A stable Higgs portal with vector dark matter

Duch, Mateusz; Grza̧dkowski, Bohdan; McGarrie, Moritz

doi:10.1007/jhep09(2015)162

Cited by 57 publications

(44 citation statements)

References 72 publications

(114 reference statements)

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“…A more detailed analysis of this scalar sector but within a different U (1) Z model can be found in Ref. [15] and for the present model in Ref. [16].…”

Section: )mentioning

confidence: 99%

Super-Weak Force and Neutrino Masses

Trocsanyi

2020

Symmetry

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We consider an anomaly free extension of the standard model gauge group G SM by an abelian group to G SM ⊗ U (1) Z . The condition of anomaly cancellation is known to fix the Z-charges of the particles, but two. We fix one remaining charge by allowing for all possible Yukawa interactions of the known left handed neutrinos and new right-handed ones that obtain their masses through interaction with a new scalar field with spontaneously broken vacuum. We discuss some of the possible consequences of the model. Assuming that the new interaction is responsible for the observed differences between the standard model prediction for the anomalous magnetic moment of the muon and its measured value, we constrain the size of the new gauge coupling, the mass of the new gauge boson and the vacuum expectation value of the new scalar field. 2018

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“…A more detailed analysis of this scalar sector but within a different U (1) Z model can be found in Ref. [15] and for the present model in Ref. [16].…”

Section: )mentioning

confidence: 99%

Super-Weak Force and Neutrino Masses

Trocsanyi

2020

Symmetry

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“…Note also that even though naive dimension counting gives 4 for H † HV µ Vµ, it actually originates from a dim-6 operator [8]. See also related analyses in [12][13][14].…”

Section: Introductionmentioning

confidence: 95%

Multicomponent Dark Matter from gauge symmetry

Arcadi

Groß

Lebedev

et al. 2016

J. High Energ. Phys.

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The composition of Dark Matter (DM) remains an important open question. The current data do not distinguish between single-and multi-component DM, while in theory constructions it is often assumed that DM is composed of a single field. In this work, we study a hidden sector which naturally entails multicomponent DM consisting of spin-1 and spin-0 states. This UV complete set-up is based on SU(3) hidden gauge symmetry with the minimal scalar field content to break it spontaneously. The presence of multiple DM components is a result of a residual Z 2 × Z 2 symmetry which is part of an unbroken global U(1) × Z 2 inherent in the Yang-Mills systems. We find that the model exhibits various parametric regimes with drastically different DM detection prospects. In particular, we find that the direct detection cross section is much suppressed in large regions of parameter space as long as the Standard Model Higgs mixes predominantly with a single scalar from the hidden sector. The resulting scattering rate is often beyond the level of sensitivity of XENON1T, while still being consistent with the thermal WIMP paradigm.

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“…Even if we relax the assumption of the local dark gauge symmetry and consider more phenomenological Higgs-portal DM models, there will still appear a singlet scalar boson that can mix with the SM Higgs boson, if the Higgs-portal DM is a singlet Dirac fermion [28,29] or a vector boson [16,30,31]. Also, it can play an important role in DM phenomenology.…”

Section: Dark Matter Models With Dark Gauge Symmetries And/or Higgs Pmentioning

confidence: 99%

Bounds on Higgs-portal models from the LHC Higgs data

Cheung

Ko²,

Lee

et al. 2015

J. High Energ. Phys.

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In a number of Higgs-portal models, an SU(2) isospin-singlet scalar boson generically appears at the electroweak scale and can mix with the Standard Model (SM) Higgs boson with a mixing angle α. This singlet scalar boson can have renormalizable couplings to a pair of dark matter particles, vector-like leptons or quarks, or new gauge bosons, thereby modifying the Higgs signal strengths in a nontrivial way. In this work, we perform global fits to such models using the most updated LHC Higgs-boson data and discuss the corresponding implications on Higgs-portal-type models. In particular we find that the current LHC Higgs-boson data slightly favors the SM over the Higgs-portal singlet-scalar models, which has to be further examined using the upcoming LHC Higgsboson data. Finally, without non-SM particles contributing to the Hγγ and Hgg vertices, the Higgs-portal models are constrained as follows: cos α 0.86 and ∆Γ tot 1.24 MeV at 95% confidence level (CL).

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A stable Higgs portal with vector dark matter

Cited by 57 publications

References 72 publications

Super-Weak Force and Neutrino Masses

Super-Weak Force and Neutrino Masses

Multicomponent Dark Matter from gauge symmetry

Bounds on Higgs-portal models from the LHC Higgs data

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