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 · Fri Oct 01 04:00:00 EDT 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.044901· OSTI ID:20695675

Adams, J; Barnby, L S; Blyth, C O; Jones, P G; Lamont, M A.C.; Nelson, J M ^[1]; Aggarwal, M M; Bhatia, V S; Kumar, A; Sharma, M ^[2]; Ahammed, Z; Chattopdhyay, S; Das, D; Das, S; Dutta Mazumdar, M R; Ganti, M S; Ghosh, P; Mohanty, B; Nandi, B K; Nayak, T K ^[3]

---

1. University of Birmingham, Birmingham (United Kingdom)
2. Panjab University, Chandigarh 160014 (India)
3. Variable Energy Cyclotron Centre, Kolkata 700064 (India); and others

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< vertical bar {eta} vertical bar <1 are reported and compared to our previously published results for vertical bar {eta} vertical bar <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 processes is investigated through binary scaling fraction of particle production.

• OSTI ID: 20695675
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BROOKHAVEN RHIC
DISTRIBUTION
GEV RANGE
GOLD 197 TARGET
HADRONS
MULTIPARTICLE SPECTROMETERS
NUCLEAR REACTION YIELD
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE RAPIDITY
PHASE SPACE
TRANSVERSE MOMENTUM