Massive three-loop form factor in the planar limit

被引：30

作者：

Henn, Johannes ^{[1
]}

Smirnov, Alexander V. ^{[2
]}

Smirnov, Vladimir A. ^{[3
,4
]}

Steinhauser, Matthias ^{[4
]}

机构：

[1] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, Staudingerweg 9, D-55099 Mainz, Germany

[2] Moscow MV Lomonosov State Univ, Ctr Res Comp, Moscow 119991, Russia

[3] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[4] Karlsruhe Inst Technol, Inst Theoret Teichenphys, Wolfgang Gaede Strass 1, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 01期

关键词：

NLO Computations; QCD Phenomenology; 2-LOOP QCD CORRECTIONS; HIGH-ENERGY; QUARK; RENORMALIZATION; IMPLEMENTATION; DECAYS;

D O I：

10.1007/JHEP01(2017)074

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 compute the three-loop QCD corrections to the massive quark-anti-quark-photon form factors F-1 and F-2 in the large-N-c limit. The analytic results are expressed in terms of Goncharov polylogarithms. This allows for a straightforward numerical evaluation. We also derive series expansions, including power suppressed terms, for three kinematic regions corresponding to small and large invariant masses of the photon momentum, and small velocities of the heavy quarks.

引用

页数：19

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