Light-by-Light Hadronic Corrections to the Muon G-2 Problem Within the Nonlocal Chiral Quark Model

被引：0
|
作者：
A. E. Dorokhov
A. E. Radzhabov
A. S. Zhevlakov
机构：
[1] Joint Institute for Nuclear Research,
[2] Bogoliubov Laboratory of Theoretical Physics,undefined
[3] National Research Tomsk State University,undefined
[4] Moscow State University,undefined
[5] Institute for Theoretical Problems of Microphysics,undefined
[6] Institute for System Dynamics and Control Theory SB RAS,undefined
来源：
Russian Physics Journal | 2017年 / 59卷
关键词：
anomalous magnetic moment; nonlocal quark model; Standard Model;
D O I：
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学科分类号：
摘要：
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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页码：1842 / 1845
页数：3
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