Invisible Higgs and dark matter

Heikinheimo, Matti; Tuominen, Kimmo; Virkajärvi, Jussi

doi:10.1007/jhep07(2012)117

Cited by 7 publications

(12 citation statements)

References 73 publications

(124 reference statements)

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“…In order to treat the regions where the annihilation cross section is enhanced, we need to decrease the value of Yukawa coupling. A suppressed coupling leads to suppression of the annihilation rates [13,26]. The effect of the Higgs pole at M DM ∼ h/2 is more dramatic than the effect of the Z pole.…”

Section: Indirect Detectionmentioning

confidence: 99%

“…In the Higgs Triplet Model, the tree-level decay width of the Higgs boson into vectorlike neutrinos is [21,26] […”

Section: Invisible Decay Width Of the Higgs Bosonmentioning

confidence: 99%

“…Above M DM = 80 GeV annihilation into W + W − pairs (and later also Z bosons) becomes kinematically accessible. Finally, the relic density becomes dramatically suppressed for M DM ∼ 100 GeV due to co-annihilation with the lightest charged vectorlike lepton [13,26]. The effect of the Higgs resonance at M DM ∼ 62 GeV is slightly more pronounced for sin α = 0.8 than for sin α = 0 (this is the effect of increasing the triplet component contribution) and, above M DM = 80 GeV, for sin α = 0.8, the relic abundance decrease is slightly more pronounced than in the case with sin α = 0, but the changes are small.…”

Section: Dark Matter Relic Densitymentioning

confidence: 99%

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Dark matter in the Higgs triplet model

Bahrami

Frank

2015

Phys. Rev. D

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The inability to predict neutrino masses and the existence of the dark matter are two essential shortcomings of the Standard Model. The Higgs Triplet Model provides an elegant resolution of neutrino masses via the seesaw mechanism. We show here that introducing vectorlike leptons in the model also provides a resolution to the problem of dark matter. We investigate constraints, including the invisible decay width of the Higgs boson and the electroweak precision variables, and impose restrictions on model parameters. We analyze the effect of the relic density constraint on the mass and Yukawa coupling of dark matter. We also calculate the cross sections for indirect and direct dark matter detection and show our model predictions for the neutrino and muon fluxes from the Sun, and the restrictions they impose on the parameter space. With the addition of vectorlike leptons, the model is completely consistent with dark matter constraints, in addition to improving electroweak precision and doubly charged mass restrictions, which are rendered consistent with present experimental data.

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Section: Indirect Detectionmentioning

confidence: 99%

“…In the Higgs Triplet Model, the tree-level decay width of the Higgs boson into vectorlike neutrinos is [21,26] […”

Section: Invisible Decay Width Of the Higgs Bosonmentioning

confidence: 99%

Section: Dark Matter Relic Densitymentioning

confidence: 99%

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Dark matter in the Higgs triplet model

Bahrami

Frank

2015

Phys. Rev. D

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“…Finally, we can provide a Majorana mass for the singlet field β M either via a dimension five interaction with the Higgs, (λ ββ /Λ)H † ββH, or through a VEV of a new weak SU(2) singlet field S, which can plausibly emerge from a more complete extended technicolor theory. In the former case the WIMP is very strongly coupled to Higgs, and hence heavily constrained by the direct DM searches [47]. We therefore choose the latter option and include the following gauge-and Z 2 symmetric interaction Lagrangian:…”

Section: Jcap10(2013)036mentioning

confidence: 99%

Dark matter from unification

Kainulainen

Tuominen

Virkajärvi

2013

J. Cosmol. Astropart. Phys.

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Abstract. We consider a minimal extension of the Standard Model (SM), which leads to unification of the SM coupling constants, breaks electroweak symmetry dynamically by a new strongly coupled sector and leads to novel dark matter candidates. In this model, the coupling constant unification requires the existence of electroweak triplet and doublet fermions singlet under QCD and new strong dynamics underlying the Higgs sector. Among these new matter fields and a new right handed neutrino, we consider the mass and mixing patterns of the neutral states. We argue for a symmetry stabilizing the lightest mass eigenstates of this sector and determine the resulting relic density. The results are constrained by available data from colliders and direct and indirect dark matter experiments. We find the model viable and outline briefly future research directions.

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“…Because the partial decay widths of Higgs boson provide an important information for answering the nature of Higgs sector (for our deeper understanding of the dynamics of electroweak symmetry breaking). In all decay channels of Higgs boson, H → invisible particles and H → γ plus invisible particles [4,5,6,7,8,9,10] are also great of interest by following aspects: (i) these processes can be probed at future colliders [4,5,6,8,10] for testing the standard model (SM) at modern energy regions; (ii) many new heavy particles such as new extra gauge bosons, charged (and neutral) scalar particles may exchange in the loop diagrams of the aforementioned decay channels. Thus, the decay processes could provide a useful tool for testing the SM and investigating possible new physics.…”

Section: Introductionmentioning

confidence: 99%

One-loop contributions to the decay $H\rightarrow ν_l\barν_lγ$ in standard model revisited

Tran,

Phan

2021

Preprint

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One-loop contributions to the decay H → ν l νl γ with l = e, µ, τ within standard model framework are revisited in this paper. We derive two representations for the form factors in this calculation. As a result, the computations are not only checked numerically by verifying the ultraviolet finiteness of the results but also confirming the ward identity of the amplitude. We find that the results are good stability with varying ultraviolet cutoff parameters as well as satisfy the ward identity. In phenomenological results, all the physical results are examined with the present input parameters. Especially, we study the partial decay widths for the decay channels in both cases of the detected photon and invisible photon. Differential decay widths are also generated as a function of energy of final photon.

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Invisible Higgs and dark matter

Cited by 7 publications

References 73 publications

Dark matter in the Higgs triplet model

Dark matter in the Higgs triplet model

Dark matter from unification

One-loop contributions to the decay $H\rightarrow ν_l\barν_lγ$ in standard model revisited

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