Inert doublet model and LEP II limits

Lundström, Erik; Gustafsson, M.; Edsjö, Joakim

doi:10.1103/physrevd.79.035013

Cited by 250 publications

(285 citation statements)

References 33 publications

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“…As a result they can change the invisible decay width of the later unless the mass of DM is greater than half of Z-boson mass. This gives a lower bound on the mass scale of either SDDM or FDDM to be > ∼ 45 GeV [76].…”

Section: Constraints From Collidermentioning

confidence: 99%

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Arina

Sahu

2012

Nuclear Physics B

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Abstract. The nature of dark matter (DM) particles and the mechanism that provides their measured relic abundance are currently unknown. In this paper we investigate inert scalar and vector like fermion doublet DM candidates with a charge asymmetry in the dark sector, which is generated by the same mechanism that provides the baryon asymmetry, namely baryogenesis-via-leptogenesis induced by decays of scalar triplets. At the same time the model gives rise to neutrino masses in the ballpark of oscillation experiments via type II seesaw. We discuss possible sources of depletion of asymmetry in the DM and visible sectors and solve the relevant Boltzmann equations for quasi-equilibrium decay of triplet scalars. A Monte-Carlo-Markov-Chain analysis is performed for the whole parameter space. The survival of the asymmetry in the dark sector leads to inelastic scattering off nuclei. We then apply bayesian statistic to infer the model parameters favoured by the current experimental data, in particular the DAMA annual modulation and Xenon100 exclusion limit. The latter strongly disfavours asymmetric scalar doublet DM of mass O( TeV) as required by DM-DM oscillations, while an asymmetric vector like fermion doublet DM with mass around 100 GeV is a good candidate for DAMA annual modulation yet satisfying the constraints from Xenon100 data.

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Section: Constraints From Collidermentioning

confidence: 99%

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Arina

Sahu

2012

Nuclear Physics B

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“…We thus take M H 0 ≪ v tree and M A 0 ≈ M H ± > M h 0 [19,24]. This mass configuration allow also to satisfy the existing collider limits [31,32]. Because…”

Section: Parameters Of the Idmmentioning

confidence: 99%

Inert dark matter and strong electroweak phase transition

2012

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The main virtue of the Inert Doublet Model (IDM) is that one of its spinless neutral bosons can play the role of Dark Matter. Assuming that the additional sources of CP violation are present in the form of higher dimensional operator(s) we reexamine the possibility that the model parameters for which the right number density of relic particles is predicted are compatible with the first order phase transition that could lead to electroweak baryogenesis.We find, taking into account recent indications from the LHC and the constraints from the electroweak precision data, that for a light DM (40-60 GeV) particle H 0 and heavy, almost degenerate additional scalars H ± and A 0 this is indeed possible but the two parameters most important for the strength of the phase transition: the common mass of H ± and A 0 and the trilinear coupling of the Higgs-like particle h 0 to DM are strongly constrained. H ± and A 0 must weight less than ∼ 440 GeV if the inert minimum is to be the lowest one and the value of the h 0 H 0 H 0 coupling is limited by the XENON 100 data. We stress the important role of the zero temperature part of the potential for the strength of the phase transition.PACS numbers:12.60. Fr, 12.15.Ji, 98.80.Cq, 95.35.+d

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“…Assuming a fixed mass hierarchy M H 0 < M A 0 , a more detailed analysis of the IDM parameter space with respect to LEP data leads to the limit M A 0 100 GeV [13]. Considering both possible mass hierarchies between H 0 and A 0 , we require…”

Section: Jhep09(2013)106mentioning

confidence: 99%

“…[12]). The new states predicted by the IDM have been subjected to collider bounds [13], and they provide an interesting phenomenology for the Large Hadron Collider (LHC) [3,[14][15][16][17][18]. While by now a heavy Higgs boson with SM couplings is experimentally ruled out [19,20], the model still remains attractive due to its dark matter features.…”

Section: Jhep09(2013)106mentioning

confidence: 99%

Dark matter in the inert doublet model after the discovery of a Higgs-like boson at the LHC

Goudelis

Herrmann

Stål

2013

J. High Energ. Phys.

242

271

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We examine the Inert Doublet Model in light of the discovery of a Higgs-like boson with a mass of roughly 126 GeV at the LHC. We evaluate one-loop corrections to the scalar masses and perform a numerical solution of the one-loop renormalization group equations. Demanding vacuum stability, perturbativity, and S-matrix unitarity, we compute the scale up to which the model can be extrapolated. From this we derive constraints on the model parameters in the presence of a 126 GeV Higgs boson. We perform an improved calculation of the dark matter relic density with the Higgs mass fixed to the measured value, taking into account the effects of three-and four-body final states resulting from off-shell production of gauge bosons in dark matter annihilation. Issues related to direct detection of dark matter are discussed, in particular the role of hadronic uncertainties. The predictions for the interesting decay mode h 0 → γγ are presented for scenarios which fulfill all model constraints, and we discuss how a potential enhancement of this rate from the charged inert scalar is related to the properties of dark matter in this model. We also apply LHC limits on Higgs boson decays to invisible final states, which provide additional constraints on the mass of the dark matter candidate. Finally, we propose three benchmark points that capture different aspects of the relevant phenomenology.

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Inert doublet model and LEP II limits

Cited by 250 publications

References 33 publications

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Inert dark matter and strong electroweak phase transition

Dark matter in the inert doublet model after the discovery of a Higgs-like boson at the LHC

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