THE MESON-EXCHANGE INDUCED LIGHT-BY-LIGHT CONTRIBUTION TO (g-2)μ WITHIN THE NONLOCAL CHIRAL QUARK MODEL

被引：0
|
作者：
Dorokhov, A. E. [1 ,2 ]
Radzhabov, A. E. [3 ]
Zhevlakov, A. S. [3 ]
机构：
[1] JINR, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
[2] Moscow MV Lomonosov State Univ, NN Bogoliubov Inst Theoret Problems Microworld, Moscow 119991, Russia
[3] RAS, SB, Inst Syst Dynam & Control Theory, Irkutsk 664033, Russia
来源：
LIGHT CONE CRACOW 2012: MODERN APPROACHES TO NONPERTURBATIVE GAUGE THEORIES AND THEIR APPLICATIONS | 2013年 / 6卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
MUON G-2; VA(V)OVER-TILDE CORRELATOR; PSEUDOSCALAR; SCALAR;
D O I：
10.5506/APhysPolBSupp.6.157
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The current status of the muon anomalous magnetic moment (AMM) problem is briefly presented. The corrections to the muon AMM coming from the effects of hadronic light-by-light (LbL) scattering due to light quark antiquark exchange in pseudoscalar and scalar channels are estimated within the nonlocal chiral quark model (N chi QM). Within this approach the full kinematic dependence on the photon and meson virtualities are taken into account. As a result, the meson exchange contributions to the muon AMM calculated within N chi QM are, in general, smaller than the contributions obtained within other models. The contribution from the scalar channel is positive and small, but stabilizes the combined with pseudoscalar channel result with respect to variation of the model parameters.
引用
收藏
页码：157 / +
页数：3
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