Abstract:
We calculate the transverse momentum
distribution of net
quarks (quarks minus antiquarks) in Au+Au
collisions at the
Relativistic Heavy Ion Collider in the
framework of the
parton cascade model at two different
rapidities. Parton
re-scattering and fragmentation is seen to
lead to a
substantial difference in the slopes of these
distributions
between mid- and forward-rapidities, in
qualitative
agreement with the corresponding data for the
net baryon
distribution.