Experimental study of the decay $K_L^0\to {\pi }^0\nu \bar{\nu }$

The E391a Collaboration, J. K. Ahn

The first dedicated search for the rare neutral-kaon decay $K_L^0\to {\pi }^0\nu \bar{\nu }$ has been carried out in the E391a experiment at the KEK 12-GeV proton synchrotron. The final upper li…