Flavor changing heavy Higgs interactions at the LHC
Journal
Physics Letters B
Journal Volume
42
Journal Issue
10
Pages
135-142
Date Issued
2018
Author(s)
Abstract
A general two Higgs doublet model (2HDM) is adopted to study the signature of flavor changing neutral Higgs (FCNH) decay ϕ0→tc-+t-c, where ϕ0 could be a CP-even scalar (H0) or a CP-odd pseudoscalar (A0). Measurement of the light 125 GeV neutral Higgs boson (h0) couplings at the Large Hadron Collider (LHC) favor the decoupling limit or the alignment limit of a 2HDM, in which gauge boson and diagonal fermion couplings of h0 approach Standard Model values. In such limit, FCNH couplings of h0 are naturally suppressed by a small mixing parameter cos(β-α), while the off-diagonal couplings of heavier neutral scalars ϕ0 are sustained by sin(β-α)~1. We study physics background from dominant processes with realistic acceptance cuts and tagging efficiencies. Promising results are found for the LHC running at 13 or 14 TeV collision energies.
SDGs
Type
journal article