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Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at √sNN=5.02 and 2.76 TeV

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Measurements of the production of muons from heavy-flavour hadron decays in Pb-Pb collisions at sNN=5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor RAA at sNN=5.02 TeV is measured at forward rapidity (2.5<y<4) as a function of transverse mome...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Berdnikova, Anastasia (Author) , Danisch, Meike (Author) , Feuillard, Victor (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Kim, Minjung (Author) , Köhler, Markus Konrad (Author) , Kroesen, Martin (Author) , López, Jorge (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schmah, Alexander (Author) , Schicker, Rainer (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Stiefelmaier, Stephan (Author) , Windelband, Bernd (Author)
Corporate Author: ALICE (Author)
Other Authors: Yüncü, Alperen (Other)
Format: Article (Journal)
Language:English
Published: 2 August 2021
In: Physics letters
Year: 2021, Volume: 820, Pages: 1-9
ISSN:1873-2445
DOI:10.1016/j.physletb.2021.136558
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2021.136558
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269321004986
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Author Notes:ALICE collaboration
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Summary:Measurements of the production of muons from heavy-flavour hadron decays in Pb-Pb collisions at sNN=5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor RAA at sNN=5.02 TeV is measured at forward rapidity (2.5<y<4) as a function of transverse momentum pT in central, semi-central, and peripheral collisions over a wide pT interval, 3<pT<20 GeV/c, in which muons from beauty-hadron decays are expected to take over from charm as the dominant source at high pT (pT>7 GeV/c). The RAA 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 RAA at sNN=5.02 TeV is similar to that at sNN=2.76 TeV. The precise RAA 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.
Item Description:Im Titel ist "NN" nach s tiefgestellt, der ganze Ausdruck "s NN" steht unter dem Wurzelsymbol
Gesehen am 09.03.2022
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2021.136558

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