go further in density, shows that v(2)/epsilon depends on the system size, that is, the number of participants N(part). This indicates that the ideal hydrodynamic limit is not reached in Cu + Cu collisions, presumably because the assumption of thermalization is not attained.

US DOE Office of Science

US NSF National Science Foundation

Sloan Foundation

Deutsche Forschungsgemeinschaft - DFG

Centre National de la Recherche Scientifique - CNRS[CNRS/IN2P3]

STFC

EPSRC of the United Kingdom

FAPESP CNPq of Brazil

MES Ministry of Education and Science of the Russian Federation

National Natural Science Foundation of China (NNSFC)

CAS of China

MoST of China

MoE of China

GACR and MSMT of the Czech Republic

FOM and NWO of the Netherlands

(DAE) Department of Atomic Energy, India

(DST) Department of Science and Technology, India

(CSIR) Council of Scientific and Industrial Research - India

Polish Ministry of Science and Higher Education

Korea Research Foundation (KRF)

Ministry of Science, Education and Sports of the Republic of Croatia

MES Russian Ministry of Science and Technology

RosAtom of Russia
Identificador

PHYSICAL REVIEW C, v.81, n.4, 2010

0556-2813

http://producao.usp.br/handle/BDPI/16303

10.1103/PhysRevC.81.044902

http://dx.doi.org/10.1103/PhysRevC.81.044902
Idioma(s)

eng
Publicador

AMER PHYSICAL SOC
Relação

Physical Review C
Direitos

restrictedAccess

Copyright AMER PHYSICAL SOC
Palavras-Chave #QUARK-GLUON PLASMA #HEAVY-ION COLLISIONS #RELATIVISTIC NUCLEAR COLLISIONS #PHI-MESON PRODUCTION #ANISOTROPIC FLOW #PHASE-TRANSITION #CENTRALITY DEPENDENCE #SIGNATURE #STAR #COLLABORATION #Physics, Nuclear
Tipo

article

original article

publishedVersion
Acesso ao item digital