Completely Automated Calculations of MultiLoop Diagrams
Abstract
The computation of higher order processes very often involves a large number of diagrams. In addition, it is in general not possible to solve the occurring integrals explicitly and expansions in small quantities have to be performed. This makes it necessary to automate the calculations as much as possible. A program package will be described which generates automatically the Feynman diagrams, manipulates the expressions in the desired way and performs the computation. As a physical application O(\alpha\alpha_s) corrections to the decay rate of the $Z$ boson into bottom quarks are discussed.
 Publication:

arXiv eprints
 Pub Date:
 November 1998
 DOI:
 10.48550/arXiv.hepph/9811342
 arXiv:
 arXiv:hepph/9811342
 Bibcode:
 1998hep.ph...11342S
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 Latex, 8 pages, 2 figures, sprocl.sty needed (included), to be published in the proceedings of RADCOR 98, Barcelona, 812 Sep. 1998