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

Submission Date: 
22/09/2016
Article Information
Accepted date: 
24/05/2017
Publication date: 
29/05/2017
HEP Data
No HEP Data: 
0
Submission Form
System: 
Pb-Pb
Energy: 
2.76 TeV
Abstract Plain Text: 

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.