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@ARTICLE{Koch:356907,
author = {Koch, Volker and Marczenko, Micha?? and Redlich, Krzysztof
and Sasaki, Chihiro},
title = {{F}luctuations and correlations of baryonic chiral
partners},
journal = {Physical review / D},
volume = {109},
issn = {2470-0010},
address = {Ridge, NY},
publisher = {American Physical Society},
reportid = {GSI-2025-00287, arXiv:2308.15794},
pages = {014033},
year = {2024},
note = {Published by the American Physical Society under the terms
ofthe Creative Commons Attribution 4.0 International
license. Further distribution of this work must maintain
attribution to the author(s) and the published article’s
title, journal citation, and DOI. Funded by SCOAP3},
abstract = {The exploration of critical phenomena in phase transitions
of strongly interacting matter governed by quantum
chromodynamics (QCD) is one of the goals of present
ultrarelativistic heavy-ion collision experiments at BNL and
CERN. The key research direction is to locate the putative
critical point on the phase diagram of QCD linked to the
chiral symmetry restoration at finite temperature and/or
density. One of the main theoretical tools used for this
purpose is the fluctuations of conserved charges, such as
the net-baryon number. However, due to experimental
limitations, analyses of heavy-ion collision data suffer
from a very doubtful basing of the net-proton number being a
proxy for the total net-baryon number fluctuations. In this
work, we use the parity doublet model to investigate the
fluctuations of the net-baryon number density in hot and
dense hadronic matter. The model accounts for chiral
criticality within the mean-field approximation. We focus on
the qualitative properties and systematics of the first- and
second-order susceptibility of the net-baryon number
density, and their ratios for nucleons of positive and
negative parity, as well as their correlator. We show that
the fluctuations of the positive-parity nucleon do not
necessarily reflect the fluctuations of the total net-baryon
number density at the phase boundary of the chiral phase
transition. We also investigate the nontrivial structure of
the correlator. Furthermore, we discuss and quantify the
differences between the fluctuations of the net-baryon
number density in the vicinity of the chiral and liquid-gas
phase transition in nuclear matter. We indicate a possible
relevance of our results with the interpretation of the
experimental data on net-proton number fluctuations in
heavy-ion collisions.},
cin = {EXM},
ddc = {530},
cid = {I:(DE-Ds200)EXM-20080818OR100},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) /
STRONG-2020 - The strong interaction at the frontier of
knowledge: fundamental research and applications (824093)},
pid = {G:(DE-HGF)POF4-612 / G:(EU-Grant)824093},
experiment = {$EXP:(DE-Ds200)no_experiment-20200803$},
typ = {PUB:(DE-HGF)16},
eprint = {2308.15794},
howpublished = {arXiv:2308.15794},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2308.15794;\%\%$},
UT = {WOS:001183234700004},
doi = {10.1103/PhysRevD.109.014033},
url = {https://repository.gsi.de/record/356907},
}