Search for a high mass dimuon resonance associated with $\mathrm{b}$ quark jets at $\sqrt{s}=13~\mathrm{TeV}$

A search for high-mass dimuon resonance production in association with one or more $\mathrm{b}$ quark jets is presented. The study uses proton-proton collision data collected with the CMS detector at the LHC corresponding to an integrated luminosity of $138~\mathrm{fb}^{-1}$ at a center-of-mass energy of $13~\mathrm{TeV}$. Model-independent limits are derived on the number of events with $\mathrm{b}$ quark jets. Results are also interpreted in a lepton flavor-universal model with $\mathrm{Z}^{\prime}$ boson couplings to a $\mathrm{bb}$ quark pair ($g_{\mathrm{b}}$), an $\mathrm{sb}$ quark pair ($g_{\mathrm{b}}{}\delta_{\mathrm{bs}}$), and any same-flavor charged lepton ($g_{\ell}$) or neutrino pair ($g_{\nu}$), with $g_{\nu}=g_{\ell}$. For a $\mathrm{Z}^{\prime}$ boson with a mass of $350~\mathrm{GeV}$ ($2~\mathrm{TeV}$) and $\delta_{\mathrm{bs}}\leq0.25$, the majority of the parameter space with $0.0057 < g_{\ell} < 0.35$ ($0.25 < g_{\ell} < 0.43$) and $0.0079 < g_{\mathrm{b}} < 0.46$ ($0.34 < g_{\mathrm{b}} < 0.57$) is excluded at $95\%$ confidence level. Finally, constraints are set on a specific $\mathrm{Z}^{\prime}$ model with parameters consistent with low-energy $\mathrm{b}\to\mathrm{s}\ell\ell$ measurements. In this scenario, most of the allowed parameter space is excluded for a $\mathrm{Z}^{\prime}$ boson with a mass $\leq500~\mathrm{GeV}$ while the constraints are less stringent for higher $\mathrm{Z}^{\prime}$ mass hypotheses.