The muon g-2: Dyson-Schwinger status on hadronic light-by-light scattering

被引：11

作者：

Eichmann, Gernot ^{[1
]}

Fischer, Christian S. ^{[1
]}

Heupel, Walter ^{[1
]}

Williams, Richard ^{[1
]}

机构：

[1] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany

来源：

XITH CONFERENCE ON QUARK CONFINEMENT AND HADRON SPECTRUM | 2016年 / 1701卷

关键词：

Muon anomalous magnetic moment; hadronic light-by-light; Dyson-Schwinger equations; RAINBOW-LADDER; PSEUDOSCALAR; VERTEX; GAUGE; MESONS; MASS; QCD;

D O I：

10.1063/1.4938621

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We give a status report on the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment from the Dyson-Schwinger approach. We discuss novel, model-independent properties of the light-by-light amplitude: we give its covariant decomposition in view of electromagnetic gauge invariance and Bose symmetry, and we identify the relevant kinematic regions that are probed under the integral. The decomposition of the amplitude at the quark level and the importance of its various diagrams are discussed and related to model approaches.

引用

页数：13

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