Results 11 to 20 of about 942 (138)
Unification of the standard model and dark matter sectors in [SU(5) × U(1)]4
Journal of High Energy Physics, 2019 A simple model of dark matter contains a light Dirac field charged under a hidden U(1) gauge symmetry. When a chiral matter content in a strong dynamics satisfies the t’Hooft anomaly matching condition, a massless baryon is a natural candidate of the ...
Ayuki Kamada +2 more
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Dark matter from a complex scalar singlet: the role of dark CP and other discrete symmetries
Journal of High Energy Physics, 2021 We study the case of a pseudo-scalar dark matter candidate which emerges from a complex scalar singlet, charged under a global U(1) symmetry, which is broken both explicitly and spontaneously.
Leonardo Coito +3 more
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Non-minimal (self-)running inflation: metric vs. Palatini formulation
Journal 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
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Reheating neutron stars with the annihilation of self-interacting dark matter
Journal of High Energy Physics, 2018 Compact stellar objects such as neutron stars (NS) are ideal places for capturing dark matter (DM) particles. We study the effect of self-interacting DM (SIDM) captured by nearby NS that can reheat it to an appreciated surface temperature through ...
Chian-Shu Chen, Yen-Hsun Lin
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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
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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
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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
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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
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