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Title: Baryon stopping and saturation physics in relativistic collisions

Abstract

We investigate baryon transport in relativistic heavy-ion collisions at energies reached at the CERN Super Proton Synchrotron (SPS), BNL Relativistic Heavy-Ion Collider (RHIC), and CERN's Large Hadron Collider (LHC) in the model of saturation. An analytical scaling law is derived within the color glass condensate framework based on small-coupling QCD. Transverse momentum spectra, net-baryon rapidity distributions, and their energy, mass, and centrality dependencies are well described. In comparison with RHIC data in Au+Au collisions at {radical}(s{sub NN})=62.4 and 200 GeV, the gradual approach to the gluon saturation regime is investigated and limits for the saturation-scale exponent are determined. Predictions for net-baryon rapidity spectra and the mean rapidity loss in central Pb+Pb collisions at LHC energies of {radical}(s{sub NN})=5.52 TeV are made.

Authors:
;  [1]
  1. Institut fuer Theoretische Physik der Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
21296515
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 80; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.80.054905; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ATOM-ATOM COLLISIONS; BARYONS; BNL; BROOKHAVEN RHIC; CERN LHC; CERN SPS SYNCHROTRON; COMPARATIVE EVALUATIONS; COUPLING; GEV RANGE 100-1000; GLUONS; GOLD; HEAVY ION REACTIONS; LEAD; LOSSES; PARTICLE RAPIDITY; PROTONS; QUANTUM CHROMODYNAMICS; RELATIVISTIC RANGE; SATURATION; SIMULATION; SPECTRA; TEV RANGE 01-10; TRANSVERSE MOMENTUM

Citation Formats

Mehtar-Tani, Yacine, and Wolschin, Georg. Baryon stopping and saturation physics in relativistic collisions. United States: N. p., 2009. Web. doi:10.1103/PHYSREVC.80.054905.
Mehtar-Tani, Yacine, & Wolschin, Georg. Baryon stopping and saturation physics in relativistic collisions. United States. https://doi.org/10.1103/PHYSREVC.80.054905
Mehtar-Tani, Yacine, and Wolschin, Georg. Sun . "Baryon stopping and saturation physics in relativistic collisions". United States. https://doi.org/10.1103/PHYSREVC.80.054905.
@article{osti_21296515,
title = {Baryon stopping and saturation physics in relativistic collisions},
author = {Mehtar-Tani, Yacine and Wolschin, Georg},
abstractNote = {We investigate baryon transport in relativistic heavy-ion collisions at energies reached at the CERN Super Proton Synchrotron (SPS), BNL Relativistic Heavy-Ion Collider (RHIC), and CERN's Large Hadron Collider (LHC) in the model of saturation. An analytical scaling law is derived within the color glass condensate framework based on small-coupling QCD. Transverse momentum spectra, net-baryon rapidity distributions, and their energy, mass, and centrality dependencies are well described. In comparison with RHIC data in Au+Au collisions at {radical}(s{sub NN})=62.4 and 200 GeV, the gradual approach to the gluon saturation regime is investigated and limits for the saturation-scale exponent are determined. Predictions for net-baryon rapidity spectra and the mean rapidity loss in central Pb+Pb collisions at LHC energies of {radical}(s{sub NN})=5.52 TeV are made.},
doi = {10.1103/PHYSREVC.80.054905},
url = {https://www.osti.gov/biblio/21296515}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 80,
place = {United States},
year = {2009},
month = {11}
}