Results 31 to 40 of about 279,875 (165)
Dark matter annihilation at the galactic center [PDF]
, 1999 If cold dark matter is present at the galactic center, as in current models of the dark halo, it is accreted by the central black hole into a dense spike.
A. Eckart +24 more
core +2 more sources
Enhancement of p-wave dark matter annihilation by quasi-bound states
Journal of High Energy PhysicsWe scrutinize the Sommerfeld enhancement in dark matter pair annihilation for p-wave and higher-ℓ partial waves. For the Yukawa potential these feature a super-resonant Breit-Wigner peak in their velocity-dependence close to Sommerfeld resonances as well
Martin Beneke +3 more
doaj +1 more source
Higgs portal dark matter freeze-in at stronger coupling: observational benchmarks
Journal of High Energy PhysicsWe study freeze-in production of Higgs portal dark matter (DM) at temperatures far below the dark matter mass. The temperature of the Standard Model (SM) thermal bath may have never been high such that dark matter production via thermal emission has been
Giorgio Arcadi +3 more
doaj +1 more source
IceCube: The Cubic Kilometer Neutrino Telescope at the South Pole
, 2004 Search for ultra high-energy neutrino induced reactions, as part of a comprehensive probe of the neutrino sky and also investigation of the particle nature of the dark matter, with unique sensitivity to cold dark matter particles are described.
Fazely, A. R.
core +1 more source
The quintuplet annihilation spectrum
Journal of High Energy PhysicsWe extend the Effective Field Theory of Heavy Dark Matter to arbitrary odd representations of SU(2) and incorporate the effects of bound states. This formalism is then deployed to compute the gamma-ray spectrum for a 5 of SU(2): quintuplet dark matter ...
Matthew Baumgart +3 more
doaj +1 more source
Warm dark matter from a gravitational freeze-in in extra dimensions
Journal of High Energy Physics, 2023 We study the freeze-in of gravitationally interacting dark matter in extra dimensions. Focusing on a minimal dark matter candidate that only interacts with the SM via gravity in a five-dimensional model we find that a large range of dark matter and ...
A. de Giorgi, S. Vogl
doaj +1 more source
Earth-mass dark-matter haloes as the first structures in the early Universe
, 2005 The Universe was nearly smooth and homogeneous before a redshift of z = 100, about 20 million years after the Big Bang. After this epoch, the tiny fluctuations imprinted upon the matter distribution during the initial expansion began to collapse because ...
Diemand, Juerg +2 more
core +1 more source
An asymmetric SIMP dark matter model
Journal of High Energy Physics, 2022 In this paper, we construct the first asymmetric strongly interacting massive particles (SIMP) dark matter (DM) model, where a new vector-like fermion and a new complex scalar both having nonzero chemical potentials can be asymmetric DM particles.
Shu-Yu Ho
doaj +1 more source
Constraining scalar fields with stellar kinematics and collisional dark matter
, 2010 The existence and detection of scalar fields could provide solutions to long-standing puzzles about the nature of dark matter, the dark compact objects at the centre of most galaxies, and other phenomena.
A. Bernal +27 more
core +1 more source
Indirect search for dark matter with AMS [PDF]
, 2005 This document summarises the potential of AMS in the indirect search for Dark Matter. Observations and cosmology indicate that the Universe may include a large amount of Dark Matter of unknown nature.
Goy, C.
core +1 more source