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arXiv · 1208.5411

Measurement of electrons from heavy-flavour decays in pp and Pb-Pb collisions with ALICE at the LHC

MinJung Kweon
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Abstract

The ALICE experiment has measured at mid-rapidity electrons from heavy-flavour decays in pp collisions at $\sqrt{s}$ = 2.76 and 7 TeV, and in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV. In pp collisions, electrons from charm-hadron and from beauty-hadron decays are identified by applying cuts on displaced vertices. The relative yield of electrons from beauty-hadron decays to those from heavy-flavour decays is extracted using electron-hadron correlations. Results are compared to pQCD-based calculations. In Pb-Pb collisions, the $p_{\rm T}$ dependence of the nuclear modification factor of electrons from heavy-flavour decays is presented in two centrality classes. The status on the analysis of electrons from beauty-hadron decays is reported in Pb-Pb collisions, in view of the measurement of the corresponding nuclear modification factor.

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MinJung Kweon. 2012-10-11. Measurement of electrons from heavy-flavour decays in pp and Pb-Pb collisions with ALICE at the LHC. https://doi.org/10.1016/j.nuclphysa.2012.12.049

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