The first observation of the Bs0→D̄0K+K- decay is reported, together with the most precise branching fraction measurement of the mode B0→D̄0K+K-. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb-1. The data were collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction of the B0→D̄0K+K- decay is measured relative to that of the decay B0→D̄0π+π- to be B(B0→D̄0K+K-)B(B0→D̄0π+π-)=(6.9±0.4±0.3)%, where the first uncertainty is statistical and the second is systematic. The measured branching fraction of the Bs0→D̄0K+K- decay mode relative to that of the corresponding B0 decay is B(Bs0→D̄0K+K-)B(B0→D̄0K+K-)=(93.0±8.9±6.9)%. Using the known branching fraction of B0→D̄0π+π-, the values of B(B0→D̄0K+K-)=(6.1±0.4±0.3±0.3)×10-5 and B(Bs0→D̄0K+K-)=(5.7±0.5±0.4±0.5)×10-5 are obtained, where the third uncertainties arise from the branching fraction of the decay modes B0→D̄0π+π- and B0→D̄0K+K-, respectively.

Observation of the decay Bs0→D¯0K+K− / Aaij, R., Adeva, B., Adinolfi, M., Aidala, C.A., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 98:7(2018), pp. N/A-N/A. [10.1103/PhysRevD.98.072006]

Observation of the decay Bs0→D¯0K+K−

Bizzeti A.;
2018

Abstract

The first observation of the Bs0→D̄0K+K- decay is reported, together with the most precise branching fraction measurement of the mode B0→D̄0K+K-. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb-1. The data were collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction of the B0→D̄0K+K- decay is measured relative to that of the decay B0→D̄0π+π- to be B(B0→D̄0K+K-)B(B0→D̄0π+π-)=(6.9±0.4±0.3)%, where the first uncertainty is statistical and the second is systematic. The measured branching fraction of the Bs0→D̄0K+K- decay mode relative to that of the corresponding B0 decay is B(Bs0→D̄0K+K-)B(B0→D̄0K+K-)=(93.0±8.9±6.9)%. Using the known branching fraction of B0→D̄0π+π-, the values of B(B0→D̄0K+K-)=(6.1±0.4±0.3±0.3)×10-5 and B(Bs0→D̄0K+K-)=(5.7±0.5±0.4±0.5)×10-5 are obtained, where the third uncertainties arise from the branching fraction of the decay modes B0→D̄0π+π- and B0→D̄0K+K-, respectively.
2018
98
7
N/A
N/A
Observation of the decay Bs0→D¯0K+K− / Aaij, R., Adeva, B., Adinolfi, M., Aidala, C.A., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 98:7(2018), pp. N/A-N/A. [10.1103/PhysRevD.98.072006]
Aaij, R.; Adeva, B.; Adinolfi, M.; Aidala, C. A.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1209787
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