Summary
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 onτ′ decays for which the kinematics is completely determined. A linear description of the matrix elementM=1+a(M K/M 2π )(2T +−T +max ) is found to be satisfactory. The value found fora is −0.32±0.02.
Riassunto
Si presentano due analisi indipendenti del modo di decadimento K+→π+π0π0 (modoτ′); la prima concerne lo spettio d’energia del mesone π+, mentre la seconda è basata su decadimentiτ′ la cui cinematica è completamente determinata. Si trova che una descrizione lineare dell’elemento di matriceM=1+a(M K/M 2π )(2T +−T +max ) è soddisfacente. Il valore dia trovato è −0.32±0.02.
Реэуме
Предлагаутся два неэависимых аналиэа моды распада K+→π+π0π0 (τ′ мода). В первом случае аналиэируется толяко знергетическии спектр π+ меэона, тогда как во втором случае аналиэ основан наτ′ распадах, для которых кинематика полностяу определена. Получается, что линеиное описание для матричного злементаM=1+a(M K M 2π )(2T + −T +max ) является удовлетворителяным. Для величины а наидено эначение −0.32±0.02.
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Aubert, B., Heusse, P., Pascaud, C. et al. Experimental study of the matrix element in the K+→π+π0π0 decay. Nuov Cim A 12, 509–521 (1972). https://doi.org/10.1007/BF02729561
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DOI: https://doi.org/10.1007/BF02729561