Observation of the Decay $B_c^{\pm }\to J/\psi {\pi }^{\pm }$ and Measurement of the $B_c^{\pm }$ Mass

Abstract

The $B_c^{\pm }$ meson is observed through the decay $B_c^{\pm }\to J/\psi {\pi }^{\pm }$, in data corresponding to an integrated luminosity of 2.4 fb${}^{-1}$ recorded by the CDF II detector at the Fermilab Tevatron. A signal of $108\pm 15$ candidates is observed, with a significance that exceeds $8\sigma$. The mass of the $B_c^{\pm }$ meson is measured to be 6275.6 $\pm$ 2.9 (stat.) $\pm$ 2.5 (syst.) MeV/$c^2$.

References in corpus (2)

• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model

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