New results for t bar t production at hadron colliders
U. Langenfeld, S. Moch, and P. Uwer
TL;DR
This paper provides advanced NNLO theoretical predictions for top-antitop production cross sections at hadron colliders, including uncertainty analysis and a fit formula for the LHC, also extending predictions to a hypothetical heavy quark.
Contribution
It introduces new NNLO calculations for t t̄ production, analyzes uncertainties, and offers a fit formula for LHC energies and predictions for a hypothetical heavy quark.
Findings
NNLO cross section predictions for Tevatron and LHC
Quantified scale and PDF uncertainties
Provided a fit formula for LHC energy dependence
Abstract
We present new theoretical predictions for the t bar t production cross section at NNLO at the Tevatron and the LHC. We discuss the scale uncertainty and the errors due to the parton distribution functions (PDFs). For the LHC, we present a fit formula for the pair production cross section as a function of the center of mass energy and we provide predictions for the pair production cross section of a hypothetical heavy fourth generation quark t'.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions