The real singlet scalar dark matter model

Guo, Wanlei; Wu, Yonggang

doi:10.1007/jhep10(2010)083

Cited by 104 publications

(78 citation statements)

References 54 publications

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“…ref. [1][2][3][4][5][6][7][8]), consists in adding to the SM a gauge singlet real scalar η, and assuming that it is stable due to a parity η → −η. The model is quite predictive since it only depends on two extra parameters: the singlet mass m η and its "portal" coupling to the Higgs boson, λ.…”

Section: Motivationmentioning

confidence: 99%

“…This is mainly due to new non-renormalizable interactions between η and the SM fields, arising from operators of dimension-six suppressed by 1/f 2 where f ∼ TeV is the decay constant of the NGBs. There are two types of these interactions: (i) derivative couplings between η and H, fully determined by the SO(6)/SO(5) structure, that scale as p 2 /f 2 where p is the relevant momentum in a given process, and (ii) direct couplings between η and the SM fermions, arising from the explicit breaking of the global SO (6) symmetry, that scale as m ψ p/f 2 where m ψ is the mass of the fermion. These interactions make the phenomenology of the composite scalar DM substantially different from that of an elementary scalar (similar candidates of composite scalar DM have been also proposed, for instance, in the context of techni-colour theories [12] and gauge-Higgs unified models [13]; see also ref.…”

Section: Jhep07(2012)015mentioning

confidence: 99%

“…The 4 is identified with H, while the gauge singlet is η (see appendix A for details). Thinking of SO (6) as the rotation group in a six-dimensional space, the symmetry under which η shifts corresponds to a rotation in the 5-6 plane,…”

Section: Light Scalar Dark Matter From a Composite Sectormentioning

confidence: 99%

“…To recover the predictions of the renormalizable model [1][2][3][4][5][6][7][8], that we will refer to as the 'non-composite case', we can take the limit f → ∞. In this case only λ controls the interactions of η with the SM fields.…”

Section: Jhep07(2012)015mentioning

confidence: 99%

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Composite scalar dark matter

Frigerio

Pomarol

Riva

et al. 2012

J. High Energ. Phys.

157

227

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We show that the dark matter (DM) could be a light composite scalar η, emerging from a TeV-scale strongly-coupled sector as a pseudo Nambu-Goldstone boson (pNGB). Such state arises naturally in scenarios where the Higgs is also a composite pNGB, as in O(6)/O(5) models, which are particularly predictive, since the low-energy interactions of η are determined by symmetry considerations. We identify the region of parameters where η has the required DM relic density, satisfying at the same time the constraints from Higgs searches at the LHC, as well as DM direct searches. Compositeness, in addition to justify the lightness of the scalars, can enhance the DM scattering rates and lead to an excellent discovery prospect for the near future. For a Higgs mass m h 125 GeV and a pNGB characteristic scale f 1 TeV, we find that the DM mass is either m η 50−70 GeV, with DM annihilations driven by the Higgs resonance, or in the range 100−500 GeV, where the DM derivative interaction with the Higgs becomes dominant. In the former case the invisible Higgs decay to two DM particles could weaken the LHC Higgs signal.

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Section: Motivationmentioning

confidence: 99%

Section: Jhep07(2012)015mentioning

confidence: 99%

Section: Light Scalar Dark Matter From a Composite Sectormentioning

confidence: 99%

Section: Jhep07(2012)015mentioning

confidence: 99%

See 2 more Smart Citations

Composite scalar dark matter

Frigerio

Pomarol

Riva

et al. 2012

J. High Energ. Phys.

157

227

View full text Add to dashboard Cite

show abstract

“…The DM mass (m χ ) is taken to be roughly half of the SM Higgs-boson mass to ensure on-shell decay of H → hχχ, and to suppress invisible decay modes of h, as described in Ref. [15]. While no assumptions are made here as to the nature of H, it can be viewed as a part of a 2HDM þ χ scenario where H may be considered as the CP-even heavy scalar boson [14].…”

Section: Introductionmentioning

confidence: 99%

Search for dark matter in association with a Higgs boson decaying to two photons at s=13 TeV with the ATLAS detector

Aaboud¹,

Aad²,

Abbott³

et al. 2017

Phys. Rev. D

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A search for dark matter in association with a Higgs boson decaying to two photons is presented. This study is based on data collected with the ATLAS detector, corresponding to an integrated luminosity of 36.1 fb −1 of proton-proton collisions at the LHC at a center-of-mass energy of 13 TeV in 2015 and 2016. No significant excess over the expected background is observed. Upper limits at 95% confidence level are set on the visible cross section for beyond the Standard Model physics processes, and the production cross section times branching fraction of the Standard Model Higgs boson decaying into two photons in association with missing transverse momentum in three different benchmark models. Limits at 95% confidence level are also set on the observed signal in two-dimensional mass planes. Additionally, the results are interpreted in terms of 90% confidence-level limits on the dark-matternucleon scattering cross section, as a function of the dark-matter particle mass, for a spin-independent scenario.

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h→γγ excess and dark matter from composite Higgs models

Chala

2013

J. High Energ. Phys.

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Composite Higgs Models are very appealing candidates for a natural realization of electroweak symmetry breaking. Non minimal models could explain the recent Higgs data from ATLAS, CMS and Tevatron experiments, including the excess in the amount of diphoton events, as well as provide a natural dark matter candidate. In this article, we study a Composite Higgs model based on the coset SO(7)/G2. In addition to the Higgs doublet, one SU (2) L singlet of electric charge one, κ ± , as well as one singlet η of the whole Standard Model group arise as pseudo-Goldstone bosons. κ ± and η can be responsible of the diphoton excess and dark matter respectively.

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The real singlet scalar dark matter model

Cited by 104 publications

References 54 publications

Composite scalar dark matter

Composite scalar dark matter

Search for dark matter in association with a Higgs boson decaying to two photons at s=13 TeV with the ATLAS detector

h→γγ excess and dark matter from composite Higgs models

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