Effect of final state interactions on particle production in $d$+Au collisions at RHIC

Details Effect of final state interactions on particle production in $d$+Au collisions at RHIC Effect of final state interactions on particle production in $d$+Au collisions at RHIC

2010-01-26

arxiv.org/abs/1001.4734v1

Phys. Rev. C 84, 031901(R) (2011)

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures

Scientific paper

10.1103/PhysRevC.84.031901

We show that particle species dependence of enhanced hadron production at intermediate transverse momentum (p_{T}) for d+Au collisions at RHIC can be understood in terms of the hadronic rescatterings in the final state. A multiphase transport model (AMPT) with two different hadronization mechanisms: string fragmentation or parton coalescence, is used in our study. When the hadrons are formed from string fragmentation, the subsequent hadronic rescatterings will result in particle mass dependence of nuclear modification factor R_{CP}, which is consistent with the present experimental data. On the other hand, in the framework of parton coalescence, the mass dependence disappears and the strangeness plays an important role. Both mechanisms failed to reproduce the p_{T} dependence of R_{CP} of pion, indicating that initial-state effects might be also important in such collisions.

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