Speaker
Mr.
Luis Pesantez
(University of Bonn)
Description
The radiative B decays proceed through a loop diagram and are sensitive to New Physics. We perform measurements of the branching fraction of $B \to X_s \gamma$, where $X_s$ is the hadronic state with strangeness. Using a semi-inclusive method in which $X_s$ is
reconstructed with 38 exclusive modes, the inclusive branching fraction in $M_{X_s} < 2.8$ GeV is measured. We also report the measurement using the recoil tag method. The Standard Model predicts null CP asymmetry ($A_{CP}$) of $B \to X_{s+d} \gamma$, where $X_{s+d}$ is the hadronic state with strange or down quark. We present a measurement of $A_{CP}$ with lepton tag. The analyses are based on the full data set of Belle containing 772 million $B \bar{B}$ pairs.
Primary author
Prof.
Youngjoon Kwon
(Yonsei University)
