First observation and study of the K-+/- -> pi(+/-)pi(0)e(+)e(-) decay

Batley, JR; Kalmus, G; Lazzeroni, C; Munday, DJ; Slater, MW; Wotton, SA; Arcidiacono, R; Bocquet, G; Cabibbo, N; Ceccucci, A; Cundy, D; Falaleev, V; Fidecaro, M; Gatignon, L; Gonidec, A; Kubischta, W; Maier, A; Norton, A; Patel, M; Peters, A; Balev,

Misheva, M (reprint author), Joint Inst Nucl Res, Dubna 141980, MO, Russia.; Bloch-Devaux, B (reprint author), CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France.

PHYSICS LETTERS B, 2019; 788 (): 552

Abstract

The NA48/2 experiment at CERN reports the first observation of the K-+/- -> pi(+/-)pi(0)e(+)e(-) decay from an exposure of 1.7 x 10(11) charged kao......

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