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Baryon stopping as a new probe of geometric scaling.

Authors :
Mehtar-Tani Y
Wolschin G
Source :
Physical review letters [Phys Rev Lett] 2009 May 08; Vol. 102 (18), pp. 182301. Date of Electronic Publication: 2009 May 06.
Publication Year :
2009

Abstract

We suggest using net-baryon rapidity distributions in central relativistic heavy-ion collisions at energies reached at the CERN Super Proton Synchrotron, BNL Relativistic Heavy-Ion Collider (RHIC), and CERN LHC in order to probe saturation physics. Within the color glass condensate framework based on small-coupling QCD, net-baryon rapidity distributions are shown to exhibit geometric scaling. In a comparison with RHIC data in Au+Au collisions at sqrt[sNN=62.4 GeV and 200 GeV the gradual approach to the gluon saturation regime is investigated. Predictions for net-baryon rapidity spectra and the mean rapidity loss in central Pb+Pb collisions at LHC energies of sqrt[sNN=5.52 TeV are made.

Details

Language :
English
ISSN :
0031-9007
Volume :
102
Issue :
18
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
19518863
Full Text :
https://doi.org/10.1103/PhysRevLett.102.182301