Staff Members - Benha University
On Dynamical Net-Charge Fluctuations within a Hadron Resonance Gas Approach
Advances in High Energy Physics • 2016
Publication Information
Authors
Abdel Nasser Tawfik,1,2 L. I. Abou-Salem,3 Asmaa G. Shalaby,3 and M. Hanafy3
Keywords
Not Available
Journal
Advances in High Energy Physics
Publisher
Hindawi Publishing Corporation
Volume
2016
Issue
Not Available
Pages
7 pages
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
The dynamical net-charge fluctuations (]dyn ) in different particle ratios K/π, K/p, and p/π are calculated from the hadron resonance
gas (HRG) model and compared with STAR central Au+Au collisions at √ sNN = 7.7–200 GeV and NA49 central Pb+Pb collisions
at √ sNN = 6.3–17.3 GeV. The three charged particle ratios (K/π, K/p, and p/π) are determined as total and average of opposite and
average of the same charges. We find an excellent agreement between the HRG calculations and the experimental measurements,
especially from STAR beam energy scan (BES) program, while the strange particles in the NA49 experiment at lower Super Proton
Synchrotron (SPS) energies are not reproduced by the HRG approach. We conclude that the utilized HRG version seems to take into
consideration various types of correlations including strong interactions through the heavy resonances and their decays especially
at BES energies.
gas (HRG) model and compared with STAR central Au+Au collisions at √ sNN = 7.7–200 GeV and NA49 central Pb+Pb collisions
at √ sNN = 6.3–17.3 GeV. The three charged particle ratios (K/π, K/p, and p/π) are determined as total and average of opposite and
average of the same charges. We find an excellent agreement between the HRG calculations and the experimental measurements,
especially from STAR beam energy scan (BES) program, while the strange particles in the NA49 experiment at lower Super Proton
Synchrotron (SPS) energies are not reproduced by the HRG approach. We conclude that the utilized HRG version seems to take into
consideration various types of correlations including strong interactions through the heavy resonances and their decays especially
at BES energies.