Probing third-generation New Physics with $K\to \pi \nu \bar{\nu }$ and $B\to K^{(\ast )}\nu \bar{\nu }$

Lukas Allwicher, Marzia Bordone, Gino Isidori +2

The recent observation of the $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay by NA62 is an important milestone in precision flavor physics. Together with evidence of $B^{+}\to K^{+}\nu \bar{\nu }$ reported by Be…