Searching for heavy charged Higgs bosons through top quark polarization

Abstract

We study the production of a heavy charged Higgs boson at the Large Hadron Collider (LHC) in [Formula: see text] within a 2-Higgs Doublet Model (2HDM). The chiral structure of the [Formula: see text] coupling can trigger a particular spin state of the top quark produced in the decay of a charged Higgs boson and, therefore, is sensitive to the underlying mechanism of the Electroweak Symmetry Breaking (EWSB). Taking two benchmark models (2HDM type-I and 2HDM type-Y) as an example, we show that inclusive rates, differential distributions and forward–backward asymmetries of the top quark’s decay products can be used to search for heavy charged Higgs bosons and also as model discriminators.

Two-Higgs-Doublet Model with Soft CP-violation Confronting Electric Dipole Moments and Colliders

“…In addition to the aforementioned observables, we also study the sensitivity of the following angle [21] which applies to all the spin quantization axses used here. It was also found that the energy distributions of the top quark decay products carry some information on the polarization state of the top (anti)quark [148][149][150][151][152][153][154][155][156]. We follow the same definitions used by [150,152] and study the ratios of the different energies.…”