Gluon Shadowing and Hadron Production at RHIC

Nuclear Science Division, Mailstop 70-319, Lawrence Berkeley Laboratory, Berkeley, California 94720.(October 3,2001)Hadron multiplicity in the central rapidity region of high-energy heavy-ion collisions is investi-gated within a two-component mini-jet model which consists of soft and semi-hard particle produc-tion. The hard contribution from mini-jets is reevaluated using the latest parameterization of partondistributions and nuclear shadowing. The energy dependence of the experimental data from RHICrequires a strong nuclear shadowing of the gluon distribution in this model. The centrality depen-dence of the hadron multiplicity at√s = 130 GeV is reproduced well with the impact-parameterdependent parton shadowing. However, energy variation of the centrality dependence is needed todistinguish different particle production mechanisms such as the parton saturation model.25.75.-q,12.38.Bx,12.38.Mh,24.85.+p

• Publication year

  2001

• Venue

  Physics Letters B

• Publication date

  2001-10-29

• Fields of study

  Physics

• Identifiers
  DOI 10.1016/S0370-2693(02)01179-6arXiv nucl-th/0110075
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  Open on Semantic Scholar

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