Abstract
Measurements of heavy-flavour decay leptons with ALICE
Highlights
IntroductionOne of the most interesting results in p–Pb collisions was the observation in high multiplicity events of two long-range ridge-like structures in the distributions of angular correlations between two charged particles after removing correlations due to jets as extracted from low-multiplicity collisions [6,7,8]
Where TAA is the nuclear overlap function for the considered centrality interval obtained via Glauber MC calculations [9], dNAA/dpT is the pT-differential yield in Pb–Pb collisions and dσpp/dpT is the pT-differential cross section in p√p collisions
In central Pb–Pb collisions, the yields of electrons at mid rapidity and muons at forward rapidity from heavy-flavour hadron decays are strongly suppressed at pT >3 GeV/c with respect to the binary-collisions scaled cross section in pp collisions at the same energy
Summary
One of the most interesting results in p–Pb collisions was the observation in high multiplicity events of two long-range ridge-like structures in the distributions of angular correlations between two charged particles after removing correlations due to jets as extracted from low-multiplicity collisions [6,7,8]. This double-ridge structure can be interpreted as due to a collective expansion of the final-state particles or to gluon saturation effects in the initial state in the Colour Glass Condensate (GCG) framework. Azimuthal correlations between electrons from heavy-flavour hadron decays and charged hadrons in p–Pb collisions are shown as well
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