Journal
PHYSICS LETTERS B
Volume 640, Issue 5-6, Pages 252-259Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2006.08.008
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The three-loop form factors in massless QCD can be expressed as a linear combination of master integrals. Besides a number of master integrals which factorise into products of one-loop and two-loop integrals, one finds 16 genuine three-loop integrals. Of these, six have the form of a bubble insertion inside a one-loop or two-loop vertex integral. We compute all master integrals with these insertion topologies. (c) 2006 Elsevier B.V. All rights reserved.
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