Measurement of beauty production via non-prompt charm hadrons 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%2F24%3A00382140" target="_blank" >RIV/68407700:21340/24:00382140 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/JHEP11(2024)148" target="_blank" >https://doi.org/10.1007/JHEP11(2024)148</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP11(2024)148" target="_blank" >10.1007/JHEP11(2024)148</a>

Result language

angličtina

Original language name

Measurement of beauty production via non-prompt charm hadrons in p-Pb collisions at root sNN=5.02 TeV

Original language description

The production cross sections of D-0, D+, and Lambda(+)(c) hadrons originating from beauty-hadron decays (i.e. non-prompt) were measured for the first time at midrapidity in protonlead (p-Pb) collisions at the center-of-mass energy per nucleon pair of root s(NN) = 5.02TeV. Nuclear modification factors (RpPb) of non-prompt D-0, D+, and Lambda(+)(c) are calculated as a function of the transverse momentum ( p(T)) to investigate the modification of the momentum spectra measured in p-Pb collisions with respect to those measured in proton-proton (pp) collisions at the same energy. The RpPb measurements are compatible with unity and with the measurements in the prompt charm sector, and do not show a significant p(T) dependence. The p(T)-integrated cross sections and p(T)-integrated RpPb of non-prompt D-0 and D+ mesons are also computed by extrapolating the visible cross sections down to p(T) = 0. The non-prompt D-meson R-pPb integrated over p(T) is compatible with unity and with model calculations implementing modification of the parton distribution functions of nucleons bound in nuclei with respect to free nucleons. The non-prompt Lambda(+)(c) /D-0 and D+/D-0 production ratios are computed to investigate hadronisation mechanisms of beauty quarks into mesons and baryons. The measured ratios as a function of pT display a similar trend to that measured for charm hadrons in the same collision system.

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

2024

Confidentiality

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

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

2024

Issue of the periodical within the volume

11

Country of publishing house

IT - ITALY

Number of pages

36

Pages from-to

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UT code for WoS article

001435368200001

EID of the result in the Scopus database

2-s2.0-105003039770