K_L -> pi0 gamma e+ e- and its relation to CP and chiral tests

Abstract

The decay K_L -> pi0 gamma e+ e- occurs at a it higher rate than the nonradiative process K_L -> pi0 e+ e-, and hence can be a background to CP violation studies using the latter reaction. It also has an interest in its own right in the context of chiral perturbation theory, through its relation to the decay K_L -> pi0 gamma gamma. The leading order chiral loop contribution to K_L -> pi0 gamma e+ e-, including the [q(e+) + q(e-)]^2/m^2(pi) dependence, is completely calculable. We present this result and also include the higher order modifications which are required in the analysis of K_L -> pi0 gamma gamma.

Some misprints corrected, results unchanged. 12 pages, 7 eps figures. Version accepted for publication on Phys, Rev. D. LaTeX, uses epsf.sty and rotate.sty

Cited by in corpus (13)

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• Extracting short-distance physics from K_{L,S} -> pi0 e+ e- decays
• Anatomy of kaon decays and prospects for lepton flavour universality violation
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• K_L -> pi0 gamma gamma and the bound on the CP-conserving K_L -> pi0 e+e-
• Beyond the Standard Model prospects for kaon physics at future experiments
• First Observation of the decay KL -> pi0 e e gamma
• Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-
• Recent developments in rare kaon decays
• Chiral predictions for K_L -> pi0 gamma mu+ mu-
• Measurement of the Decay KL -> pi0 e+ e- gamma
• On the electron-positron energy asymmetry in K_L --> pi0 e+ e-
• $K\to \pi {\gamma }^{\ast }{\gamma }^{\ast }$ transitions at leading order and beyond