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. - 706:1-2(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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
