New physics implications of recent search for $K_L\to {\pi }^0\nu \bar{\nu }$ at KOTO

Teppei Kitahara, Takemichi Okui, Gilad Perez +2

The KOTO experiment recently reported four candidate events in the signal region of $K_L\to {\pi }^0\nu \bar{\nu }$ search, where the standard model only expects $0.10\pm 0.02$ events. If conf…