Abstract
We present STAR measurements of charged hadron production as a function of centrality in Au+Au collisions at √sNN=130 GeV. The measurements cover a phase space region of 0.2<pT<6.0 GeV/c in transverse momentum and -1 < η< 1 in pseudorapidity. Inclusive transverse momentum distributions of charged hadrons in the pseudorapidity region 0.5<|η|<1 are reported and compared to our previously published results for |η|<0.5. No significant difference is seen for inclusive pT distributions of charged hadrons in these two pseudorapidity bins. We measured dN/dη distributions and truncated mean pT in a region of pT>pcut, 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 processes is investigated through binary scaling fraction of particle production.
Original language | English |
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Article number | 044901 |
Pages (from-to) | 044901-1-044901-11 |
Journal | Physical Review C - Nuclear Physics |
Volume | 70 |
Issue number | 4 |
DOIs | |
State | Published - Oct 1 2004 |
Bibliographical note
Publisher Copyright:© 2004 The American Physical Society.
Funding
We thank the RHIC Operations Group and RCF at BNL, and the NERSC Center at LBNL for their support. This work was supported in part by the HENP Divisions of the Office of Science of the U.S. DOE; the U.S. NSF; the BMBF of Germany; IN2P3, RA, RPL, and EMN of France; EPSRC of the United Kingdom; FAPESP of Brazil; the Russian Ministry of Science and Technology; the Ministry of Education and the NNSFC of China; SFOM of the Czech Republic; FOM and UU of the Netherlands; DAE, DST, and CSIR of the Government of India; and the Swiss NSF.
Funders | Funder number |
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EMN | |
Russian Ministry of Science and Technology | |
U.S. Department of Energy EPSCoR | |
Office of Science Programs | |
Engineering and Physical Sciences Research Council | |
Department of Science and Technology, Ministry of Science and Technology, India | |
Council of Scientific and Industrial Research, India | |
Government of India, Department of Atomic Energy | |
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | |
Fundação de Amparo à Pesquisa do Estado de São Paulo | |
National Natural Science Foundation of China (NSFC) | |
Bundesministerium für Bildung und Forschung | IN2P3 |
Bundesministerium für Bildung und Forschung | |
Ministry of Education China | |
Neurosciences Foundation |
ASJC Scopus subject areas
- Nuclear and High Energy Physics