We measure the branching fraction of the decay B-→D0ρ(770)- using data collected with the Belle II detector. The data contain 387 million BB¯ pairs produced in e+e- collisions at the ϒ(4S) resonance. We reconstruct 8360±180 decays from an analysis of the distributions of the B- energy and the ρ(770)- helicity angle. We determine the branching fraction to be (0.939±0.021(stat)±0.050(syst))%, in agreement with previous results. Our measurement improves the relative precision of the world average by more than a factor of two.

Ii Collaboration, B., Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., et al. (2024). Measurement of the branching fraction of the decay B− → D0ρ(770) − at Belle II. PHYSICAL REVIEW D, 109(11), L111103-1-L111103-8 [10.1103/PhysRevD.109.L111103].

Measurement of the branching fraction of the decay B− → D0ρ(770) − at Belle II

A. Di Canto;
2024

Abstract

We measure the branching fraction of the decay B-→D0ρ(770)- using data collected with the Belle II detector. The data contain 387 million BB¯ pairs produced in e+e- collisions at the ϒ(4S) resonance. We reconstruct 8360±180 decays from an analysis of the distributions of the B- energy and the ρ(770)- helicity angle. We determine the branching fraction to be (0.939±0.021(stat)±0.050(syst))%, in agreement with previous results. Our measurement improves the relative precision of the world average by more than a factor of two.
2024
Ii Collaboration, B., Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., et al. (2024). Measurement of the branching fraction of the decay B− → D0ρ(770) − at Belle II. PHYSICAL REVIEW D, 109(11), L111103-1-L111103-8 [10.1103/PhysRevD.109.L111103].
Ii Collaboration, Belle; Adachi, I.; Aggarwal, L.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh Ky, N.; Asner, D. M.; Atmacan, H.; Aushev, V.; Aversano, M...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1085412
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