Results 51 to 60 of about 279,875 (165)

No room to hide: implications of cosmic-ray upscattering for GeV-scale dark matter

Journal of High Energy Physics, 2023
The irreducible upscattering of cold dark matter by cosmic rays opens up the intriguing possibility of detecting even light dark matter in conventional direct detection experiments or underground neutrino detectors.
James Alvey, Torsten Bringmann, Helena Kolesova   +2 more
doaj   +1 more source

Dark matter, dark energy and gravitational proprieties of antimatter

, 2008
We suggest that the eventual gravitational repulsion between matter and antimatter may be a key for understanding of the nature of dark matter and dark energy. If there is gravitational repulsion, virtual particle-antiparticle pairs in the vacuum, may be
Hajdukovic, Dragan Slavkov
core  

Low-energy radiative backgrounds in CCD-based dark-matter detectors

Journal of High Energy Physics
The reach of sub-GeV dark-matter detectors is at present severely affected by low-energy events from various origins. We present the theoretical methods to compute the single- and few-electron events that arise from secondary radiation emitted by high ...
Peizhi Du, Daniel Egaña-Ugrinovic, Rouven Essig, Mukul Sholapurkar   +3 more
doaj   +1 more source

Colour entangled orphan quarks and dark energy from cosmic QCD phase transition

, 2006
The present day astrophysical observations indicate that the universe is composed of a large amount of dark energy (DE) responsible for an accelerated expansion of the universe, along with a sizeable amount of cold dark matter (CDM), responsible for ...
Abhijit Bhattacharyya, Banerjee, Banerjee, Bikash Sinha, Chodos, Copi, Eiichi Takasugi, Ernst-Michael Ilgenfritz, Hiroshi Toki, Kirshner, Leibundgut, Peiris, Sanjay K. Ghosh, Shibaji Banerjee, Sibaji Raha, Stauffer, Tegmark, Witten, Wootters   +18 more
core   +1 more source

Wanted! Nuclear Data for Dark Matter Astrophysics [PDF]

, 2013
Astronomical observations from small galaxies to the largest scales in the universe can be consistently explained by the simple idea of dark matter. The nature of dark matter is however still unknown.
Gondolo, Paolo
core   +1 more source

Dark Matter: Introduction

, 2004
This short review was prepared as an introduction to the Royal Society's 'Dark Matter' conference. It addresses the embarrassing fact that 95% of the universe is unaccounted for.
C. S. Frenk, G. E. Kalmus, Martin J. Rees, Meszaros P., N. J. T. Smith, Roberts M. S., S. D. M. White   +6 more
core   +1 more source

Conformal freeze-in from neutrino portal

Journal of High Energy Physics
We study a scenario where a dark sector, described by a Conformal Field Theory (CFT), interacts with the Standard Model through the neutrino portal. In this setup, conformal invariance breaks below the electroweak scale, causing the theory to transition ...
Sungwoo Hong, Maxim Perelstein, Taewook Youn   +2 more
doaj   +1 more source

Higgs-portal spin-1 dark matter with parity-violating interaction

Journal of High Energy Physics
We introduce the spin-1 U(1) X gauged field X with Z 2 odd dark parity to evade the current strong constraints on kinetic mixing. Then, X becomes stable and a candidate for the dark matter. The lowest mass dimension of interaction is six, and the type is
Kimiko Yamashita
doaj   +1 more source

Multiple Dark Matter as a self-regulating mechanism for dark sector interactions

, 2012
(Abridged) Present cosmological constraints and the absence of a direct detection and identification of any dark matter particle candidate leave room to the possibility that the dark sector of the Universe be actually more complex than it is normally ...
Amendola, Amendola, Amendola, Astier, Bacon, Baldi, Baldi, Baldi, Baldi, Baldi, Bartelmann, Bean, Bertacca, Bertone, Borgani, Boyarsky, Brax, Brookfield, Caldera-Cabral, Carturan, Damour, Davis, Epstein, Farrar, Fedeli, Ferreira, Fu, Grego, Hoekstra, Hoekstra, Holder, Huey, Jenkins, Kaiser, Komatsu, Komatsu, Koyama, La Vacca, Li, Lucchin, Macciò, Mainini, Markevitch, Markevitch, Meneghetti, Navarro, Padmanabhan, Palazzo, Percival, Perlmutter, Persic, Pettorino, Preskill, Ratra, Reeves, Reid, Reiprich, Riess, Sahni, Sand, Sand, Schmidt, Schramm, Springel, Springel, Turner, Valiviita, Vikhlinin, Wetterich, Wetterich, Xia, Zwicky   +71 more
core   +1 more source

DEPFET detectors for direct detection of MeV Dark Matter particles

, 2017
The existence of dark matter is undisputed, while the nature of it is still unknown. Explaining dark matter with the existence of a new unobserved particle is among the most promising possible solutions.
Baehr, Alexander, Kluck, Holger, Ninkovic, Jelena, Schieck, Jochen, Treis, Johannes   +4 more
core   +1 more source