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Title: Longitudinal dynamics and particle production in relativistic nuclear collisions

Abstract

This work presents a three-dimensional dynamical initialization model for relativistic heavy-ion collisions, implementing local energy-momentum conservation and baryon charge fluctuations at string junctions. Constraining parameters using experimental data from p + p collisions at various collision energies, the model provides a very good description of the charged hadron and net proton rapidity distributions in Au +Au collisions from 7.7 to 200 GeV and Pb + Pb collisions at 8.77 and 17.3 GeV. Here we demonstrate the importance of fluctuations of baryon densities to string junctions for describing net-proton distributions at collision energies of 62.4 and 200 GeV. Including this improved baryon stopping description along with the requirement of strangeness neutrality also yields a good description of identified particle yields as functions of the collision energy above 7.7 GeV. We further study asymmetric p + Al and (p,d, 3He) + Au collisions at the top RHIC energy and p + Pb, Xe + Xe, and Pb + Pb collisions at LHC energies. We identify the produced particle rapidity distributions in asymmetric collision systems as particularly useful for constraining models of the early-time longitudinal dynamics.

Authors:
ORCiD logo [1]; ORCiD logo [2]
  1. Wayne State Univ., Detroit, MI (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Wayne State Univ., Detroit, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
OSTI Identifier:
1872382
Alternate Identifier(s):
OSTI ID: 1903161; OSTI ID: 1991220
Report Number(s):
BNL-223072-2022-JAAM
Journal ID: ISSN 2469-9985; TRN: US2306874
Grant/Contract Number:  
SC0012704; SC0021969; SC0013460; PHY2012922; 2030508
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C
Additional Journal Information:
Journal Volume: 105; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; hydrodynamic models; particle and resonance production; relativistic heavy-ion collisions; quark-gluon plasma; strong interaction

Citation Formats

Shen, Chun, and Schenke, Björn. Longitudinal dynamics and particle production in relativistic nuclear collisions. United States: N. p., 2022. Web. doi:10.1103/physrevc.105.064905.
Shen, Chun, & Schenke, Björn. Longitudinal dynamics and particle production in relativistic nuclear collisions. United States. https://doi.org/10.1103/physrevc.105.064905
Shen, Chun, and Schenke, Björn. Wed . "Longitudinal dynamics and particle production in relativistic nuclear collisions". United States. https://doi.org/10.1103/physrevc.105.064905. https://www.osti.gov/servlets/purl/1872382.
@article{osti_1872382,
title = {Longitudinal dynamics and particle production in relativistic nuclear collisions},
author = {Shen, Chun and Schenke, Björn},
abstractNote = {This work presents a three-dimensional dynamical initialization model for relativistic heavy-ion collisions, implementing local energy-momentum conservation and baryon charge fluctuations at string junctions. Constraining parameters using experimental data from p + p collisions at various collision energies, the model provides a very good description of the charged hadron and net proton rapidity distributions in Au +Au collisions from 7.7 to 200 GeV and Pb + Pb collisions at 8.77 and 17.3 GeV. Here we demonstrate the importance of fluctuations of baryon densities to string junctions for describing net-proton distributions at collision energies of 62.4 and 200 GeV. Including this improved baryon stopping description along with the requirement of strangeness neutrality also yields a good description of identified particle yields as functions of the collision energy above 7.7 GeV. We further study asymmetric p + Al and (p,d, 3He) + Au collisions at the top RHIC energy and p + Pb, Xe + Xe, and Pb + Pb collisions at LHC energies. We identify the produced particle rapidity distributions in asymmetric collision systems as particularly useful for constraining models of the early-time longitudinal dynamics.},
doi = {10.1103/physrevc.105.064905},
journal = {Physical Review. C},
number = 6,
volume = 105,
place = {United States},
year = {Wed Jun 08 00:00:00 EDT 2022},
month = {Wed Jun 08 00:00:00 EDT 2022}
}

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