The main purpose of this thesis is to investigate a method for estimating loop integrals containing large masses. Working in Feynman parameter space, the method consists of determining the regions of integration that give the dominant contributions. The method is applied to some integrals that have been worked out in the literature, and it is found that the method can be simple to apply. The percent difference between the approximate and exact results using masses consistent with the Standard Model is typically roughly 30%. Also given are general formulae for arbitrary convergent and divergent one loop integrals with the external momenta set equal to zero.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.60019 |
| Date | January 1991 |
| Creators | Dhirani, Al-Amin |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Physics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001237448, proquestno: AAIMM67716, Theses scanned by UMI/ProQuest. |
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