Evaluating master integrals in non-factorizable corrections to t-channel single-top production at NNLO QCD

被引：0

作者：

Wu, Zihao ^{[1
]}

Long, Ming-Ming ^{[2
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

[2] KIT, Inst Theoret Particle Phys, Karlsruhe, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 06期

关键词：

Higher-Order Perturbative Calculations; Top Quark; EXPANDING HYPERGEOMETRIC-FUNCTIONS; SYMBOLIC COMPUTATION; NUMERICAL EVALUATION; FEYNMAN-INTEGRALS; CANONICAL BASIS; EXPANSION; DIAGRAMS; EPSILON; PARTS; GINAC;

D O I：

10.1007/JHEP06(2023)144

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We studied the two-loop non-factorizable Feynman diagrams for the t-channel single-top production process in quantum chromodynamics. We present a systematic computation of master integrals of the two-loop Feynman diagrams with one internal massive propagator in which a complete uniform transcendental basis can be built. The master integrals are derived by means of canonical differential equations and uniform transcendental integrals. The results are expressed in the form of Goncharov polylogarithm functions, whose variables are the scalar products of external momenta, as well as the masses of the top quark and the W boson. We also gave a discussion on the diagrams with potential elliptic sectors.

引用

页数：39

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