The light-by-light contribution to the muon (g-2) from lightest pseudoscalar and scalar mesons within nonlocal chiral quark model

Abstract

The light-by-light contribution from the lightest neutral pseudoscalar and scalar mesons to the anomalous magnetic moment of muon is calculated in the framework of the nonlocal SU(3)x SU(3) quark model. The model is based on chirally symmetric four-quark interaction of the Nambu-Jona-Lasinio type and Kobayashi-Maskawa-t`Hooft U_A(1) breaking six-quark interaction. Full kinematic dependence of vertices with off-shell mesons and photons in intermediate states in the light-by-light scattering amplitude is taken into account. The small positive contributions from the scalar mesons stabilize the total result with respect to change of model parameters and reduces to a_μ^{LbL,PS+S}=(6.25\pm 0.83)x10^{-10}.

11 pages, 6 figures

References in corpus (5)

• The pseudoscalar hadronic channel contribution of the light-by-light process to the muon (g-2) within the nonlocal chiral quark model
• The hadronic light by light contribution to the $(g-2{)}_{\mu }$ with holographic models of QCD
• Pseudo scalar contributions to light-by-light correction of muon g-2 in AdS/QCD
• Effects of mesonic correlations in the QCD phase transition
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• The muon g-2: retrospective and future
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