Production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV

S. Acharya, H.A. Andrews, L.S. Barnby, David Evans, K.L. Graham, P.G. Jones, A. Jusko, M. Krivda, R. Lietava, O. Villalobos Baillie, N. Zardoshti, ALICE Collaboration

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Abstract

Abstract The production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV was studied for 2 < pT < 16 GeV/c with the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) and backward (Pb-going direction) rapidity, in the ranges of rapidity in the centre-of-mass system (cms) 2.03 < y cms < 3.53 and − 4.46 < y cms < − 2.96 , respectively. The production cross sections and nuclear modification factors are presented as a function of transverse momentum ( pT ). At forward rapidity, the nuclear modification factor is compatible with unity while at backward rapidity, in the interval 2.5 < pT < 3.5 GeV/c, it is above unity by more than 2σ. The ratio of the forward-to-backward production cross sections is also measured in the overlapping interval 2.96 < | y cms | < 3.53 and is smaller than unity by 3.7σ in 2.5 < pT < 3.5 GeV/c. The data are described by model calculations including cold nuclear matter effects.
Original languageEnglish
Pages (from-to)459-472
Number of pages14
JournalPhysics Letters B
Volume770
Early online date28 Mar 2017
DOIs
Publication statusPublished - 10 Jul 2017

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