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Test of lepton flavor universality violation in semileptonic $B_c^+$ meson decays at CMS
A measurement of the ratio of branching fractions $\mathrm{R}(\mathrm{J}/\psi) = \mathcal{B}(\mathrm{B}_{\mathrm{c}}^+\rightarrow\mathrm{J}/\psi\tau^+\nu_{\tau}) /$ $ \mathcal{B}(\mathrm{B}_{\mathrm{c}}^+\rightarrow\mathrm{J}/\psi\mu^+\nu_{\mu})$ in the $\mathrm{J}/\psi\rightarrow\mu^+\mu^-$, $\tau^...
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2023
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Acceso en línea: | http://cds.cern.ch/record/2868988 |