Production of heavy Higgs bosons and decay into top quarks at the LHC. II: Top-quark polarization and spin correlation effects

Abstract

We analyze, within several parameter scenarios of type-II two-Higgs doublet extensions of the standard model, the impact of heavy neutral Higgs-boson resonances on top-quark pair production and their subsequent decay to dileptonic final states at the LHC (13 TeV). In particular, we investigate the effects of heavy Higgs bosons on top-spin observables, that is, the longitudinal top-quark polarization and top-quark spin correlations. We take into account NLO QCD as well as weak interaction corrections and show that top-spin observables, if evaluated in judiciously chosen top-quark pair invariant mass bins, can significantly enhance the sensitivity to heavy Higgs resonances in top-quark pair events.

36 pages, 9 figures

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Cited by in corpus (9)

• Higher order corrections to spin correlations in top quark pair production at the LHC
• HL-LHC and ILC sensitivities in the hunt for heavy Higgs bosons
• Next-to-leading order corrections to decays of the heavier CP-even Higgs boson in the two Higgs doublet model
• Search for heavy pseudoscalar and scalar bosons decaying to a top quark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Interference Resurrection of the $\tau$ Dipole through Quantum Tomography
• Higgs interference effects at the one-loop level in the 1-Higgs-Singlet extension of the Standard Model
• Polarization of top quark in vector-like quark decay
• Higgs interference effects in top-quark pair production in the 1HSM
• Higgs production in association with bottom quark pair at LHC