Results 11 to 20 of about 20,902 (149)
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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Direct detection of atomic dark matter in white dwarfs
Journal of High Energy Physics, 2021 Dark matter could have a dissipative asymmetric subcomponent in the form of atomic dark matter (aDM). This arises in many scenarios of dark complexity, and is a prediction of neutral naturalness, such as the Mirror Twin Higgs model. We show for the first
David Curtin, Jack Setford
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Non-perturbative reheating and Nnaturalness
Journal of High Energy Physics, 2017 We study models in which reheating happens only through non-perturbative processes. The energy transferred can be exponentially suppressed unless the inflaton is coupled to a particle with a parametrically small mass. Additionally, in some models a light
Edward Hardy
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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
Journal of High Energy Physics, 2019 Conventional approaches to probing axions and axion-like particles (ALPs) typically rely on a coupling to photons. However, if this coupling is extremely weak, ALPs become invisible and are effectively decoupled from the Standard Model. Here we show that
Camila S. Machado +3 more
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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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Stringy Effects During Inflation and Reheating [PDF]
, 2005 We consider inflationary cosmology in the context of string compactifications with multiple throats. In scenarios where the warping differs significantly between throats, string and Kaluza-Klein physics can generate potentially observable corrections to ...
A. Vilenkin +6 more
core +3 more sources
Unification and Local Baryon Number
, 2017 We investigate the possibility to find an ultraviolet completion of the simple extensions of the Standard Model where baryon number is a local symmetry.
Ohmer, Sebastian, Perez, Pavel Fileviez
core +4 more sources
Cosmological constraints on deviations from Lorentz invariance in gravity and dark matter [PDF]
, 2014 We consider a scenario where local Lorentz invariance is violated by the existence of a preferred time direction at every space-time point. This scenario can arise in the context of quantum gravity and its description at low energies contains a unit time-
Audren, B. +4 more
core +3 more sources
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
doaj +1 more source