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A study of the K + → π 0 e + νγ decay

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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  • The NA62 Collaboration
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Article number40
<mark>Journal publication date</mark>7/09/2023
<mark>Journal</mark>Journal of High Energy Physics
Issue number9
Volume2023
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A sample of 1.3 × 105K+ → π0e+νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017–2018. Branching fraction measurements are obtained at percent relative precision in three restricted kinematic regions, improving on existing results by a factor larger than two. An asymmetry, possibly related to T-violation, is investigated with no evidence observed within the achieved precision.