# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Measurements of CP violation in $B^0_{d/s}$ mixing through $B \to J/\Psi X$ decays

Jul 23, 2015, 3:00 PM
20m
HS21

### HS21

talk Flavour Physics and Fundamental Symmetries

### Speaker

Greig Cowan (University of Edinburgh (GB))

### Description

B mesons provides an ideal laboratory for measurements of CP violation and searches for CPV beyond the Standard Model. Recent measurements of the mixing phases of the $B_s$ and $B_d$ mesons, $\phi_s$ and $\sin{2 \beta}$, using decays to $J\Psi$X final states are presented. In view of future improved measurements, a good understanding of pollution from sub-leading penguin topologies in these decays is needed. Those can be probed using suppressed decays like $B_s \to J/\Psi K_S$ and $B_s \to J/\Psi K^*$. Recent results on these decay modes are presented.

### Primary author

Greig Cowan (University of Edinburgh (GB))