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NA48/2 Results on Rare Kaon Decays

A most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.4 million Ke3 and 2.3 million Kμ3 events collected in 2004. In addition, the branching ratio of the K± → π±π0e+e− decay, never observed so far, has been obtained from a sample of 4919 candidates with 4....

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Detalles Bibliográficos
Autor principal: Madigozhin, Dmitry
Lenguaje:eng
Publicado: World Scientific 2021
Materias:
Acceso en línea:https://dx.doi.org/10.1142/9789811233913_0064
http://cds.cern.ch/record/2824772
Descripción
Sumario:A most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.4 million Ke3 and 2.3 million Kμ3 events collected in 2004. In addition, the branching ratio of the K± → π±π0e+e− decay, never observed so far, has been obtained from a sample of 4919 candidates with 4.9% background contamination. The study of the kinematic space is performed, and several P, CP-violating asymmetries are evaluated.