6533b833fe1ef96bd129cac5

RESEARCH PRODUCT

Rare decay η→ππγγ in chiral perturbation theory

G. KnöchleinDieter DrechselStefan Scherer

subject

PhysicsNuclear and High Energy PhysicsChiral symmetryChiral perturbation theoryPionComputer Science::Information RetrievalRadiative decayDalitz plotHigh Energy Physics::ExperimentAtomic physicsPerturbation theoryPhoton spectraNuclear theory

description

We investigate the rare radiative {eta} decay modes {eta}{r_arrow}{pi}{sup +}{pi}{sup {minus}}{gamma}{gamma} and {eta}{r_arrow}{pi}{sup 0}{pi}{sup 0}{gamma}{gamma} within the framework of chiral perturbation theory at {ital O}({ital p}{sup 4}). We present photon spectra and partial decay rates for both processes as well as a Dalitz contour plot for the charged decay. {copyright} {ital 1996 The American Physical Society.}

https://doi.org/10.1103/physrevd.53.3634