Dark matter relic abundance beyond kinetic equilibrium

@article{Binder2021DarkMR,
  title={Dark matter relic abundance beyond kinetic equilibrium},
  author={Tobias Binder and Torsten Bringmann and Michael Gustafsson and Andrzej Hryczuk},
  journal={The European Physical Journal C},
  year={2021}
}
We introduce , a numerical precision tool for predicting the dark matter relic abundance also in situations where the standard assumption of kinetic equilibrium during the freeze-out process may not be satisfied. comes with a set of three dedicated Boltzmann equation solvers that implement, respectively, the traditionally adopted equation for the dark matter number density, fluid-like equations that couple the evolution of number density and velocity dispersion, and a full numerical evolution… 

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References

SHOWING 1-10 OF 79 REFERENCES

When freeze-out occurs due to a non-Boltzmann suppression: a study of degenerate dark sector

Exponential suppression or commonly known as the Boltzmann suppression in the number density of dark matter is the key ingredient for creating chemical imbalance prior to the usual thermal

New Pathways to the Relic Abundance of Vector-Portal Dark Matter.

We fully explore the thermal freezeout histories of a vector-portal dark matter model, in the region of parameter space in which the ratio of masses of the dark photon $A^{\prime}$ and dark matter

Precise WIMP dark matter abundance and Standard Model thermodynamics

A weakly interacting massive particle (WIMP) is a leading candidate of the dark matter. The WIMP dark matter abundance is determined by the freeze-out mechanism. Once we know the property of the WIMP

Effect of the early kinetic decoupling in a fermionic dark matter model

  • T. Abe
  • Physics
    Physical Review D
  • 2020
We study the effect of the early kinetic decoupling in a model of fermionic dark matter (DM) that interacts with the standard model particles only by exchanging the Higgs boson. There are two

Coscattering in next-to-minimal dark matter and split supersymmetry

In some models of thermal relic dark matter, the relic abundance may be set by inelastic scattering processes (rather than annihilations) becoming inefficient as the universe cools down. This effect

Precision calculations of dark matter relic abundance

The dark matter annihilation channels sometimes involve sharp resonances. In such cases the usual momentum averaged approximations for computing the DM abundance may not be accurate. We develop an

Global analysis of dark matter simplified models with leptophobic spin-one mediators using MasterCode

We report the results of a global analysis of dark matter simplified models (DMSMs) with leptophobic mediator particles of spin one, considering the cases of both vector and axial-vector

Kinetic theory in the expanding universe

Preface 1. Tools: relativity 2. Tools: cosmodynamics 3. Tools: kinetic theory 4. The canonical example 5. The generalized Lee-Weinberg problem: background 6. The generalized Lee-Weinberg problem:
...