Infrared facets of the three-gluon vertex

被引：31

作者：

Aguilar, A. C. ^{[1
]}

De Soto, F. ^{[2
]}

Ferreira, M. N. ^{[1
]}

Papavassiliou, J. ^{[3
,4
,5
]}

Rodriguez-Quintero, J. ^{[6
]}

机构：

[1] Univ Estadual Campinas, Inst Phys Gleb Wataghin, UNICAMP, BR-13083859 Campinas, SP, Brazil

[2] Univ Pablo de Olavide, Dept Sistemas Fis Quim & Nat, Seville 41013, Spain

[3] Univ Valencia, Dept Theoret Phys, E-46100 Valencia, Spain

[4] Univ Valencia, IFIC, E-46100 Valencia, Spain

[5] CSIC, E-46100 Valencia, Spain

[6] Univ Huelva, Fac Ciencias Experimentales, Ctr Estudios Avanzados Fis Mat & Comp, Dept Ciencias Integradas, Huelva 21071, Spain

来源：

PHYSICS LETTERS B | 2021年 / 818卷

基金：

巴西圣保罗研究基金会;

关键词：

QCD; Three-gluon vertex; Lattice QCD; Schwinger-Dyson equations; BACKGROUND FIELD METHOD; DYSON-SCHWINGER; GLUON MASS; GAUGE; QCD; BEHAVIOR;

D O I：

10.1016/j.physletb.2021.136352

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present novel lattice results for the form factors of the quenched three-gluon vertex of QCD, in two special kinematic configurations that depend on a single momentum scale. We consider three form factors, two associated with a classical tensor structure and one without tree-level counterpart, exhibiting markedly different infrared behaviors. Specifically, while the former display the typical suppression driven by a negative logarithmic singularity at the origin, the latter saturates at a small negative constant. These exceptional features are analyzed within the Schwinger-Dyson framework, with the aid of special relations obtained from the Slavnov-Taylor identities of the theory. The emerging picture of the underlying dynamics is thoroughly corroborated by the lattice results, both qualitatively as well as quantitatively. (C) 2021 The Author(s). Published by Elsevier B.V.

引用

页数：7

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