22-29 July 2015
Europe/Vienna timezone

Measurements of open heavy-flavour production in pp collisions with ALICE at the LHC

Jul 23, 2015, 12:00 PM


talk QCD and Hadronic Physics QCD and Hadronic Physics


Grazia Luparello (Universita e INFN, Trieste (IT))


Heavy quarks, i.e. charm and beauty, are produced in hard parton scatterings in the initial stages of hadronic collisions. The study of their production in pp collisions at LHC energies provides, therefore, a test of perturbative QCD calculations at the highest collision energies available. In addition to the heavy-flavour production cross sections, more differential measurements provide further information about the particle-production mechanisms. In particular, the study of heavy-flavour production as a function of charged-particle multiplicity probes the interrelation of hard and soft mechanisms in particle production and the role of multi-parton interactions in charm production. The measurement of angular correlations between heavy-flavour hadrons and charged particles provides information on the heavy-quark fragmentation. Furthermore, the study of the angular correlations between heavy-flavour decay electrons and charged hadrons allows for a statistical separation of the charm and beauty contributions to the yield of heavy-flavour decay electrons. In this contribution, an overview of the most recent ALICE results on the open heavy-flavour production in pp collisions will be given. The open heavy-flavour production cross sections and their dependence on charged-particle multiplicity in pp collisions will be presented. The azimuthal correlations of D mesons and heavy-flavour decay electrons with charged hadrons in pp collisions will be discussed.

Primary author

Grazia Luparello (Universita e INFN, Trieste (IT))

Presentation materials