Dark matter in the inert doublet model after the discovery of a Higgs-like boson at the LHC
By A. Goudelis, B. Herrmann, Oscar Stål. 2013
245 citations recorded by the source corpus.
A bstractWe examine the Inert Doublet Model in light of the discovery of a Higgs-like boson with a mass of roughly 126 GeV at the LHC. We evaluate one-loop corrections to the scalar masses and perform a numerical solution of the one-loop renormalization group equations. Demanding vacuum stability, perturbativity, and S-matrix unitarity, we compute the scale up to which the model can be extrapolated. From this we derive constraints on the model parameters in the presence of a 126 GeV Higgs boson. We perform an improved calculation of the dark matter relic density with the Higgs mass fixed to the measured value, taking into account the effects of three- and four-body final states resulting from off-shell production of gauge bosons in dark matter annihilation. Issues related to direct detection of dark matter are discussed, in particular the role of hadronic uncertainties. The predictions for the interesting decay mode h0 → γγ are presented for scenarios which fulfill all model constraints, and we discuss how a potential enhancement of this rate from the charged inert scalar is related to the properties of dark matter in this model. We also apply LHC limits on Higgs boson decays to invisible final states, which provide additional constraints on the mass of the dark matter candidate. Finally, we propose three benchmark points that capture different aspects of the relevant phenomenology.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/fbbdaf524b684b2ebe208bcb6874a5710726837b
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Citations in the corpus
- Building and testing models with extended Higgs sectors (2017, background): “Several comprehensive analyses of astroparticle and collider constraints on the IDM parameter space have been published [437, 438, 439, 440, 441]; below we borrow some illustrative examples from [441].”
- Dark Matter through the Higgs portal (2019, background): “It plays nevertheless an important role since it influences the one–loop corrections to the masses of the Higgs states which are crucial to properly determine the DM relic density in the coannihilation regime [412].”
- Higgs Physics at the HL-LHC and HE-LHC (2019, background): “[524, 525, 526, 527] and [528, 529, 530, 531, 532, 533] for models with and without supersymmetry).”
- micrOMEGAs_3: A program for calculating dark matter observables (2013, background): “This effect was shown to be particularly important in models such as the inert doublet model where the DM candidate is a scalar and has a standard SU(2) coupling to W’s [50, 52, 51].”
- Anatomy of the inert two-Higgs-doublet model in the light of the LHC and non-LHC dark matter searches (2016, methodology): “Reference [59] took into account one-loop corrections to the masses and, for a part of the numerical scans, (1)Even if we started with a complex λ5, we could redefine the second doublet via a global phase rotation, which would render λ5 real without affecting any other part of the Lagrangian.”