Measurement of the ratio of Bc+ branching fractions to J /ψπ+ and J /ψμ+νμ final states

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Abstract

The first measurement that relates semileptonic and hadronic decay rates of the Bc+ meson is performed using proton-proton collision data corresponding to 1.0fb-1 of integrated luminosity collected with the LHCb detector. The measured value of the ratio of branching fractions, B(Bc+→J/ψπ+)/ B(Bc+→J/ψμ+νμ)=0.0469±0.0028(stat)±0.0046(syst), is at the lower end of available theoretical predictions. © 2014 CERN, for the LHCb Collaboration.

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Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., … Zvyagin, A. (2014). Measurement of the ratio of Bc+ branching fractions to J /ψπ+ and J /ψμ+νμ final states. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(3). https://doi.org/10.1103/PhysRevD.90.032009

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