About one long-range contribution to K+ -> pi+ l+ l- decays
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
We investigate the mechanism of K+ -> pi+ l+ l- (l= e, mu) decays in which a virtual photon is emitted either from the incoming K+ or the outgoing pi+. We point out some inconsistencies with and between two previous calculations, discuss the possible experimental inputs, and estimate the branching fractions. This mechanism alone fails to explain the existing experimental data by more than one order-of-magnitude. But it may show itself by its interference with the leading long-range mechanism dominated by the a_1^+ and rho^0 mesons.
Keywords
Cite
@article{arxiv.hep-ph/9904265,
title = {About one long-range contribution to K+ -> pi+ l+ l- decays},
author = {Peter Lichard},
journal= {arXiv preprint arXiv:hep-ph/9904265},
year = {2009}
}
Comments
12 pages, RevTeX, epsf.sty, 2 embedded figures