Skip to main navigation Skip to search Skip to main content

Charged and strange hadron elliptic flow in Cu+Cu collisions at √sNN=62.4 and 200 GeV

  • B. I. Abelev
  • , M. M. Aggarwal
  • , Z. Ahammed
  • , A. V. Alakhverdyants
  • , I. Alekseev
  • , B. D. Anderson
  • , D. Arkhipkin
  • , G. S. Averichev
  • , J. Balewski
  • , L. S. Barnby
  • , S. Baumgart
  • , D. R. Beavis
  • , R. Bellwied
  • , M. J. Betancourt
  • , R. R. Betts
  • , A. Bhasin
  • , A. K. Bhati
  • , H. Bichsel
  • , J. Bielcik
  • , J. Bielcikova
  • B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón Dela Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J.M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. Dephillips, A. A. Derevschikov, R. Derradi De Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, A. Hamed, L. X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A.C. Lamont, J. M. Landgraf, S. Lapointe, J. Lauret, A. Lebedev, R. Lednicky, C. H. Lee, J. H. Lee, W. Leight, M. J. Levine, C. Li, L. Li, N. Li, W. Li, X. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V.K.S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, X. H. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D.S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A.P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J.M. Symons, A. Szanto De Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. Van Leeuwen, G. Van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M.S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I. K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, Y. Zoulkarneeva
  • University of Illinois at Chicago
  • Panjab University
  • Variable Energy Cyclotron Centre India
  • Joint Institute for Nuclear Research
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Kent State University
  • Brookhaven National Laboratory
  • Massachusetts Institute of Technology
  • University of Birmingham
  • Yale University
  • Wayne State University
  • University of Jammu
  • University of Washington
  • Czech Technical University in Prague
  • Czech Academy of Sciences
  • University of California at Los Angeles
  • Rice University
  • Utrecht University
  • Moscow Engineering Physics Institute
  • Argonne National Laboratory
  • Old Dominion University
  • Chinese Academy of Sciences
  • University of California at Davis
  • Texas A&M University
  • Ohio State University
  • University of Science and Technology of China
  • Central China Normal University
  • Tsinghua University
  • Creighton University
  • Pusan National University
  • University of California at Berkeley
  • Institute of Physics Bhubaneswar
  • University of Texas at Austin
  • Institute for High Energy Physics
  • Universidade Estadual de Campinas
  • Lawrence Berkeley National Laboratory
  • SUBATECH
  • Pennsylvania State University
  • University of Kentucky
  • Valparaiso University
  • Purdue University
  • Indiana University Bloomington
  • Warsaw University of Technology
  • Goethe University Frankfurt
  • Shandong University
  • City University of New York
  • Universidade de São Paulo
  • Indian Institute of Technology Bombay
  • University of Zagreb
  • University of Rajasthan
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • CAS - Institute of Modern Physics
  • Michigan State University
  • United States Naval Academy

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

We present the results of an elliptic flow, v2, analysis of Cu+Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at √sNN=62.4 and 200 GeV. Elliptic flow as a function of transverse momentum, v2(pT), is reported for different collision centralities for charged hadrons h± and strangeness-ontaining hadrons KS0, Λ, Ξ, and Φ in the midrapidity region |η|<1.0. Significant reduction in systematic uncertainty of the measurement due to nonflow effects has been achieved by correlating particles at midrapidity, |η|<1.0, with those at forward rapidity, 2.5<|η|<4.0. We also present azimuthal correlations in p+p collisions at √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 √sNN=200 GeV. We observe that v2(pT) of strange hadrons has similar scaling properties as were first observed in Au+Au collisions, that is, (i) at low transverse momenta, pT<2GeV/c, v2 scales with transverse kinetic energy, mT-m, and (ii) at intermediate pT, 2<pT<4GeV/c, it scales with the number of constituent quarks, nq. We have found that ideal hydrodynamic calculations fail to reproduce the centrality dependence of v2(pT) for KS0 and Λ. Eccentricity scaled v2 values, v2/E, 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 v2/E depends on the system size, that is, the number of participants Npart. This indicates that the ideal hydrodynamic limit is not reached in Cu+Cu collisions, presumably because the assumption of thermalization is not attained.

Original languageEnglish
Article number044902
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number4
DOIs
StatePublished - Apr 9 2010

Fingerprint

Dive into the research topics of 'Charged and strange hadron elliptic flow in Cu+Cu collisions at √sNN=62.4 and 200 GeV'. Together they form a unique fingerprint.

Cite this