Elastic parton scattering and nonstatistical event-by-event mean-p{sub t} fluctuations in Au+Au collisions at {radical}(s{sub NN})=130 and 200 GeV
- Department of Mathematics and Physics, Beijing Institute of Petro-chemical Technology, Beijing 102617 (China)
- CCAST (World Lab.), P. O. Box 8730, Beijing 100080 (China) and Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918(4), Beijing 100039 (China)
Nonstatistical event-by-event mean-p{sub t} fluctuations in Au+Au collisions at {radical}(s{sub NN})=130 and 200 GeV are analyzed in the multiphase transport model (AMPT) with string melting, and the results are compared with STAR data. The analysis suggests that in-medium elastic parton scattering may contribute greatly to the mean-p{sub t} fluctuations in relativistic heavy-ion collisions. Furthermore, it is demonstrated that nonstatistical event-by-event mean-p{sub t} fluctuations can be used to probe the initial partonic dynamics in these collisions. The comparison shows that with an in-medium elastic parton-scattering cross section {sigma}{sub p}=10 mb, AMPT with string melting can well reproduce {radical}(s{sub NN})=130 GeV data on the centrality dependence of nonstatistical event-by-event mean-p{sub t} fluctuations. The comparison also shows that the fluctuation data for {radical}(s{sub NN})=200 GeV Au+Au collisions can be well reproduced with {sigma}{sub p} between 6 and 10 mb.
- OSTI ID:
- 21189851
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 77, Issue 3; Other Information: DOI: 10.1103/PhysRevC.77.034902; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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