Speaker
Description
The study of the production of hadrons containing charm and beauty quarks in proton-proton (pp) collisions at the LHC provides a way to test calculations based on perturbative QCD at high collision energy. Heavy-flavour hadron production in p-Pb collisions is sensitive to Cold Nuclear Matter (CNM) effects. In addition to transverse momentum and rapidity differential trends, measurements as a function of multiplicity and of angular correlations provide further constraints on the description of heavy-flavour production in pp and p-Pb collisions. The measurement of heavy-flavour production in pp collisions as a function of the charged-particle multiplicity could provide further insights into the role of multi-parton interactions and the interplay between hard and soft mechanisms in particle production. The multiplicity-differential measurements of heavy-flavour production in p-Pb collisions are sensitive to the dependence of CNM effects on the collision
geometry and on the density of final-state particles. The measurement of azimuthal correlations of D mesons and charged particles in pp collisions provides a way to characterize charm production and fragmentation processes, while in p-Pb collisions they could give insights into possible collective effects in small systems.
Prompt D$^{0}$, D$^{+}$ and D$^{*+}$ meson yields measured as a function of charged-particle multiplicity in pp collisions at $\sqrt{s}$ = 7 TeV will be presented, along with results obtained for inclusive J/$\psi$ and non-prompt J/$\psi$. The measurement of the yields of D mesons and of electrons from heavy-flavour hadron decays as a function of charged-particle multiplicity in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be shown as well. The centrality dependence of heavy-flavour nuclear modification factor will also be discussed.
The measurement of azimuthal correlations of D mesons and charged particles in pp collisions at $\sqrt{s}$ = 7 TeV and in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will also be presented.
Comparisons with model calculations will be discussed.
| Presentation type | Oral |
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