On the temperature evolution of multicomponent dark matter with Coulomb-like interaction

Belotsky, K. M.; Esipova, E. A.; Кириллов, А. А.

doi:10.1088/1742-6596/675/1/012017

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our goal is to demonstrate that using given simple criterion Eq.14 allows obtaining stronger constraint in some parameter regions as compared to existing ones. The moment of DM decoupling from baryonic matter can be defined by equation of SIMPs temperature evolution [52] dT…”

Section: Generic Constraintmentioning

confidence: 99%

Indirect effects of dark matter

Belotskiy

Esipova

Kamaletdinov

et al. 2019

Int. J. Mod. Phys. D

View full text Add to dashboard Cite

Here we briefly review possible indirect effects of dark matter (DM) of the Universe. It includes effects in cosmic rays (CR): first of all, the positron excess at ∼ 500 GeV and possible electron-positron excess at 1-1.5 TeV. We tell that the main and least model-dependent constraint on such possible interpretation of CR effects goes from gamma-ray background. Even ordinary e + e − mode of DM decay or annihilation produces prompt photons (FSR) so much that it leads to contradiction with data on cosmic gamma-rays. We present our attempts to possibly avoid gamma-ray constraint. They concern peculiarities of both space distribution of DM and their physics. The latter involves complications of decay/annihilation modes of DM, modifications of Lagrangian of DM-ordinary matter interaction, and inclusion of mode with identical fermions in final state. In this way, no possibilities to suppress were found yet except, possibly, mode with identical fermions. While the case of spatial distribution variation allows achieving consistency between different data. Also we consider stable form of dark matter which can interact with baryons. We show which constraint such DM candidate can get from damping effect in plasma during large scale structure formation in comparison with other existing constraints.

show abstract

Section: Generic Constraintmentioning

confidence: 99%