New stellar constraints on dark photons
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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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Possible Beyond the Standard Model Physics Motivated by Muonic Puzzles
TL;DR: In this article, the Lamb shift in muonic hydrogen is used as a signal of new physics caused by a violation of lepton universality, and the measurement at BNL differs from the standard model prediction by at least three standard deviations.
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Superradiant searches for dark photons in two stage atomic transitions
TL;DR: In this article, the effect of a background dark photon field on the dipole moment and corresponding transition rate of cold parahydrogen pumped into its first vibrational excited state by counter-propagating laser beams is calculated.
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Searching for Elusive Dark Sectors with Terrestrial and Celestial Observations
TL;DR: In this paper, the authors consider the possible existence of a SM-neutral and light dark sector coupled to the visible sector through irrelevant portal interactions, and derive the constraints set on this scenario by high and low-energy laboratory experiments and by astrophysical observations.
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Light(ly)-coupled Dark Matter in the keV Range: Freeze-In and Constraints
TL;DR: In this article, it was shown that the parameters needed to obtain the observed relic abundance from freeze-in are excluded below a few tens of keV, depending on the value of the dark gauge coupling constant for the dark photon portal model.
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.