Document Type
Article
Abstract
The branching fractions of the decays B+ → ηl+νl and B+ → η0 lþνl are measured, where l is either an electron or a muon, using a data sample of 711 fb−1 containing 772 × 106 BB̅ pairs collected at the ϒ(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+ → ηlþνl)=(2.83 ± 0.55(stat.) ± 0.34(syst.) )× 10−5 and B(B+ → η0 lþνlÞ=(2.79 ± 1.29(stat.) ± 0.30 (syst.)× 10−5.
Digital Object Identifier (DOI)
Publication Info
Published in Physical Review D, Volume 106, Issue 3, 2022.
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Rights
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
APA Citation
Gebauer, U., Beleño, 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., … Zhukova, V. (2022). Measurement of the branching fractions of the . Physical Review D, 106(3). https://doi.org/10.1103/physrevd.106.032013