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Relativistic heavy ions; quark gluon plasma; PHENIX

The PHENIX experiment consists of a large detector system located at the newly commissioned relativistic heavy ion collider (RHIC) at the Brookhaven National Laboratory. The primary goal of the PHENIX experiment is to look for signatures of the QCD prediction of a deconfined high-energy-density phase of nuclear matter quark gluon plasma. PHENIX started data taking for Au+Au collisions at √sNN=130 GeV in June 2000. The signals from the beam-beam counter (BBC) and zero degree calorimeter (ZDC) are used to determine the centrality of the collision. A Glauber model reproduces the ZDC spectrum reasonably well to determine the participants in a collision. Charged particle multiplicity distribution from the first PHENIX paper is compared with the other RHIC experiment and the CERN, SPS results. Transverse momentum of photons are measured in the electro-magnetic calorimeter (EMCal) and preliminary results are presented. Particle identification is made by a time of flight (TOF) detector and the results show clear separation of the charged hadrons from each other.

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1. Vanderbilt University, Nashville, TN - 37235, USA
2. Brookhaven National Laboratory, Upton, NY - 11973-5000, USA
3. Chemistry Department, State University of New York — Stony Brook, Stony Brook, NY - 11794, USA
4. KEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken - 305-0801, Japan
5. SUBATECH (Ecole des Mines de Nantes, IN2P3/CNRS, Universite de Nantes), BP 20722-44307, Nantes-cedex 3, France
6. Department of Physics and Astronomy, State University of New York — Stony Brook, Stony Brook, NY - 11794, USA
7. Oak Ridge National Laboratory, Oak Ridge, TN - 37831, USA
8. University of California-Riverside, Riverside, CA - 92521, USA
9. Los Alamos National Laboratory, Los Alamos, NM - 87545, USA
10. McGill University, Montreal, Quebec - H3A 2T8, Canada
11. University of New Mexico, Albuquerque, NM, USA
12. Institut fuer Kernphysik, University of Muenster, Muenster - D-48149, Germany
13. PNPI, Petersburg Nuclear Physics Institute, Gatchina, Russia
14. Institute for High Energy Physics (IHEP), Protvino, Russia
15. RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY - 11973-5000, USA
16. Iowa State University, Ames, IA - 50011, USA
17. Russian Research Center ”Kurchatov Institute”, Moscow, Russia
18. St Petersburg State Technical University, St Petersburg, Russia
19. Universidade de São Paulo, Instituto de Fisica, Caixa Postal 66318, São Paulo - CEP05315-970, Brazil
20. New Mexico State University, Las Cruces, NM - 88003, USA
21. Bhabha Atomic Research Centre, Mumbai - 400 085, India
22. Institute of Physics, Academia Sinica, Taipei - 11529, Taiwan
23. Columbia University, New York, NY - 10027
24. Nevis Laboratories, Irvington, NY - 10533, USA
25. Institute of Physics, University of Tsukuba, Tsukuba, Ibarak - 305, Japan
26. Korea University, Seoul - 136-701, Korea
27. Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki - 851-0193, Japan
28. Kyoto University, Kyoto - 606, Japan
29. RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama - 351-0198, Japan
30. Weizmann Institute, Rehovot - 76100, Israel
31. Florida State University, Tallahassee, FL - 32306, USA
32. Department of Physics, Lund University, Box 118, Lund - SE-221 00, Sweden
33. University of Tennessee, Knxville, TN - 37996, USA
34. Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo - 113-0033, Japan
35. Lawrence Livermore National Laboratory, Livermore, CA - 94550, USA
36. University of Tokyo, Tokyo, Japan
37. Georgia State University, Atlanta, GA - 30303, USA
38. Yonsei University, IPAP, Seoul - 120-749, Korea
39. Hiroshima University, Kagamiyama, Higashi-Hiroshima - 739-8526, Japan
40. Myongji University, Yongin, Kyonggido - 449-728, Korea
41. Waseda University. Advanced Research Institute for Science and Engineering, 17 Kikui-cho, Shinjuku-ku, Tokyo - 162-0044, Japan
42. China Institute of Atomic Energy (CIAE), Beijing, People’s Republic of China
43. Department of Physics, Banaras Hindu University, Varanasi - 221005, India
44. Department of Physics, Tokyo Institute of Technology, Tokyo - 152-8551, Japan
45. Individual Participant: KFKI Research Institute for Particel and Nuclear Physics (RMKI), Budapest, Hungary

Published

9 August 2001