Heavy Quarks at Threshold: Recent Developments

2004/09/02 by Matthias Steinhauser, Steinhauser, Matthias
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0409016

5 pages,talk given at the LCWS Paris, France, April 2004

arxiv created 2004/09/02 · openalex publication_date 2004/09/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Recent developments in the treatment of a system of heavy quarks close to their production threshold are discussed. Particular emphasis is put on the next-to-next-to-next-to-leading order (N³LO) corrections to the energy levels and the wave function and their effect on the cross section σ(e⁺e^-→ tt). Furthermore, the resummation of logarithmic corrections within the framework of potential non-relativistic QCD (pNRQCD) are considered.

Related

• New results on heavy quarks near threshold
• Heavy quark production near the threshold in QCD
• High order PT calculations for heavy quarks near threshold
• Resummation of threshold double logarithms in inclusive production of heavy quarkonium
• Third-order correction to top-quark pair production near threshold II. Potential contributions