Unitarity corrections to K+ -> pi+ gamma l+l-

Abstract

We perform a chiral one-loop calculation of the unitarity corrections to the processes K+ -> pi+ gamma l+l- up to O(E^6), taking into account pi+pi- intermediate states. Branching ratios and differential branching ratios are computed and presented to demonstrate the importance of the above corrections.

Comments: 18 pages, 13 eps figures. LaTeX, uses epsfig.sty. Version accepted for publication on Phys. Rev. D. Misprints corrected