Search for the decays Bs0 → τ+τ and B0 → τ+τ

LHCb Collaboration

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A search for the rare decays Bs0 → τ+τ and B0 → τ+τ is performed using proton–proton collision data collected with the LHCb detector. The data sample corresponds to an integrated luminosity of 3 fb1 collected in 2011 and 2012. The τ leptons are reconstructed through the decay τ → ππ+πντ. Assuming no contribution from B0 → τ+τ decays, an upper limit is set on the branching fraction B(Bs0 → τ+τ) < 6.8×103 at 95% confidence level. If instead no contribution from Bs0 → τ+τ decays is assumed, the limit is B(B0 → τ+τ) < 2.1 × 103 at 95% confidence level. These results correspond to the first direct limit on B(Bs0 → τ+τ) and the world’s best limit on B(B0 → τ+τ).

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Mar 7 2017

ASJC Scopus subject areas

  • General

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