Higgs decays to dark matter: beyond the minimal model

Pospelov, Maxim; Ritz, Adam

doi:10.48550/arxiv.1109.4872

Cited by 19 publications

(27 citation statements)

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“…Currently, the best-known value of the DM relic density (or abundance) comes from the Planck satellite measurement of the cosmic microwave background (CMB) temperature and lensingpotential power spectra [64] Ω DM h 2 = 0.1199 ± 0.0027, (16) where Ω DM ≡ ρ DM /ρ c is the fraction of the DM mass density relative to the critical density ρ c = 3H 2 0 /8πG, and the parameter h = H 0 /(100 km s −1 Mpc −1 ) is the reduced Hubble constant.…”

Section: A Relic Densitymentioning

confidence: 99%

“…The efficiency curves φ(E) are generated by TPMC [116] using the NEST [117,118] model. 16 The LUXCalc package requires as inputs the effective SI scalar DM-nucleon coupling G SI N and the pseudoscalar DM-nucleon coupling G SI N to calculate the SI cross section in Eq. ( 44).…”

Section: Nonfermion Modelsmentioning

confidence: 99%

“…LUXCalc homepage: http://www.nordita.org/ ~savage/LUXCalc/index.html 16. NEST homepage: http://nest.physics.ucdavis.edu/site/.…”

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confidence: 99%

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Combined analysis of effective Higgs portal dark matter models

et al. 2016

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We combine and extend the analyses of effective scalar, vector, Majorana and Dirac fermion Higgs portal models of dark matter (DM), in which DM couples to the Standard Model (SM) Higgs boson via an operator of the form O DM H † H. For the fermion models,we take an admixture of scalar ψψ and pseudoscalar ψiγ 5 ψ interaction terms. For each model, we apply constraints on the parameter space based on the Planck measured DM relic density and the LHC limits on the Higgs invisible branching ratio. For the first time, we perform a consistent study of the indirect detection prospects for these models based on the WMAP7/Planck observations of the cosmic microwave background, a combined analysis of 15 dwarf spheroidal galaxies by Fermi-LAT and the upcoming Cherenkov Telescope Array (CTA). We also perform a correct treatment of the momentum-dependent direct search cross section that arises from the pseudoscalar interaction term in the fermionic DM theories. We find, in line with previous studies, that current and future direct search experiments such as LUX and XENON1T can exclude much of the parameter space, and we demonstrate that a joint observation in both indirect and direct searches is possible for high mass weakly interacting massive particles. In the case of a pure pseudoscalar interaction of a fermionic DM candidate, future gamma-ray searches are the only class of experiment capable of probing the high mass range of the theory.

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Section: A Relic Densitymentioning

confidence: 99%

Section: Nonfermion Modelsmentioning

confidence: 99%

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Combined analysis of effective Higgs portal dark matter models

et al. 2016

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“…[4][5][6] This scalar singlet S interacts with the SM only through the Higgs portal, S 2 |H| 2 , and has a variety of implications in different contexts, including thermal production and annihilation signals, [29][30][31] inflation, [32][33][34][35][36] baryogenesis [37][38][39] and direct detection through Higgs decay. [40][41][42][43][44] Constraints from several experiments and cosmological observations have been imposed on the scalar singlet DM model. Among a range of studies are the ones using data from XENON100 and WMAP, 45,46 LHC, [47][48][49] anti-proton, 50, 51 LUX, 52 LUX and PandaX, 53,54 Planck 1, 55, 56 and Fermi -LAT.…”

Section: Introductionmentioning

confidence: 99%

Dark energy, scalar singlet dark matter and the Higgs portal

Landim

2018

Mod. Phys. Lett. A

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One of the simplest extensions of the Standard Model (SM) comprises the inclusion of a massive real scalar field, neutral under the SM gauge groups, to be a dark matter candidate. The addition of a dimension-six term into the potential of the scalar dark matter enables the appearance of a false vacuum that describes the cosmic acceleration. We show that the running of the singlet self-interaction and the Higgs portal coupling differs from the standard scalar singlet dark matter model. If we maintain a positive quartic coupling, it is also possible to describe the accelerated expansion of the Universe through a false vacuum with the addition of a dimension-eight interaction term. In this case, where the potential remains bounded from below at low energies, the false vacuum decay is highly suppressed.

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“…we are not the first to discuss decaying dark matter of this form (see, e.g., Refs. [4][5][6] for prior work). However our main point is that these decays are actually part of a larger complementarity, and that this enhanced complementarity can be an important ingredient in probing and constraining the parameter spaces of theories with non-trivial dark sectors.…”

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confidence: 99%

Dark-Matter Decay as a Complementary Probe of Multicomponent Dark Sectors

et al. 2015

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In single-component theories of dark matter, the 2 → 2 amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries. These crossing relations lie at the heart of the celebrated complementarity which underpins different existing dark-matter search techniques and strategies. In multi-component theories of dark matter, by contrast, there can be many different dark-matter components with differing masses. This then opens up a new, "diagonal" direction for dark-matter complementarity: the possibility of darkmatter decay from heavier to lighter dark-matter components. In this work, we discuss how this new direction may be correlated with the others, and demonstrate that the enhanced complementarity which emerges can be an important ingredient in probing and constraining the parameter spaces of such models.Introduction.-In recent years, many search techniques have been exploited in the hunt for dark matter [1]. These include possible dark-matter production at colliders; direct detection of cosmological dark matter through its scattering off ordinary matter at underground experiments; and indirect detection of dark matter through observation of the remnants of the annihilation of cosmological dark matter into ordinary matter at terrestrial or satellite-based experiments. At first glance, these different techniques may seem to rely on three independent properties of dark matter, namely its amplitudes for production, scattering, and annihilation. However, these three amplitudes are often related to each other through various crossing symmetries. As a result, the different corresponding search techniques are actually correlated with each other through their dependence on a single underlying interaction which couples dark matter to ordinary matter, and the results achieved through any one of these search techniques will have immediate implications for the others as well as for this underlying interaction. This is the origin of the celebrated complementarity which connects the different existing dark-matter search techniques (for a review, see Ref.[2]).

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Higgs decays to dark matter: beyond the minimal model

Cited by 19 publications

References 0 publications

Combined analysis of effective Higgs portal dark matter models

Combined analysis of effective Higgs portal dark matter models

Dark energy, scalar singlet dark matter and the Higgs portal

Dark-Matter Decay as a Complementary Probe of Multicomponent Dark Sectors

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