Branching ratio of rare decay $B^0(B_s)\to \gamma \nu \bar{\nu }$

Jun-Xiao Chen, Zhao-Yu Hou, Ying Li +1

The three-body decay $B^0(B_s)\to \gamma \nu \bar{\nu }$ can occur via penguin and box diagrams in the standard model (SM). These channels are useful to determine the decay constants $f_B$ ($f_{…