Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at root s(NN)=5.02 and 2.76 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00549097" target="_blank" >RIV/68378271:_____/21:00549097 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/21:00549097 RIV/68407700:21340/21:00354685

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2021.136558" target="_blank" >https://doi.org/10.1016/j.physletb.2021.136558</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2021.136558" target="_blank" >10.1016/j.physletb.2021.136558</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at root s(NN)=5.02 and 2.76 TeV

Popis výsledku v původním jazyce

Measurements of the production of muons from heavy-flavour hadron decays in Pb-Pb collisions at root s(NN) = 5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor R-AA at root s(NN) = 5.02 TeV is measured at forward rapidity (2.5 < y < 4) as a function of transverse momentum p(T) in central, semi-central, and peripheral collisions over a wide p(T) interval, 3 < p(T) < 20 GeV/c, in which muons from beauty-hadron decays are expected to take over from charm as the dominant source at high p(T) (p(T) > 7 GeV/c). The R-AA shows an increase of the suppression of the yields of muons from heavy-flavour hadron decays with increasing centrality. A suppression by a factor of about three is observed in the 10% most central collisions. The R-AA at root s(NN) = 5.02 TeV is similar to that at root s(NN) = 2.76 TeV. The precise R-AA measurements have the potential to distinguish between model predictions implementing different mechanisms of parton energy loss in the high-density medium formed in heavy-ion collisions. They place important constraints for the understanding of the heavy-quark interaction with the hot and dense QCD medium.

Název v anglickém jazyce

Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at root s(NN)=5.02 and 2.76 TeV

Popis výsledku anglicky

Measurements of the production of muons from heavy-flavour hadron decays in Pb-Pb collisions at root s(NN) = 5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor R-AA at root s(NN) = 5.02 TeV is measured at forward rapidity (2.5 < y < 4) as a function of transverse momentum p(T) in central, semi-central, and peripheral collisions over a wide p(T) interval, 3 < p(T) < 20 GeV/c, in which muons from beauty-hadron decays are expected to take over from charm as the dominant source at high p(T) (p(T) > 7 GeV/c). The R-AA shows an increase of the suppression of the yields of muons from heavy-flavour hadron decays with increasing centrality. A suppression by a factor of about three is observed in the 10% most central collisions. The R-AA at root s(NN) = 5.02 TeV is similar to that at root s(NN) = 2.76 TeV. The precise R-AA measurements have the potential to distinguish between model predictions implementing different mechanisms of parton energy loss in the high-density medium formed in heavy-ion collisions. They place important constraints for the understanding of the heavy-quark interaction with the hot and dense QCD medium.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

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

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

820

Číslo periodika v rámci svazku

SEP

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

136558

Kód UT WoS článku

000713124400041

EID výsledku v databázi Scopus

2-s2.0-85113164800