Search for Higgs portal DM at the ILC

Abstract

Higgs portal dark matter (DM) models are simple interesting and viable DM models. There are three types of the models depending on the DM spin: scalar, fermion and vector DM models. In this paper, we consider renormalizable, unitary and gauge invariant Higgs portal DM models, and study how large parameter regions can be surveyed at the International Linear Collider (ILC) experiment at $\sqrt{s}=500$ GeV. For the Higgs portal singlet fermion and vector DM cases, the force mediator involves two scalar propagators, the SM-like Higgs boson and the dark Higgs boson. We show that their interference generates interesting and important patterns in the mono-$Z$ plus missing $E_T$ signatures at the ILC, and the results are completely different from those obtained from the Higgs portal DM models within the effective field theories. In addition, we show that it would be possible to distinguish the spin of DM in the Higgs portal scenarios, if the shape of the recoil-mass distribution is observed. We emphasize that the interplay between these collider observations and those in the direct detection experiments has to be performed in the model with renomalizability and unitarity to combine the model analyses in different scales.

25 pages, 15 figures; minor changes, references added; discussions added, numbers in Table 1 corrected

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Cited by in corpus (32)

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• A Global View of the Off-Shell Higgs Portal
• A comprehensive approach to dark matter studies: exploration of simplified top-philic models
• Multi-Component Dark Matter: the vector and fermion case
• Gravitational waves from first order electroweak phase transition in models with the $U(1{)}_X^{}$ gauge symmetry
• Higgs portal dark matter in non-thermal cosmologies
• Electroweak vacuum stability in presence of singlet scalar dark matter in TeV scale seesaw models
• Dark Higgs Bosons at Colliders
• Improved bounds on ${\mathbb{Z}}_3$ singlet dark matter
• GAMBIT and its Application in the Search for Physics Beyond the Standard Model
• Testing scalar versus vector dark matter
• Collider Searches for Dark Matter through the Higgs Lens
• Characterizing Higgs portal dark matter models at the ILC
• Simplified DM models with the full SM gauge symmetry : the case of $t$-channel colored scalar mediators
• Exploring properties of long-lived particles in inelastic dark matter models at Belle II
• Variations on the Vev Flip-Flop: Instantaneous Freeze-out and Decaying Dark Matter
• Prospects for discovery and spin discrimination of dark matter in Higgs portal DM models and their extensions at 100 TeV $pp$ collider
• Forward-backward asymmetry in the gauge-Higgs unification at the International Linear Collider
• Searching for pseudo Nambu-Goldstone boson dark matter production in association with top quarks
• Right-Handed Neutrino Dark Matter with Forbidden Annihilation
• Searching for GeV-scale Majorana Dark Matter: inter spem et metum
• Dark-matter-spin effects at future $e^{+}{e}^{-}$ colliders
• Conformal Portal to Dark Matter
• Probing Higgs portals with matrix-element based kinematic discriminants in $ZZ\to 4\ell$ production
• Sensitivity to invisible Higgs boson decays at CLIC
• Heavy dark matter through the dilaton portal
• Addendum to "Invisible Higgs decay width versus dark matter direct detection cross section in Higgs portal dark matter models"
• Impact of the 125 GeV Higgs boson on the singlet fermion dark matter searches at the LHC
• The Higgs-portal for Dark Matter:effective field theories versus concrete realizations
• Diphoton resonance at the ILC