from 28 November 2016 to 2 December 2016
Hotel Rincón del Arco
Mexico/General timezone
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Hotel Rincón del Arco - Salón Giralda

Open heavy flavour and quarkonium production as a function of the multiplicity in pp and p-Pb collisions with ALICE at the LHC



Primary authors

Abstract content

Open and hidden heavy flavour production measurements in proton-proton (pp) collisions at the Large Hadron Collider (LHC) provide a test for perturbative Quantum Chromodynamics (pQCD) inspired models. In particular, the correlation of the heavy-flavour hadron yields with charged particles produced in hadronic collisions can shed light on their production mechanism and on the interplay between hard and soft mechanisms in particle production. At the LHC energies multiple parton-parton interactions, i.e. several hard partonic interactions occurring in a single pp collision, may also affect heavy-flavour production.

At the LHC, proton-lead (p-Pb) collisions are used to disentangle the Cold Nuclear Matter (CNM) effects to those related to the presence of the Quark-Gluon Plasma, a deconfined state of quarks and gluons. Additional insight into CNM effects can be obtained by measuring the heavy flavour hadron yields as a function of the multiplicity of charged particles produced in p-Pb collisions.

In this talk the D-meson yields as a function of the charged-particle multiplicity in pp collisions at $\sqrt{s}$ = 7 TeV, together with the results for inclusive and non-prompt J/$\psi$ will be presented. For p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV, the yields of inclusive J/$\psi$, D mesons and of electrons from heavy-flavour hadron decays as a function of the charged-particle multiplicity will be discussed.