Coupled-channel analysis of the process $\gamma \gamma \to {\pi }^0{\pi }^0$

Abstract

We study the process $\gamma \gamma \to {\pi }^0{\pi }^0$ involving the principle mechanisms, the structure of its cross section and the role of individual isoscalar-tensor resonances in the saturation of its energy spectrum.

16 pages, 6 figures

References in corpus (2)

• MO analysis of the high statistics Belle results on $\gamma \gamma \to {\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0$ with chiral constraints
• Dispersion relations for ${\gamma }^{\ast }{\gamma }^{\ast }\to \pi \pi$: helicity amplitudes, subtractions, and anomalous thresholds