Production of D⁰ meson in pp and PbPb Collisions at √S_NN = 5.02 TeV with CMS

Massachusetts Institute of Technology

^* e-mail: yenjie@mit.edu

Published online: 2 February 2018

Abstract

Heavy flavour mesons are used as powerful tools for the study of the strongly interacting medium in heavy ion collisions as heavy quarks are sensitive to the transport properties of the medium. In these proceedings, D⁰ nuclear modification factors, comparing the yields in PbPb and pp collisions, and azimuthal anisotropies in PbPb collisions are reported. Prompt D⁰ mesons and their antiparticles have been measured with the CMS detector via the hadronic decay channels D⁰ → K⁻π⁺ and D⁰ → K⁺π⁻ in PbPb and pp collisions at a centre-of-mass energy of 5.02 TeV. Nonprompt D⁰ from b quark decays are subtracted. The D⁰ results are compared to inclusive charged particles, non-prompt J/ψ mesons from b decays and B⁺ mesons in order to reveal possible meson mass dependence of the observables.