Dark matter self-interactions from spin-2 mediators

  title={Dark matter self-interactions from spin-2 mediators},
  author={Yoo-Jin Kang and Hyun Min Lee},
  journal={The European Physical Journal C},
We propose a new mechanism for rendering dark matter self-interacting in the presence of a massive spin-2 mediator. The derived Yukawa-type potential for dark matter is independent of the spins of dark matter in the leading order of the momentum expansion, so are the resulting non-perturbative effects for the dark matter self-scattering. We find that both the Born cross section and relatively mild resonance effects assist to make the self-scattering cross section velocity-dependent. We discuss… 
9 Citations
Effective theory for self-interacting dark matter and massive spin-2 mediators
We consider the effective theory for self-interacting dark matter with arbitrary spin and go beyond the previous discussion in the literature by introducing a massive spin-2 particle as the mediator
Impact of Higgs portal on gravity-mediated production of superheavy dark matter
In the so-called Planckian Interacting Dark Matter (PIDM) scenario, superheavy dark matter particles are produced after inflation by gravity-mediated interactions through the freeze-in mechanism. In
Kaluza-Klein FIMP dark matter in warped extra-dimensions
We study for the first time the case in which Dark Matter (DM) is made of Feebly Interacting Massive Particles (FIMP) interacting just gravitationally with the standard model particles in an
Gravitational SIMPs
We study the impact of thermalization and number-changing processes in the dark sector on the yield of gravitationally produced dark matter (DM). We take into account the DM production through the
Dark matter and leptogenesis from gravitational production
Since the gravitational interaction is universal, any particle that ever existed, if kinematically accessible, has to be produced through her. We explore the possibility that dark matter is generated
Non-minimally coupled vector boson dark matter
We consider a simple abelian vector dark matter (DM) model, where only the DM (X̃μ) couples non-minimally to the scalar curvature (R̃) of the background spacetime via an operator of the form ∼X̃μ X̃μ
Interplay between neutrino and gravity portals for FIMP dark matter
In the classic type I seesaw mechanism with very heavy right-handed (RH) neutrinos, it is possible to account for dark matter via RH neutrino portal couplings to a feebly interacting massive particle
FIMP Dark Matter in Clockwork/Linear Dilaton extra-dimensions
We study the possibility that Dark Matter (DM) is made of Feebly Interacting Massive Particles (FIMP) interacting just gravitationally with the Standard Model particles in the framework of a


Lightening gravity-mediated dark matter
We revisit the scenario of a massive spin-2 particle as the mediator for communicating between dark matter of arbitrary spin and the Standard Model. Taking the general couplings of the spin-2
Strong Constraints on Self-Interacting Dark Matter with Light Mediators.
It is pointed out that in such models the dark matter annihilation rate is generically enhanced by the Sommerfeld effect, and the resulting constraints from the cosmic microwave background and other indirect detection probes are derived.
Dark matter self-interactions from a general spin-0 mediator
Dark matter particles interacting via the exchange of very light spin-0 mediators can have large self-interaction rates and obtain their relic abundance from thermal freeze-out. At the same time,
Dark matter direct detection from new interactions in models with spin-two mediators
A bstractWe consider models where a massive spin-two resonance acts as the mediator between Dark Matter (DM) and the SM particles through the energy-momentum tensor. We examine the effective theory
Systematizing the effective theory of self-interacting dark matter
If dark matter has strong self-interactions, future astrophysical and cosmological observations, together with a clearer understanding of baryonic feedback effects, might be used to extract the
Gravity-mediated (or composite) Dark Matter confronts astrophysical data
A bstractWe consider the astrophysical bounds on a new form of dark matter, the so called Gravity-mediated Dark Matter. In this scenario, dark matter communicates with us through a mediator sector
Velocity Dependence from Resonant Self-Interacting Dark Matter.
It is shown that resonant self-interacting dark matter can naturally explain such a behavior, and that this does not require a light mediator.
Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
Dark matter (DM) self-interactions have important implications for the formation and evolution of structure, from dwarf galaxies to clusters of galaxies. We study the dynamics of self-interacting DM
Gravity-mediated (or composite) dark matter
Dark matter could have an electroweak origin, yet it could communicate with the visible sector exclusively through gravitational interactions. In a setup addressing the hierarchy problem, we propose
Exotic spin-dependent forces from a hidden sector
New dynamics from hidden sectors may manifest as long-range forces between visible matter particles. The well-known case of Yukawa-like potentials occurs via the exchange of a single virtual