Neutralino dark matter in the MSSM with CP violation

Bélanger, G.; Boudjema, F.; Kraml, S.; Pukhov, A.; Semenov, A.

doi:10.1063/1.2409066

Cited by 6 publications

(5 citation statements)

References 56 publications

(91 reference statements)

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“…where T 0 is the temperature of the microwave background. In this work we adopt the freeze-out approximation, and use micrOMEGAs3.3 for numerical calculation of the relic density [73,74]. The freeze-out temperature T f can be defined from the relation Y (T f ) = (1 + δ) Y eq (T f ) with δ being a constant and can be determined by solving with δ = 1.5 [73].…”

Section: Dm Thermal Relic Densitymentioning

confidence: 99%

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

Zhou

2014

J. High Energ. Phys.

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Abstract:We investigate an extension of the standard model (SM) with a singlet fermionic dark matter (DM) particle which interacts with the SM sector through a real singlet scalar. The presence of a new scalar provides the possibility of generating a strongly first order phase transition needed for electroweak baryogenesis. Taking into account the latest Higgs search results at the LHC and the upper limits from the DM direct detection experiments especially that from the LUX experiment, and combining the constraints from the LEP experiment and the electroweak precision test, we explore the parameter space of this model which can lead to the strongly first order phase transition. Both the tree-and loop-level barriers are included in the calculations. We find that the allowed mass of the second Higgs particle is in the range ∼ 30-350 GeV. The allowed mixing angle α between the SM-like Higgs particle and the second Higgs particle is constrained to α 28 • . The DM particle mass is predicted to be in the range ∼15-350 GeV. The future XENON1T experiment can rule out a significant proportion of the parameter space of this model. The constraint can be relaxed only when the mass of the SM-like Higgs particle is degenerate with that of the second Higgs particle, or the mixing angle is small enough.

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Section: Dm Thermal Relic Densitymentioning

confidence: 99%

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

Zhou

2014

J. High Energ. Phys.

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“…Still, simply to perform a pioneering investigation, we have examined a first example of such a proposal. to be definite, we have chosen the recently proposed approach that can be called light stop scenario connected with electroweak baryogenesis [23]. These scenarios involve CP violating phases.…”

Section: Susymentioning

confidence: 99%

Single top-quark production in thet- channel at CERN LHC: A realistic test of electroweak models

et al. 2006

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We compute the complete electroweak one-loop effect on the process of t-channel single top production at LHC in the Standard Model and in the MSSM within the mSUGRA symmetry breaking scheme. We find that the one-loop electroweak SM effect is large, and decreases the cross section of an amount that is of the same size as that of the NLO QCD one. The genuine SUSY effect in the mSUGRA scheme, for a general choice of benchmark points, is rather small.It might become large and visible in more general scenarios around thresholds involving light stop and neutralino mass values.

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“…The WIMPs are the most studied CDM candidates and arise naturally in several theoretical frameworks such as Supersymmetry [7,8], Universal Extra Dimensions [9], Little Higgs Models [10], Technicolor [11], etc., but since all these theories remain hypothetical [12], it is equally worthwhile to tackle less conventional possibilities. For this reason, we are going to explore a small gauge extension of the electroweak sector of SM, SU(3) C ⊗ SU(3) L ⊗ U(1) N , 3-3-1 for short (for a nice review see Ref.…”

Section: Introductionmentioning

confidence: 99%

WIMPs in a 3-3-1 model with heavy sterile neutrinos

et al. 2011

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In this work we build a gauge model based on the SUð3Þ c SUð3Þ L Uð1Þ N symmetry with heavy neutrinos and show that we can have two weakly interacting cold dark matter candidates in its spectrum. This is achieved by noticing that a global Uð1Þ symmetry can be imposed on the model in such a way that the stability of the dark matter is guaranteed. We obtain their relic abundance and analyze their compatibility with recent direct detection experiments, also exploring the possibility of explaining the two events reported by CDMSII. An interesting outcome of this 3-3-1 model, concerning direct detection of these WIMPs, is a strong bound on the symmetry breaking scale, which imposes it to be above 3 TeV.

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Neutralino dark matter in the MSSM with CP violation

Cited by 6 publications

References 56 publications

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

Strongly first order phase transition in the singlet fermionic dark matter model after LUX

Single top-quark production in thet- channel at CERN LHC: A realistic test of electroweak models

WIMPs in a 3-3-1 model with heavy sterile neutrinos

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