NLO CHPT corrections to the transverse muon polarization in $K_{l2\gamma }$ decay

Abstract

The calculation of the transverse muon polarization in $K^{+}\to {\mu }^{+}\nu \gamma$ decay due to the final state interaction up to $O(p^6)$ CHPT level has been carried out. It is shown that $O(p^6)$ corrections to the observable is much less than $O(p^4)$ contribution.

9 pages, 5 figures