WebNov 10, 2014 · The presence of the dark photon would be indicated by the appearance of an unexpected peak in the total mass of its decay products above smooth backgrounds. Dark photons may be expected to decay in these ways if there are no lighter dark matter particles, but the researchers discovered no evidence for peaks in the energy range … WebApr 9, 2024 · For the branching ratio to this channel to be realistically observable at the LHC, there must exist new mediators that interact with both the standard model and the dark photon. In this paper, we study experimental and theoretical constraints on an extensive set of mediator models.
Search for the dark photon in B 0 → A′A′, A′ → e + e −, μ + μ −, …
WebMay 23, 2024 · We find that the branching ratio of the Higgs boson to a photon and a dark photon is constrained to be far smaller than the sensitivity of current collider searches, … The experiment has excluded dark photon candidates with mass centered around 24.86 μeV and by using a superconducting qubit to repeatedly measure the same photon. This has enabled a search speed up of over 1,000 as compared to the conventional linear amplification technique. See more The dark photon (also hidden, heavy, para-, or secluded photon) is a hypothetical hidden sector particle, proposed as a force carrier similar to the photon of electromagnetism but potentially connected to See more Adding a sector containing dark photons to the Lagrangian of the Standard Model can be done in a straightforward and minimal way by introducing a new U(1) gauge field. The specifics of the … See more • Dark radiation – Postulated type of radiation that mediates interactions of dark matter • Fifth force – Speculative fifth fundamental force • Dual photon – Hypothetical particle dual to the photon See more Observations of gravitational effects that cannot be explained by visible matter alone imply the existence of matter which does not or does only … See more Direct conversion A massive dark photon candidate with kinetic mixing strength $${\displaystyle \epsilon }$$ could spontaneously convert to a Standard Model photon. A cavity, with resonant frequency tuned to match the mass of a dark … See more images of small garden sheds
cosmology - Baryon / photon ratio - Physics Stack Exchange
Web128.84.4.18 http://128.84.4.18/pdf/2005.01515 WebApr 18, 2024 · Photon-Dark Photon Conversions in Background Electromagnetic Fields. The mixing of photons with light pseudoscalars in the presence of external … images of small grooming salons