Constraining Higgs mediated dark matter interactions

Greljo, Admir; Julio, J.; Kamenik, Jernej F.; Smith, C.; Zupan, Jure

doi:10.1007/jhep11(2013)190

Cited by 47 publications

(50 citation statements)

References 65 publications

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“…This is the well-known "Higgs Portal" scenario for dark matter [130][131][132][133][134][135][136][137][138][139][140][141][142][143][144][145][146][147][148][149] (similarly, one could consider the "dilaton" portal [150][151][152][153]). …”

Section: Higgs Mediatorsmentioning

confidence: 99%

Scalar simplified models for dark matter

2015

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We introduce a set of minimal simplified models for dark matter interactions with the Standard Model, connecting the two sectors via either a scalar or pseudoscalar particle. These models have a wider regime of validity for dark matter searches at the LHC than the effective field theory approach, while still allowing straightforward comparison to results from non-collider dark matter detection experiments. Such models also motivate dark matter searches in multiple correlated channels. In this paper, we constrain scalar and pseudoscalar simplified models with direct and indirect detection experiments, as well as from existing LHC searches with missing energy plus tops, bottoms, or jets, using the exact loop-induced coupling with gluons. This calculation significantly affects key differential cross sections at the LHC, and must be properly included. We make connections with the Higgs sector, and conclude with a discussion of future searches at the LHC.

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Section: Higgs Mediatorsmentioning

confidence: 99%

Scalar simplified models for dark matter

2015

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“…It is known that the smallness of the doublet-singlet mixing constrains significantly the latter processes. In fact, the Higgs portal type DM models are already ruled out unless the main annihilation modes occur entirely in the dark sector [79,80]. This is the case of Dark SUSY [14] and Dark Technicolour [13] models.…”

Section: Dark Matter a Dm Annihilation Cross Section And Relic Dementioning

confidence: 99%

Towards completing the standard model: Vacuum stability, electroweak symmetry breaking, and dark matter

et al. 2014

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We study the standard model (SM) in its full perturbative validity range between ΛQCD and the U (1)Y Landau pole, assuming that a yet unknown gravitational theory in the UV does not introduce additional particle thresholds, as suggested by the tiny cosmological constant and the absence of new stabilising physics at the EW scale. We find that, due to dimensional transmutation, the SM Higgs potential has a global minimum at 10 26 GeV, invalidating the SM as a phenomenologically acceptable model in this energy range. We show that extending the classically scale invariant SM with one complex singlet scalar S allows us to: (i) stabilise the SM Higgs potential; (ii) induce a scale in the singlet sector via dimensional transmutation that generates the negative SM Higgs mass term via the Higgs portal; (iii) provide a stable CP-odd singlet as the thermal relic dark matter due to CP-conservation of the scalar potential; (iv) provide a degree of freedom that can act as an inflaton in the form of the CP-even singlet. The logarithmic behaviour of dimensional transmutation allows one to accommodate the large hierarchy between the electroweak scale and the Landau pole, while understanding the latter requires a new non-perturbative view on the SM.

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“…Typical scattering cross sections involving DM effective couplings to the SM Higgs (like C S HH ) are in the ballpark of current experimental limits [44][45][46][47][48]. They may also contribute to mono-Higgs production at colliders [49,50], and for light enough DM (m χ < m h 0 =2) to the invisible Higgs decay width [51][52][53][54].…”

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confidence: 99%

New Constraints on Dark Matter Effective Theories from Standard Model Loops

2014

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We consider an effective field theory for a gauge singlet Dirac dark matter particle interacting with the standard model fields via effective operators suppressed by the scale Λ ≳ 1 TeV. We perform a systematic analysis of the leading loop contributions to spin-independent Dirac dark matter-nucleon scattering using renormalization group evolution between Λ and the low-energy scale probed by direct detection experiments. We find that electroweak interactions induce operator mixings such that operators that are naively velocity suppressed and spin dependent can actually contribute to spin-independent scattering. This allows us to put novel constraints on Wilson coefficients that were so far poorly bounded by direct detection. Constraints from current searches are already significantly stronger than LHC bounds, and will improve in the near future. Interestingly, the loop contribution we find is isospin violating even if the underlying theory is isospin conserving. DOI: 10.1103/PhysRevLett.112.191304 PACS numbers: 95.35.+d, 11.10.Gh, 11.10.Hi, 12.15.Lk Introduction.-A weakly interacting massive particle (WIMP) is an appealing dark matter (DM) candidate [1][2][3][4]. The lack of evidence for new physics at the Fermi scale motivates us to remain unbiased about the nature of DM and pursue model-independent approaches. Assuming that the DM is the only non-standard model (SM) particle experimentally accessible is not always justified at colliders [5][6][7], and simplified models have been recently proposed to overcome this limitation [8][9][10][11]. Nevertheless, besides very specific cases (e.g., inelastic DM [12]), it is an excellent approximation for direct searches given the small energy exchanged with the target nuclei. Within this approach, DM interactions with SM fields can be parameterized by higher dimensional operators suppressed by the cutoff scale Λ, with the main strength of providing model-independent relations among distinct null DM searches [13][14][15][16][17][18][19][20]. However, different search strategies probe different energy scales, and such a separation of scales may have striking consequences when a connection between different experiments or ultraviolet (UV) complete models with experiments is attempted. Indeed, in some cases loop corrections are known to dramatically alter direct detection (DD) rates [21][22][23][24][25][26][27][28][29].In this Letter we consider the case of a SM gauge singlet Dirac DM (χ), with m χ < Λ, and we calculate the complete set of one-loop effects induced by SM fields for operators up to dimension 6 that contribute to spin-independent (SI) DM-nucleon scattering. The separation between Λ and the DD scale is systematically taken into account via a proper renormalization group (RG) analysis. This procedure requires as a first step the computation of both electroweak (EW) and QCD running from the scale Λ to the EW symmetry breaking scale where threshold corrections are calculated and the heavy SM fields (Higgs boson, top quark, W and Z bosons) get integrated out, giv...

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Constraining Higgs mediated dark matter interactions

Cited by 47 publications

References 65 publications

Scalar simplified models for dark matter

Scalar simplified models for dark matter

Towards completing the standard model: Vacuum stability, electroweak symmetry breaking, and dark matter

New Constraints on Dark Matter Effective Theories from Standard Model Loops

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