Two-photon annihilation into octet meson pairs: symmetry relations in the handbag approach

Abstract

We explore the implications of SU(3) flavor symmetry in the soft handbag mechanism for two-photon annihilation into pairs of pseudoscalar octet mesons. In this approach we obtain a good description of the experimental results for all measured channels at high energy, with two complex form factors adjusted to the data. We also predict the cross section for gamma gamma -> eta eta.

15 pages, 5 figures

References in corpus (3)

• High-statistics study of neutral-pion pair production in two-photon collisions
• gamma+gamma --> pi+pi, K+K : leading term QCD vs handbag model
• NLO perturbative QCD predictions for gamma gamma -> M+ M- (M=pi,K)

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• Twist-3 contributions to $\gamma \gamma \to {\pi }^{+}{\pi }^{-},K^{+}{K}^{-}$ processes in perturbative QCD approach
• Exclusive production of lepton, quark and meson pairs in peripheral ultrarelativistic heavy ion collisions
• Hard exclusive production of two pions in $\gamma \gamma$-collisions within the SCET factorization approach
• Probing moments of baryon-antibaryon generalized parton distributions at BELLE and FAIR