The first observations of B0 → anti-D*(2007)0 K+ π− and B0s → anti-D*(2007)0 K− π+ decays are presented, and their branching fractions relative to that of the B0 → anti-D*(2007)0 π+ π− decay are reported. These modes can potentially be used to investigate the spectroscopy of charm and charm-strange resonances and to determine the angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle. It is also important to understand them as a source of potential background in determinations of γ from B+ → D K+ and B0 → D K+ π− decays. The analysis is based on a sample corresponding to an integrated luminosity of 5.4 fb^−1 of proton-proton collision data at 13 TeV center-of-mass energy recorded with the LHCb detector. The anti-D*(2007)0 mesons are fully reconstructed in the anti-D0 π0 and anti-D0 γ channels with the anti-D0 → K+ π− decay. A novel weighting method is used to subtract background while simultaneously applying an event-by-event efficiency correction to account for resonant structures in the decays.

Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2022). Observation of the B0 → anti-D*0 K+ π− and B0s → anti-D*0 K− π+ Decays. PHYSICAL REVIEW D, 105(7), 1-22 [10.1103/PhysRevD.105.072005].

Observation of the B0 → anti-D*0 K+ π− and B0s → anti-D*0 K− π+ Decays

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Villa, A.;Zucchelli, S.;
2022

Abstract

The first observations of B0 → anti-D*(2007)0 K+ π− and B0s → anti-D*(2007)0 K− π+ decays are presented, and their branching fractions relative to that of the B0 → anti-D*(2007)0 π+ π− decay are reported. These modes can potentially be used to investigate the spectroscopy of charm and charm-strange resonances and to determine the angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle. It is also important to understand them as a source of potential background in determinations of γ from B+ → D K+ and B0 → D K+ π− decays. The analysis is based on a sample corresponding to an integrated luminosity of 5.4 fb^−1 of proton-proton collision data at 13 TeV center-of-mass energy recorded with the LHCb detector. The anti-D*(2007)0 mesons are fully reconstructed in the anti-D0 π0 and anti-D0 γ channels with the anti-D0 → K+ π− decay. A novel weighting method is used to subtract background while simultaneously applying an event-by-event efficiency correction to account for resonant structures in the decays.
2022
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2022). Observation of the B0 → anti-D*0 K+ π− and B0s → anti-D*0 K− π+ Decays. PHYSICAL REVIEW D, 105(7), 1-22 [10.1103/PhysRevD.105.072005].
Aaij, R.; Abdelmotteleb, A.S.W.; Abellán Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C.A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/900400
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