Massive two-loop vertex functions
Abstract
Calculating massive two-loop vertex functions by splitting integrations into parallel and orthogonal space components has been demonstrated to give a convenient twofold integral representation suitable for numerical evaluation. This method is now extended to more topologies, including the crossed topology, graphs with divergent subloops and infrared divergent diagrams. The connection between this representation and physical and anomalous thresholds is examined.
- Publication:
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Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0168-9002(97)00123-X
- arXiv:
- arXiv:hep-ph/9611378
- Bibcode:
- 1997NIMPA.389..339F
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 30 pages, LaTeX, uses epsfig