The rare decay $η\toππγγ$ in chiral perturbation theory

Details The rare decay $η\toππγγ$ in chiral perturbation theory The rare decay $η\toππγγ$ in chiral perturbation theory

1996-01-12

arxiv.org/abs/hep-ph/9601252v1

Phys.Rev. D53 (1996) 3634-3642

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, RevTex, 10 figures, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.53.3634

We investigate the rare radiative eta decay modes
$\eta\to\pi^+\pi^-\gamma\gamma$ and $\eta\to\pi^0\pi^0\gamma\gamma$ within the
framework of chiral perturbation theory at $O(p^4)$. We present photon spectra
and partial decay rates for both processes as well as a Dalitz contour plot for
the charged decay.

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