Finite-Width Effects in Top Quark Production at Hadron Colliders

Details Finite-Width Effects in Top Quark Production at Hadron Colliders Finite-Width Effects in Top Quark Production at Hadron Colliders

2001-07-16

arxiv.org/abs/hep-ph/0107181v2

Phys.Rev. D65 (2002) 014021

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 11 figures, 7 tables; minor changes, reference added, to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.65.014021

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.

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