Probing a degenerate-scalar scenario in a pseudoscalar dark-matter model

Abstract

We study a pseudoscalar dark-matter model arising from a complex singlet extension of the standard model (SM), and show that the dark-matter--nucleon scattering is suppressed when two CP-even scalars are degenerate. In such a degenerate-scalar scenario we explore the model parameter space which satisfies constraints from the direct detection experiments and the relic density of dark matter. In addition, we discuss a possibility to verify such a scenario by using the recoil mass technique at the International Linear Collider. We find that a pair of states separated by 0.2 GeV can be distinguished from the single SM-like Higgs state at 5$\sigma$ with integrated luminosity of 2 ab${}^{-1}$.

arXiv comment18 pages, 8 figures. version accepted for publication in Phys. Rev. D

References in corpus (35)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• UFO - The Universal FeynRules Output
• Implication of neutrino backgrounds on the reach of next generation dark matter direct detection experiments
• Observation of the diphoton decay of the Higgs boson and measurement of its properties
• Complex Singlet Extension of the Standard Model
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• A Renormalizable Model for the Galactic Center Gamma Ray Excess from Dark Matter Annihilation
• Dark Matter through the Higgs portal
• A measurement of the Higgs boson mass in the diphoton decay channel
• MadDM v.3.0: a Comprehensive Tool for Dark Matter Studies
• Exploring Resonant di-Higgs production in the Higgs Singlet Model
• Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
• A cancellation mechanism for dark matter-nucleon interaction
• Measurement of the Higgs boson mass in the $H\to Z{Z}^{\ast }\to 4\ell$ and $H\to \gamma \gamma$ channels with $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• MadDM v.1.0: Computation of Dark Matter Relic Abundance Using MadGraph5
• Loop corrections to dark matter direct detection in a pseudoscalar mediator dark matter model
• Pseudo-Goldstone dark matter confronts cosmic ray and collider anomalies
• Diagnosing Degenerate Higgs Bosons at 125 GeV
• Direct Detection of Dark Matter with MadDM v.2.0
• Probing pseudo Nambu-Goldstone boson dark matter at loop level
• Mass-degenerate Higgs bosons at 125 GeV in the Two-Higgs-Doublet Model
• Probing pseudo-Goldstone dark matter at the LHC
• One-loop contribution to dark matter-nucleon scattering in the pseudoscalar dark matter model
• Scalar Dark Matter: Direct vs. Indirect Detection
• Measurement of the Higgs boson mass and $e^{+}{e}^{-}\to ZH$ cross section using $Z\to {\mu }^{+}{\mu }^{-}$ and $Z\to e^{+}{e}^{-}$ at the ILC
• Testing scalar versus vector dark matter
• Direct and indirect probes of Goldstone dark matter
• Global fit of pseudo-Nambu-Goldstone Dark Matter
• Pseudo-Goldstone dark matter: gravitational waves and direct-detection blind spots
• Electroweak Corrections in a Pseudo-Nambu Goldstone Dark Matter Model Revisited
• Future prospects of mass-degenerate Higgs bosons in the $CP$-conserving two-Higgs-doublet model

Cited by in corpus (9)

• Singlet extensions and W boson mass in the light of the CDF II result
• Dark matter from a complex scalar singlet: The role of dark CP and other discrete symmetries
• Probing a light dark sector at future lepton colliders via invisible decays of the SM-like and dark Higgs bosons
• A model of pseudo-Nambu-Goldstone dark matter from a softly broken $SU(2)$ global symmetry with a $U(1)$ gauge symmetry
• Gravitational wave effects and phenomenology of a two-component dark matter model
• Suppression of Higgs Mixing by Quantum Zeno Effect
• CP-violating effects on gravitational waves in a complex singlet extension of the Standard Model with degenerate scalars
• Non-Scaling Topological Defects and Gravitational Waves in Higgs Portal
• Primordial Black Hole Formation and Multimessenger Signals in a Complex Singlet Extension of the Standard Model