期刊
EUROPEAN PHYSICAL JOURNAL C
卷 71, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-011-1702-6
关键词
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资金
- program Development of Scientific Potential in Higher Schools [2.2.1.1/1483, 2.1.1/1539]
- Federal Target Program Research and Training Specialists in Innovative Russia [02. 740.11.5154]
- JINR-Belarus [N183]
- RBFR [09-02-00749, 10-02-00368, 11-02-00112]
The light-by-light contribution to the anomalous magnetic moment of muon (g - 2)(mu) from the hadronic exchanges in the neutral pseudoscalar meson channel is calculated in the nonlocal chiral quark model. The full kinematic dependence of the meson two-photon vertices from the virtualities of the mesons and photons is taken into account. It is demonstrated that the effect of the full kinematic dependence in the meson-photon vertices is to reduce the contribution of pseudoscalar exchanges comparing with the most of previous estimates and the result is a(mu)(PS,LbL) = (5.85 +/- 0.87) . 10(-10). The status of various phenomenological and QCD short-distance constraints is discussed and the comparison with the predictions of other models is performed.
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