Strong Final State Interactions in gamma.gamma --> W+W-
High Energy Physics - Phenomenology
2009-11-07 v1
Abstract
We study the effects of a possible strong final state interaction among longitudinal W's in gamma.gamma --> W+W-. The relevant partial wave amplitudes are modified by an Omn\`es function approximated by a Breit-Wigner form factor. We study the fractional cross section f_{00} = \sigma_{LL}/\sigma_{Total} with both W's longitudinally polarised, in the presence of a J = 2 resonance (M = 2.5 TeV, Width = 500 GeV) or a J = 0 resonance (M = 1 TeV, Width = 1 TeV), whose parameters are scaled up from the f_2 and \sigma resonances in the \pi\pi system. We also examine the effects of final state interaction in the case of polarised photons (J_z = 0 or J_z = 2), and the impact on the Drell-Hearn-Gerasimov sum rule.
Keywords
Cite
@article{arxiv.hep-ph/0211179,
title = {Strong Final State Interactions in gamma.gamma --> W+W-},
author = {P. Poulose and L. M. Sehgal},
journal= {arXiv preprint arXiv:hep-ph/0211179},
year = {2009}
}
Comments
12 pages including figures