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Centrality and pseudorapidity dependence of charged hadron production at intermediate p{sub t} in Au+Au collisions at {radical}s{sub NN} = 130 GeV

Journal Article · · Physical Review C
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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 11 < {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 pT region. The relative importance of hard scattering process is investigated through binary scaling fraction of particle production.
Research Organization:
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Organization:
USDOE Director. Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics; U.S. National Science Foundation; 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:
834433
Report Number(s):
LBNL--55117
Journal Information:
Physical Review C, Journal Name: Physical Review C Vol. 70
Country of Publication:
United States
Language:
English

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HADRONS
PARTICLE PRODUCTION
PHASE SPACE
PRODUCTION
SCATTERING
STARS
TRANSVERSE MOMENTUM