# EPS-HEP2019

Jul 10 – 17, 2019
Ghent
Europe/Brussels timezone

## Charm and tau loop effects in $B^+ \to K^+ \mu^- \mu^+$

Jul 13, 2019, 9:55 AM
15m
Campus Ledeganck - Aud. 5 (Ghent)

### Campus Ledeganck - Aud. 5

#### Ghent

Parallel talk Flavour Physics and CP Violation

### Speaker

Claudia Cornella (University of Zurich )

### Description

I will present an improved parametrisation of the contribution of $\bar c c$ real intermediate states in the $B^+ \to K^+ \mu^- \mu^+$ decay,
aimed at improving the description of the dilepton spectrum and, possibly, the extraction of short-distance information from this process. Motivated by B-anomalies,
whose combined explanations calls for large NP in the $b \to s \tau^{-} \tau^{+}$ transition, I will also comment on the possibility of extracting bounds
on this contribution from the $B^+ \to K^+ \mu^- \mu^+$ dilpeton spectrum.

### Primary author

Claudia Cornella (University of Zurich )