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Mass, quark-number, and sNN dependence of the second and fourth flow harmonics in ultrarelativistic nucleus-nucleus collisions

  • B. I. Abelev
  • , M. M. Aggarwal
  • , Z. Ahammed
  • , B. D. Anderson
  • , D. Arkhipkin
  • , G. S. Averichev
  • , Y. Bai
  • , J. Balewski
  • , O. Barannikova
  • , L. S. Barnby
  • , J. Baudot
  • , S. Baumgart
  • , S. Bekele
  • , V. V. Belaga
  • , A. Bellingeri-Laurikainen
  • , R. Bellwied
  • , F. Benedosso
  • , R. R. Betts
  • , S. Bhardwaj
  • , A. Bhasin
  • A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, S. L. Blyth, M. Bombara, B. E. Bonner, M. Botje, J. Bouchet, A. V. Brandin, A. Bravar, T. P. Burton, M. Bystersky, R. V. Cadman, X. Z. Cai, H. Caines, M. Calderón Delabarca Sánchez, J. Callner, J. Castillo, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, S. U. Chung, J. P. Coffin, T. M. Cormier, M. R. Cosentino, J. G. Cramer, H. J. Crawford, D. Das, S. Das, S. Dash, M. Daugherity, M. M.De Moura, T. G. Dedovich, M. Dephillips, A. A. Derevschikov, L. Didenko, T. Dietel, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, F. Du, V. B. Dunin, J. C. Dunlop, M. R.Dutta Mazumdar, V. Eckardt, W. R. Edwards, L. G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, R. Fatemi, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, V. Fine, Y. Fisyak, J. Fu, C. A. Gagliardi, L. Gaillard, M. S. Ganti, E. Garcia-Solis, V. Ghazikhanian, P. Ghosh, Y. G. Gorbunov, H. Gos, O. Grebenyuk, D. Grosnick, S. M. Guertin, K. S.F.F. Guimaraes, N. Gupta, B. Haag, T. J. Hallman, A. Hamed, J. W. Harris, W. He, M. Heinz, T. W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. Hofman, R. Hollis, M. J. Horner, H. Z. Huang, S. L. Huang, E. W. Hughes, T. J. Humanic, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, F. Jia, P. G. Jones, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, D. Kettler, V. Yu Khodyrev, B. C. Kim, J. Kiryluk, A. Kisiel, E. M. Kislov, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K. L. Kowalik, P. Kravtsov, V. I. Kravtsov, K. Krueger, C. Kuhn, A. I. Kulikov, A. Kumar, P. Kurnadi, A. A. Kuznetsov, M. A.C. Lamont, J. M. Landgraf, S. Lange, S. Lapointe, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C. H. Lee, S. Lehocka, M. J. Levine, C. Li, Q. Li, Y. Li, G. Lin, X. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, Z. Liu, T. Ljubicic, W. J. Llope, H. Long, R. S. Longacre, W. A. Love, Y. Lu, T. Ludlam, D. Lynn, G. L. Ma, J. G. Ma, Y. G. Ma, D. Magestro, D. P. Mahapatra, R. Majka, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, H. S. Matis, Yu A. Matulenko, C. J. McClain, T. S. McShane, Yu Melnick, A. Meschanin, J. Millane, M. L. Miller, N. G. Minaev, S. Mioduszewski, C. Mironov, A. Mischke, D. K. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C. F. Moore, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, C. Nepali, P. K. Netrakanti, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, M. Pachr, S. K. Pal, Y. Panebratsev, A. I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, M. Planinic, J. Pluta, N. Poljak, N. Porile, J. Porter, A. M. Poskanzer, M. Potekhin, E. Potrebenikova, B. V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, I. A. Qattan, G. Rakness, R. Raniwala, S. Raniwala, R. L. Ray, S. V. Razin, J. Reinnarth, D. Relyea, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, P. S. Sazhin, J. Schambach, R. P. Scharenberg, N. Schmitz, K. Schweda, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, W. Q. Shen, S. S. Shimanskiy, E. P. Sichtermann, F. Simon, R. N. Singaraju, N. Smirnov, R. Snellings, P. Sorensen, J. Sowinski, J. Speltz, H. M. Spinka, B. Srivastava, A. Stadnik, T. D.S. Stanislaus, D. Staszak, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, A. A.P. Suaide, M. C. Suarez, N. L. Subba, E. Sugarbaker, M. Sumbera, Z. Sun, B. Surrow, M. Swanger, T. J.M. Symons, A. Szanto De Toledo, J. Takahashi, A. H. Tang, T. Tarnowsky, J. H. Thomas, A. R. Timmins, S. Timoshenko, M. Tokarev, T. A. Trainor, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, N. Van Der Kolk, M. Van Leeuwen, A. M.Vander Molen, R. Varma, I. M. Vasilevski, A. N. Vasiliev, R. Vernet, S. E. Vigdor, Y. P. Viyogi, S. Vokal, S. A. Voloshin, W. T. Waggoner, F. Wang, G. Wang, J. S. Wang, X. L. Wang, Y. Wang, J. W. Watson, J. C. Webb, G. D. Westfall, A. Wetzler, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, J. Wu, N. Xu, Q. H. Xu, Z. Xu, P. Yepes, I. K. Yoo, V. I. Yurevich, W. Zhan, H. Zhang, W. M. Zhang, Y. Zhang, Z. P. Zhang, Y. Zhao, C. Zhong, J. Zhou, R. Zoulkarneev, Y. Zoulkarneeva, A. N. Zubarev, J. X. Zuo
  • Yale University
  • Panjab University
  • Variable Energy Cyclotron Centre India
  • Kent State University
  • Particle Physics Laboratory (JINR)
  • Utrecht University
  • Indiana University Bloomington
  • University of Illinois at Chicago
  • University of Birmingham
  • Institut de Recherches Subatomiques
  • Ohio State University
  • SUBATECH
  • Wayne State University
  • University of Rajasthan
  • University of Jammu
  • University of Washington
  • Brookhaven National Laboratory
  • Lawrence Berkeley National Laboratory
  • Rice University
  • National Research Nuclear University MEPhI
  • University Prague
  • Argonne National Laboratory
  • Shanghai Institute of Applied Physics, Chinese Academy of Sciences
  • University of California, Davis
  • University of Science and Technology of China
  • Tsinghua University
  • Creighton University
  • University of São Paulo
  • University of California, Berkeley
  • Institute of Physics Bhubaneswar
  • The University of Texas at Austin
  • Institute of High Energy Physics
  • J. W. Goethe University Frankfurt am Main
  • Texas AM University CE/TTI 503-C
  • Max-Planck-Institut für Physik
  • Massachusetts Institute of Technology
  • CCNU (HZNU)
  • UCLA
  • Warsaw University of Technology
  • Valparaiso University
  • Pennsylvania State University
  • Purdue University
  • California Institute of Technology
  • Institute of Modern Physics Chinese Academy of Sciences
  • Carnegie Mellon University
  • Pusan National University
  • City Coll of New York
  • IIT Bombay
  • University of Zagreb
  • Michigan State University

