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 conferencePaper

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 (US)
StatePublished - 2014
Event8th International Workshop on the CKM Unitarity Triangle, CKM 2014 - Vienna, Austria
Duration: Sep 8 2014Sep 12 2014

Conference

Conference8th International Workshop on the CKM Unitarity Triangle, CKM 2014
CountryAustria
CityVienna
Period9/8/149/12/14

ASJC Scopus subject areas

  • Mathematics (miscellaneous)

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    Belle Collaboration (2014). Measurement of the branching fraction of B+ → τ+ντ decays with the semileptonic tagging method and the full Belle data sample. Paper presented at 8th International Workshop on the CKM Unitarity Triangle, CKM 2014, Vienna, Austria.