Semihard scattering of partons at SPS and RHIC: A Study in contrast.
We analyze the contribution of pQCD based semi-hard parton
(re)scattering to the reaction dynamics of relativistic
heavy-ion collisions at SPS and RHIC. While such processes
are able to account for the measured yield of high momentum
direct photons at SPS energies, the conditions necessary for
jet-quenching are not fulfilled. The situation changes
dramatically at RHIC energies.
S A Bass, BM; uuml, ; ller, DKS
Phys. Rev. C, Rapid Communication
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