https://doi.org/10.1103/PhysRevD.106.032013

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Document Type

Article

Abstract

The branching fractions of the decays B+ηl+νl and B+ηl+νl 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+η ℓ + ν ℓ)=(2.83 ± 0.55 (stat.) ± 0.34(syst.)) x 10-5 and B(B+→η′ℓ+νℓ)=(2.79 ±1.29(stat.) ± 0.30(syst.))×10−5.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevD.106.032013

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

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