Search for nuclear modifications of B${}^{+}$ meson production in pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV

Abstract

Nuclear medium effects on B${}^{+}$ meson production are studied using the binary-collision scaled cross section ratio between events of different charged-particle multiplicities from proton-lead collisions. Data, collected by the CMS experiment in 2016 at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV, corresponding to an integrated luminosity of 175 nb${}^{-1}$, were used. The scaling factors in the ratio are determined using a novel approach based on the Z $\to$ ${\mu }^{+}{\mu }^{-}$ cross sections measured in the same events. The scaled ratio for B${}^{+}$ is consistent with unity for all event multiplicities, putting stringent constraints on nuclear modification for heavy flavor.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-22-001 (CMS Public Pages)

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