A theoretical update on t \bar{t} production near threshold

Abstract

We present an evaluation of the t\bar{t} cross section near threshold at next-to-next-to-leading logarithmic accuracy, using a two-step matching procedure. QED corrections are taken into account as well and are shown to be numerically important. Finally we give an outlook on how to further improve the theoretical predictions with particular emphasis on how to consistently include finite width effects.

arXiv commentTalk presented at the International Workshop on Top Quark Physics, January 12-15 2006, Coimbra, Portugal

References in corpus (24)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Asymptotic expansion of Feynman integrals near threshold
• The static potential in QCD to two loops
• A quark mass definition adequate for threshold problems
• The static quark-antiquark potential in QCD to three loops
• Two-loop Correction to the Leptonic Decay of Quarkonium
• B decay and the Upsilon mass
• Two-loop QCD corrections to the heavy quark pair production cross section in e+e- annihilation near the threshold
• Top quark production near threshold and the top quark mass
• Potential NRQED: The Positronium Case
• The Heavy Quarkonium Spectrum at Order $m{\alpha }_s^5\ln {\alpha }_s$
• Third-order Coulomb corrections to the S-wave Green function, energy levels and wave functions at the origin
• Renormalization group improvement of the NRQCD Lagrangian and heavy quarkonium spectrum
• The QCD heavy-quark potential to order v^2: one loop matching conditions
• Renormalization group analysis of the QCD quark potential to order v^2
• Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation
• Renormalization Group Scaling of the 1/m^2 HQET Lagrangian
• Three-Loop Anomalous Dimension of the Heavy Quark Pair Production Current in Non-Relativistic QCD
• Electroweak Absorptive Parts in NRQCD Matching Conditions
• Renormalization Group Improved Sum Rule Analysis for the Bottom Quark Mass
• Top-Antitop Pair Production close to Threshold: Synopsis of recent NNLO Results
• Perturbative heavy quark-antiquark systems
• Towards pair production near threshold with unstable particle effective theory
• Summing Logs of the Velocity in NRQCD and Top Threshold Physics