Long range rapidity correlations as seen in the STAR experiment |
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| Authors: | T. Lappi L. McLerran |
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| Affiliation: | 1. Department of Physics, P.O. Box 35, 40014 University of Jyväskylä, Finland;2. Institut de Physique Théorique, Bât. 774, CEA/DSM/Saclay, 91191 Gif-sur-Yvette, France;3. Physics Department and Riken-BNL Center, Brookhaven National Laboratory, Upton, NY 11973, USA;1. Department of Physics, The University of Arizona, Tucson, AZ 85721, USA;2. Laboratoire de Physique Théorique et Hautes Energies, Université Paris 6, Paris 75005, France;3. FIAS, J.W. Goethe Universität, 60438 Frankfurt A.M., Germany;4. Pupin Physics Laboratory, Columbia University, 538 West 120th Street, NY 10027, USA;5. Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas UNICAMP, Campinas, SP, 13083-859, Brazil;1. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;2. Key Laboratory of Quarks and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, 430079, China;1. Department of Physics, Harbin Institute of Technology, Harbin 150001, People''s Republic of China;2. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA |
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| Abstract: | We analyze long range rapidity correlations observed in the STAR experiment at RHIC. Our goal is to extract properties of the two particle correlation matrix, accounting for the analysis method of the STAR experiment. We find a surprisingly large correlation strength for central collisions of gold nuclei at highest RHIC energies. We argue that such correlations cannot be the result of impact parameter fluctuations. |
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