Phys. Rev. C
70,
044901
(2004)
[11 pages]
Centrality and pseudorapidity dependence of charged hadron production at intermediate pT in Au+Au collisions at √sNN=130 GeV
J. Adams et al. STAR Collaboration
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J. Adams2, M. M. Aggarwal28, Z. Ahammed42, J. Amonett19, B. D. Anderson19, D. Arkhipkin12, G. S. Averichev11, Y. Bai26, J. Balewski16, O. Barannikova31, L. S. Barnby2, J. Baudot17, S. Bekele27, V. V. Belaga11, R. Bellwied45, J. Berger13, B. I. Bezverkhny47, S. Bharadwaj32, V. S. Bhatia28, H. Bichsel44, A. Billmeier45, L. C. Bland3, C. O. Blyth2, B. E. Bonner33, M. Botje26, A. Boucham37, A. Brandin24, A. Bravar3, M. Bystersky10, R. V. Cadman1, X. Z. Cai36, H. Caines47, M. Calderón de la Barca Sánchez3, J. Carroll20, J. Castillo20, D. Cebra6, P. Chaloupka10, S. Chattopdhyay42, H. F. Chen35, Y. Chen7, J. Cheng40, M. Cherney9, A. Chikanian47, W. Christie3, J. P. Coffin17, T. M. Cormier45, J. G. Cramer44, H. J. Crawford5, D. Das42, S. Das42, M. M. de Moura34, A. A. Derevschikov30, L. Didenko3, T. Dietel13, W. J. Dong7, X. Dong35, J. E. Draper6, F. Du47, A. K. Dubey14, V. B. Dunin11, J. C. Dunlop3, M. R. Dutta Mazumdar42, V. Eckardt22, W. R. Edwards20, L. G. Efimov11, V. Emelianov24, J. Engelage5, G. Eppley33, B. Erazmus37, M. Estienne37, P. Fachini3, J. Faivre17, R. Fatemi16, J. Fedorisin11, K. Filimonov20, P. Filip10, E. Finch47, V. Fine3, Y. Fisyak3, K. J. Foley3, K. Fomenko11, J. Fu40, C. A. Gagliardi38, J. Gans47, M. S. Ganti42, L. Gaudichet37, F. Geurts33, V. Ghazikhanian7, P. Ghosh42, J. E. Gonzalez7, O. Grachov45, O. Grebenyuk26, D. Grosnick41, S. M. Guertin7, A. Gupta18, T. D. Gutierrez6, T. J. Hallman3, A. Hamed45, D. Hardtke20, J. W. Harris47, M. Heinz47, T. W. Henry38, S. Hepplemann29, B. Hippolyte47, A. Hirsch31, E. Hjort20, G. W. Hoffmann39, H. Z. Huang7, S. L. Huang35, E. W. Hughes4, T. J. Humanic27, G. Igo7, A. Ishihara39, P. Jacobs20, W. W. Jacobs16, M. Janik43, H. Jiang7, P. G. Jones2, E. G. Judd5, S. Kabana47, K. Kang40, M. Kaplan8, D. Keane19, V. Yu. Khodyrev30, J. Kiryluk21, A. Kisiel43, E. M. Kislov11, J. Klay20, S. R. Klein20, A. Klyachko16, D. D. Koetke41, T. Kollegger13, M. Kopytine19, L. Kotchenda24, M. Kramer25, P. Kravtsov24, V. I. Kravtsov30, K. Krueger1, C. Kuhn17, A. I. Kulikov11, A. Kumar28, C. L. Kunz8, R. Kh. Kutuev12, A. A. Kuznetsov11, M. A. C. Lamont2, J. M. Landgraf3, S. Lange13, F. Laue3, J. Lauret3, A. Lebedev3, R. Lednicky11, S. Lehocka11, M. J. LeVine3, C. Li35, Q. Li45, Y. Li40, S. J. Lindenbaum25, M. A. Lisa27, F. Liu46, L. Liu46, Q. J. Liu44, Z. Liu46, T. Ljubicic3, W. J. Llope33, H. Long7, R. S. Longacre3, M. Lopez-Noriega27, W. A. Love3, Y. Lu46, T. Ludlam3, D. Lynn3, G. L. Ma36, J. G. Ma7, Y. G. Ma36, D. Magestro27, S. Mahajan18, D. P. Mahapatra14, R. Majka47, L. K. Mangotra18, R. Manweiler41, S. Margetis19, C. Markert47, L. Martin37, J. N. Marx20, H. S. Matis20, Yu. A. Matulenko30, C. J. McClain1, T. S. McShane9, F. Meissner20, Yu. Melnick30, A. Meschanin30, M. L. Miller21, Z. Milosevich8, N. G. Minaev30, C. Mironov19, A. Mischke26, D. Mishra14, J. Mitchell33, B. Mohanty42, L. Molnar31, C. F. Moore39, M. J. Mora-Corral22, D. A. Morozov30, V. Morozov20, M. G. Munhoz34, B. K. Nandi42, T. K. Nayak42, J. M. Nelson2, P. K. Netrakanti42, V. A. Nikitin12, L. V. Nogach30, B. Norman19, S. B. Nurushev30, G. Odyniec20, A. Ogawa3, V. Okorokov24, M. Oldenburg20, D. Olson20, S. K. Pal42, Y. Panebratsev11, S. Y. Panitkin3, A. I. Pavlinov45, T. Pawlak43, T. Peitzmann26, V. Perevoztchikov3, C. Perkins5, W. Peryt43, V. A. Petrov12, S. C. Phatak14, R. Picha6, M. Planinic48, J. Pluta43, N. Porile31, J. Porter3, A. M. Poskanzer20, M. Potekhin3, E. Potrebenikova11, B. V. K. S. Potukuchi18, D. Prindle44, C. Pruneau45, J. Putschke22, G. Rai20, G. Rakness29, R. Raniwala32, S. Raniwala32, O. Ravel37, R. L. Ray39, S. V. Razin11, D. Reichhold31, J. G. Reid44, G. Renault37, F. Retiere20, A. Ridiger24, H. G. Ritter20, J. B. Roberts33, O. V. Rogachevskiy11, J. L. Romero6, A. Rose45, C. Roy37, L. Ruan35, R. Sahoo14, I. Sakrejda20, S. Salur47, J. Sandweiss47, I. Savin12, P. S. Sazhin11, J. Schambach39, R. P. Scharenberg31, N. Schmitz22, L. S. Schroeder20, K. Schweda20, J. Seger9, P. Seyboth22, E. Shahaliev11, M. Shao35, W. Shao4, M. Sharma28, W. Q. Shen36, K. E. Shestermanov30, S. S. Shimanskiy11, F. Simon22, R. N. Singaraju42, G. Skoro11, N. Smirnov47, R. Snellings26, G. Sood41, P. Sorensen20, J. Sowinski16, J. Speltz17, H. M. Spinka1, B. Srivastava31, A. Stadnik11, T. D. S. Stanislaus41, R. Stock13, A. Stolpovsky45, M. Strikhanov24, B. Stringfellow31, A. A. P. Suaide34, E. Sugarbaker27, C. Suire3, M. Sumbera10, B. Surrow21, T. J. M. Symons20, A. Szanto de Toledo34, P. Szarwas43, A. Tai7, J. Takahashi34, A. H. Tang26, T. Tarnowsky31, D. Thein7, J. H. Thomas20, S. Timoshenko24, M. Tokarev11, T. A. Trainor44, S. Trentalange7, R. E. Tribble38, O. Tsai7, J. Ulery31, T. Ullrich3, D. G. Underwood1, A. Urkinbaev11, G. Van Buren3, A. M. Vander Molen23, R. Varma15, I. M. Vasilevski12, A. N. Vasiliev30, R. Vernet17, S. E. Vigdor16, Y. P. Viyogi42, S. Vokal11, M. Vznuzdaev24, B. Waggoner9, F. Wang31, G. Wang19, G. Wang4, X. L. Wang35, Y. Wang39, Y. Wang40, Z. M. Wang35, H. Ward39, J. W. Watson19, J. C. Webb16, R. Wells27, G. D. Westfall23, A. Wetzler20, C. Whitten, Jr.7, H. Wieman20, S. W. Wissink16, R. Witt47, J. Wood7, J. Wu35, N. Xu20, Z. Xu35, Z. Xu3, E. Yamamoto20, P. Yepes33, V. I. Yurevich11, Y. V. Zanevsky11, H. Zhang3, W. M. Zhang19, Z. P. Zhang35, P. A. Zolnierczuk16, R. Zoulkarneev12, Y. Zoulkarneeva12, and A. N. Zubarev11 (STAR Collaboration)
1Argonne National Laboratory, Argonne, Illinois 60439, USA
2University of Birmingham, Birmingham, United Kingdom
3Brookhaven National Laboratory, Upton, New York 11973, USA
4California Institute of Technology, Pasedena, California 91125, USA
5University of California, Berkeley, California 94720, USA
6University of California, Davis, California 95616, USA
7University of California, Los Angeles, California 90095, USA
8Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
9Creighton University, Omaha, Nebraska 68178, USA
10Nuclear Physics Institute AS CR, 250 68 Řež/Prague, Czech Republic
