Determination of the branching ratios $\Gamma (K_L\to 3{\pi }^0)/\Gamma (K_L\to {\pi }^{+}{\pi }^{-}{\pi }^0)$ and $\Gamma (K_L\to 3{\pi }^0)/\Gamma (K_L\to \pi e\nu )$

A. Kreutz, M. Holder, M. Rost +27

Improved branching ratios were measured for the $K_L\to 3{\pi }^0$ decay in a neutral beam at the CERN SPS with the NA31 detector: $Γ(K_L \to 3 π^0) / Γ(K_L \to π^+ π^- π^0) = 1.611…