A search for Bs0 → τ±µ∓ and B0 → τ±µ∓ decays is performed using data corresponding to an integrated luminosity of 3 fb−1 of proton-proton collisions, recorded with the LHCb detector in 2011 and 2012. For this search, the τ lepton is reconstructed in the τ− → π−π+π−ντ channel. No significant signal is observed. Assuming no contribution from B0 → τ±µ∓ decays, an upper limit is set on the Bs0 → τ±µ∓ branching fraction of B (Bs0 → τ±µ∓) < 4.2 × 10−5 at 95% confidence level. If instead no contribution from Bs0 → τ±µ∓ decays is assumed, a limit of B (B0 → τ±µ∓) < 1.4 × 10−5 is obtained at 95% confidence level. These are the first limit on B (Bs0 → τ±µ∓) and the world’s best limit on B (B0 → τ±µ∓).
|Original language||English (US)|
|State||Published - May 16 2019|
ASJC Scopus subject areas