Speaker
Maria Carolina Feliciano Faria
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
Description
We search for the $B^+ \to K^+ \tau^+ \tau^-$ decay using data collected by the LHCb experiment, reconstructing the $\tau$ leptons in $\tau^+ \to \pi^+ \pi^- \pi^+ (\pi^0) \bar{\nu}_{\tau}$.
This decay is produced in electroweak penguin loop transitions, highly suppressed in the standard model.
New models explaining the tensions observed in $b \to s l^+ l^-$ and $b \to c l \bar{\nu}$ transitions also predict enhancements of the $b \to s \tau \tau$ branching fractions of up to $\mathcal{O}(10^3)$ over the standard model prediction.
We present initial studies of the reconstruction of this decay, the analysis of potential background sources and a preliminary estimate of our sensitivity to this channel.
Authors
Aravindhan Venkateswaran
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
Fred Blanc
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
Maria Carolina Feliciano Faria
(EPFL - Ecole Polytechnique Federale Lausanne (CH))
