Results 21 to 30 of about 945 (139)
Gravitational production of vector dark matter
Journal of High Energy Physics, 2020 A model of vector dark matter that communicates with the Standard Model only through gravitational interactions has been investigated. It has been shown in detail how does the canonical quantization of the vector field in varying FLRW geometry implies a ...
Aqeel Ahmed +2 more
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Electroweak phase transition and gravitational waves in a two-component dark matter model
Journal of High Energy Physics, 2022 We investigate an extension of the Standard Model (SM) with two candidates for dark matter (DM). One of them is a real scalar field and the other is an Abelian gauge field.
Ahmad Mohamadnejad
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Baryonic Higgs and dark matter
Journal of High Energy Physics, 2021 We discuss the correlation between dark matter and Higgs decays in gauge theories where the dark matter is predicted from anomaly cancellation. In these theories, the Higgs responsible for the breaking of the gauge symmetry generates the mass for the ...
Pavel Fileviez Pérez +2 more
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Journal of High Energy Physics, 2020 Recently, the XENON1T collaboration reported an excess in the electron recoil energy spectrum. One of the simplest new physics interpretation is a new neutrino-electron interaction mediated by a light vector particle.
Masahiro Ibe +3 more
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When freeze-out occurs due to a non-Boltzmann suppression: a study of degenerate dark sector
Journal of High Energy Physics, 2021 Exponential suppression or commonly known as the Boltzmann suppression in the number density of dark matter is the key ingredient for creating chemical imbalance prior to the usual thermal freeze-out.
Anirban Biswas +2 more
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Simplified dark matter models in the light of AMS-02 antiproton data
Journal of High Energy Physics, 2017 In this work we perform an analysis of the recent AMS-02 antiproton flux and the antiproton-to-proton ratio in the framework of simplified dark matter models.
Tong Li
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Light Dark Matter from Entropy Dilution
Journal of High Energy Physics, 2020 We show that a thermal relic which decouples from the standard model (SM) plasma while relativistic can be a viable dark matter (DM) candidate, if the decoupling is followed by a period of entropy dilution that heats up the SM, but not the dark sector ...
Jared A. Evans +4 more
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Minimal models for dark matter and the muon g − 2 anomaly
Journal of High Energy Physics, 2018 We construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the
Lorenzo Calibbi +2 more
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Unitarity limits on thermal dark matter in (non-)standard cosmologies
Journal of High Energy Physics, 2021 Using the upper bound on the inelastic reaction cross-section implied by S-matrix unitarity, we derive the thermally averaged maximum dark matter (DM) annihilation rate for general k → 2 number-changing reactions, with k ≥ 2, taking place either entirely
Disha Bhatia, Satyanarayan Mukhopadhyay
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Journal of High Energy Physics, 2018 New decay channels for the neutron into dark matter plus other particles have been suggested for explaining a long-standing discrepancy between the neutron lifetime measured from trapped neutrons versus those decaying in flight.
James M. Cline, Jonathan M. Cornell
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