Centrality and pseudorapidity dependence of charged hadron production at intermediate p{sub T} in Au+Au collisions at {radical}s{sub NN} = 130 GeV
We present STAR measurements of charged hadron production as a function of centrality in Au + Au collisions at {radical}s{sub NN} = 130 GeV. The measurements cover a phase space region of 0.2 < p{sub T} < 6.0 GeV/c in transverse momentum and -1 < {eta} < 1 in pseudorapidity. Inclusive transverse momentum distributions of charged hadrons in the pseudorapidity region 0.5 < |{eta}| < 1 are reported and compared to our previously published results for |{eta}| < 0.5. No significant difference is seen for inclusive p{sub T} distributions of charged hadrons in these two pseudorapidity bins. We measured dN/d{eta} distributions and truncated mean p{sub T} in a region of p{sub T} > p{sub T}{sup cut}, and studied the results in the framework of participant and binary scaling. No clear evidence is observed for participant scaling of charged hadron yield in the measured p{sub T} region. The relative importance of hard scattering process is investigated through binary scaling fraction of particle production.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics; National Science Foundation (NSF); BMBF Germany, IN2P3 RA RPL EMN France, EPSRC United Kingdom, FAPESP Brazil, Russian Ministry of Science and Technology, Ministry of Education NNSFC China, SFOM Czech Republic, FOM UU Netherlands, DAE DST CSIR India, Swiss National Science Foundation (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 834938
- Report Number(s):
- LBNL-55117; R&D Project: NRNC; TRN: US0407441
- Journal Information:
- Physical Review C, Vol. 70; Other Information: Submitted to Physical Review C, Volume 70; Journal Publication Date: 2004; PBD: 15 Apr 2004
- Country of Publication:
- United States
- Language:
- English
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