Top decays with flavor changing neutral Higgs interactions at the LHC
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
716
Journal Issue
1
Pages
225-230
Date Issued
2012
Author(s)
Abstract
We investigate the prospects for discovering a top quark decaying into one light Higgs boson along with a charm quark in top quark pair production at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model is adopted to study the signature of flavor changing neutral Higgs decay t→cφ 0, where φ 0 could be CP-even (H 0) or CP-odd (A 0). The dominant physics background is evaluated with realistic acceptance cuts as well as tagging and mistagging efficiencies. For a reasonably large top-charm-Higgs coupling (λ tc/λ t≳0.09), the abundance of signal events and the reduction in physics background allow us to establish a 5σ signal for M φ~125 GeV at the LHC with a center of mass energy (s) of 8 TeV and an integrated luminosity of 20 fb -1. The discovery potential will be greatly enhanced with the full energy of s=14 TeV. © 2012 Elsevier B.V.
SDGs
Type
journal article