This thesis concerns with numerical methods for a theoretical description of high energy particle scattering experiments. It focuses on fixed order perturbative calculations, i.e. on matrix elements and scattering cross sections at leading and next-to-leading order. For the leading order a number of algorithms for the matrix element generation and the numeric integration over the phase space are studied and implemented in a computer code, which allows to push the current limits on the complexity of the final state and the precision. For next-to-leading order calculations necessary steps towards a fully automated treatment are performed. A subtraction method that allows a process independent regularization of the divergent virtual and real corrections is implemented, and a new approach for a semi-numerically evaluation of one-loop amplitudes is investigated.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:14-ds-1208999423010-50333 |
| Date | 24 April 2008 |
| Creators | Gleisberg, Tanju |
| Contributors | Technische Universität Dresden, Physik, Prof. Dr. Michael Kobel, Prof. Dr. Michael Kobel, Dr. Frank Krauss, Prof. Dr. Michael H. Seymour |
| Publisher | Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:doctoralThesis |
| Format | application/pdf |
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