Revisiting models that enhance $B^{+}\to K^{+}\nu \bar{\nu }$ in light of the new Belle II measurement

Xiao-Gang He, Xiao-Dong Ma, German Valencia

Belle II has recently reported the new measurement $\mathcal{B}(B^{+}\to K^{+}\nu \bar{\nu })=(2.3\pm 0.7)\times 10^{-5}$ \cite{Belle-II:2023esi} which is two times larger than their previous resu…