Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-41363
Gehrmann, T; Glover, E W N; Huber, T; Ikizlerli, N; Studerus, C (2010). Calculation of the quark and gluon form factors to three loops in QCD. Journal of High Energy Physics, (6):94.
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We describe the calculation of the three-loop QCD corrections to quark and gluon form factors. The relevant three-loop Feynman diagrams are evaluated and the resulting three-loop Feynman integrals are reduced to a small set of known master integrals by using integration-by-parts relations. Our calculation confirms the recent results by Baikov et al. for the three-loop form factors. In addition, we derive the subleading mathcalleft( right) terms for the fermion-loop type contributions to the three-loop form factors which are required for the extraction of the fermionic contributions to the four-loop quark and gluon collinear anomalous dimensions. The finite parts of the form factors are used to determine the hard matching coefficients for the Drell-Yan process and inclusive Higgs-production in soft-collinear effective theory.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Physics Institute|
|Deposited On:||04 Jan 2011 15:41|
|Last Modified:||05 Jul 2014 15:02|
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