Measurement of the production cross section of prompt Ξc0 baryons in p-Pb collisions at root sNN=5.02 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00388759" target="_blank" >RIV/68407700:21340/25:00388759 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1140/epjc/s10052-024-13531-w" target="_blank" >https://doi.org/10.1140/epjc/s10052-024-13531-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-024-13531-w" target="_blank" >10.1140/epjc/s10052-024-13531-w</a>

Result language

angličtina

Original language name

Measurement of the production cross section of prompt Ξc0 baryons in p-Pb collisions at root sNN=5.02 TeV

Original language description

The transverse momentum ( p(T)) differential production cross section of the promptly produced charmstrange baryon Xi(0)(c) (and its charge conjugate <(Xi(0)(c))over bar>) is measured at midrapidity via its hadronic decay into pi(+)Xi(-) in p-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision root s(NN) = 5.02 TeV with the ALICE detector at the LHC. The Xi(0)(c) nuclear modification factor ( R-pPb), calculated from the cross sections in pp and p-Pb collisions, is presented and compared with the RpPb of Lambda(+)(c) baryons. The ratios between the p(T)-differential production cross section of Xi(0)(c) baryons and those of D-0 mesons and Lambda(+)(c) baryons are also reported and compared with results at forward and backward rapidity from the LHCb Collaboration. Themeasurements of the production cross section of prompt Xi(0)(c) baryons are compared with a model based on perturbative QCD calculations of charm-quark production cross sections, which includes only cold nuclear matter effects in p-Pb collisions, and underestimates the measurement by a factor of about 50. This discrepancy is reduced when the data is compared with a model that includes string formation beyond leading-colour approximation or in which hadronisation is implemented via quark coalescence. The p(T)-integrated cross section of prompt Xi(0)(c)-baryon production at midrapidity extrapolated down to p(T) = 0 is also reported. These measurements offer insights and constraints for theoretical calculations of the hadronisation process. Additionally, they provide inputs for the calculation of the charm production cross section in p-Pb collisions at midrapidity.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

85

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

22

Pages from-to

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UT code for WoS article

001509542300001

EID of the result in the Scopus database

2-s2.0-105013352086