# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Searches for $B^0 \to \eta \pi^0$ and $B_s \to K^0 K^0$ at Belle

Jul 23, 2015, 12:45 PM
15m
HS21

### HS21

talk Flavour Physics and Fundamental Symmetries

### Speaker

MING-CHUAN CHANG (FU JEN CATHOLIC UNIVERSITY)

### Description

Charmless decays of $B$ and $B_s$ mesons provide nice testing ground for the Standard Model (SM) and excellent probes for physics beyond the SM. The Belle experiment has produced many results in this subject by analyzing the high-statistics event sample of $B$ and $B_s$ meson decays. We present the searches for the two-body charmless rare decays $B^0\to \eta \pi^0$ and $B_s \to K^0 K^0$ using the data samples of $694 {\rm fb}^{-1}$ and $121.4 {\rm fb}^{-1}$ collected at the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances, respectively, with the Belle detector at the KEKB $e^+ e^-$ asymmetric-energy collider.