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Related Experiment Video

Updated: Mar 11, 2026

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Codecaying Dark Matter.

Jeff Asaf Dror¹, Eric Kuflik¹, Wee Hao Ng¹

¹Laboratory for Elementary Particle Physics, Cornell University, Ithaca, New York 14850, USA.

Physical Review Letters

|December 3, 2016

Summary

This summary is machine-generated.

Codecaying dark matter offers a new freeze-out mechanism. Nearly degenerate particles decay, exponentially depleting dark matter density to achieve the observed relic abundance.

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Area of Science:

Cosmology
Particle Physics
Astrophysics

Background:

The standard thermal freeze-out mechanism for dark matter relies on Boltzmann suppression.
Understanding dark matter's origin and properties is crucial for cosmology and particle physics.

Purpose of the Study:

To propose a novel mechanism for thermal dark matter freeze-out.
To explore the implications of multicomponent dark sectors with nearly degenerate particles.

Main Methods:

Introducing the codecaying dark matter mechanism.
Analyzing the exponential depletion of dark matter density via particle decay.
Investigating the role of annihilation cross-sections and decay rates in setting relic abundance.

Main Results:

Codecaying dark matter achieves observed relic density through exponential depletion, not Boltzmann suppression.
The mechanism predicts a boosted dark matter annihilation cross-section.
A viable parameter space exists for codecaying dark matter, with enhanced indirect detection signals.

Conclusions:

Codecaying dark matter provides a new paradigm for dark matter relic abundance.
The mechanism is consistent with a broad range of dark matter parameters.
Enhanced indirect detection signals offer a promising avenue for experimental verification.