- Rapid Communication
production at high transverse momenta in and collisions at GeV
B. I. Abelev8, M. M. Aggarwal30, Z. Ahammed47, B. D. Anderson18, D. Arkhipkin12, G. S. Averichev11, J. Balewski22, O. Barannikova8, L. S. Barnby2 et al. (STAR Collaboration)
L. S. Barnby2, J. Baudot16, S. Baumgart52, D. R. Beavis3, R. Bellwied50, F. Benedosso27, M. J. Betancourt22, R. R. Betts8, A. Bhasin17, A. K. Bhati30, H. Bichsel49, J. Bielcik10, J. Bielcikova10, B. Biritz6, L. C. Bland3, M. Bombara2, B. E. Bonner36, M. Botje27, J. Bouchet18, E. Braidot27, A. V. Brandin25, E. Bruna52, S. Bueltmann29, T. P. Burton2, M. Bystersky10, X. Z. Cai40, H. Caines52, M. Calderón de la Barca Sánchez5, O. Catu52, D. Cebra5, R. Cendejas6, M. C. Cervantes42, Z. Chajecki28, P. Chaloupka10, S. Chattopadhyay47, H. F. Chen38, J. H. Chen18, J. Y. Chen51, J. Cheng44, M. Cherney9, A. Chikanian52, K. E. Choi34, W. Christie3, R. F. Clarke42, M. J. M. Codrington42, R. Corliss22, T. M. Cormier50, M. R. Cosentino37, J. G. Cramer49, H. J. Crawford4, D. Das5, S. Dash13, M. Daugherity43, L. C. De Silva50, T. G. Dedovich11, M. DePhillips3, A. A. Derevschikov32, R. Derradi de Souza7, L. Didenko3, P. Djawotho42, S. M. Dogra17, X. Dong21, J. L. Drachenberg42, J. E. Draper5, J. C. Dunlop3, M. R. Dutta Mazumdar47, W. R. Edwards21, L. G. Efimov11, E. Elhalhuli2, M. Elnimr50, V. Emelianov25, J. Engelage4, G. Eppley36, B. Erazmus41, M. Estienne41, L. Eun31, P. Fachini3, R. Fatemi19, J. Fedorisin11, A. Feng51, P. Filip12, E. Finch52, V. Fine3, Y. Fisyak3, C. A. Gagliardi42, L. Gaillard2, D. R. Gangadharan6, M. S. Ganti47, E. J. Garcia-Solis8, A. Geromitsos41, F. Geurts36, V. Ghazikhanian6, P. Ghosh47, Y. N. Gorbunov9, A. Gordon3, O. Grebenyuk21, D. Grosnick46, B. Grube34, S. M. Guertin6, K. S. F. F. Guimaraes37, A. Gupta17, N. Gupta17, W. Guryn3, B. Haag5, T. J. Hallman3, A. Hamed42, J. W. Harris52, W. He15, M. Heinz52, S. Heppelmann31, B. Hippolyte16, A. Hirsch33, E. Hjort21, A. M. Hoffman22, G. W. Hoffmann43, D. J. Hofman8, R. S. Hollis8, H. Z. Huang6, T. J. Humanic28, L. Huo42, G. Igo6, A. Iordanova8, P. Jacobs21, W. W. Jacobs15, P. Jakl10, C. Jena13, F. Jin40, C. L. Jones22, P. G. Jones2, J. Joseph18, E. G. Judd4, S. Kabana41, K. Kajimoto43, K. Kang44, J. Kapitan10, D. Keane18, A. Kechechyan11, D. Kettler49, V. Yu. Khodyrev32, D. P. Kikola21, J. Kiryluk21, A. Kisiel28, S. R. Klein21, A. G. Knospe52, A. Kocoloski22, D. D. Koetke46, M. Kopytine18, W. Korsch19, L. Kotchenda25, V. Kouchpil10, P. Kravtsov25, V. I. Kravtsov32, K. Krueger1, M. Krus10, C. Kuhn16, L. Kumar30, P. Kurnadi6, M. A. C. Lamont3, J. M. Landgraf3, S. LaPointe50, J. Lauret3, A. Lebedev3, R. Lednicky12, C. -H. Lee34, J. H. Lee3, W. Leight22, M. J. LeVine3, C. Li38, N. Li51, Y. Li44, G. Lin52, S. J. Lindenbaum26, M. A. Lisa28, F. Liu51, J. Liu36, L. Liu51, T. Ljubicic3, W. J. Llope36, R. S. Longacre3, W. A. Love3, Y. Lu38, T. Ludlam3, G. L. Ma40, Y. G. Ma40, D. P. Mahapatra13, R. Majka52, O. I. Mall5, L. K. Mangotra17, R. Manweiler46, S. Margetis18, C. Markert43, H. S. Matis21, Yu. A. Matulenko32, D. McDonald36, T. S. McShane9, A. Meschanin32, R. Milner22, N. G. Minaev32, S. Mioduszewski42, A. Mischke27, B. Mohanty47, D. A. Morozov32, M. G. Munhoz37, B. K. Nandi14, C. Nattrass52, T. K. Nayak47, J. M. Nelson2, P. K. Netrakanti33, M. J. Ng4, L. V. Nogach32, S. B. Nurushev32, G. Odyniec21, A. Ogawa3, H. Okada3, V. Okorokov25, D. Olson21, M. Pachr10, B. S. Page15, S. K. Pal47, Y. Pandit18, Y. Panebratsev11, T. Pawlak48, T. Peitzmann27, V. Perevoztchikov3, C. Perkins4, W. Peryt48, S. C. Phatak13, P. Pile3, M. Planinic53, J. Pluta48, D. Plyku29, N. Poljak53, A. M. Poskanzer21, B. V. K. S. Potukuchi17, D. Prindle49, C. Pruneau50, N. K. Pruthi30, P. R. Pujahari14, J. Putschke52, R. Raniwala35, S. Raniwala35, R. L. Ray43, R. Redwine22, R. Reed5, A. Ridiger25, H. G. Ritter21, J. B. Roberts36, O. V. Rogachevskiy11, J. L. Romero5, A. Rose21, C. Roy41, L. Ruan3, M. J. Russcher27, R. Sahoo41, I. Sakrejda21, T. Sakuma22, S. Salur21, J. Sandweiss52, M. Sarsour42, J. Schambach43, R. P. Scharenberg33, N. Schmitz23, J. Seger9, I. Selyuzhenkov15, P. Seyboth23, A. Shabetai16, E. Shahaliev11, M. Shao38, M. Sharma50, S. S. Shi51, X. -H. Shi40, E. P. Sichtermann21, F. Simon23, R. N. Singaraju47, M. J. Skoby33, N. Smirnov52, R. Snellings27, P. Sorensen3, J. Sowinski15, H. M. Spinka1, B. Srivastava33, A. Stadnik11, T. D. S. Stanislaus46, D. Staszak6, M. Strikhanov25, B. Stringfellow33, A. A. P. Suaide37, M. C. Suarez8, N. L. Subba18, M. Sumbera10, X. M. Sun21, Y. Sun38, Z. Sun20, B. Surrow22, T. J. M. Symons21, A. Szanto de Toledo37, J. Takahashi7, A. H. Tang3, Z. Tang38, L. H. Tarini50, T. Tarnowsky24, D. Thein43, J. H. Thomas21, J. Tian40, A. R. Timmins50, S. Timoshenko25, D. Tlusty10, M. Tokarev11, T. A. Trainor49, V. N. Tram21, A. L. Trattner4, S. Trentalange6, R. E. Tribble42, O. D. Tsai6, J. Ulery33, T. Ullrich3, D. G. Underwood1, G. Van Buren3, M. van Leeuwen27, A. M. Vander Molen24, J. A. Vanfossen, Jr.18, R. Varma14, G. M. S. Vasconcelos7, I. M. Vasilevski12, A. N. Vasiliev32, F. Videbaek3, S. E. Vigdor15, Y. P. Viyogi13, S. Vokal11, S. A. Voloshin50, M. Wada43, M. Walker22, F. Wang33, G. Wang6, J. S. Wang20, Q. Wang33, X. Wang44, X. L. Wang38, Y. Wang44, G. Webb19, J. C. Webb46, G. D. Westfall24, C. Whitten, Jr.6, H. Wieman21, S. W. Wissink15, R. Witt45, Y. Wu51, W. Xie33, N. Xu21, Q. H. Xu39, Y. Xu38, Z. Xu3, Y. Yang20, P. Yepes36, K. Yip3, I. -K. Yoo34, Q. Yue44, M. Zawisza48, H. Zbroszczyk48, W. Zhan20, S. Zhang40, W. M. Zhang18, X. P. Zhang21, Y. Zhang21, Z. P. Zhang38, Y. Zhao38, C. Zhong40, J. Zhou36, R. Zoulkarneev12, Y. Zoulkarneeva12, and J. X. Zuo40 (STAR Collaboration)
- 1Argonne National Laboratory, Argonne, Illinois 60439, USA
- 2University of Birmingham, Birmingham, United Kingdom
- 3Brookhaven National Laboratory, Upton, New York 11973, USA
- 4University of California, Berkeley, California 94720, USA
- 5University of California, Davis, California 95616, USA
- 6University of California, Los Angeles, California 90095, USA
- 7Universidade Estadual de Campinas, Sao Paulo, Brazil
- 8University of Illinois at Chicago, Chicago, Illinois 60607, USA
- 9Creighton University, Omaha, Nebraska 68178, USA
- 10Nuclear Physics Institute AS CR, 250 68Řežz/Prague, Czech Republic
- 11Laboratory for High Energy (JINR), Dubna, Russia
- 12Particle Physics Laboratory (JINR), Dubna, Russia
- 13Institute of Physics, Bhubaneswar 751005, India
- 14Indian Institute of Technology, Mumbai, India
- 15Indiana University, Bloomington, Indiana 47408, USA
- 16Institut de Recherches Subatomiques, Strasbourg, France
- 17University of Jammu, Jammu 180001, India
- 18Kent State University, Kent, Ohio 44242, USA
- 19University of Kentucky, Lexington, Kentucky, 40506-0055, USA
- 20Institute of Modern Physics, Lanzhou, People's Republic of China
- 21Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- 22Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
- 23Max-Planck-Institut für Physik, Munich, Germany
- 24Michigan State University, East Lansing, Michigan 48824, USA
- 25Moscow Engineering Physics Institute, Moscow Russia
- 26City College of New York, New York City, New York 10031, USA
- 27NIKHEF and Utrecht University, Amsterdam, The Netherlands
- 28Ohio State University, Columbus, Ohio 43210, USA
- 29Old Dominion University, Norfolk, Virginia 23529, USA
- 30Panjab University, Chandigarh 160014, India
- 31Pennsylvania State University, University Park, Pennsylvania 16802, USA
- 32Institute of High Energy Physics, Protvino, Russia
- 33Purdue University, West Lafayette, Indiana 47907, USA
- 34Pusan National University, Pusan, Republic of Korea
- 35University of Rajasthan, Jaipur 302004, India
- 36Rice University, Houston, Texas 77251, USA
- 37Universidade de Sao Paulo, Sao Paulo, Brazil
- 38University of Science & Technology of China, Hefei 230026, People's Republic of China
- 39Shandong University, Jinan, Shandong 250100, People's Republic of China
- 40Shanghai Institute of Applied Physics, Shanghai 201800, People's Republic of China
- 41SUBATECH, Nantes, France
- 42Texas A&M University, College Station, Texas 77843, USA
- 43University of Texas, Austin, Texas 78712, USA
- 44Tsinghua University, Beijing 100084, People's Republic of China
- 45United States Naval Academy, Annapolis, Maryland 21402, USA
- 46Valparaiso University, Valparaiso, Indiana 46383, USA
- 47Variable Energy Cyclotron Centre, Kolkata 700064, India
- 48Warsaw University of Technology, Warsaw, Poland
- 49University of Washington, Seattle, Washington 98195, USA
- 50Wayne State University, Detroit, Michigan 48201, USA
- 51Institute of Particle Physics, CCNU (HZNU), Wuhan 430079, People's Republic of China
- 52Yale University, New Haven, Connecticut 06520, USA
- 53University of Zagreb, Zagreb, HR-10002, Croatia
Phys. Rev. C 80, 041902(R) – Published 27 October, 2009
DOI: https://doi.org/10.1103/PhysRevC.80.041902
Abstract
The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of at midrapidity and high transverse momentum () in and central collisions at GeV. The inclusive production cross section for collisions is found to be consistent at high with the binary collision-scaled cross section for collisions. At a confidence level of , this is in contrast to a suppression of production observed at lower . Azimuthal correlations of with charged hadrons in collisions provide an estimate of the contribution of -hadron decays to production of .