A study of the K+→ π0e+νγ decay.

Authors :: Cortina Gil, E.
Kleimenova, A.
Minucci, E.
Padolski, S.
Petrov, P.
Shaikhiev, A.
Volpe, R.
Numao, T.
Petrov, Y.
Velghe, B.
Wong, V. W. S.
Bryman, D.
Fu, J.
Hives, Z.
Husek, T.
Jerhot, J.
Kampf, K.
Zamkovsky, M.
De Martino, B.
Perrin-Terrin, M.
Source :: Journal of High Energy Physics; Sep2023, Vol. 2023 Issue 9, p1-18, 18p
Publication Year :: 2023
Abstract: A sample of 1.3 × 10<superscript>5</superscript>K<superscript>+</superscript> → π<superscript>0</superscript>e<superscript>+</superscript>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. [ABSTRACT FROM AUTHOR]