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arXiv · 0902.3519

Quark and gluon form factors to three loops

P. A. Baikov·K. G. Chetyrkin·A. V. Smirnov·V. A. Smirnov·M. Steinhauser
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Abstract

We compute the form factors of the photon-quark-anti-quark vertex and the effective vertex of a Higgs boson and two gluons to three-loop order within massless perturbative Quantum Chromodynamics. These results provide building blocks for many third-order cross sections. Furthermore, this is the first calculation of complete three-loop vertex corrections.

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P. A. Baikov, K. G. Chetyrkin, A. V. Smirnov, V. A. Smirnov, M. Steinhauser. 2009-02-20. Quark and gluon form factors to three loops. https://doi.org/10.1103/physrevlett.102.212002

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