Understanding single-top-quark production and jets at hadron colliders

Details Understanding single-top-quark production and jets at hadron colliders Understanding single-top-quark production and jets at hadron colliders

2004-08-04

arxiv.org/abs/hep-ph/0408049v2

Phys.Rev. D70 (2004) 114012

Physics

High Energy Physics

High Energy Physics - Phenomenology

40 pgs., revtex4, 35 ps figs; added Fig. 4, 1 Ref., minor clarifications, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.70.114012

I present an analysis of fully differential single-top-quark production plus jets at next-to-leading order. I describe the effects of jet definitions, top-quark mass, and higher orders on the shapes and normalizations of the kinematic distributions, and quantify all theoretical uncertainties. I explain how to interpret next-to-leading-order jet calculations, and compare them to showering event generators. Using the program ZTOP, I show that HERWIG and PYTHIA significantly underestimate both s-channel and t-channel single-top-quark production, and propose a scheme to match the relevant samples to the next-to-leading-order predictions.

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