K-L-]PI(0)GAMMA-E(-) AND ITS RELATION TO CP AND CHIRAL TESTS()E()

Citation
Jf. Donoghue et F. Gabbiani, K-L-]PI(0)GAMMA-E(-) AND ITS RELATION TO CP AND CHIRAL TESTS()E(), Physical review. D. Particles and fields, 56(3), 1997, pp. 1605-1611
Citations number
11
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
56
Issue
3
Year of publication
1997
Pages
1605 - 1611
Database
ISI
SICI code
0556-2821(1997)56:3<1605:KAIRTC>2.0.ZU;2-X
Abstract
The decay K-L-->pi(0) gamma e(+)e(-) occurs at a higher rate than the nonradiative process K-L-->pi(0)e(+)e(-), and hence can be a backgroun d to CP violation studies using the latter reaction. It also has inter est in its own right in the context of chiral perturbation theory, thr ough its relation to the decay K-L-->pi(0) gamma gamma. The leading or der chiral loop contribution to K-L-->pi(0) gamma e(+) e(-), including the (q(3+) + q(e-))(2)/m(pi)(2) dependence, is completely calculable. We present this result and also include the higher order modification s which are required in the analysis of K-L-->pi(0) gamma gamma.