Faculty and Student Publications
Document Type
Article
Publication Date
8-1-2022
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.
Relational Format
journal article
Recommended 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., … Belle Collaboration. (2022). Measurement of the branching fractions of the B + → η ℓ + ν ℓ and B + → η ′ ℓ + ν ℓ decays with signal-side only reconstruction in the full q 2 range. Physical Review D, 106(3), 032013. https://doi.org/10.1103/PhysRevD.106.032013
DOI
10.1103/PhysRevD.106.032013
Accessibility Status
Searchable text