Approximate N 2 LO and N 3 LO QCD predictions for t W production
Abstract
We present high-precision predictions for associated t W production at the LHC that incorporate the next-to-next-to-leading-order hard and soft functions as well as the complete next-to-next-to-next-to-leading-order scale-dependent terms derived from the corresponding anomalous dimensions. These higher-order corrections, which dominate the full perturbative results, increase the next-to-leading-order cross section by more than 10%. Based on the comparison with ATLAS and CMS measurements, we directly extract the Cabibbo-Kobayashi-Maskawa matrix element | V t b | = 0.99 ± 0.03 ( expt ) ± 0.03 ( theor ) without assuming unitarity, achieving a precision comparable with the current world average value.
Fields of Study & Subjects
Particle physics theoretical and experimental studies
High-Energy Particle Collisions Research
Quantum Chromodynamics and Particle Interactions
Publication details
- Journal / source
- Physical review. D/Physical review. D.
- Publisher
- American Physical Society (APS)
- Volume
- 114
- Issue
- 1
- Publication date
- 15 June 2026
- Language
- EN