Results 21 to 30 of about 137,955 (315)

Multi-component dark sectors: symmetries, asymmetries and conversions

Journal of High Energy Physics, 2022
We study the relic abundance of several stable particles from a generic dark sector, including the possible presence of dark asymmetries. After discussing the different possibilities for stabilising multi-component dark matter, we analyse the final relic
Arnau Bas i Beneito, Juan Herrero-García, Drona Vatsyayan   +2 more
doaj   +1 more source

Dark magnetic dipole property in fermionic absorption by nucleus and electrons

Journal of High Energy Physics, 2022
The fermionic dark matter (DM) absorption by nucleus or electron targets provides a distinctive signal to search for sub-GeV DM. We consider a Dirac fermion DM charged under a dark gauge group and with the dark magnetic dipole operator.
Tong Li, Jiajun Liao, Rui-Jia Zhang
doaj   +1 more source

Anomaly-free dark matter models are not so simple [PDF]

, 2017
A bstractWe explore the anomaly-cancellation constraints on simplified dark matter (DM) models with an extra U(1)′ gauge boson Z′. We show that, if the Standard Model (SM) fermions are supplemented by a single DM fermion χ that is a singlet of the SM ...
J. Ellis, M. Fairbairn, P. Tunney
semanticscholar   +1 more source

IceCube at the frontier of macroscopic dark matter direct detection

Journal of High Energy Physics, 2022
For a class of macroscopic dark matter models, inelastic scattering of dark matter off a nucleus can generate electromagnetic signatures with GeV-scale energy.
Yang Bai, Joshua Berger, Mrunal Korwar
doaj   +1 more source

Dark matter models and direct detection

Proceedings of Theoretical Advanced Study Institute Summer School 2018 "Theory in an Era of Data" — PoS(TASI2018), 2019
These lectures provide an introduction to models and direct detection of dark matter. We summarize the general features and motivations for candidates in the full dark matter mass range, and then restrict to the keV-TeV mass window.
Tongyan Lin
semanticscholar   +1 more source

Brief History of Ultra-light Scalar Dark Matter Models [PDF]

, 2017
This is a review on the brief history of the scalar field dark matter model also known as fuzzy dark matter, BEC dark matter, wave dark matter, or ultra-light axion.
Jae-weon Lee
semanticscholar   +1 more source

Ultra-light dark matter [PDF]

The Astronomy and Astrophysics Review, 2020
Ultra-light dark matter is a class of dark matter models (DM), where DM is composed by bosons with masses ranging from $$10^{-24}\, \mathrm {eV}< m < \mathrm {eV}$$ 10 - 24 eV < m < eV . These models have been receiving a lot of attention in the past few
Elisa G. M. Ferreira
semanticscholar   +1 more source

Black holes and gravitational waves in models of minicharged dark matter [PDF]

Journal of Cosmology and Astroparticle Physics, 2016
In viable models of minicharged dark matter, astrophysical black holes might be charged under a hidden U(1) symmetry and are formally described by the same Kerr-Newman solution of Einstein-Maxwell theory.
V. Cardoso, C. F. Macedo, P. Pani, V. Ferrari   +3 more
semanticscholar   +1 more source

SIMPly add a dark photon

Journal of High Energy Physics, 2023
Pions of a dark sector gauge group can be strongly interacting massive particle (SIMP) dark matter, produced by the freeze-out of 3 → 2 interactions, with naturally large self-interactions. We study if adding a dark photon to the set-up can do it all: i)
Pieter Braat, Marieke Postma
doaj   +1 more source

WIMP and FIMP dark matter in singlet-triplet fermionic model

Journal of High Energy Physics, 2022
We present an extension of the SM involving three triplet fermions, one triplet scalar and one singlet fermion, which can explain both neutrino masses and dark matter.
Geneviève Bélanger, Sandhya Choubey, Rohini M. Godbole, Sarif Khan, Manimala Mitra, Abhishek Roy   +5 more
doaj   +1 more source