Research output: Contribution to journalArticlepeer-review

135 Scopus citations

Abstract

We present STAR measurements of the azimuthal anisotropy parameter v2 for pions, kaons, protons, Λ,Λ̄,Ξ+Ξ̄, and Ω+Ω̄, along with v4 for pions, kaons, protons, and Λ+Λ̄ at midrapidity for Au+Au collisions at sNN=62.4 and 200 GeV. The v2(pT) values for all hadron species at 62.4 GeV are similar to those observed in 130 and 200 GeV collisions. For observed kinematic ranges, v2 values at 62.4, 130, and 200 GeV are as little as 10-15% larger than those in Pb+Pb collisions at sNN=17.3 GeV. At intermediate transverse momentum (pT from 1.5-5 GeV/c), the 62.4 GeV v2(pT) and v4(pT) values are consistent with the quark-number scaling first observed at 200 GeV. A four-particle cumulant analysis is used to assess the nonflow contributions to pions and protons and some indications are found for a smaller nonflow contribution to protons than pions. Baryon v2 is larger than antibaryon v2 at 62.4 and 200 GeV, perhaps indicating either that the initial spatial net-baryon distribution is anisotropic, that the mechanism leading to transport of baryon number from beam- to midrapidity enhances v2 or that antibaryon and baryon annihilation is larger in the in-plane direction.

Original languageBritish English
Article number054906
JournalPhysical Review C - Nuclear Physics
Volume75
Issue number5
DOIs
StatePublished - 10 May 2007

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