New stellar constraints on dark photons
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TLDR
In this article, the stellar production of vector states V within the minimal model of "dark photons" was studied and it was shown that when the Stuckelberg mass of the dark vector becomes smaller than plasma frequency, the emission rate is dominated by the production of the longitudinal modes of V, and scales as κ 2 m V 2, where κ and m V are the mixing angle with the photon and the mass of a dark state.About:
This article is published in Physics Letters B.The article was published on 2013-10-01 and is currently open access. It has received 294 citations till now. The article focuses on the topics: Dark photon & Dark state.read more
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Search for Dark Sector Physics with NA64
TL;DR: The NA64 experiment consists of two detectors which are planned to be located at the electron and muon (NA64μ) beams of the CERN SPS and start operation after the LHC long-stop 2 in 2021.
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Leak-in Dark Matter
TL;DR: In this paper, the authors introduce leak-in dark matter, a novel out-of-equilibrium origin for the dark matter (DM) in the universe, and provide a comprehensive and unified discussion of a minimal, internally-thermalized, hidden sector populated from an outofequilibrium, feeble connection to the hotter standard model (SM) sector.
Dissertation
Various Aspects of Astroparticle Physics and the Implications for Dark Matter Searches
TL;DR: In the absence of an anomaly, the authors in this paper derived limits on the dark matter annihilation cross section that disfavor thermal WIMPs below roughly 500 GeV, which is consistent with the astrophysical background prediction, if energy losses are not relevant.
Journal ArticleDOI
Search for dark sector physics with NA64
TL;DR: The NA64 experiment consists of two detectors which are planned to be located at the electron and muon (NA64$\mu$) beams of the CERN SPS and start operation after the LHC long-stop 2 in 2021.
Journal ArticleDOI
Observable signatures of dark photons from supernovae
TL;DR: In this article, it was shown that even at couplings where too few dark photons are produced in supernovae to violate the cooling bound, they can be observed directly through their decays.
References
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Two U(1)'s and Epsilon Charge Shifts
TL;DR: If new particles are gauged by a new U(1) then their electromagnetic charges may be shifted by a calculable amount as mentioned in this paper, which is the case in the case of the current article.
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A theory of dark matter
TL;DR: In this paper, the authors proposed a light boson invoked by XDM to mediate a large inelastic scattering cross section for the DAMA annual modulation signal at low velocities at redshift, which could produce observable effects on the ionization history of the universe.
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Secluded WIMP Dark Matter
TL;DR: In this article, a generic mechanism via which thermal relic WIMP dark matter may be decoupled from the Standard Model, namely through a combination of WIMPs annihilation to metastable mediators with subsequent delayed decay to Standard Model states, is considered.
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The Low-Energy Frontier of Particle Physics
Joerg Jaeckel,Andreas Ringwald +1 more
TL;DR: Most embeddings of the Standard Model into a more unified theory, in particular those based on supergravity or superstrings, predict the existence of a hidden sector of particles that have only very weak interactions with visible-sector Standard Model particles.
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WISPy cold dark matter
TL;DR: Very weakly interacting slim particles (WISPs) such as axion-like particles (ALPs) or hidden photons (HPs), may be non-thermally produced via the misalignment mechanism in the early universe and survive as a cold dark matter population until today as mentioned in this paper.