Séminaire de Doctorant : Muons from heavy-flavour hadron decays in p-Pb Collisions at sqrt(s_NN)=5.02 TeV with ALICE

par M. Shuang LI (LPC-Clermont)

vendredi 7 nov. 2014, 14:30 → 15:30 Europe/Paris

Amphi 125 (Dept.Phys.)

In high-energy heavy-ion collisions, heavy quarks are regarded as efficient probes of the properties of the QGP (Quark Gluon Plasma) as they are created on a very short time scale in initial hard parton scattering processes and subsequently interact with the medium. In the high transverse momentum region, the suppression of the yield of heavy-flavour production, quantified by the nuclear modification factor, is used to study the heavy quark in-medium energy loss mechanisms. In order to disentangle hot and cold nuclear matter effects, the nuclear modification factor has to be measured in p-Pb collisions where the formation of the QGP is not expected. With ALICE, the detector designed and optimized for heavy-ion physics at the LHC, open heavy flavours can be measured at forward rapidity using semi-muonic decays. The latest results in p-Pb collisions on the production cross section, nuclear modification factor and forward-to-backward ratio of muons from heavy-flavour hadron decays are performed at forward and backward rapidity corresponding to the center-of-mass rapidity regions (2.5,3.54) and (-4,-2.96), respectively. Comparisons with theoretical predictions will be discussed.

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