• Open Access

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

U. Gebauer et al. (Belle Collaboration)
Phys. Rev. D 106, 032013 – Published 17 August 2022
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Abstract

The branching fractions of the decays B+η+ν and B+η+ν are measured, where is either an electron or a muon, using a data sample of 711fb1 containing 772×106BB¯ 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+ν)=(2.83±0.55(stat.)±0.34(syst.))×105 and B(B+η+ν)=(2.79±1.29(stat.)±0.30(syst.))×105.

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  • Received 28 April 2021
  • Accepted 4 August 2022

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

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.

Published by the American Physical Society

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Vol. 106, Iss. 3 — 1 August 2022

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