A study of the $K^{+}\to {\pi }^0{e}^{+}\nu \gamma$ decay

The NA62 Collaboration

A sample of $1.3\times 10^5$ $K^{+}\to {\pi }^0{e}^{+}\nu \gamma$ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017-2018. Branching fraction mea…