Probing Gravitational Dark Matter

Abstract

So far all evidences of dark matter (DM) come from astrophysical and cosmological observations, due to gravitational interactions of the DM. It is possible that the true DM particle in the universe joins gravitational interactions only, but nothing else. Such a Gravitational DM (GDM) acts as a weakly interacting massive particle (WIMP), which is conceptually simple and attractive. In this work, we explore this direction by constructing the simplest scalar GDM particle ${\chi }_s$. It is a $Z_2$ odd singlet under the standard model (SM) gauge group, and naturally joins the unique dimension-4 interaction with Ricci curvature, ${\xi }_s{\chi }_s^{2}R$, where ${\xi }_s$ is the dimensionless nonminimal coupling. We demonstrate that this gravitational interaction ${\xi }_s{\chi }_s^{2}R$, together with Higgs-curvature nonminimal coupling term ${\xi }_h{H}^{†}HR$, induces effective couplings between ${\chi }_s^2$ and SM fields which can account for the observed DM thermal relic abundance. We analyze the annihilation cross sections of GDM particles and derive the viable parameter space for realizing the DM thermal relic density. We further study the direct/indirect detections and the collider signatures of such a scalar GDM. These turn out to be highly predictive and testable.

33pp, JCAP Final Version. Only minor rewordings, references added

References in corpus (34)

• 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
• Planck 2013 results. XVI. Cosmological parameters
• Observation of an anomalous positron abundance in the cosmic radiation
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• The Minimal Model of Nonbaryonic Dark Matter: A Singlet Scalar
• Constraints on Dark Matter from Colliders
• Update on scalar singlet dark matter
• Dark Matter Constraints from Observations of 25 Milky Way Satellite Galaxies with the Fermi Large Area Telescope
• Missing Energy Signatures of Dark Matter at the LHC
• First Look at the Physics Case of TLEP
• Maverick dark matter at colliders
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Search for Gamma-ray Spectral Lines with the Fermi Large Area Telescope and Dark Matter Implications
• Gauge singlet scalar as inflaton and thermal relic dark matter
• Probing dark matter couplings to top and bottom at the LHC
• Gravity-mediated (or Composite) Dark Matter
• Search for dark matter in events with heavy quarks and missing transverse momentum in $pp$ collisions with the ATLAS detector
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• The impact of heavy-quark loops on LHC dark matter searches
• Bounds on the Nonminimal Coupling of the Higgs Boson to Gravity
• Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
• Gamma ray emission in Fermi bubbles and Higgs portal dark matter
• Scales of Fermion Mass Generation and Electroweak Symmetry Breaking
• Higgs Gravitational Interaction, Weak Boson Scattering, and Higgs Inflation in Jordan and Einstein Frames
• The Equivalence Theorem And Its Radiative-Correction-Free Formulation For All R_xi Gauges
• Equivalence Theorem and Probing the Electroweak Symmetry Breaking Sector
• Proof of the Equivalence Theorem in the Chiral Lagrangian Formalism
• Gravitational Interaction of Higgs Boson and Weak Boson Scattering
• Mono-everything: combined limits on dark matter production at colliders from multiple final states
• Scales of Mass Generation for Quarks, Leptons and Majorana Neutrinos
• Erratum: Bounds on Invisible Higgs boson Decays from $t\bar{t}H$ Production
• Gamma-ray constraints on dark-matter annihilation to electroweak gauge and Higgs bosons
• Collider Bounds on Indirect Dark Matter Searches: The $WW$ Final State

Cited by in corpus (9)

• Probing New Physics of Cubic Higgs Interaction via Higgs Pair Production at Hadron Colliders
• Probing New Physics Scales from Higgs and Electroweak Observables at $e^{+}{e}^{-}$ Higgs Factory
• Dark matter decay through gravity portals
• Non-minimally Coupled Vector Boson Dark Matter
• Dark matter annihilation into leptons through gravity portals
• Observational constraints on dark matter decaying via gravity portals
• Genesis of baryon and dark matter asymmetries through ultraviolet scattering freeze-in
• Gravitational SIMPs
• Constraining Light Scalar Field with Torsion-Balance Gravity Experiments