Centrality dependence of nuclear suppression of D mesons in $p$+Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV

Abstract

In this paper we have shown theoretical model comparisons with ALICE results for average D mesons (D${}^0$, D${}^{+}$, D${}^{\ast +}$ and $D_s^{+}$) in $p$+Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV for various centralities. Transport calculations of AMPT and calculations from heavy quark pQCD model, NLO(MNR) have been used for the study of $p_T$ dependent nuclear modification factors in terms of collision centrality ($Q_{pPb}$) and the central-to-peripheral ratios ($Q_{cp}$) of D mesons. It is found that NLO model with its parametrized $k_T$ broadening scheme produces results those closely match with the published D-meson data of $p$+Pb collisions from ALICE. Likewise AMPT transport calculation shows a strong centrality dependence in results but underestimates the experimental data. The differences of both models with experimental data have been discussed.

Comments: 12 pages, 4 figures