Near threshold expansion of Feynman diagrams
| dc.creator | Mendels, E. | |
| dc.date | 2005-08-22 | |
| dc.date.accessioned | 2026-07-07T03:55:25Z | |
| dc.date.available | 2026-07-07T03:55:25Z | |
| dc.description | The near threshold expansion of Feynman diagrams is derived from their configuration space representation, by performing all x integrations. The general scalar Feynman diagram is considered, with an arbitrary number of external momenta, an arbitrary number of internal lines and an arbitrary number of loops, in n dimensions and all masses may be different. The expansions are considered both below and above threshold. Rules, giving real and imaginary part, are derived. Unitarity of a sunset diagram with I internal lines is checked in a direct way by showing that its imaginary part is equal to the phase space integral of I particles. | |
| dc.description | 57 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0508234 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0508234 | |
| dc.identifier | J.Math.Phys. 46 (2005) 072308 | |
| dc.identifier | doi:10.1063/1.1947119 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44554 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Near threshold expansion of Feynman diagrams | |
| dc.type | text |