Two-loop helicity amplitudes for fermion-fermion scattering
| dc.creator | De Freitas, A. | |
| dc.creator | Bern, Z. | |
| dc.date | 2004-09-03 | |
| dc.date.accessioned | 2026-07-07T03:53:20Z | |
| dc.date.available | 2026-07-07T03:53:20Z | |
| dc.description | We discuss the calculation of two-loop helicity amplitudes for quark-quark scattering in QCD and four-gluino scattering in N=1 supersymmetric Yang-Mills theory. We study the dependence of the results on different variants of dimensional regularization. In particular, we consider the 't Hooft-Veltman and four-dimensional helicity (FDH) schemes. We also discuss ambiguities in continuing the Dirac algebra to D dimensions. For the four-gluino case, once the infrared divergent part of the amplitude is subtracted, the finite remainder is free of these ambiguities. | |
| dc.description | Presented at 7th DESY Workshop on Elementary Particle Theory: Loops and Legs in Quantum Field Theory, Zinnowitz, Germany, 25-30 Apr 2004 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0409036 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0409036 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43800 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Two-loop helicity amplitudes for fermion-fermion scattering | |
| dc.type | text |