Aspects of radiative K^+_e3 decays

Details Aspects of radiative K^+_e3 decays Aspects of radiative K^+_e3 decays

2006-11-29

arxiv.org/abs/hep-ph/0611366v1

Eur.Phys.J.C50:557-571,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 6 figures

Scientific paper

10.1140/epjc/s10052-007-0215-9

We re-investigate the radiative charged kaon decay K+- --> pi0 e+- nu_e gamma in chiral perturbation theory, merging the chiral expansion with Low's theorem. We thoroughly analyze the precision of the predicted branching ratio relative to the non-radiative decay channel. Structure dependent terms and their impact on differential decay distributions are investigated in detail, and the possibility to see effects of the chiral anomaly in this decay channel is emphasized.

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