An i2HDM Strongly Coupled to a non-Abelian Vector Resonance

Abstract

We study the possibility of a Dark Matter candidate having its origin in an extended Higgs sector which, at least partially, is related to a new strongly interacting sector. More concretely, we consider an i2HDM (i.e. a Type-I Two Higgs Doublet Model supplemented with a Z_2 under which the non-standard scalar doublet is odd) based on the gauge group SU(2)_1 x SU(2)_2 x U(1)_Y. We assume that one of the scalar doublets and the standard fermion transform non-trivially under SU(2)_1 while the second doublet transforms under SU(2)_2. Our main hypothesis is that standard sector is weakly coupled while the gauge interactions associated to the second group is characterized by a large coupling constant. We explore the consequences of this construction for the phenomenology of the Dark Matter candidate and we show that the presence of the new vector resonance reduces the relic density saturation region, compared to the usual i2DHM, in the high Dark Matter mass range. In the collider side, we argue that the mono-Z production is the channel which offers the best chances to manifest the presence of the new vector field. We study the departures from the usual i2HDM predictions and show that the discovery of the heavy vector at the LHC is challenging even in the mono-$Z$ channel since the typical cross sections are of the order of 10^{-2} fb.

References in corpus (28)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Planck 2015 results. XIII. Cosmological parameters
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Planck 2013 results. XVI. Cosmological parameters
• Theory and phenomenology of two-Higgs-doublet models
• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• First Dark Matter Search Results from the XENON1T Experiment
• micrOMEGAs3.1 : a program for calculating dark matter observables
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• The Inert Doublet Model: an Archetype for Dark Matter
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Indirect search for dark matter with micrOMEGAs2.4
• The Other Natural Two Higgs Doublet Model
• Anatomy of the Inert Two Higgs Doublet Model in the light of the LHC and non-LHC Dark Matter Searches
• h\to γγIn Inert Higgs Doublet Model
• Evolution of Universe to the present inert phase
• Search for invisible decays of a Higgs boson using vector-boson fusion in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Electroweak Corrections and Unitarity in Linear Moose Models
• On Composite Two Higgs Doublet Models
• The Effect of Composite Resonances on Higgs decay into two photons
• Two Composite Higgs Doublets: Is it the Low Energy Limit of a Natural Strong Electroweak Symmetry Breaking Sector ?
• Perturbative Unitarity Bounds in Composite 2-Higgs Doublet Models
• Higgs Boson Phenomenology in a Simple Model with Vector Resonances
• The LHC mass limits for the $SU(2{)}_{L+R}$ vector resonance triplet of a strong extension of the Standard model
• Vector resonances at LHC Run II in composite 2HDM
• Theory and Phenomenology of Composite 2-Higgs Doublet Models

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• A Dark Vector Resonance at CLIC