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@ARTICLE{Acharya:225414,
author = {Acharya, Shreyasi and others},
title = {$\Lambda_\mathrm{c}^+$ production in {P}b-{P}b collisions
at $\sqrt{s_{\rm {NN}}} = 5.02$ {T}e{VUC}},
journal = {Physics letters / B B},
volume = {793},
issn = {0370-2693},
address = {Amsterdam},
publisher = {North-Holland Publ.},
reportid = {GSI-2020-00255, arXiv:1809.10922. CERN-EP-2018-261},
pages = {212 - 223},
year = {2019},
note = {19 pages, 3 captioned figures, 1 table, authors from page
14, published, figures at
http://alice-publications.web.cern.ch/node/4694Submitted to
Phys.Lett. ; publication: Phys.Lett. B793 (2019) 212-223 ;
SCOAP3 ccby4.0 "This is an open access article under the CC
BY license (http://creativecommons.org/licenses/by/4.0/).
Funded by SCOAP3."},
abstract = {A measurement of the production of prompt
$\Lambda_\mathrm{c}^+$ baryons in Pb–Pb collisions at
$\sqrt{s_{\rm NN}}$ = 5.02 TeV with the ALICE detector at
the LHC is reported. The $\Lambda_\mathrm{c}^+$ and
$\bar{\Lambda_\mathrm{c}}^-$ were reconstructed at
midrapidity (|y|<0.5) via the hadronic decay channel
$\Lambda_\mathrm{c}^+$→pK$_{\rm S}^0$ (and charge
conjugate) in the transverse momentum and centrality
intervals 6 < $p_{\rm T}$ < 12 GeV/ c and 0–80\%. The
$\Lambda_\mathrm{c}^+$/D$^0$ ratio, which is sensitive to
the charm quark hadronisation mechanisms in the medium, is
measured and found to be larger than the ratio measured in
minimum-bias pp collisions at $\sqrt{s}$ = 7 TeV and in
p–Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV. In
particular, the values in p–Pb and Pb–Pb collisions
differ by about two standard deviations of the combined
statistical and systematic uncertainties in the common
$p_{\rm T}$ interval covered by the measurements in the two
collision systems. The $\Lambda_\mathrm{c}^+$/D$^0$ ratio is
also compared with model calculations including different
implementations of charm quark hadronisation. The measured
ratio is reproduced by models implementing a pure
coalescence scenario, while adding a fragmentation
contribution leads to an underestimation. The
$\Lambda_\mathrm{c}^+$ nuclear modification factor, $R_{\rm
AA}$, is also presented. The measured values of the $R_{\rm
AA}$ of $\Lambda_\mathrm{c}^+$, D$_{\rm s}^+$ and
non-strange D mesons are compatible within the combined
statistical and systematic uncertainties. They show,
however, a hint of a hierarchy ($R_{\rm AA}^{D^0}$ < $R_{\rm
AA}^{D_\mathrm{s}^+}$ < $R_{\rm AA}^{\Lambda_\mathrm{c}^+}$)
, conceivable with a contribution from coalescence
mechanisms to charm hadron formation in the medium.},
keywords = {quark: hadronization (autogen) / heavy ion: scattering
(autogen) / p p: scattering (autogen) / statistical
(autogen) / charm (autogen) / transverse momentum (autogen)
/ hadronic decay (autogen) / fragmentation (autogen) / CERN
LHC Coll (autogen) / coalescence (autogen) / hierarchy
(autogen) / nucleus (autogen) / baryon (autogen) / ALICE
(autogen) / meson (autogen)},
cin = {ALI / DTL / CIT},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121},
pnm = {612 - Cosmic Matter in the Laboratory (POF3-612) / 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) / OAGSI - Open Access Publikation mit
Unterstützung des GSI Helmholtzzentrums für
Schwerionenforschung (OAGSI)},
pid = {G:(DE-HGF)POF3-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA / G:(DE-Ds200)OAGSI},
typ = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
eprint = {1809.10922},
howpublished = {arXiv:1809.10922},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:1809.10922;\%\%$},
UT = {WOS:000470064800035},
doi = {10.1016/j.physletb.2019.04.046},
url = {https://repository.gsi.de/record/225414},
}