2018/01/15 by E. D. Mendes Gouveia, Gouveia, E., S. P. Amor Dos Santos +21
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.1801.04954
openalex publication_date 2018/01/15 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
The determination of the CP nature of the top quark Yukawa coupling is addressed in this phenomenological work, using tth events at the √(s) = 13 TeV LHC, with h→ b b and through the dilepton decay channel of tt. Signal events were generated for pure CP-even, pure CP-odd and mixed-CP coupling scenarios. Standard Model (SM) backgrounds were also considered. Angular distributions and asymmetries were studied and found to be potentially good probes to the CP nature of the coupling, even after detector simulation and full event reconstruction using a kinematic fit. Expected limits to the t th production cross-section times branching ratio were obtained for a range of top quark Yukawa CP-mixing angles and for different integrated luminosities of the LHC.