skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Impact of resonance regeneration and decay on the net proton fluctuations in a hadron resonance gas

Abstract

We investigate net proton fluctuations as important observables measured in heavy-ion collisions within the hadron resonance gas (HRG) model. Special emphasis is given to effects which are a priori not inherent in a thermally and chemically equilibrated HRG approach. In particular, we point out the importance of taking into account the successive regeneration and decay of resonances after the chemical freeze-out, which lead to a randomization of the isospin of nucleons and thus to additional fluctuations in the net proton number. In conclusion, we find good agreement between our model results and the recent STAR measurements of the higher-order moments of the net proton distribution.

Authors:
 [1];  [2];  [3];  [4];  [4]
  1. Duke Univ., Durham, NC (United States); Frankfurt Institute for Advanced Studies (FIAS), Frankfurt am Main (Germany)
  2. North Carolina State Univ., Raleigh, NC (United States)
  3. Univ. degli Studi di Torino and INFN, Turin (Italy)
  4. Univ. of Houston, Houston, TX (United States)
Publication Date:
Research Org.:
Univ. of Houston System, Houston, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1434894
Grant/Contract Number:  
FG02-07ER41521
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 75; Journal Issue: 12; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadronic Phase; Resonance Decay; Statistical Hadronization Model; Final Proton; Stable Hadron

Citation Formats

Nahrgang, Marlene, Bluhm, Marcus, Alba, Paolo, Bellwied, Rene, and Ratti, Claudia. Impact of resonance regeneration and decay on the net proton fluctuations in a hadron resonance gas. United States: N. p., 2015. Web. doi:10.1140/epjc/s10052-015-3775-0.
Nahrgang, Marlene, Bluhm, Marcus, Alba, Paolo, Bellwied, Rene, & Ratti, Claudia. Impact of resonance regeneration and decay on the net proton fluctuations in a hadron resonance gas. United States. doi:10.1140/epjc/s10052-015-3775-0.
Nahrgang, Marlene, Bluhm, Marcus, Alba, Paolo, Bellwied, Rene, and Ratti, Claudia. Tue . "Impact of resonance regeneration and decay on the net proton fluctuations in a hadron resonance gas". United States. doi:10.1140/epjc/s10052-015-3775-0. https://www.osti.gov/servlets/purl/1434894.
@article{osti_1434894,
title = {Impact of resonance regeneration and decay on the net proton fluctuations in a hadron resonance gas},
author = {Nahrgang, Marlene and Bluhm, Marcus and Alba, Paolo and Bellwied, Rene and Ratti, Claudia},
abstractNote = {We investigate net proton fluctuations as important observables measured in heavy-ion collisions within the hadron resonance gas (HRG) model. Special emphasis is given to effects which are a priori not inherent in a thermally and chemically equilibrated HRG approach. In particular, we point out the importance of taking into account the successive regeneration and decay of resonances after the chemical freeze-out, which lead to a randomization of the isospin of nucleons and thus to additional fluctuations in the net proton number. In conclusion, we find good agreement between our model results and the recent STAR measurements of the higher-order moments of the net proton distribution.},
doi = {10.1140/epjc/s10052-015-3775-0},
journal = {European Physical Journal. C, Particles and Fields},
number = 12,
volume = 75,
place = {United States},
year = {2015},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Universality, the QCD critical and tricritical point, and the quark number susceptibility
journal, January 2003


Freeze-Out Conditions in Heavy Ion Collisions from QCD Thermodynamics
journal, November 2012


Baseline study for higher moments of net-charge distributions at energies available at the BNL Relativistic Heavy Ion Collider
journal, April 2013


Revealing baryon number fluctuations from proton number fluctuations in relativistic heavy ion collisions
journal, February 2012


QCD equation of state and hadron resonance gas
journal, June 2010


Quark–gluon plasma and color glass condensate at RHIC? The perspective from the BRAHMS experiment
journal, August 2005


Strange Baryon Resonance Production in s N N = 200 GeV p + p and Au + Au Collisions
journal, September 2006


The role of the entropy in an expanding hadronic gas
journal, July 1992


Lattice QCD-based equations of state at vanishing net-baryon density
journal, September 2014


Slowing out of equilibrium near the QCD critical point
journal, April 2000


The thermal model on the verge of the ultimate test: particle production in Pb–Pb collisions at the LHC
journal, November 2011

  • Andronic, A.; Braun-Munzinger, P.; Redlich, K.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 12
  • DOI: 10.1088/0954-3899/38/12/124081

Proton-Number Fluctuation as a Signal of the QCD Critical End Point
journal, September 2003


Color superconductivity and chiral symmetry restoration at non-zero baryon density and temperature
journal, January 1999


Freeze-Out Parameters: Lattice Meets Experiment
journal, August 2013


Thermal properties of interacting hadrons
journal, September 1992


Non-equilibrium time evolution of higher order cumulants of conserved charges and event-by-event analysis
journal, January 2014


The PHOBOS perspective on discoveries at RHIC
journal, August 2005


Event-by-event fluctuations in heavy ion collisions and the QCD critical point
journal, November 1999


Multiplicity fluctuations in hadron-resonance gas
journal, October 2006


Thermodynamics at non-zero baryon number density: a comparison of lattice and hadron resonance gas model calculations
journal, October 2003


Pion interferometry in Au+Au collisions at s N N = 200 GeV
journal, April 2005


Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations
journal, January 2011


Conserved number fluctuations in a hadron resonance gas model
journal, November 2013


Effect of secondary protons on baryon and proton number cumulants in event-by-event analysis
journal, April 2013


Baryon number conservation and the cumulants of the net proton distribution
journal, January 2013


The QCD equation of state with dynamical quarks
journal, November 2010

  • Borsányi, Szabolcs; Endrődi, Gergely; Fodor, Zoltán
  • Journal of High Energy Physics, Vol. 2010, Issue 11
  • DOI: 10.1007/JHEP11(2010)077

Equation of state for physical quark masses
journal, March 2010


Net-baryon-, net-proton-, and net-charge kurtosis in heavy-ion collisions within a relativistic transport approach
journal, September 2012


Volume fluctuations and higher-order cumulants of the net baryon number
journal, September 2013


Space-time evolution of bulk QCD matter
journal, January 2007


Hadron resonance mass spectrum and lattice QCD thermodynamics
journal, August 2003


Comparison of chemical freeze-out criteria in heavy-ion collisions
journal, March 2006


Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC
journal, January 2014


J / ψ Suppression at Forward Rapidity in Pb-Pb Collisions at s NN = 2.76 TeV
journal, August 2012


Non-Gaussian Fluctuations near the QCD Critical Point
journal, January 2009


Phase diagram of QCD
journal, September 1998


The order of the quantum chromodynamics transition predicted by the standard model of particle physics
journal, October 2006


Signatures of the Tricritical Point in QCD
journal, November 1998


Fluctuations of Particle Ratios and the Abundance of Hadronic Resonances
journal, December 1999