New signals for singlet Higgs and vector-like quarks at the LHC

Abstract

We consider an extension of the Standard Model involving a singlet Higgs and down type vector-like quarks in the light of the current LHC Higgs data. For a good range of the parameters of the Higgs potential, and a mass range for the heavy vector-like quark, we find that the singlet heavy Higgs arising from the production and decay of the vector-like quarks give rise to (2b~4t) signal. The subsequent decay of the top quarks to $b{W}^{+}$ give rise to a final state with six b quarks, two same-sign charged leptons and missing transverse momenta with observable cross-sections at the 14 TeV run of the Large Hadron Collider. The Standard Model background for such a final state is practically negligible.

arXiv comment12 pages, 3 figures

References in corpus (22)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• A handbook of vector-like quarks: mixing and single production
• A Minimal Spontaneously Broken Hidden Sector and its Impact on Higgs Boson Physics at the Large Hadron Collider
• Global fit to Higgs signal strengths and couplings and implications for extended Higgs sectors
• The Higgs Singlet extension parameter space in the light of the LHC discovery
• Reproducing the Higgs boson data with vector-like quarks
• Single Vectorlike Quark Production at the LHC
• The recent Higgs boson data and Higgs triplet model with vectorlike quarks
• Singlet scalars as Higgs imposters at the Large Hadron Collider
• Hiding the Higgs Boson with Multiple Scalars
• Higgs Phenomenology in the Two-Singlet Model
• Higgs Phenomenology in the Minimal Dilaton Model after Run I of the LHC
• Controlling the fine-tuning problem with singlet scalar dark matter
• Taming the Scalar Mass Problem with a Singlet Higgs Boson
• Universal Doublet-Singlet Higgs Couplings and phenomenology at the CERN Large Hadron Collider
• A singlet-triplet extension for the Higgs search at LEP and LHC
• Hidden Extra U(1) at the Electroweak/TeV Scale

Cited by in corpus (16)

• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Phenomenology of a 750 GeV Singlet
• LHC Benchmark Scenarios for the Real Higgs Singlet Extension of the Standard Model
• Higgs singlet boson as a diphoton resonance in a vector-like quark model
• Diphoton excess at 750 GeV: Singlet scalars confront triviality
• The 750 GeV Diphoton excess in a $U(1)$ hidden symmetry model
• Simplified Models for Higgs Physics: Singlet Scalar and Vector-like Quark Phenomenology
• Broad toplike vector quarks at LHC and HL-LHC
• Constraints on the quark mixing matrix with vector-like quarks
• Single production of $X_{\pm 5/3}$ and $Y_{\mp 4/3}$ vectorlike quarks at the LHC
• Non-standard signatures of vector-like quarks in a leptophobic 221 model
• Impact of a colored vector resonance on the collider constraints for top-like top partner
• New signals for vector-like down-type quark in $U(1)$ of $E_6$
• Vector-like quarks with a scalar triplet
• Indian Contributions to LHC Theory
• Machine learning tagged boosted dark photon: A signature of fermionic portal matter at the LHC