One-loop QCD amplitudes in the Feynman-diagram gauge

被引：0

作者：

Hagiwara, Kaoru ^{[1
]}

Mawatari, Kentarou ^{[2
,3
]}

Yamada, Youichi ^{[4
]}

Zheng, Ya-Juan ^{[2
]}

机构：

[1] KEK Theory Ctr & Sokendai, Tsukuba, Ibaraki 3050801, Japan

[2] Iwate Univ, Fac Educ, Morioka, Iwate 0208550, Japan

[3] Iwate Univ, Grad Sch Arts & Sci, Grad Sch Sci & Engn, Morioka, Iwate 0208550, Japan

[4] Tohoku Univ, Dept Phys, Sendai 9808578, Japan

来源：

PHYSICAL REVIEW D | 2024年 / 110卷 / 05期

关键词：

BACKGROUND-FIELD GAUGE; RENORMALIZATION;

D O I：

10.1103/PhysRevD.110.056021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Scattering amplitudes for the massless QCD process, qq -> q'q', are calculated in the one-loop order in the Feynman-Diagram (FD) gauge, where gluons are quantized on the light cone with opposite direction of the three-momenta. We find non-decoupling of the Faddeev-Popov ghosts and nonconventional UV singularities in dimensional regularization. The known QCD amplitudes with asymptotic freedom are reproduced only after summing propagator and vertex corrections. By quantizing gluons in the Feynman gauge on the FD gauge background, we obtain the one-loop improved FD gauge amplitudes.

引用

页数：16

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