Automating methods to improve precision in Monte-Carlo event generation for particle colliders

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.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Technische Universität Dresden

Year

2008

Author dc:creator

• Gleisberg, Tanju

Contributors dc:contributor

• Kobel, Michael
• Krauss, Frank
• Seymour, Michael H.

• theoretical particle physics
• event simulation
• matrix element generation
• Monte-Carlo
• theoretische Teilchenphysik
• Eventsimulation
• Matrixelementgenerierung