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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LM2023040" target="_blank" >LM2023040: Výzkumná infrastruktura pro experimenty v CERN</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2024

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

36

Strana od-do

—

Kód UT WoS článku

001435368200001

EID výsledku v databázi Scopus

2-s2.0-105003039770