Measurement of the branching fraction of B+ → τ+ντ decays with the semileptonic tagging method and the full Belle data sample

Belle Collaboration

Research output: Contribution to conferencePaperpeer-review

Abstract

We report a measurement of the branching fraction of B+ → τ+ντ decays using a data sample of 772 × 106BB pairs, collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e collider. We reconstruct the accompanying B meson in a semileptonic decay and detect the B+ → τ+ντ candidate in the recoiling event. We obtain a branching fraction of B(B+ → τ+ντ) = [1.25 ± 0.28(stat.) ± 0.27(syst.)] × 10−4. This result is in good agreement with previous measurements and the expectation from calculations based on the Standard Model.

Original languageEnglish
StatePublished - 2014
Event8th International Workshop on the CKM Unitarity Triangle, CKM 2014 - Vienna, Austria
Duration: 8 Sep 201412 Sep 2014

Conference

Conference8th International Workshop on the CKM Unitarity Triangle, CKM 2014
Country/TerritoryAustria
CityVienna
Period8/09/1412/09/14

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