11Laboratory for High Energy (JINR), Dubna, Russia
12Particle Physics Laboratory (JINR), Dubna, Russia
13University of Frankfurt, Frankfurt, Germany
14Institute of Physics, Bhubaneswar 751005, India
15Indian Institute of Technology, Mumbai, India
16Indiana University, Bloomington, Indiana 47408, USA
17Institut de Recherches Subatomiques, Strasbourg, France
18University of Jammu, Jammu 180001, India
19Kent State University, Kent, Ohio 44242, USA
20Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
21Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
22Max-Planck-Institut für Physik, Munich, Germany
23Michigan State University, East Lansing, Michigan 48824, USA
24Moscow Engineering Physics Institute, Moscow, Russia
25City College of New York, New York City, New York 10031, USA
26NIKHEF, Amsterdam, The Netherlands
27Ohio State University, Columbus, Ohio 43210, USA
28Panjab University, Chandigarh 160014, India
29Pennsylvania State University, University Park, Pennsylvania 16802, USA
30Institute of High Energy Physics, Protvino, Russia
31Purdue University, West Lafayette, Indiana 47907, USA
32University of Rajasthan, Jaipur 302004, India
33Rice University, Houston, Texas 77251, USA
34Universidade de Sao Paulo, Sao Paulo, Brazil
35University of Science & Technology of China, Anhui 230027, China
36Shanghai Institute of Applied Physics, Shanghai 201800, China
37SUBATECH, Nantes, France
38Texas A&M University, College Station, Texas 77843, USA
39University of Texas, Austin, Texas 78712, USA
40Tsinghua University, Beijing 100084, China
41Valparaiso University, Valparaiso, Indiana 46383, USA
42Variable Energy Cyclotron Centre, Kolkata 700064, India
43Warsaw University of Technology, Warsaw, Poland
44University of Washington, Seattle, Washington 98195, USA
45Wayne State University, Detroit, Michigan 48201, USA
46Institute of Particle Physics, CCNU (HZNU), Wuhan 430079, China
47Yale University, New Haven, Connecticut 06520, USA
48University of Zagreb, Zagreb, HR-10002, Croatia
Received 15 April 2004; published 6 October 2004
We present STAR measurements of charged hadron production as a function of centrality in Au+Au collisions at √sNN=130 GeV. The measurements cover a phase space region of 0.2<pT<6.0 GeV∕c in transverse momentum and −1<η<1 in pseudorapidity. Inclusive transverse momentum distributions of charged hadrons in the pseudorapidity region 0.5<∣η∣<1 are reported and compared to our previously published results for ∣η∣<0.5. No significant difference is seen for inclusive pT distributions of charged hadrons in these two pseudorapidity bins. We measured dN∕dη distributions and truncated mean pT in a region of pT>pTcut, and studied the results in the framework of participant and binary scaling. No clear evidence is observed for participant scaling of charged hadron yield in the measured pT region. The relative importance of hard scattering processes is investigated through binary scaling fraction of particle production.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.70.044901
DOI:
10.1103/PhysRevC.70.044901
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