2017/01/05 by Roger Naranjo, Naranjo, Roger · 2 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies
paper · doi:10.48550/arxiv.1701.01275
openalex publication_date 2017/01/05 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
Measurements of the top--antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-p_\rmT leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 \textrmfb-1 from pp collisions at a center-of-mass energy √(s) = 8~TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: ACℓ ℓ based on the selected leptons and AC^tt based on the reconstructed tt final state. No significant deviation from the Standard Model expectations is observed.