Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb^−1, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the Bc+ → D0 K+ decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B+ → anti-D0 π+ decays, a measurement of the branching fraction multiplied by the production rates for Bc+ relative to B+ mesons in the LHCb acceptance is obtained, R_{D0 K} = (f_c/f_u) × B(Bc+ → D0 K+) = (9.3{−2.5}{+2.8} ± 0.6) × 10^−7, where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first Bc+ decay of this nature to be observed.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of Bc+ → D0 K+ Decays. PHYSICAL REVIEW LETTERS, 118(11), 1-9 [10.1103/PhysRevLett.118.111803].

Observation of Bc+ → D0 K+ Decays

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb^−1, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the Bc+ → D0 K+ decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B+ → anti-D0 π+ decays, a measurement of the branching fraction multiplied by the production rates for Bc+ relative to B+ mesons in the LHCb acceptance is obtained, R_{D0 K} = (f_c/f_u) × B(Bc+ → D0 K+) = (9.3{−2.5}{+2.8} ± 0.6) × 10^−7, where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first Bc+ decay of this nature to be observed.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of Bc+ → D0 K+ Decays. PHYSICAL REVIEW LETTERS, 118(11), 1-9 [10.1103/PhysRevLett.118.111803].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/584411
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