Detailed study of the ${\mathrm{K}}^{\pm }\to {\pi }^0{\pi }^0{\mathrm{e}}^{\pm }\nu$ (${\mathrm{K}}_{\mathrm{e}4}^{00}$) decay properties

2 Collaboration

A sample of 65210 ${\mathrm{K}}^{\pm }\to {\pi }^0{\pi }^0{\mathrm{e}}^{\pm }\nu$ (${\mathrm{K}}_{\mathrm{e}4}^{00}$) decay candidates with $1\%$ background contamination has been coll…