Branching ratio measurements of exclusive $B^{+}$ decays to charmonium with the Collider Detector at Fermilab

We report on measurements of the branching ratios of the decays $B^{+}\to {\chi }_{c1\mathrm{}}^0{\mathrm{}\left(1P\right)K}^{+}$ and $B^{+}\to J/\psi K^{+}{\pi }^{+}{\pi }^{-},$ where ${\chi }_{c1\mathrm{}}^0\mathrm{}\left(1P\right)\mathrm{}\to J/\psi \gamma$ and $J/\overrightarrow{\psi }{\mu }^{+}{\mu }^{-}$ in $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}\mathrm{TeV}.$ Using a data sample from an integrated luminosity of $110{\mathrm{pb}}^{-1}$ collected by the Collider Detector at Fermilab we measure the branching ratios to be ${BR(B}^{+}\to {\chi }_{c1\mathrm{}}^0{\mathrm{}\left(1P\right)K}^{+})=15.5\mathrm{}\pm 5.4(\mathrm{stat})\pm 1.5(\mathrm{syst})\pm 1.3(\mathrm{br})\times {10}^{-4}$ and ${BR(B}^{+}\to J/\psi K^{+}{\pi }^{+}{\pi }^{-})=6.9\mathrm{}\pm 1.8(\mathrm{stat})\pm 1.1(\mathrm{syst})\pm 0.4(\mathrm{br})\times {10}^{-4}$ where $\left(\mathrm{br}\right)$ is due to the finite precision on ${BR(B}^{+}\to J/\psi K^{+}),$ $BR\left({\chi }_{c1\mathrm{}}^0\mathrm{}\right(1P)\mathrm{}\to J/\psi \gamma )$ is used to normalize the signal yield, and $\left(\mathrm{syst}\right)$ encompasses all other systematic uncertainties.