Testing nonperturbative techniques in the scalar sector of the standard model
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
We discuss the current picture of the standard model's scalar sector at strong coupling. We compare the pattern observed in the scalar sector in perturbation theory up to two-loop with the nonperturbative solution obtained by a next-to-leading order 1/N expansion. In particular, we analyze two resonant Higgs scattering processes, ff -> H -> f'f' and ff -> H -> ZZ, WW. We describe the ingredients of the nonperturbative calculation, such as the tachyonic regularization, the higher order 1/N intermediate renormalization, and the numerical methods for evaluating the graphs. We discuss briefly the perspectives and usefulness of extending these nonperturbative methods to other theories.
Keywords
Cite
@article{arxiv.hep-ph/9808497,
title = {Testing nonperturbative techniques in the scalar sector of the standard model},
author = {A. Ghinculov and T. Binoth},
journal= {arXiv preprint arXiv:hep-ph/9808497},
year = {2009}
}