Azimuthal angular correlations between heavy-flavour electrons and charged hadrons in semi-central lead-lead collisions at 2.76 TeV at ALICE

Abstract

The azimuthal angular correlation between heavy-flavour decay electrons and charged hadrons was measured in semi-central Pb-Pb collisions at 2.76 TeV for semi-central (20-50%) events. The analysis is done by using the data samples collected with semi-central (20-50%) trigger. The ALICE Time Projection Chamber (TPC) and Electromagentic Calorimeter (EMCal) were used for electron identification. The non-heavy flavour electron background was removed by using the invariant mass method.

The near-side yield is measured in this analysis by fitting a Gaussian and the flow function on the near-side. The near-side yield from this centrality selection is compared to the one from the most central (0-8%) collisions to measure possible modifications and also to that in 7 TeV pp collisions to study the modification of the fragmentation of the correlation strength in Pb-Pb collisions.