Results 21 to 30 of about 20,356 (164)

Dark matter in the Randall-Sundrum model with non-universal coupling

open access: yesJournal of High Energy Physics, 2019
We consider simplified dark matter models (DM) interacting gravitationally with the standard model (SM) particles in a Randall-Sundrum (RS) framework. In this framework, the DM particles interact through the exchange of spin-2 Kaluza-Klein (KK) gravitons
Ashok Goyal   +2 more
doaj   +1 more source

Boosted dark matter quarrying at surface neutrino detectors

open access: yesJournal of High Energy Physics, 2018
We propose the idea of “Earth Shielding” to reject cosmic-ray backgrounds, in the search for boosted dark matter at surface neutrino detectors, resulting in the enhancement of the signal-to-background ratio.
Doojin Kim   +3 more
doaj   +1 more source

Resonance enhancement of dark matter interactions: the case for early kinetic decoupling and velocity dependent resonance width

open access: yesJournal of High Energy Physics, 2017
Motivated by the possibility of enhancing dark matter (DM) self-scattering cross-section σ self , we have revisited the issue of DM annihilation through a Breit-Wigner resonance.
M. Duch, B. Grzadkowski
doaj   +1 more source

Inflation and dark matter in the inert doublet model

open access: yesJournal of High Energy Physics, 2017
We discuss inflation and dark matter in the inert doublet model coupled non-minimally to gravity where the inert doublet is the inflaton and the neutral scalar part of the doublet is the dark matter candidate.
Sandhya Choubey, Abhass Kumar
doaj   +1 more source

Probing the pre-BBN universe with gravitational waves from cosmic strings

open access: yesJournal of High Energy Physics, 2019
Many motivated extensions of the Standard Model predict the existence of cosmic strings. Gravitational waves originating from the dynamics of the resulting cosmic string network have the ability to probe many otherwise inaccessible properties of the ...
Yanou Cui   +3 more
doaj   +1 more source

Dark matter freeze out during an early cosmological period of QCD confinement

open access: yesJournal of High Energy Physics, 2020
Standard lore states that there is tension between the need to accommodate the relic density of a weakly interacting massive particle and direct searches for dark matter.
Dillon Berger   +3 more
doaj   +1 more source

$U(1)_{B-L}$ extra-natural inflation with Standard Model on a brane [PDF]

open access: yes, 2013
The interrelation between inflationary cosmology and new physics beyond the Standard Model (SM) is studied in a $U(1)_{B-L}$ extension of the SM embedded in a (4+1)-dimensional spacetime. In the scenario we study, the inflaton arises from the Wilson loop
Furuuchi, Kazuyuki, Wu, Jackson M. S.
core   +2 more sources

Non-minimal (self-)running inflation: metric vs. Palatini formulation

open access: yesJournal of High Energy Physics, 2021
We consider a model of quartic inflation where the inflaton is coupled non-minimally to gravity and the self-induced radiative corrections to its effective potential are dominant.
Antonio Racioppi
doaj   +1 more source

Some Aspects of String Cosmology and the LHC

open access: yes, 2012
I discuss some (unconventional) aspects of String Cosmology of relevance to supersymmetric dark matter searches at the Large Hadron Collider (LHC) at CERN.
Mavromatos, Nick E.
core   +1 more source

Leading loop effects in pseudoscalar-Higgs portal dark matter

open access: yesJournal of High Energy Physics, 2019
We examine a model with a fermionic dark matter candidate having pseudoscalar interaction with the standard model particles where its direct detection elastic scattering cross section at tree level is highly suppressed. We then calculate analytically the
Karim Ghorbani, Parsa Hossein Ghorbani
doaj   +1 more source

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