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Experimental study of the matrix element in the K+→π+π0π0 decay

par Aubert, B.;Heusse, P.;Pascaud, Christian;Vialle, Jean Pierre;Bertrand, Daniel ;Vilain, P. ;Brisson, Violette;Petiau, P.
Référence Nuovo cimento. A., 12, 2, page (509-521)
Publication Publié, 1972-11

Article révisé par les pairs

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Résumé :

Two independent analyses of the decay mode K+→π+π0π0 (τ′ mode) are presented; the first one only concerns the π+ meson energy spectrum, while the second one is based on τ′ decays for which the kinematics is completely determined. A linear description of the matrix element M=1+a(M K/M π 2 )(2 T +-T max + ) is found to be satisfactory. The value found for a is -0.32±0.02. © 1972 Società Italiana di Fisica.