Effects of volume corrections and resonance decays on cumulants of net-charge distributions in a Monte Carlo hadron resonance gas model

2016/12/12 by H. Xu, Hao-jie Xu · 23 citations
Mathematics · Physics and Astronomy · #Charge (physics) #Cumulant #Glauber #Hadron #High-Energy Particle Collisions Research #Mathematics #Monte Carlo method #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Resonance (particle physics) #Sigma #Statistical physics #Statistics #Volume (thermodynamics) #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1016/j.physletb.2016.12.015

published in Physics Letters B 765, 188-192 (Elsevier BV) · A Monte Carlo hadron resonance gas (MCHRG) model is proposed to study the cumulants of multiplicity distributions. 6 pages, 2 figures

openalex publication_date 2016/12/12 · arxiv created 2016/12/20 · arxiv updated 2016/12/21 · openalex created_date 2017/01/06 · openalex updated_date 2026/08/05

Abstract

The effects of volume corrections and resonance decays (the resulting correlations between positive charges and negative charges) on cumulants of net-proton distributions and net-charge distributions are investigated by using a Monte Carlo hadron resonance gas (MCHRG) model. The required volume distributions are generated by a Monte Carlo Glauber (MC-Glb) model. Except the variances of net-charge distributions, the MCHRG model with more realistic simulations of volume corrections, resonance decays and acceptance cuts can reasonably explain the data of cumulants of net-proton distributions and net-charge distributions reported by the STAR collaboration. The MCHRG calculations indicate that both the volume corrections and resonance decays make the cumulant products of net-charge distributions deviate from the Skellam expectations: the deviations of Sσ and κσ2 are dominated by the former effect while the deviations of ω are dominated by the latter one.

Citations

• Review of Particle Physics
• Stabilizing hadron resonance gas models
• Error estimation for moment analysis in heavy-ion collision experiment
• Multiplicity fluctuations in relativistic nuclear collisions: statistical model versus experimental data
• Non-Gaussian Fluctuations near the QCD Critical Point
• Thermodynamics and fluctuations of conserved charges in a hadron resonance gas model in a finite volume
• Probability distributions in statistical ensembles with conserved charges
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Understanding the negative binomial multiplicity fluctuations in relativistic heavy ion collisions
• Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter
• Multiplicity fluctuations in relativistic nuclear collisions: Statistical model versus experimental data

Cited by

• Critical point of nuclear matter and beam-energy dependence of net-proton number fluctuations