2021/03/31 by M. Gao, Meisen Gao, Jun Gao
Physics and Astronomy · #Bottom quark #Collider #Differential (mechanical device) #Electron #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Lepton #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quark #Scale (ratio) #Top quark #hep-ph
paper · pdf · doi:10.1103/physrevd.104.053005
published as Phys. Rev. D 104, 053005 (2021) · 13 pages, 12 figures, 8 tables; Published version
arxiv created 2021/09/09 · openalex publication_date 2021/09/15 · arxiv updated 2021/09/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a phenomenological study of the single top (anti)quark production with leptonic decays at the Large Hadron Electron Collider at next-to-leading order (NLO) in QCD. We focus on various differential distributions in a fiducial region. The NLO corrections can reduce the fiducial cross section by 14%. We find that the NLO predictions exhibit strong stability under scale variations for most observables considered, while the scale variations at leading order dominate in the theoretical uncertainties. We propose a method of determining the top quark mass using the measurement of the average transverse momentum of the charged lepton. The scale variations at the NLO induce a theoretical uncertainty of about 1.3 GeV of the extracted top quark mass. The statistical error of the extracted top quark mass amounts to 1.1 GeV. We also investigate the impact of the QCD corrections and the scale variations in searches for the anomalous Wtb couplings.