Results 21 to 30 of about 21,268 (194)
Probing the pre-BBN universe with gravitational waves from cosmic strings
Journal 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-in from semi-production
Journal of High Energy Physics, 2021 We study a novel dark matter production mechanism based on the freeze-in through semi-production, i.e. the inverse semi-annihilation processes. A peculiar feature of this scenario is that the production rate is suppressed by a small initial abundance of ...
Andrzej Hryczuk, Maxim Laletin
doaj +1 more source
On the evolution process of two-component dark matter in the Sun
Journal of High Energy Physics, 2018 We introduce dark matter (DM) evolution process in the Sun under a two-component DM (2DM) scenario. Both DM species χ and ξ with masses heavier than 1 GeV are considered.
Chian-Shu Chen, Yen-Hsun Lin
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WIMP cogenesis for asymmetric dark matter and the baryon asymmetry
Journal of High Energy Physics, 2020 We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freezeout.
Yanou Cui, Michael Shamma
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Boosted dark matter quarrying at surface neutrino detectors
Journal 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
Electroweak-like baryogenesis with new chiral matter
Journal of High Energy Physics, 2021 We propose a framework where a phase transition associated with a gauge symmetry breaking that occurs (not far) above the electroweak scale sets a stage for baryogenesis similar to the electroweak baryogenesis in the Standard Model.
Kohei Fujikura +3 more
doaj +1 more source
Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons [PDF]
, 2015 We investigate the relation between the annihilation of dark matter (DM) particles into lepton pairs and into 2-body final states including one or two photons.
Coogan, Adam +2 more
core +2 more sources
Disentangling mass spectra of multiple fields in cosmological collider
Journal of High Energy Physics, 2021 We study effects of multiple scalar fields (scalar isocurvatons) with the Hubble scale masses on the inflationary bispectrum in the squeezed limit, particular paying attention to the question how to disentangle mass spectra of such fields.
Shuntaro Aoki, Masahide Yamaguchi
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Displaced lepton jet signatures from self-interacting dark matter bound states
Journal of High Energy Physics, 2019 We study self-interacting dark matter signatures at the Large Hadron Collider. A light dark photon, mediating dark matter self-interactions, can bind dark matter particles to form a bound state when they are produced via a heavy pseduoscalar in pp ...
Yuhsin Tsai, Tao Xu, Hai-Bo Yu
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Loop-induced direct detection signatures from CP-violating scalar mediators
Journal of High Energy Physics, 2019 We investigate direct detection signatures of dark matter particles interacting with quarks via a light spin-0 mediator with general CP phases. Since tree-level scattering may be strongly suppressed in the non-relativistic limit, loop contributions play ...
Fatih Ertas, Felix Kahlhoefer
doaj +1 more source