Abstract

NA48/2 results contributing to ChPT testing are presented. A sample of 1663 events of the rare decay has been selected with a minimum e +e effective mass of 140 MeV. The measured model independent decay rate is in agreement with ChPT predictions. The branching ratio of the decay, never observed so far, has been obtained from a sample of about 5000 candidates with less than 6% background, also in agreement with ChPT predictions. In addition, a most precise measurement of the charged kaon semileptonic formfactors has been obtained from 4.4 million Ke3 and 2.3 million Kµ3 events collected in 2004.

Details

Title
Recent NA48/2 results on rare kaon decays
Author
Madigozhin, Dmitry
Section
Hadronic Final States in High PT Interactions
Publication year
2019
Publication date
2019
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
ProQuest document ID
2285614464
Copyright
© 2019. This work is licensed under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.