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


Aaij R., Adeva B., Adinolfi M., Affolder A., Ajaltouni Z., Akar S., ...Daha Fazla

Physical Review D - Particles, Fields, Gravitation and Cosmology, cilt.90, sa.3, 2014 (SCI-Expanded) identifier identifier

Özet

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.