Journal
NUCLEAR PHYSICS B
Volume 706, Issue 1-2, Pages 245-324Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2004.10.059
Keywords
Feynman diagrams; multi-loop calculations; vertex diagrams; heavy quarks
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We present closed analytic expressions of the electromagnetic vertex form factors for heavy quarks at the two-loop level in QCD for arbitrary momentum transfer. The calculation is carried out in dimensional regularization. The electric and magnetic form factors are expressed in terms of 1-dimensional harmonic polylogarithms of maximum weight 4. (C) 2004 Elsevier B.V. All rights reserved.
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