Signals for vector-like leptons in an $S_3$-symmetric 2HDM at ILC

Abstract

In this work, we explore the signals of an $S_3$-symmetric two Higgs doublet model with two generations of vector-like leptons (VLLs) at the proposed International Linear Collider (ILC). The lightest neutral component of the VLL in this model provides a viable dark matter (DM) candidate satisfying the current relic density data as well as circumventing all direct and indirect DM search constraints. Some representative benchmark points have been selected with low, medium and high DM masses, satisfying all theoretical and experimental constraints of the model and constraints coming from the DM sector. The VLLs (both neutral and charged) will be produced in pair leading to multi-lepton and multi-jet final states. We show that the ILC will prove to be a much more efficient and useful machine to hunt for such signals compared to LHC. Using traditional cut-based analysis as well as sophisticated multivariate analysis, we perform a detailed analysis of some promising channels containing mono-lepton plus di-jet, di-lepton, four-lepton and four jets along with missing transverse energy in the final state at 1 TeV ILC.

arXiv commentMinor changes with the previous version, version accepted in European Physics Journal C

References in corpus (53)

• 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
• A Large Mass Hierarchy from a Small Extra Dimension
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Alternative to Compactification
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Results from a search for dark matter in the complete LUX exposure
• The Littlest Higgs
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Light custodians in natural composite Higgs models
• Phenomenology of the Little Higgs Model
• The Characterization of the Gamma-Ray Signal from the Central Milky Way: A Compelling Case for Annihilating Dark Matter
• micrOMEGAs4.1: two dark matter candidates
• Flavor Structure of Warped Extra Dimension Models
• Dark Matter Search Results from the Complete Exposure of the PICO-60 C${}_3$F${}_8$ Bubble Chamber
• Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies
• Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• Top Quark Seesaw Theory of Electroweak Symmetry Breaking
• Electroweak Symmetry Breaking via Top Condensation Seesaw
• Top Quarks and Electroweak Symmetry Breaking in Little Higgs Models
• Extra vector-like matter and the lightest Higgs scalar boson mass in low-energy supersymmetry
• Scenarii for interpretations of the LHC diphoton excess: two Higgs doublets and vector-like quarks and leptons
• Collider Signals of Top Quark Flavor Violation from a Warped Extra Dimension
• Top Quark Seesaw, Vacuum Structure and Electroweak Precision Constraints
• Higgs Boson Mass, Sparticle Spectrum and Little Hierarchy Problem in Extended MSSM
• Realistic Composite Higgs Models
• Higgs Low-Energy Theorem (and its corrections) in Composite Models
• Supersymmetry Breaking, Fermion Masses and a Small Extra Dimension
• A Little Solution to the Little Hierarchy Problem: A Vector-like Generation
• Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
• Raising the Higgs mass with Yukawa couplings for isotriplets in vector-like extensions of minimal supersymmetry
• Search for supersymmetry in events with four or more leptons in $\sqrt{s}=13$ TeV $pp$ collisions with ATLAS
• Collider Signature of T-quarks
• Fermion Generations, Masses and Mixing Angles from Extra Dimensions
• Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider
• Bounds on the Fermion-Bulk Masses in Models with Universal Extra Dimensions
• Collider signatures of mirror fermions in the framework of Left Right Mirror Model
• Doublet-Triplet Splitting and Fermion Masses with Extra Dimensions
• Dark Matter and Collider Studies in the Left-Right Symmetric Model with Vector-Like Leptons
• Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets
• Searching for signatures of $E_6$
• Vector Leptons in the Higgs Triplet Model
• Multi-lepton signals from the top-prime quark at the LHC
• Dark Matter in the Higgs Triplet Model
• Dark Matter Phenomenology of SM and Enlarged Higgs Sectors Extended with Vector Like Leptons
• Quark mixing in an $S_3$ symmetric model with two Higgs doublets
• Two Higgs doublet models with an $S_3$ symmetry
• A Lepton-specific Universal Seesaw Model with Left-Right Symmetry
• Probing the $H^{\pm }{W}^{\mp }Z$ interaction at the high energy upgrade of the LHC
• Quark lepton unification in higher dimensions
• New signals for vector-like down-type quark in $U(1)$ of $E_6$
• Dark Matter and Collider Searches in $S_3$-Symmetric 2HDM with Vector Like Leptons