# EPS HEP 2013 Stockholm

17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

## Time-dependent CP violation in B decays at Belle

20 Jul 2013, 11:45
15m
D1 (KTH Campus)

### D1

#### KTH Campus

Talk presentation Flavour Physics and Fundamental Symmetries

Luka Santelj

### Description

Using 772 million B meson pair decays recorded by the Belle detector at the KEKB collider, we study the time-dependent CP violation in the penguin transitions $b \to s q \bar{q}$, specifically in $B^0 \to \eta' K^0$. The $K^0$ mesons are reconstructed by either $K^0_S$ and $K^0_L$ and the possible deviation of the CP-violating parameter $\sin2\phi_1^{\rm eff}$ from the value found in the tree-dominated decay modes $b \to c \bar{c} s$ is discussed.

### Primary author

Prof. Youngjoon Kwon (Yonsei University)

 Slides