Finite-Width Effects in Top Quark Production at Hadron Colliders
High Energy Physics - Phenomenology
2009-11-07 v2
Abstract
Production cross sections for t\bar{t} and t\bar{t}j events at hadron colliders are calculated, including finite width effects and off resonance contributions for the entire decay chain, t --> bW --> b\ell\nu, for both top quarks. Resulting background rates to Higgs search at the CERN LHC are updated for inclusive H --> WW studies and for H --> \tau\tau and H --> WW decays in weak boson fusion events. Finite width effects are large, increasing t\bar{t}(j) rates by 20% or more, after typical cuts which are employed for top-background rejection.
Cite
@article{arxiv.hep-ph/0107181,
title = {Finite-Width Effects in Top Quark Production at Hadron Colliders},
author = {N. Kauer and D. Zeppenfeld},
journal= {arXiv preprint arXiv:hep-ph/0107181},
year = {2009}
}
Comments
32 pages, 11 figures, 7 tables; minor changes, reference added, to be published in Phys. Rev. D