Volume 291 - 9th International Workshop on the CKM Unitarity Triangle (CKM2016) - WG3 Parallel
Lepton universality, flavour and number violation in $B$ and $\tau$ decays at LHCb
P. Alvarez-Cartelle* on behalf of the LHCb collaboration
*corresponding author
Full text: pdf
Pre-published on: June 05, 2017
Published on: June 13, 2017
Abstract
The LHCb experiment has explored lepton universality violation in $b \to c \ell^- \overline{\nu}_{\ell}$ and $b \to s \ell^+ \ell^-$ transitions through the measurement of the ratios $R(D^*)$ and $R_K$. These ratios are found to be compatible with the Standard Model expectation at the level of 2.1$\sigma$ and 2.6$\sigma$, respectively. Additionally, searches for lepton flavour violation in $B$, $D$ and $\tau$ decays have been performed. No signal for such decays is found, and upper limits on their branching fractions are set.
DOI: https://doi.org/10.22323/1.291.0065
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