The dawn of FIMP Dark Matter : A review of models and constraints

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Bernal , N , Heikinheimo , M , Tenkanen , T , Tuominen , K & Vaskonen , V 2017 , ' The dawn of FIMP Dark Matter : A review of models and constraints ' , International Journal of Modern Physics A , vol. 32 , no. 27 , 1730023 . https://doi.org/10.1142/S0217751X1730023X

Title: The dawn of FIMP Dark Matter : A review of models and constraints
Author: Bernal, Nicolas; Heikinheimo, Matti; Tenkanen, Tommi; Tuominen, Kimmo; Vaskonen, Ville
Contributor organization: Helsinki Institute of Physics
Teachers' Academy
Date: 2017-09-30
Language: eng
Number of pages: 50
Belongs to series: International Journal of Modern Physics A
ISSN: 0217-751X
DOI: https://doi.org/10.1142/S0217751X1730023X
URI: http://hdl.handle.net/10138/307668
Abstract: We present an overview of scenarios where the observed Dark Matter (DM) abundance consists of Feebly Interacting Massive Particles (FIMPs), produced nonthermally by the so-called freeze-in mechanism. In contrast to the usual freeze-out scenario, frozen-in FIMP DM interacts very weakly with the particles in the visible sector and never attained thermal equilibrium with the baryon-photon fluid in the early Universe. Instead of being determined by its annihilation strength, the DM abundance depends on the decay and annihilation strengths of particles in equilibrium with the baryon-photon fluid, as well as couplings in the DM sector. This makes frozen-in DM very difficult but not impossible to test. In this review, we present the freeze-in mechanism and its variations considered in the literature (dark freeze-out and reannihilation), compare them to the standard DM freeze-out scenario, discuss several aspects of model building, and pay particular attention to observational properties and general testability of such feebly interacting DM.
Subject: Dark matter
FIMP
freeze-in
early Universe
models beyond the Standard Model
3.5 KEV LINE
GALAXY CLUSTER 1E-0657-56
INTERACTION CROSS-SECTION
LOW SCALE LEPTOGENESIS
PHOTON IMAGING CAMERA
MILKY-WAY
COSMOLOGICAL SIMULATIONS
SELF-INTERACTIONS
DWARF GALAXIES
ATLAS DETECTOR
114 Physical sciences
Peer reviewed: Yes
Rights: other
Usage restriction: openAccess
Self-archived version: acceptedVersion


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