Results 51 to 60 of about 4,173,231 (371)

Relaxion dark matter [PDF]

open access: yesPhysical Review D, 2019
We highlight a new connection between the Standard Model hierarchy problem and the dark matter sector. The key piece is the relaxion field, which besides scanning the Higgs mass and setting the electroweak scale, also constitutes the observed dark matter abundance of the universe. The relaxation mechanism is realized during inflation, and the necessary
Fonseca, Nayara, Morgante, Enrico
openaire   +4 more sources

Direct detection of WIMP dark matter: concepts and status [PDF]

open access: yesJournal of Physics G: Nuclear and Particle Physics, 2019
The existence of dark matter as evidenced by numerous indirect observations is one of the most important indications that there must be physics beyond the Standard Model of particle physics.
M. Schumann
semanticscholar   +1 more source

Dark Matter and Dark Energy

open access: yes, 2023
I have been working on the fundamental laws of physics for a long time. During this time, I realized that gravity does not work like Newtonian and this misleads us into Dark Matter. The relationship between distance and gravitational force varies with distance.
openaire   +7 more sources

Colored dark matter [PDF]

open access: yesPhysical Review D, 2018
We explore the possibility that Dark Matter is the lightest hadron made of two stable color octet Dirac fermions ${\cal Q}$. The cosmological DM abundance is reproduced for $M_{\cal Q}\approx 12.5$ TeV, compatibly with direct searches (the Rayleigh cross section, suppressed by $1/M_{\cal Q}^6$, is close to present bounds), indirect searches (enhanced ...
Andrea Mitridate   +5 more
openaire   +5 more sources

Convergent Bayesian global fits of 4D composite Higgs models

open access: yesJournal 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   +6 more
doaj   +1 more source

First results from the CRESST-III low-mass dark matter program [PDF]

open access: yesPhysical Review D, 2019
The CRESST experiment is a direct dark matter search which aims to measure interactions of potential dark matter particles in an earth-bound detector.
A. Abdelhameed   +48 more
semanticscholar   +1 more source

Dark matter as dark energy

open access: yesPhysics Letters B, 2003
Velocity-dependent interactions in a fundamental-string dominated universe lead quite naturally, with reasonable assumptions on initial conditions, to an accelerating expanding universe without assuming the existence of a cosmological constant. This result also holds generically for a universe dominated by moving extremal black holes, owing to a ...
Ramzi R. Khuri, Ramzi R. Khuri
openaire   +3 more sources

Results from a Search for Dark Matter in the Complete LUX Exposure. [PDF]

open access: yesPhysical Review Letters, 2016
We report constraints on spin-independent weakly interacting massive particle (WIMP)-nucleon scattering using a 3.35×10^{4}  kg day exposure of the Large Underground Xenon (LUX) experiment. A dual-phase xenon time projection chamber with 250 kg of active
D. Akerib   +100 more
semanticscholar   +1 more source

‘Excess’ of primary cosmic ray electrons

open access: yesPhysics Letters B, 2015
With the accurate cosmic ray (CR) electron and positron spectra (denoted as Φe− and Φe+, respectively) measured by AMS-02 Collaboration, the difference between the electron and positron fluxes (i.e., ΔΦ=Φe−−Φe+), dominated by the propagated primary ...
Xiang Li   +7 more
doaj   +1 more source

Black hole evaporation beyond the Standard Model of particle physics

open access: yesJournal 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

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