Nuclear modification factor of high pT heavy-flavour decay electrons in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV

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2.76 TeV
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The production of the high transverse momentum electrons from heavy-flavour (charm and bottom quark) decays was measured with the ALICE detector in Pb–Pb collisions at the LHC, at a centre-of-mass energy sqrt(s_NN) = 2.76 GeV per nucleon–nucleon collision. The pT-differential production yields at central rapidity, |y| < 0.7, were used to calculate the nuclear modification factor RAA with respect to a proton- proton reference obtained from the cross section measured at sqrt(s_NN) = 2.76 GeV (pT < 8 GeV/c) and a FONLL calculations (pT > 8 GeV/c). RAA shows a strong suppression (up to a factor of 4) in the 10 % most central Pb–Pb collisions in the range 3< pT <18 GeV/c and a weaker suppression (up to a factor of 2) in peripheral collisions.