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Scaling properties of hyperon production in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV
Authors :
Adams, J. Aggarwal, M.M. Ahammed, Z. Amonett, J. Anderson, B.D. Anderson, M. Arkhipkin, D. Averichev, G.S. Bai, Y. Balewski, J. Barannikova, O. Barnby, L.S. Baudot, J. Bekele, S. Belaga, V.V. Bellingeri-Laurikainen, A. Bellwied, R. Bezverkhny, B.I. Bhardwaj, S. Bhasin, A. Bhati, A.K. Bichsel, H. Bielcik, J. Bielcikova, J. Bland, L.C. Blyth, C.O. Blyth, S.L. Bonner, B.E. Botje, M. Bouchet, J. Brandin, A.V. Bravar, A. Bystersky, M. Cadman, R.V. Cai, X.Z. Caines, H. Sanchez, M.C.D. Castillo, J. Catu, O. Cebra, D. Chajecki, Z. Chaloupka, P. Chattopadhyay, S. Chen, H.F. Chen, J.H. Chen, Y. Cheng, J. Cherney, M. Chikanian, A. Choi, H.A. Christie, W. Coffin, J.P. Cormier, T.M. Cosentino, M.R. Cramer, J.G. Crawford, H.J. Das, D. Das, S. Daugherity, M. De Moura, M.M. Dedovich, T.G. Dephillips, M. Derevschikov, A.A. Didenko, L. Dietel, T. Djawotho, P. Dogra, S.M. Dong, W.J. Dong, X. Draper, J.E. Du, F. Dunin, V.B. Dunlop, J.C. Mazumdar, M.R.D. Eckardt, V. Edwards, W.R. Efimov, L.G. Emelianov, V. Engelage, J. Eppley, G. Erazmus, B. Estienne, Magali Fachini, P. Fatemi, R. Fedorisin, J. Filimonov, K. Filip, P. Finch, E. Fine, V. Fisyak, Y. Fu, J. Gagliardi, C.A. Gaillard, L. Gans, J. Ganti, M.S. Ghazikhanian, V. Ghosh, P. Gonzalez, J.E. Gorbunov, Y.G. Gos, H. Grebenyuk, O. Grosnick, D. Guertin, S.M. Guimaraes, K.S.F.F. Guo, Y. Gupta, N. Gutierrez, T.D. Haag, B. Hallman, T.J. Hamed, A. Harris, J.W. He, W. Heinz, M. Henry, T.W. Hepplemann, S. Hippolyte, B. Hirsch, A. Hjort, E. Hoffmann, G.W. Horner, M.J. Huang, H.Z. Huang, S.L. Hughes, E.W. Humanic, T.J. Igo, G. Jacobs, P. Jacobs, W.W. Jakl, P. Jia, F. Jiang, H. Jones, P.G. Judd, E.G. Kabana, S. Kang, K. Kapitan, J. Kaplan, M. Keane, D. Kechechyan, A. Khodyrev, V.Y. Kim, B.C. Kiryluk, J. Kisiel, A. Kislov, E.M. Klein, S.R. Koetke, D.D. Kollegger, T. Kopytine, M. Kotchenda, L. Kouchpil, V. Kowalik, K.L. Kramer, M. Kravtsov, P. Kravtsov, V.I. Krueger, K. Kuhn, C. Kulikov, A.I. Kumar, A. Kuznetsov, A.A. Lamont, M.A.C. Landgraf, J.M. Lange, S. Lapointe, S. Laue, F. Lauret, J. Lebedev, A. Lednicky, R. Lee, C.H. Lehocka, S. LeVine, M.J. Li, C. Li, Q. Li, Y. Lin, G. Lindenbaum, S.J. Lisa, M.A. Liu, Franklin Liu, Hong Liu, J. Liu, L. Liu, Z. Ljubicic, T. Llope, W.J. Long, H. Longacre, R.S. Lopez-Noriega, M. Love, W.A. Lu, Y. Ludlam, T. Lynn, D. Ma, G.L. Ma, J.G. Ma, Y.G. Magestro, D. Mahapatra, D.P. Majka, R. Mangotra, L.K. Manweiler, R. Margetis, S. Markert, C. Martin, Lilian Matis, H.S. Matulenko, Y.A. McClain, C.J. McShane, T.S. Melnick, Y. Meschanin, A. Miller, M.L. Minaev, N.G. Mioduszewski, S. Mironov, C. Mischke, A. Mishra, D.K. Mitchell, J. Mohanty, B. Molnar, L. Moore, C.F. Morozov, D.A. Munhoz, M.G. Nandi, B.K. Nattrass, C. Nayak, T.K. Nelson, J.M. Netrakanti, P.K. Nikitin, V.A. Nogach, L.V. Nurushev, S.B. Odyniec, G. Ogawa, A. Okorokov, V. Oldenburg, M. Olson, D. Pachr, M. Pal, S.K. Panebratsev, Y. Panitkin, S.Y. Pavlinov, A.I. Pawlak, T. Peitzmann, T. Perevoztchikov, V. Perkins, C. Peryt, W. Petrov, V.A. Phatak, S.C. Picha, R. Planinic, M. Pluta, J. Poljak, N. Porile, N. Porter, J. Poskanzer, A.M. Potekhin, M. Potrebenikova, E. Potukuchi, B.V.K.S. Prindle, D. Pruneau, C. Putschke, J. Rakness, G. Raniwala, R. Raniwala, S. Ray, R.L. Razin, S.V. Reinnarth, J. Relyea, D. Retiere, F. Ridiger, A. Ritter, H.G. Roberts, J.B. Rogachevskiy, O.V. Romero, J.L. Rose, A. Roy, C. Ruan, L. Russcher, M.J. Sahoo, R. Sakrejda, I. Salur, S. Sandweiss, J. Sarsour, M. Sazhin, P.S. Schambach, J. Scharenberg, R.P. Schmitz, N. Schweda, K. Seger, J. Selyuzhenkov, I. Seyboth, P. Shabetai, Alexandre