Baryon Stopping Probes Partonic and Hadronic Processes(Forward and Diffraction Physics and Cosmic Rays,Multiparticle Dynamics)

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概要

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• Stopping and baryon transport in central relativistic Pb+Pb and Au+Au collisions are reconsidered with the aim to find indications for the transition from hadronic to partonic processes. At energies reached at the CERN Super Proton Synchrotron (√<^SNN>=6.3-17.3 GeV) and at RHIC (62.4 GeV) the fragmentation-peak positions as obtained from the data depend linearly on the beam rapidity and are in agreement with earlier results from a QCD-based approach that accounts for gluon saturation. No discontinuities in the net-proton fragmentation peak positions occur in the expected transition region from partons to hadrons at 6-10 GeV. In contrast, the mean rapidity loss depends linearly on the beam rapidity only at high energies beyond the RHIC scale. The combination of both results offers a clue for the transition from hard partonic to soft hadronic processes in baryon stopping.

• 2012-04-27

著者

• Wolschin Georg

  Institut Fur Theoretische Physik Der Universitat Heidelberg

関連論文

• Baryon Stopping Probes Partonic and Hadronic Processes(Forward and Diffraction Physics and Cosmic Rays,Multiparticle Dynamics)

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