Pseudorapidity asymmetry and centrality dependence of charged hadron spectra in d+Au collisions at {radical}(s{sub NN})=200 GeV

Journal Article · Wed Dec 01 04:00:00 EST 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.064907· OSTI ID:20695838

Adams, J; Barnby, L S; Blyth, C O; Gaillard, L; Jones, P G; Nelson, J M ^[1]; Aggarwal, M M; Bhati, A K; 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 ^[3]

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

The pseudorapidity asymmetry and centrality dependence of charged hadron spectra in d+Au collisions at {radical}(s{sub NN})=200 GeV are presented. The charged particle density at midrapidity, its pseudorapidity asymmetry, and centrality dependence are reasonably reproduced by a multiphase transport model, by HIJING, and by the latest calculations in a saturation model. Ratios of transverse momentum spectra between backward and forward pseudorapidity are above unity for p{sub T} below 5 GeV/c. The ratio of central to peripheral spectra in d+Au collisions shows enhancement at 2<p{sub T}<6 GeV/c, with a larger effect at backward rapidity than forward rapidity. Our measurements are in qualitative agreement with gluon saturation and in contrast to calculations based on incoherent multiple partonic scatterings.

• OSTI ID: 20695838
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
DEUTERON REACTIONS
ENERGY SPECTRA
GEV RANGE
GLUONS
GOLD 197 TARGET
HADRONS
PARTICLE PRODUCTION
PARTICLE RAPIDITY
PARTON MODEL
PARTONS
TRANSPORT THEORY
TRANSVERSE MOMENTUM