Light-by-light contribution to the (g-2)mu of muon from pseudoscalar channel in the nonlocal SU(3) x SU(3) quark modelстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The light-by-light contribution from the lightest neutral pseudoscalar mesons to the anomalous magnetic moment of muon is calculated in the framework nonlocal SU(3)×SU(3)SU(3)×SU(3) quark model. The model is based on four-quark interaction of the Nambu-Jona-Lasinio type and t‘Hooft six-quark interaction. Full kinematic dependencies of vertices with off-shell mesons in the light-by-light scattering amplitude is taken into account. As a result of that dependence the pseudoscalar contribution View the MathML sourceaμPS,LbL=(5.85±0.87)⋅10−10 is smaller then most of previous estimates. The comparison with the results of other models is performed.