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@ARTICLE{Acharya:364034,
author = {Acharya, Shreyasi and others},
title = {{F}irst measurement of {D}$^{*+}$ vector meson spin
alignment in {P}b–{P}b collisions at
$\sqrt{{s}_{\text{{NN}}}}={5}.0{2}$ {T}e{V}},
journal = {Journal of high energy physics},
volume = {10},
number = {10},
issn = {1126-6708},
address = {Heidelberg},
publisher = {Springer},
reportid = {GSI-2026-00217, arXiv:2504.00714. CERN-EP-2025-072},
pages = {94},
year = {2025},
note = {This article is distributed under the terms of the Creative
Commons Attribution License (CC-BY 4.0). Article funded by
SCOAP3.},
abstract = {The first measurement of prompt D$^{*+}$-meson spin
alignment in ultrarelativistic heavy-ion collisions with
respect to the direction orthogonal to the reaction plane is
presented. The spin alignment is quantified by measuring the
element ρ$_{00}$ of the diagonal spin-density matrix for
prompt D$^{*+}$ mesons with 4 < p$_{T}$< 30 GeV/c in two
rapidity intervals, |y|< 0.3 and 0.3 < |y|< 0.8, in central
(0–10\%) and midcentral (30–50\%) Pb–Pb collisions at
$\sqrt{{s}_{\text{NN}}}={5}.0{2}$ TeV. Evidence of spin
alignment ρ$_{00}$> 1/3 has been found for p$_{T}$> 15
GeV/c and 0.3 < |y|< 0.8 with a significance of 3.1σ. The
measured spin alignment of prompt D$^{*+}$ mesons is
compared with the one of inclusive J/ψ mesons measured at
forward rapidity (2.5 < y < 4).},
keywords = {Heavy Ion Experiments (autogen) / Particle Correlations and
Fluctuations (autogen) / QCD (autogen) / Quark Gluon Plasma
(autogen)},
cin = {ALI / DTL / CIT / EXM / ALICE@CERN},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121 /
I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
- HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
Strategic university cooperation GSI-U Heidelberg
(SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA) / STRONG-2020 - The strong
interaction at the frontier of knowledge: fundamental
research and applications (824093) / DFG project
G:(GEPRIS)283604770 - SFB 1258: Neutrinos und Dunkle Materie
in der Astro- und Teilchenphysik (NDM) (283604770) / DFG
project G:(GEPRIS)491382106 - Open-Access-Publikationskosten
/ 2025-2027 / GSI Helmholtzzentrum für Schwerionenforschung
(491382106)},
pid = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA / G:(EU-Grant)824093 /
G:(GEPRIS)283604770 / G:(GEPRIS)491382106},
experiment = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2504.00714},
howpublished = {arXiv:2504.00714},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2504.00714;\%\%$},
UT = {WOS:001628387400001},
doi = {10.1007/JHEP10(2025)094},
url = {https://repository.gsi.de/record/364034},
}