The new muon g-2 puzzle
Giovedì, 21 maggio·14:00 - 15:00
Aula Caldirola (University of Milan Statale)
Speakers: Alexander Lind (Frascati National Laboratories (LNF)) I will present two research projects on the phenomenology of top quarks at present and future colliders. The first is concerning the interpretation of top quark mass measurements in terms of well-known theory definitions. We have simulated fictitious top-flavoured mesons, whose mass can be related to any top mass definition by means of Heavy Quark Effective Theory. We have explored final-state observables for top-pair production in ee and pp collisions, and related the top mass in standard ttbar events to the pole mass extracted from top-meson samples simulated with Pythia. The second project is considering NLO QCD corrections to pp -> H -> ttbar in the SM and BSM scenarios. This process is subject to large interference effects between loop-induced Higgs-mediated amplitudes and the QCD continuum background which tend to overcompensate any resonance contributions. The inclusion of decays of the top quarks with spin correlations and parton showering is important for accurate predictions and will be performed with a novel POWHEG+OpenLoops interface.