Search for a high-mass dimuon resonance produced in association with b quark jets at $\sqrt{s}$=13 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 signal events with exactly one or more than one $\mathrm{b}$ quark jet. Results are also interpreted in a lepton-flavor-universal model with $\mathrm{Z'}$ 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 $\mathrm{Z'}$ boson with a mass $m_{\mathrm{Z'}}=350~\mathrm{GeV}$ ($2~\mathrm{TeV}$) and $|\delta_{\mathrm{bs}}| < 0.25$, 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 $\mathrm{Z'}$ 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 $\mathrm{Z'}$ boson with $350