Dilepton signals in the inert doublet model

Dolle, Ethan M.; Miao, X.; Su, Shufang; Thomas, Brooks

doi:10.1103/physrevd.81.035003

Cited by 128 publications

(166 citation statements)

References 54 publications

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“…In case of the inert doublet model as standard thermal relic there is still room up from 45 GeV to 300 GeV for a NFW profile and 250 GeV for an isothermal halo. It has been shown that this mass range provides the correct WMAP relic abundance thanks to three body annihilation channels [104,105] and is in the reach of LHC [106,107]. On the contrary, the asymmetric fermionic doublet is a good DM candidate up to 200 or 300 GeV depending on the DM density profile, in addition of satisfying the DM to baryon ratio.…”

Section: Results For Scalar and Fermionic Candidatesmentioning

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: Results For Scalar and Fermionic Candidatesmentioning

confidence: 99%

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Arina

Sahu

2012

Nuclear Physics B

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“…In the λ 5 < 0 and λ 4 + λ 5 < 0 region, the DM candidate, i.e., the lightest Z 2 -odd particle, would be the CP-even neutral particle H. In this model there are three distinctive regions of m H where one can expect to obtain proper relic density [16,17,32,[46][47][48][49][50][51][52][53]. (c) A heavy state DM with mass 550 GeV, where all particles' masses are almost degenerate and relic density is driven by coannihilation processes combined with annihilation into gauge bosons.…”

Section: Jhep11(2014)016mentioning

confidence: 99%

Dark matter with two inert doublets plus one Higgs doublet

Keus

King

Moretti

et al. 2014

J. High Energ. Phys.

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Following the discovery of a Higgs boson, there has been renewed interest in the general 2-Higgs-Doublet Model (2HDM). A model with One Inert Doublet plus One Higgs Doublet (I(1+1)HDM), where one of the scalar doublets is "inert" (since it has no vacuum expectation value and does not couple to fermions) has an advantage over the 2HDM since it provides a good Dark Matter (DM) candidate, namely the lightest inert scalar. Motivated by the existence of three fermion families, here we consider a model with two scalar doublets plus one Higgs doublet (I(2+1)HDM), where the two scalar doublets are inert. The I(2+1)HDM has a richer phenomenology than either the I(1+1)HDM or the 2HDM. We discuss the new regions of DM relic density in the I(2+1)HDM with simplified couplings and address the possibility of constraining the model using recent results from the Large Hadron Collider (LHC) and DM direct detection experiments.

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“…[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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Dilepton signals in the inert doublet model

Cited by 128 publications

References 54 publications

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Asymmetric inelastic inert doublet dark matter from triplet scalar leptogenesis

Dark matter with two inert doublets plus one Higgs doublet

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

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