The decay φ-> f_0(980) γand the process e^+e^- -> φ f_0(980)

Details The decay φ-> f_0(980) γand the process e^+e^- -> φ f_0(980) The decay φ-> f_0(980) γand the process e^+e^- -> φ f_0(980)

2007-12-03

arxiv.org/abs/0712.0304v2

Phys.Rev.D77:054008,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures, some errors in formulae are corrected and a few references to new papers added

Scientific paper

10.1103/PhysRevD.77.054008

The decay \phi -> f_0(980) \gamma and process e^+e^- -> \phi f_0(980) are considered within the local Nambu-Jona-Lasinio model. In the amplitudes of these processes contributions of s-quark and kaon loops are taken into account. The kaon loop gives a dominant contribution. Our estimation for the decay width of \phi -> f_0 \gamma is in satisfactory agreement with recent experimental data. This allows us to make some predictions for cross sections of the process e^+e^- -> \gamma^* -> \phi f_0 which can be tested in the C-\tau factory. The total and differential cross sections of this process are calculated and presented in the figures.

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