The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis

Details The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis

2006-03-29

arxiv.org/abs/hep-ph/0603241v1

JHEP0605:049,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex

Scientific paper

10.1088/1126-6708/2006/05/049

We discuss the general decomposition and possible general parameterizations of the processes $e^+ e^- \to \gamma^* \to P_1 P_2 \gamma$, where $P_1 P_2=\pi^0 \pi^0$, $\pi^0\eta$, or $\pi^+\pi^-$, for $\sqrt{s}\approx M_\Phi$. Particular attention is devoted to the amplitude where the two pseudoscalar mesons are in a $J^{CP}= 0^{++}$ state, where we propose a general parameterization which should help to shed light on the nature of light scalar mesons.

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