Stopping in central Pb+Pb collisions at SPS energies and beyond

We investigate stopping and baryon transport in central relativistic Pb+Pb and Au+Au collisions. At energies reached at the CERN Super Proton Synchrotron ($\sqrt {s_{NN}}$ = 6.3–17.3 GeV) and at RHIC (62.4 GeV), we determine the fragmentation peak positions from the data. The resulting linear growth...

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Bibliographic Details
Published in:Europhysics letters 2011-06, Vol.94 (6), p.62003
Main Authors: Mehtar-Tani, Y, Wolschin, G
Format: Article
Language:English
Subjects:
24.85.+p
25.75.-q
25.75.Nq
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Summary:We investigate stopping and baryon transport in central relativistic Pb+Pb and Au+Au collisions. At energies reached at the CERN Super Proton Synchrotron ($\sqrt {s_{NN}}$ = 6.3–17.3 GeV) and at RHIC (62.4 GeV), we determine the fragmentation peak positions from the data. The resulting linear growth of the peak positions with beam rapidity is in agreement with our 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.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/94/62003