Low-energy photon-photon fusion into three pions in Generalized Chiral Perturbation Theory

Details Low-energy photon-photon fusion into three pions in Generalized Chiral Perturbation Theory Low-energy photon-photon fusion into three pions in Generalized Chiral Perturbation Theory

1999-04-26

arxiv.org/abs/hep-ph/9904452v1

Phys.Rev. D60 (1999) 094003

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages, 5 postscript figures

Scientific paper

10.1103/PhysRevD.60.094003

The processes $\gamma\gamma\to\pi^0\pi^0\pi^0$ and $\gamma\gamma\to \pi^+ \pi^- \pi^0$ are considered in Generalized Chiral Perturbation theory, in view of their potential sensitivity to the mechanism of spontaneous breaking of chiral symmetry and to various counterterms. The amplitudes are computed up to order ${\cal O}(p^6)$. The event production rates are estimated for the Daphne $\phi$-Factory and for a future $\tau$-Charm Factory.

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