Heavy flavor production in pp and AA collisions at the LHC

2012/08/03 by W. M. Alberico, Andrea Beraudo, Alberico, W. M. +11
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1208.0705

openalex publication_date 2012/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A refined version of a multi-step calculation of heavy-flavor observables in pp and AA collisions has been developed, based on pQCD at NLO accuracy followed by parton shower evolution to describe heavy-quark production and on the relativistic Langevin equation to describe their stochastic evolution in the QCD plasma. Then, hadronization is modeled through an implementation of fragmentation functions based on pQCD and constrained by e⁺e^- collider data. Results of our calculations can be compared with recent measurements performed at the LHC in Pb--Pb collisions at √s_NN=2.76 TeV: nuclear modification factor R_AA of the p_T spectra at mid-rapidity of heavy-flavor decay electrons and of exclusively reconstructed open-charm mesons at different centralities, as well as their elliptic-flow v₂(p_T) in semi-central collisions. To test the validity of our setup for such studies, its predictions are also checked against the p_T spectra measured in pp collisions at √(s)=7 TeV and 2.76 TeV.

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