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Net Baryon Density in A u + A u Collisions at the Relativistic Heavy Ion Collider

2003; American Physical Society; Volume: 91; Issue: 5 Linguagem: Inglês

10.1103/physrevlett.91.052302

1092-0145

Steffen A. Bass, Berndt Müller, Dinesh Kumar Srivastava,

Quantum Chromodynamics and Particle Interactions

We calculate the net-baryon rapidity distribution in Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC) in the framework of the parton cascade model (PCM). Parton rescattering and fragmentation leads to a substantial increase in the net-baryon density at midrapidity over the density produced by initial primary parton-parton scatterings. The PCM is able to describe the measured net-baryon density at RHIC.