Results 21 to 30 of about 1,667,560 (344)

DARK MATTER [PDF]

open access: yesFundamental Interactions, 2007
The nature of the main constituents of the mass of the universe is one of the outstanding riddles of cosmology and astro-particle physics. Current models explaining the evolution of the universe, and measurements of the various components of its mass, all have in common that an appreciable contribution to that mass is non-luminous and non-baryonic, and
openaire   +2 more sources

Radiative muon mass models and (g − 2) μ

open access: yesJournal of High Energy Physics, 2021
Recent measurements of the Higgs-muon coupling are directly probing muon mass generation for the first time. We classify minimal models with a one-loop radiative mass mechanism and show that benchmark models are consistent with current experimental ...
Michael J. Baker   +2 more
doaj   +1 more source

Cryptobaryonic Dark Matter [PDF]

open access: yesPhysical Review Letters, 2005
It is proposed that dark matter could consist of compressed collections of atoms (or metallic matter) encapsulated into, for example, 20 cm big pieces of a different phase. The idea is based on the assumption that there exists at least one other phase of the vacuum degenerate with the usual one.
Froggatt, C. D., Nielsen, H. B.
openaire   +3 more sources

Energy-releasing Process for the 2013 May 13 X1.7 Limb Flare: A Continued Study

open access: yesThe Astrophysical Journal, 2023
In this paper, we reanalyze the X1.7 class limb flare that occurred on 2013 May 13 (SOL2013-05-13T01:56 UT), concentrating on the energy-releasing process using microwave observations mainly made by Nobeyama and X-ray observations made by RHESSI.
Jinhua Shen   +5 more
doaj   +1 more source

The Possibility of Mirror Planet as Planet Nine in the Solar System

open access: yesUniverse, 2022
A series of dynamical anomalies in the orbits of distant trans-Neptunian objects points to a new celestial body (usually named Planet Nine) in the solar system.
Pei Wang   +4 more
doaj   +1 more source

Dark Matter [PDF]

open access: yesBrazilian Journal of Physics, 2011
Abstract I give a review of the development of the concept of dark matter. The dark matter story passed through several stages from a minor observational puzzle to a major challenge for theory of elementary particles. Modern data suggest that dark matter is the dominant matter component in the Universe, and that it consists of some ...
openaire   +6 more sources

Turning off the Lights: How Dark is Dark Matter? [PDF]

open access: yes, 2010
We consider current observational constraints on the electromagnetic charge of dark matter. The velocity dependence of the scattering cross-section through the photon gives rise to qualitatively different constraints than standard dark matter scattering ...
E. W. Kolb   +4 more
core   +3 more sources

A real triplet-singlet extended Standard Model: dark matter and collider phenomenology

open access: yesJournal of High Energy Physics, 2021
We examine the collider and dark matter phenomenology of the Standard Model extended by a hypercharge-zero SU(2) triplet scalar and gauge singlet scalar.
Nicole F. Bell   +4 more
doaj   +1 more source

Evolution of the Dark Matter Distribution at the Galactic Center [PDF]

open access: yes, 2003
Annihilation radiation from neutralino dark matter at the Galactic center (GC) would be greatly enhanced if the dark matter were strongly clustered around the supermassive black hole (SBH).
David Merritt   +5 more
core   +3 more sources

An r−process macronova/kilonova in GRB 060614: evidence for the merger of a neutron star-black hole binary

open access: yesEPJ Web of Conferences, 2016
After the jet break at t ~ 1.4 days, the optical afterglow emission of the long-short burst GRB 060614 can be divided into two components. One is the power-law decaying forward shock afterglow emission.
Jin Zhi-Ping, Fan Yi-Zhong, Wei Da-Ming
doaj   +1 more source

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