Process eta -> pi^0 gamma gamma in the Nambu-Jona-Lasinio model

Details Process eta -> pi^0 gamma gamma in the Nambu-Jona-Lasinio model Process eta -> pi^0 gamma gamma in the Nambu-Jona-Lasinio model

2006-10-13

arxiv.org/abs/hep-ph/0610159v1

Phys.Rev.D74:113001,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures

Scientific paper

10.1103/PhysRevD.74.113001

The decay width of the process eta -> pi^0 gamma gamma is calculated in the
framework of the Nambu-Jona-Lasinio model. The momentum dependence of quark
loops is taken into account. Three types of diagrams are considered: quark box,
scalar(a0) and vector(rho, omega) pole diagrams. The obtained estimations are
in satisfactory agreement with recent experimental data.

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