Does parton saturation at high density explain hadron multiplicities at RHIC ?

Details Does parton saturation at high density explain hadron multiplicities at RHIC ? Does parton saturation at high density explain hadron multiplicities at RHIC ?

2002-04-18

arxiv.org/abs/hep-ph/0204211v1

Phys.Lett. B539 (2002) 46-52

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages

Scientific paper

10.1016/S0370-2693(02)02037-3

We discuss the recent claim that hadron multiplicities measured at RHIC energies are directly described in terms of gluon degrees of freedom fixed from the initial conditions of central heavy ion collisions. The argument is based on the parton saturation scenario expected to be valid at high parton densities and on the assumption of conserved gluon number. Alternatively we conjecture that "bottom-up" equilibration before hadronization modifies this picture, due to nonconservation of the number of gluons.

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