Studies of Strange and Non-Strange Beauty Productions in PbPb Collisions with the CMS Detector

Abstract

Beauty quarks are considered as one of the best probes of the strongly interacting medium created in relativistic heavy-ion collisions because they are predominantly produced via initial hard scatterings. Our measurements of B mesons productions provide information on the diffusion of beauty quarks and the flavor dependence of in-medium energy loss. In these studies, clarifying the hadronization mechanism is crucial for understanding the transport properties of beauty quarks. We propose to show our experimental results on three sets of particles: nonprompt $J/\psi$ and $D^0$, $B_s^0$ and $B^{+}$, and prompt $D_s^{+}$ and $D^0$. Our measurements of $B_s^0$ production can shed light on the mechanisms of beauty recombination in the medium. In addition, the measurements of mesons productions containing both strange and beauty quarks can provide more information about strangeness enhancement in the quark-gluon plasma. The ratio of $B_s^0$ over $B^{+}$ nuclear modification factors at a nucleon-nucleon center-of-mass energy of 5.02 TeV, using fully reconstructed B mesons with the CMS detector, are presented. We will also show the nonprompt $J/\psi$ and $D^0$ from the partial B mesons decay chains as well as our precise measurement the prompt $D_s^{+}$ to $D^0$ ratio in pp and PbPb collisions.

Submitted for Publication in Quark Matter 2019 Conference Proceedings, Nuclear Physics A

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