CEPC Precision of Electroweak Oblique Parameters and Weakly Interacting Dark Matter: the Scalar Case

Abstract

We investigate the sensitivity to weakly interacting scalar dark matter from future determination of electroweak oblique parameters in the Circular Electron-Positron Collider (CEPC) project. As illuminating examples, three dark matter models with scalar electroweak multiplets are studied. The multiplet couplings to the standard model Higgs doublet can break the mass degeneracy among the components, leading to nonzero contributions to oblique parameters. The dark matter candidate in these model is either a CP-even or CP-odd scalar, whose trilinear coupling to the Higgs boson could induce direct detection signals. For some moderate coupling values, we find that the CEPC sensitivity can be better than current direct detection experiments, exploring up to a TeV mass scale.

28 pages, 8 figures, accepted for publication in Nuclear Physics B

References in corpus (13)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Dark Matter Candidates from Particle Physics and Methods of Detection
• First Dark Matter Search Results from the XENON1T Experiment
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Techniques for the calculation of electroweak radiative corrections at the one-loop level and results for W-physics at LEP200
• The diphoton signal of the light Higgs boson in Natural NMSSM
• Doublet-Triplet Fermionic Dark Matter
• Phenomenological signatures of mixed complex scalar WIMP dark matter
• Higgs-strahlung production process e^+ e^- \to Z h at the future Higgs factory in the Minimal Dilaton Model
• The Sommerfeld Enhancement in the Scotogenic Model with Large Electroweak Scalar Multiplets
• Effective Theories and Electroweak Precision Constraints
• The Effects on $S$, $T$, and $U$ from Higher-Dimensional Fermion Representations

Cited by in corpus (22)

• Global analyses of Higgs portal singlet dark matter models using GAMBIT
• Charged lepton flavor violating Higgs decays at future $e^{+}{e}^{-}$ colliders
• Collider Probes of Real Triplet Scalar Dark Matter
• Probing dark matter particles at CEPC
• Pseudo-Nambu-Goldstone dark matter and two-Higgs-doublet models
• Exploring Fermionic Dark Matter via Higgs Boson Precision Measurements at the Circular Electron Positron Collider
• Two Component Singlet-Triplet Scalar Dark Matter and Electroweak Vacuum Stability
• Electroweak dark matter model accounting for the CDF $W$-mass anomaly
• Exploring triplet-quadruplet fermionic dark matter at the LHC and future colliders
• Fermionic and scalar dark matter with hidden $\mathrm{U}(1)$ gauge interaction and kinetic mixing
• Impact of Fermionic Electroweak Multiplet Dark Matter on Vacuum Stability with One-loop Matching
• Corrections to electroweak precision observables from mixings of an exotic vector boson in light of the CDF $W$-mass anomaly
• Dark matter and electroweak phase transition in the mixed scalar dark matter model
• New Physics Search at the CEPC: a General Perspective
• Electroweak Multiplet Dark Matter at Future Lepton Colliders
• Scalar Quintuplet Minimal Dark Matter with Yukawa Interactions: Perturbative up to the Planck Scale
• Minimal Dark Matter in the Local $B-L$ Extension
• Spontaneous mirror left-right symmetry breaking for leptogenesis parametrized by Majorana neutrino mass matrix
• Probing quadruplet scalar dark matter at current and future $pp$ colliders
• Inert sextuplet scalar dark matter at the LHC and future colliders
• Exploring Fermionic Multiplet Dark Matter through Precision Measurements at the CEPC
• Probing mixed-state dark matter and flavor observables in a scalar-assisted baryonic gauge theory