Production of muons from heavy-flavour hadron decays at forward rapidity in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02\mathrm{TeV}$}

Abstract

The measurement of the production of single muons from heavy-flavour hadron decays at forward rapidity in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02\mathrm{TeV}$ collected in 2015 is presented as a function of transverse momentum ($p_{\mathrm{T}}$) and collision centrality. A strong suppression of the yield is observed at high $p_{\mathrm{T}}$ in the most central collisions compared to the binary-scaled expectation from pp collisions at the same energy. The $p_{\mathrm{T}}$-integrated nuclear modification factor ($R_{\mathrm{AA}}$) 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 $\sqrt{s_{\mathrm{NN}}}=2.76\mathrm{TeV}$ and with transport model predictions are shown. A similar suppression is measured at both $\sqrt{s_{\mathrm{NN}}}=2.76\mathrm{TeV}$ and 5.02 TeV. The results available from $p_{\mathrm{T}}=$7 GeV/$c$ up to $p_{\mathrm{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.

these are the proceedings of Hard Probes Conference 2016 (22-27 September)

References in corpus (1)

• Reference heavy flavour cross sections in pp collisions at sqrt(s) = 2.76 TeV, using a pQCD-driven sqrt(s)-scaling of ALICE measurements at sqrt(s) = 7 TeV