Angular distributions in t t ¯ H (H →b b ¯) reconstructed events at the LHC
Summary, in English
The associated production of a Higgs boson and a top-quark pair, tt¯H, in proton-proton collisions is addressed in this paper for a center of mass energy of 13 TeV at the LHC. Dileptonic final states of tt¯H events with two oppositely charged leptons and four jets from the decays t→bW+→b+ν, t¯→b¯W-→b¯-ν¯ and h→bb¯, are used. Signal events, generated with MadGraph5-aMC@NLO, are fully reconstructed by applying a kinematic fit. New angular distributions of the decay products as well as angular asymmetries are explored in order to improve discrimination of tt¯H signal events over the dominant irreducible background contribution, tt¯bb¯. Even after the full kinematic fit reconstruction of the events, the proposed angular distributions and asymmetries are still quite different in the tt¯H signal and the dominant background (tt¯bb¯).
- Subatomic Physics
- ISSN: 1550-7998