Midrapidity Antiproton-to-Proton Ratio from Au+Au Collisions at sqrt[sNN] = 130 GeV

We report results on the ratio of midrapidity antiproton-to-proton yields in Au+Au collisions at sqrt[sNN] = 130 GeV per nucleon pair as measured by the STAR experiment at RHIC. Within the rapidity and transverse momentu
We report results on the ratio of midrapidity antiproton-to-proton yields in Au+Au collisions at sqrt[sNN] = 130 GeV per nucleon pair as measured by the STAR experiment at RHIC. Within the rapidity and transverse momentum range of | y|<0.5 and 0.4<pt<1.0 GeV/c, the ratio is essentially independent of either transverse momentum or rapidity, with an average of 0.65±0.01(stat)±0.07(syst) for minimum bias collisions. Within errors, no strong centrality dependence is observed. The results indicate that at this RHIC energy, although the p-p-bar pair production becomes important at midrapidity, a significant excess of baryons over antibaryons is still present.
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alle Autoren: C. Adler11, Z. Ahammed25, C. Allgower12, M. Anderson5, G. S. Averichev9, J. Balewski12, O. Barannikova9,25, L. S. Barnby15, J. Baudot13, S. Bekele22, V. V. Belaga9, R. Bellwied32, J. Berger11, H. Bichsel31,
alle Autoren: C. Adler11, Z. Ahammed25, C. Allgower12, M. Anderson5, G. S. Averichev9, J. Balewski12, O. Barannikova9,25, L. S. Barnby15, J. Baudot13, S. Bekele22, V. V. Belaga9, R. Bellwied32, J. Berger11, H. Bichsel31, L. C. Bland12, C. O. Blyth3, B. E. Bonner26, R. Bossingham16, A. Boucham28, A. Brandin20, H. Caines22, M. Calderón de la Barca Sánchez33, A. Cardenas25, J. Carroll16, J. Castillo28, M. Castro32, D. Cebra5, S. Chattopadhyay32, M. L. Chen2, Y. Chen6, S. P. Chernenko9, M. Cherney8, A. Chikanian33, B. Choi29, W. Christie2, J. P. Coffin13, L. Conin28, T. M. Cormier32, J. G. Cramer31, H. J. Crawford4, M. DeMello26, W. S. Deng15, A. A. Derevschikov24, L. Didenko2, J. E. Draper5, V. B. Dunin9, J. C. Dunlop33, V. Eckardt18, L. G. Efimov9, V. Emelianov20, J. Engelage4, G. Eppley26, B. Erazmus28, P. Fachini27, M. I. Ferguson6, E. Finch33, Y. Fisyak2, D. Flierl11, K. J. Foley2, N. Gagunashvili9, J. Gans33, M. Germain13, F. Geurts26, V. Ghazikhanian6, J. Grabski30, O. Grachov32, D. Greiner16, V. Grigoriev20, E. Gushin20, T. J. Hallman2, D. Hardtke16, J. W. Harris33, M. Heffner5, S. Heppelmann23, T. Herston25, B. Hippolyte13, A. Hirsch25, E. Hjort25, G. W. Hoffmann29, M. Horsley33, H. Z. Huang6, T. J. Humanic22, H. Hümmler18, G. J. Igo6, A. Ishihara29, Yu. I. Ivanshin10, P. Jacobs16, W. W. Jacobs12, M. Janik30, I. Johnson16, P. G. Jones3, E. Judd4, M. Kaneta16, M. Kaplan7, D. Keane15, A. Khodinov20, A. Kisiel30, J. Klay5, S. R. Klein16, A. Klyachko12, A. S. Konstantinov24, L. Kotchenda20, A. D. Kovalenko9, M. Kramer21, P. Kravtsov20, K. Krueger1, C. Kuhn13, A. I. Kulikov9, G. J. Kunde33, C. L. Kunz7, R. Kh. Kutuev10, A. A. Kuznetsov9, J. Lamas-Valverde26, M. A. C. Lamont3, J. M. Landgraf2, S. Lange11, C. P. Lansdell29, B. Lasiuk33, F. Laue22, A. Lebedev2, T. LeCompte1, V. M. Leontiev24, P. Leszczynski30, M. J. LeVine2, Q. Li32, Q. Li16, S. J. Lindenbaum21, M. A. Lisa22, T. Ljubicic2, W. J. Llope26, G. LoCurto18, H. Long6, R. S. Longacre2, M. Lopez-Noriega22, W. A. Love2, D. Lynn2, L. Madansky14*, R. Majka33, A. Maliszewski30, S. Margetis15, L. Martin28, J. Marx16, H. S. Matis16, Yu. A. Matulenko24, T. S. McShane8, Yu. Melnick24, A. Meschanin24, Z. Milosevich7, N. G. Minaev24, J. Mitchell14, V. A. Moiseenko10, D. Moltz16, C. F. Moore29, V. Morozov16, M. M. de Moura27, M. G. Munhoz27, G. S. Mutchler26, J. M. Nelson3, P. Nevski2, V. A. Nikitin10, L. V. Nogach24, B. Norman15, S. B. Nurushev24, J. Nystrand16, G. Odyniec16, A. Ogawa23, C. A. Ogilvie17, M. Oldenburg18, D. Olson16, G. Paic22, S. U. Pandey32, Y. Panebratsev9, S. Y. Panitkin15, A. I. Pavlinov32, T. Pawlak30, V. Perevoztchikov2, W. Peryt30, V. A. Petrov10, W. Pinganaud28, E. Platner26, J. Pluta30, N. Porile25, J. Porter2, A. M. Poskanzer16, E. Potrebenikova9, D. Prindle31, C. Pruneau32, S. Radomski30, G. Rai16, O. Ravel28, R. L. Ray29, S. V. Razin9,12, D. Reichhold8, J. Reid31, F. Retiere16, A. Ridiger20, H. G. Ritter16, J. B. Roberts26, O. V. Rogachevski9, C. Roy28, D. Russ7, V. Rykov32, I. Sakrejda16, J. Sandweiss33, A. C. Saulys2, I. Savin10, J. Schambach29, R. P. Scharenberg25, N. Schmitz18, L. S. Schroeder16, A. Schüttauf18, J. Seger8, D. Seliverstov20, P. Seyboth18, K. E. Shestermanov24, S. S. Shimanskii9, V. S. Shvetcov10, G. Skoro9, N. Smirnov33, R. Snellings16, J. Sowinski12, H. M. Spinka1, B. Srivastava25, E. J. Stephenson12, R. Stock11, A. Stolpovsky32, M. Strikhanov20, B. Stringfellow25, H. Stroebele11, C. Struck11, A. A. P. Suaide2,7, E. Sugarbaker22, C. Suire13, T. J. M. Symons1,6, A. Szanto de Toledo27, P. Szarwas30, J. Takahashi27, A. H. Tang15, J. H. Thomas16, V. Tikhomirov20, T. Trainor31, S. Trentalange6, M. Tokarev9, M. B. Tonjes19, V. Trofimov20, O. Tsai6, K. Turner2, T. Ullrich33, D. G. Underwood1, G. Van Buren2, A. M. VanderMolen19, A. Vanyashin16, I. M. Vasilevski10, A. N. Vasiliev24, S. E. Vigdor12, S. A. Voloshin32, F. Wang25, H. Ward29, R. Wells22, T. Wenaus2, G. D. Westfall19, C. Whitten, Jr.6, H. Wieman16, R. Willson22, S. W. Wissink12, R. Witt15, N. Xu16, Z. Xu33, A. E. Yakutin24, E. Yamamoto6, J. Yang6, P. Yepes26, A. Yokosawa1, V. I. Yurevich9, Y. V. Zanevski9, J. Zhang16, W. M. Zhang15, R. Zoulkarneev10, and A. N. Zubarev9
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Metadaten
Author:Clemens Adler, Z. Ahammed, C. Allgower, et al., STAR Collaboration ??, Reinhard Stock
URN:urn:nbn:de:hebis:30-18764
Document Type:Article
Language:English
Date of Publication (online):2005/10/14
Year of first Publication:2001
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/10/14
Source:Phys. Rev. Lett. 86, 4778-4782 (2001), ©2001 The American Physical Society, http://link.aps.org/abstract/PRL/v86/p4778
Institutes:Physik
Dewey Decimal Classification:530 Physik
PACS-Classification:25.75.Ld Collective flow
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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