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Search for B0 -> Tau +/- l -/+ (l = e, mu) with a hadronic tagging method at Belle

Publikace na Matematicko-fyzikální fakulta |
2021

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

We present a search for the lepton-flavor-violating decays B0 -> τ, where l 1/4 e using the full data sample of 772 x 106 BB- pairs recorded by the Belle detector at the KEKB asymmetric-energy eþe-collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode.

The τlepton is reconstructed indirectly using the momentum of the reconstructed B. We find no evidence for B0 -> τ decays and set upper limits on their branching fractions at 90% confidence level of BB0 -> τμ τe < 1.6 x 10-5.