Results 31 to 40 of about 1,630,167 (297)

Hierarchy in the Phase Space and Dark Matter Astronomy [PDF]

, 2009
We develop a theoretical framework for describing the hierarchical structure of the phase space of cold dark matter haloes, due to gravitationally bound substructures.
B. Jain, Edmund Bertschinger, J. A. Peacock, Niayesh Afshordi, Roya Mohayaee   +4 more
core   +2 more sources

THE DARK-MATTER WORLD: ARE THERE DARK-MATTER GALAXIES? [PDF]

International Journal of Modern Physics: Conference Series, 2012
We attempt to answer whether neutrinos and antineutrinos, such as those in the cosmic neutrino background, would clusterize among themselves or even with other dark-matter particles, under certain time span, say 1 Gyr. With neutrino masses in place, the similarity with the ordinary matter increases and so is our confidence for neutrino clustering if ...
openaire   +2 more sources

Convergent Bayesian global fits of 4D composite Higgs models

Journal of High Energy Physics, 2021
Models in which the Higgs boson is a composite pseudo-Nambu-Goldstone boson offer attractive solutions to the Higgs mass naturalness problem. We consider three such models based on the minimal SO(5) → SO(4) symmetry breaking pattern, and perform ...
Ethan Carragher, Will Handley, Daniel Murnane, Peter Stangl, Wei Su, Martin White, Anthony G. Williams   +6 more
doaj   +1 more source

Asymmetric WIMP dark matter

, 2011
In existing dark matter models with global symmetries the relic abundance of dark matter is either equal to that of anti-dark matter (thermal WIMP), or vastly larger, with essentially no remaining anti-dark matter (asymmetric dark matter).
A Belyaev, A Falkowski, A Fitzpatrick, A Sakharov, B Dutta, B Feldstein, C Kouvaris, D Hooper, D Larson, DB Kaplan, DE Kaplan, E Komatsu, E Nardi, EJ Chun, EW Kolb, G Jungman, H An, H Davoudiasl, Ian M. Shoemaker, IM Shoemaker, J Lewin, J Shelton, JA Harvey, JJ Heckman, K Agashe, K Enqvist, K Griest, K Griest, K Kohri, Luca Vecchi, M Blennow, M Drees, M Drees, Michael L. Graesser, MR Buckley, MT Frandsen, MY Khlopov, P Gondolo, P-H Gu, R Allahverdi, R Allahverdi, RJ Scherrer, S Dodelson, S Nussinov, SD Thomas, SM Barr, T Cohen, T Cohen, TA Ryttov, TR Dulaney, TR Dulaney, Z Ahmed   +51 more
core   +1 more source

Experimental identification of non-pointlike dark-matter candidates [PDF]

, 2002
We show that direct dark matter detection experiments can distinguish between pointlike and non-pointlike dark-matter candidates. The shape of the nuclear recoil energy spectrum from pointlike dark-matter particles, e.g., neutralinos, is determined by ...
A. Anisimov, A. Kusenko, A. Kusenko, Alexander Kusenko, B. Moore, E. W. Kolb, G. Rosen, Graciela Gelmini, K. Enqvist, K. Griest, M. C. Bento, P. Ullio, S. Coleman, Shmuel Nussinov, T. D. Lee, Y. Kobzarev   +15 more
core   +2 more sources

DARK MATTER, AND ITS DARKNESS [PDF]

International Journal of Modern Physics D, 2006
Assuming the validity of the general relativistic description of gravitation on astrophysical and cosmological length scales, we analytically infer that the Friedmann–Robertson–Walker cosmology with Einsteinian cosmological constant, and a vanishing spatial curvature constant, unambiguously requires a significant amount of dark matter.
openaire   +3 more sources

Black hole evaporation beyond the Standard Model of particle physics

Journal of High Energy Physics, 2023
The observation of an evaporating black hole would provide definitive information on the elementary particles present in nature. In particular, it could discover or exclude particles beyond those present in the standard model of particle physics.
Michael J. Baker, Andrea Thamm
doaj   +1 more source

Neutron stars with spin polarized self-interacting dark matter

, 2018
Dark matter, one of the important portion of the universe, could affect the visible matter in neutron stars. An important physical feature of dark matter is due to the spin of dark matter particles.
Rezaei, Zeinab
core   +1 more source

A Test of the Collisional Dark Matter Hypothesis from Cluster Lensing [PDF]

, 2000
Spergel & Steinhardt proposed the possibility that the dark matter particles are self-interacting, as a solution to two discrepancies between the predictions of cold dark matter models and the observations: first, the observed dark matter distribution in
Eke V. R., Jordi Miralda‐Escude, Kneib J. P., Kneib J. P., Lacey C., Pierre M.   +5 more
core   +2 more sources

CDMS II result and Light Higgs Boson Scenario of the MSSM

, 2010
The CDMS Collaboration has reported two candidate events for dark matter. If the events are due to the elastic scattering of dark matter, the dark matter would be a WIMP dark matter with its mass of the order of 10-100GeV and its scattering cross section
Asano, Masaki, Matsumoto, Shigeki, Senami, Masato, Sugiyama, Hiroaki   +3 more
core   +1 more source