Precision calculations for gamma gamma --> WW --> 4fermions(+gamma)
Abstract
The O(alpha) electroweak radiative corrections to gamma gamma --> WW --> 4f within the electroweak Standard Model are calculated in double-pole approximation (DPA). Virtual corrections are treated in DPA, and real-photonic corrections are based on complete lowest-order matrix elements for gamma gamma --> 4f+gamma. The radiative corrections are implemented in a Monte Carlo generator called COFFERgammagamma, which optionally includes anomalous triple and quartic gauge-boson couplings in addition and performs a convolution over realistic spectra of the photon beams. A brief survey of numerical results comprises O(alpha) corrections to integrated cross sections as well as to angular and invariant-mass distributions.
Keywords
Cite
@article{arxiv.hep-ph/0506024,
title = {Precision calculations for gamma gamma --> WW --> 4fermions(+gamma)},
author = {A. Bredenstein and S. Dittmaier and M. Roth},
journal= {arXiv preprint arXiv:hep-ph/0506024},
year = {2007}
}
Comments
6 pages, latex, 10 postscript figures, to appear in the proceedings of the "2005 International Linear Collider Workshop" (LCWS05), Stanford 2005