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Title: Freeze-out conditions from net-proton and net-charge fluctuations at RHIC

We calculate ratios of higher-order susceptibilities quantifying fluctuations in the number of net-protons and in the net-electric charge using the Hadron Resonance Gas (HRG) model. We take into account the effect of resonance decays, the kinematic acceptance cuts in rapidity, pseudo-rapidity and transverse momentum used in the experimental analysis, as well as a randomization of the isospin of nucleons in the hadronic phase. By comparing these results to the latest experimental data from the STAR Collaboration, we determine the freeze-out conditions from net-electric charge and net-proton distributions and discuss their consistency.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [1]
  1. Torino University and INFN (Italy). Dept. of Physics.
  2. Univ. of Houston, Houston, TX (United States). Dept. of Physics.
  3. Torino University and INFN (Italy). Dept. of Physics; North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics.
  4. Duke Univ., Durham, NC (United States). Dept. of Physics; Frankfurt Institute for Advanced Studies (FIAS), Frankfurt am Main (Germany)
Publication Date:
OSTI Identifier:
1197906
Grant/Contract Number:
FG02-03ER41260; FG02-05ER41367; FG02-07ER41521
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 738; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Houston, TX (United States). Dept. of Physics; North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics; Duke Univ., Durham, NC (United States). Dept. of Physics.
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS