Quark and Gluon Form Factors to Three Loops

P. A. Baikov, K. G. Chetyrkin, A. V. Smirnov, V. A. Smirnov, and M. Steinhauser

Phys. Rev. Lett. 102, 212002 – Published 29 May 2009

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.

Received 17 February 2009

DOI:https://doi.org/10.1103/PhysRevLett.102.212002

Authors & Affiliations

P. A. Baikov^1,2, K. G. Chetyrkin^2,3, A. V. Smirnov^4,2, V. A. Smirnov^1,2, and M. Steinhauser²

¹Skobeltsyn Institute of Nuclear Physics of Moscow State University, 119992 Moscow, Russia
²Institut für Theoretische Teilchenphysik, Universität Karlsruhe (TH), Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany
³Institute for Nuclear Research, Russian Academy of Sciences, Moscow 117312, Russia
⁴Scientific Research Computing Center, Moscow State University, 119992 Moscow, Russia

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Vol. 102, Iss. 21 — 29 May 2009

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Physical Review Letters

Quark and Gluon Form Factors to Three Loops

P. A. Baikov, K. G. Chetyrkin, A. V. Smirnov, V. A. Smirnov, and M. Steinhauser

Phys. Rev. Lett. 102, 212002 – Published 29 May 2009

Abstract

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