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arXiv · hep-ph/0603241

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

Gino Isidori·Luciano Maiani·Maria Nicolaci·Simone Pacetti
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Abstract

We discuss the general decomposition and possible general parameterizations of the processes $e^+ e^- \to γ^* \to P_1 P_2 γ$, where $P_1 P_2=π^0 π^0$, $π^0η$, or $π^+π^-$, for $\sqrt{s}\approx M_Φ$. 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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Gino Isidori, Luciano Maiani, Maria Nicolaci, Simone Pacetti. 2006-03-29. The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis. https://doi.org/10.1088/1126-6708%2F2006%2F05%2F049

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