Aspects of radiative K+ e3 decays

2006/11/29 by Bastian Kubis, Eike H. Müller, J. Gasser +3
Chemistry · Physics and Astronomy · #Anomaly (physics) #Black Holes and Theoretical Physics #Branching (polymer chemistry) #Branching fraction #Channel (broadcasting) #Chemistry #Chiral perturbation theory #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Radiative transfer #hep-ex #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-007-0215-9

published as Eur.Phys.J.C50:557-571,2007 · 15 pages, 6 figures

arxiv created 2006/11/29 · openalex publication_date 2007/02/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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.

Citations

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