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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00637282" target="_blank" >RIV/61389005:_____/25:00637282 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00637282

Výsledek na webu

<a href="https://link.springer.com/article/10.1140/epjc/s10052-024-13531-w" target="_blank" >https://link.springer.com/article/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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

85

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

86

Kód UT WoS článku

001509542300001

EID výsledku v databázi Scopus

2-s2.0-105013352086