The branching fractions of the decays B+→ηâ "+νâ "and B+→η′â "+νâ "are measured, where â "is either an electron or a muon, using a data sample of 711 fb-1 containing 772×106BB¯ pairs collected at the I (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e-collider. To reduce the dependence of the result on the form factor model, the measurement is performed over the entire q2 range. The resulting branching fractions are B(B+→ηâ "+νâ ")=(2.83±0.55(stat.)±0.34(syst.))×10-5 and B(B+→η′â "+νâ ")=(2.79±1.29(stat.)±0.30(syst.))×10-5.

Measurement of the branching fractions of the B+ →η l ν and B+ →η′ l ν decays with signal-side only reconstruction in the full q2 range / Gebauer, U., Beleno, C., Frey, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D.M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 106:3(2022). [10.1103/PhysRevD.106.032013]

Measurement of the branching fractions of the B+ →η l ν and B+ →η′ l ν decays with signal-side only reconstruction in the full q2 range

Campajola M.;De Nardo G.;Di Capua F.;Merola M.;Russo G.;
2022

Abstract

The branching fractions of the decays B+→ηâ "+νâ "and B+→η′â "+νâ "are measured, where â "is either an electron or a muon, using a data sample of 711 fb-1 containing 772×106BB¯ pairs collected at the I (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e-collider. To reduce the dependence of the result on the form factor model, the measurement is performed over the entire q2 range. The resulting branching fractions are B(B+→ηâ "+νâ ")=(2.83±0.55(stat.)±0.34(syst.))×10-5 and B(B+→η′â "+νâ ")=(2.79±1.29(stat.)±0.30(syst.))×10-5.
2022
Measurement of the branching fractions of the B+ →η l ν and B+ →η′ l ν decays with signal-side only reconstruction in the full q2 range / Gebauer, U., Beleno, C., Frey, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D.M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 106:3(2022). [10.1103/PhysRevD.106.032013]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/938557
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