Phys. Rev. Lett.
103,
172301
(2009)
[6 pages]
Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality in Au+Au Collisions at √sNN=200 GeV
B. I. Abelev et al.
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B. I. Abelev8, M. M. Aggarwal30, Z. Ahammed47, B. D. Anderson18, D. Arkhipkin12, G. S. Averichev11, J. Balewski22, O. Barannikova8, 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, F. Du52, 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, 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, N. Li51, C. Li38, 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, T. S. McShane9, A. Meschanin32, R. Milner22, N. G. Minaev32, S. Mioduszewski42, A. Mischke27, J. Mitchell36, 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, M. Planinic53, J. Pluta48, 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. 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, T. Tarnowsky24, D. Thein43, J. H. Thomas21, J. Tian40, A. R. Timmins50, S. Timoshenko25, D. Tlusty10, M. Tokarev11, 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, 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 68 Řež/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, China
21Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
22Massachusetts Institute of Technology, Cambridge, Massachusetts A 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, China
39Shandong University, Jinan, Shandong 250100, China
40Shanghai Institute of Applied Physics, Shanghai 201800, China
41SUBATECH, Nantes, France
42Texas A&M University, College Station, Texas 77843, USA
43University of Texas, Austin, Texas 78712, USA
44Tsinghua University, Beijing 100084, 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, China
52Yale University, New Haven, Connecticut 06520, USA
53University of Zagreb, Zagreb, HR-10002, Croatia
Received 2 May 2009; published 21 October 2009
Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au+Au and p+p collisions at √sNN=200 GeV. Strong short- and long-range correlations (LRC) are seen in central Au+Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short-range correlations are observed in peripheral Au+Au collisions. Both the dual parton model (DPM) and the color glass condensate (CGC) predict the existence of the long-range correlations. In the DPM, the fluctuation in the number of elementary (parton) inelastic collisions produces the LRC. In the CGC, longitudinal color flux tubes generate the LRC. The data are in qualitative agreement with the predictions of the DPM and indicate the presence of multiple parton interactions.
© 2009 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.172301
DOI:
10.1103/PhysRevLett.103.172301
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