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Impact of leptonic $$\tau $$ τ decays on the distribution of $$B\rightarrow P\mu \bar{\nu }$$ B → P μ ν ¯ decays

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Bordone Marzia, Isidori Gino, Dyk Danny van,
Project Rare decays of B-mesons and the physics of the early Universe
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Original article (peer-reviewed)

Journal The European Physical Journal C
Volume (Issue) 76(7)
Page(s) 360
Title of proceedings The European Physical Journal C
DOI 10.1140/epjc/s10052-016-4202-x

Open Access

Type of Open Access Website


We calculate the fully-differential rate of the decays B→Pτ(→μν¯ν)ν¯B→Pτ(→μν¯ν)ν¯ where P=D,πP=D,π , background to the semimuonic decays B→Pμν¯B→Pμν¯ . The decays with a 3ν3ν final state can have a sizable impact on the experimental analyses of the ratios RDRD and RπRπ , depending on the event selection in the analysis. We outline a strategy which permits the extraction of RP(τ→μν¯ν)RPB(τ→μν¯ν) from the neutrino-inclusive rate. Our analytic results can also be used to test both existing and upcoming experimental analyses. We further provide Monte Carlo samples of the 5D rate of the neutrino-inclusive decays B→PμXν¯B→PμXν¯