2017/06/24 by Zhang, Zuman
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Nuclear Experiment (nucl-ex)
paper · doi:10.48550/arxiv.1706.07943
The measurement of the production of single muons from heavy-flavour hadron decays at forward rapidity in Pb--Pb collisions at √s\rm NN = 5.02~\rm TeV collected in 2015 is presented as a function of transverse momentum (p\rm T) and collision centrality. A strong suppression of the yield is observed at high p\rm T in the most central collisions compared to the binary-scaled expectation from pp collisions at the same energy. The p\rm T-integrated nuclear modification factor (R\rm AA) as function of the number of participating nucleons indicates an increase of the suppression from peripheral to central collisions. Comparisons with the results for Pb--Pb collisions at √s\rm NN = 2.76~\rm TeV and with transport model predictions are shown. A similar suppression is measured at both √s\rm NN = 2.76~\rm TeV and 5.02 TeV. The results available from p\rm T =7 GeV/c up to p\rm T =~20 GeV/c, will provide new constraints on transport model ingredients and new insights on the understanding of the evolution of the hot and dense matter formed in ultra-relativistic heavy-ion collisions.