Shahaliev, E. Shao, M. Sharma, M. Shen, W.Q. Shimanskiy, S.S. Sichtermann, E. Simon, F. Singaraju, R.N. Smirnov, N. Snellings, R. Sood, G. Sorensen, P. Sowinski, J. Speltz, J. Spinka, H.M. Srivastava, B. Stadnik, A. Stanislaus, T.D.S. Stock, R. Stolpovsky, A. Strikhanov, M. Stringfellow, B. Suaide, A.A.P. Sugarbaker, E. Sumbera, M. Sun, Z. Surrow, B. Swanger, M. Symons, T.J.M. De Toledo, A.S. Tai, A. Takahashi, J. Tang, A.H. Tarnowsky, T. Thein, D. Thomas, J.H. Timmins, A.R. Timoshenko, S. Tokarev, M. Trainor, T.A. Trentalange, S. Tribble, R.E. Tsai, O.D. Ulery, J. Ullrich, T. Underwood, D.G. Van Buren, G. Van Der Kolk, N. Van Leeuwen, M. Van Der Molen, A.M. Varma, R. Vasilevski, I.M. Vasiliev, A.N. Vernet, R. Vigdor, S.E. Viyogi, Y.P. Vokal, S. Voloshin, S.A. Waggoner, W.T. Wang, F. Wang, Gang Wang, J.S. Wang, X.L. Wang, Y. Watson, J.W. Webb, J.C. Westfall, G.D. Wetzler, A. Whitten, C. Wieman, H. Wissink, S.W. Witt, R. Wood, J. Wu, J. Xu, N. Xu, Q.H. Xu, Z. Yepes, P. Yoo, I.K. Yurevich, V.I. Zhan, W. Zhang, H. Zhang, W.M. Zhang, Y. Zhang, Z.P. Zhao, Y. Zhong, C. Zoulkarneev, R. Zoulkarneeva, Y. Zubarev, A.N. Zuo, J.X. Département Recherches Subatomiques (DRS-IPHC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Laboratoire SUBATECH Nantes (SUBATECH) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes) STAR Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physical Review Letters, Physical Review Letters, American Physical Society, 2007, 98, pp.062301. ⟨10.1103/PhysRevLett.98.062301⟩
Publication Year :
2007
Publisher :
HAL CCSD, 2007.
Abstract
We present the scaling properties of Lambda, Xi, Omega and their anti-particles produced at mid-rapidity in Au+Au collisions at RHIC at sqrt(s_NN) = 200 GeV. The yield of multi-strange baryons per participant nucleon increases from peripheral to central collisions more rapidly than the Lambda yield, which appears to correspond to an increasing strange quark density of matter produced. The value of the strange phase space occupancy factor gamma_s, obtained from a thermal model fit to the data, approaches unity for the most central collisions. We also show that the nuclear modification factors, R_CP, of Lambda and Xi are consistent with each other and with that of protons in the transverse momentum range 2.0 < p_T < 5.0 GeV/c. This scaling behaviour is consistent with a scenario of hadron formation from constituent quark degrees of freedom through quark recombination or coalescence.<br />6 pages, 3 figures, submitted to PRL
Details
Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters, Physical Review Letters, American Physical Society, 2007, 98, pp.062301. ⟨10.1103/PhysRevLett.98.062301⟩
Accession number :
edsair.doi.dedup.....a04f2f44aa135a353203b0690a5d965a
Full Text :
https://doi.org/10.1103/PhysRevLett.98.062301⟩