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@ARTICLE{Tumasyan:617529,
author = {Tumasyan, Armen and others},
collaboration = {{CMS Collaboration}},
title = {{M}ultiplicity and transverse momentum dependence of
charge-balance functions in p{P}b and {P}b{P}b collisions at
{LHC} energies},
journal = {Journal of high energy physics},
volume = {2024},
number = {8},
issn = {1029-8479},
address = {[Trieste]},
publisher = {SISSA},
reportid = {PUBDB-2024-06860, arXiv:2307.11185. CMS-HIN-21-017.
CERN-EP-2023-075},
pages = {148},
year = {2024},
abstract = {Measurements of the charge-dependent two-particle angular
correlation function in proton-lead (pPb) collisions at a
nucleon-nucleon center-of-mass energy of $
\sqrt{s_{\textrm{NN}}} $ = 8.16 TeV and lead-lead (PbPb)
collisions at $ \sqrt{s_{\textrm{NN}}} $ = 5.02 TeV are
reported. The pPb and PbPb data sets correspond to
integrated luminosities of 186 nb$^{−1}$ and 0.607
nb$^{−1}$, respectively, and were collected using the CMS
detector at the CERN LHC. The charge-dependent correlations
are characterized by balance functions of same- and
opposite-sign particle pairs. The balance functions, which
contain information about the creation time of charged
particle pairs and the development of collectivity, are
studied as functions of relative pseudorapidity (∆η) and
relative azimuthal angle (∆ϕ), for various multiplicity
and transverse momentum (p$_{T}$) intervals. A multiplicity
dependence of the balance function is observed in ∆η and
∆ϕ for both systems. The width of the balance functions
decreases towards high-multiplicity collisions in the
momentum region < 2 GeV, for pPb and PbPb results. Integrals
of the balance functions are presented in both systems, and
a mild dependence of the charge-balancing fractions on
multiplicity is observed. No multiplicity dependence is
observed at higher transverse momentum. The data are
compared with hydjet, hijing, and ampt generator
predictions, none of which capture completely the
multiplicity dependence seen in the data. The comparison of
results with different center-of-mass energies suggests that
the balance functions become narrower at higher energies,
which is consistent with the idea of delayed hadronization
and the effect of radial flow.[graphic not available: see
fulltext]},
keywords = {experimental results (INSPIRE) / heavy ion: scattering
(INSPIRE) / p nucleus: scattering (INSPIRE) / multiplicity:
dependence (INSPIRE) / transverse momentum: momentum
spectrum (INSPIRE) / correlation: charge dependence
(INSPIRE) / angular correlation: two-particle (INSPIRE) /
CERN LHC Coll (INSPIRE) / charged particle (INSPIRE) /
correlation function (INSPIRE) / transverse momentum
dependence (INSPIRE) / rapidity (INSPIRE) / CMS (INSPIRE) /
impact parameter: dependence (INSPIRE) / Heavy Ion
Experiments (autogen) / Particle Correlations and
Fluctuations (autogen) / Relativistic Heavy Ion Physics
(autogen)},
cin = {CMS},
ddc = {530},
cid = {I:(DE-H253)CMS-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611) /
HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz
Graduate School for the Structure of Matter
$(2019_IVF-HIDSS-0002)$ / DFG project G:(GEPRIS)390833306 -
EXC 2121: Quantum Universe (390833306)},
pid = {G:(DE-HGF)POF4-611 / $G:(DE-HGF)2019_IVF-HIDSS-0002$ /
G:(GEPRIS)390833306},
experiment = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2307.11185},
howpublished = {arXiv:2307.11185},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2307.11185;\%\%$},
UT = {WOS:001412629800001},
doi = {10.1007/JHEP08(2024)148},
url = {https://bib-pubdb1.desy.de/record/617529},
}