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

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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Hauptverfasser: Acharya, Shreyasi (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Arslandok, Mesut (VerfasserIn) , Berdnikova, Anastasia (VerfasserIn) , Danisch, Meike (VerfasserIn) , Feuillard, Victor (VerfasserIn) , Glässel, Peter (VerfasserIn) , Kim, Jiyoung (VerfasserIn) , Kim, Minjung (VerfasserIn) , Köhler, Markus Konrad (VerfasserIn) , Kroesen, Martin (VerfasserIn) , López, Jorge (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Reygers, Klaus (VerfasserIn) , Schmah, Alexander (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Schmidt, Marten Ole (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Stiefelmaier, Stephan (VerfasserIn) , Windelband, Bernd (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Weitere Verfasser: Yüncü, Alperen (BerichterstatterIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2 August 2021
In: Physics letters
Year: 2021, Jahrgang: 820, Pages: 1-9
ISSN:1873-2445
DOI:10.1016/j.physletb.2021.136558
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2021.136558
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269321004986
Volltext
Verfasserangaben:ALICE collaboration

MARC

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246 3 3 |a Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at square root s NN = 5.02 and 2.76 TeV 
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520 |a 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. 
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