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.
Two-loop QCD corrections to the heavy quark form factors: the vector contributions / W. Bernreuther; BONCIANI, ROBERTO; T. Gehrmann; R. Heinesch; T. Leineweber; P. Mastrolia; E. Remiddi. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - STAMPA. - 706:(2005), pp. 245-324. [10.1016/j.nuclphysb.2004.10.059]
Two-loop QCD corrections to the heavy quark form factors: the vector contributions
BONCIANI, ROBERTO;
2005
Abstract
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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