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.

arXiv comment16 pages, 6 figures

References in corpus (12)

• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Roy-Steiner equations for gamma gamma -> pi pi
• MO analysis of the high statistics Belle results on $\gamma \gamma \to {\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0$ with chiral constraints
• Unified dispersive approach to real and virtual photon-photon scattering at low energy
• Dispersion relations for ${\gamma }^{\ast }{\gamma }^{\ast }\to \pi \pi$: helicity amplitudes, subtractions, and anomalous thresholds
• Dispersive analysis of the $S$-, $P$-, $D$-, and $F$-wave $\pi \pi$ amplitudes
• Sector of the $2^{++}$ mesons: observation of the tensor glueball
• On nature of the scalar-isoscalar mesons in the uniformizing-variable method based on analyticity and unitarity
• Masses and widths of scalar-isoscalar multi-channel resonances from data analysis
• Can parameters of f_0-mesons be determined correctly analyzing only pion-pion scattering?
• Parameters of scalar resonances from the combined analysis of data on processes $\pi \pi \to \pi \pi ,K\bar{K},\eta \eta$ and $J/\psi$ decays
• Effect of the $K\overline{K}$ and $\eta \eta$ channels and interference phenomena in the two-pion and $K\overline{K}$ transitions of charmonia and bottomonia