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The charged-hadron/pion ratio at the Relativistic Heavy Ion Collider

Xiaofei Zhang, George Fai

hep-pharXiv:hep-ph/0306227

Abstract

The hadron/pion ratio is calculated in 200 GeV AuAu collisions at midrapidity, applying pQCD and non-universal transverse-momentum broadening. Arguments are presented for such non-universality, and the idea is implemented in a model, which explains the enhancement of the hadron/pion ratio in central AuAu collisions. The model also describes the qualitative difference between the recently-measured dAu nuclear enhancement factors for pions and charged hadrons.

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