Evidence for Isospin Violation and Measurement of $CP$ Asymmetries in $B\to K^{\ast }(892)\gamma$

T. Horiguchi, A. Ishikawa, H. Yamamoto +190

We report the first evidence for isospin violation in $B\to K^{\ast }\gamma$ and the first measurement of difference of $CP$ asymmetries between $B^{+}\to K^{\ast +}\gamma$ and $B^0\to K^{\ast 0}\gamma$. T…