Light-by-light hadronic corrections to the muon G-2 problem within the nonlocal chiral quark model

Results of calculation of the light-by-light contribution from the lightest neutral pseudoscalar and scalar mesons and the dynamical quark loop to the muon anomalous magnetic moment are discussed in the framework of the nonlocal SU(3) × SU(3) chiral quark model. The model is based on four-quark inte...

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Bibliographic Details
Published in:Russian physics journal Vol. 59, № 11. P. 1842-1845
Main Author: Dorokhov, Aleksandr E.
Other Authors: Radzhabov, A. E., Zhevlakov, Alexey S.
Format: Article
Language:English
Subjects:
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000578574
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245 1 0 |a Light-by-light hadronic corrections to the muon G-2 problem within the nonlocal chiral quark model  |c A. E. Dorokhov, A. E. Radzhabov, A. S. Zhevlakov 
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520 3 |a Results of calculation of the light-by-light contribution from the lightest neutral pseudoscalar and scalar mesons and the dynamical quark loop to the muon anomalous magnetic moment are discussed in the framework of the nonlocal SU(3) × SU(3) chiral quark model. The model is based on four-quark interaction of the Nambu-Jona-Lasinio type and Kobayashi-Maskawa-'t Hooft six-quark interaction. The 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. All calculations are elaborated in explicitly gauge-invariant manner. These results complete calculations of all hadronic light-by-light scattering contributions to aμ in the leading order in the 1/Nc expansion. The final result does not allow the discrepancy between the experiment and the Standard Model to be explained. 
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700 1 |a Zhevlakov, Alexey S.  |9 133397 
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