Softly shifting away from dark matter direct detection

Abstract

We propose soft breaking mechanism for dark matter (DM) shift symmetry in a class of composite dark matter models, where both DM and the Higgs boson arise as pseudo Nambu-Goldstone bosons from novel strong dynamics. Our mechanism is utilized to suppress the non-derivative portal coupling between the Higgs boson and DM particle, which can evade the stringent bound of current DM direct detection experiments. Otherwise this non-derivative portal coupling would naturally be at the same order of the Higgs quartic, rendering this class of models under severe crisis. For realizing soft breaking mechanism, we introduce vector-like top partners, dubbed as "softons", to restore the shift symmetry of DM in top Yukawa sector, which however is only broken by the softon masses. The portal coupling would automatically vanish as the shift-symmetry-breaking softon masses approach zero. Specifically we present a proof-of-concept model of soft breaking, based on the coset $O(6)/O(5)$ and the simplest fermion embedding, and study its DM phenomenology, where we show a large amount of novel parameter space is opened up by using the soft breaking mechanism.

arXiv comment8 pages, 3 figures. v2: minor revision, to appear in PRD

References in corpus (39)

• Particle Dark Matter: Evidence, Candidates and Constraints
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• Results from a search for dark matter in the complete LUX exposure
• The Minimal Composite Higgs Model
• Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi-LAT Data
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Update on scalar singlet dark matter
• Light custodians in natural composite Higgs models
• micrOMEGAs5.0 : freeze-in
• Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
• The Composite Nambu-Goldstone Higgs
• Beyond the Minimal Composite Higgs Model
• Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment
• The Other Natural Two Higgs Doublet Model
• General Composite Higgs Models
• Dark Matter through the Higgs portal
• Composite Scalar Dark Matter
• Combination of the searches for pair-produced vector-like partners of the third-generation quarks at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• The Composite Higgs and Light Resonance Connection
• Sensitivity Projections for Dark Matter Searches with the Fermi Large Area Telescope
• $h\to \gamma \gamma$ excess and Dark Matter from Composite Higgs Models
• Composite Higgs and Dark Matter Model in SU(6)/SO(6)
• Composite Dark Matter and LHC Interplay
• Charged Composite Scalar Dark Matter
• Dark matter shifts away from direct detection
• Non-Abelian Anomalies and Effective Actions for a Homogeneous Space $G/H$
• Prospects of searching for composite resonances at the LHC and beyond
• Minimal Neutral Naturalness Model
• Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Supersymmetry with a pNGB Higgs and Partial Compositeness
• Monojet searches for momentum-dependent dark matter interactions
• A Minimal Model for Neutral Naturalness and pseudo-Nambu-Goldstone Dark Matter
• Softened Goldstone-Symmetry Breaking
• Composite dark matter phenomenology in the presence of lighter degrees of freedom
• EFTs meet Higgs Nonlinearity, Compositeness and (Neutral) Naturalness
• The Minimal Simple Composite Higgs Model
• Composite 2HDM with singlets: a viable dark matter scenario
• LHC Dark Matter Signals from Vector Resonances and Top Partners

Cited by in corpus (5)

• Collider Searches for Dark Matter through the Higgs Lens
• The Axion-Higgs Portal
• Searching for pseudo Nambu-Goldstone boson dark matter production in association with top quarks
• Holographic Composite Higgs Model Building: Soft Breaking, Maximal Symmetry, and the Higgs Mass
• Phase transition and gravitational waves in maximally symmetric composite Higgs model