Dark photon mass gev
WebIn section III, we discuss the production and decays of dark photon at e + e − colliders. In section IV, a detailed collider simulation with dark photon mass ranging from 20 GeV to … WebNov 1, 2024 · Dark photon search in the mass range between 1.5 and 3.4 GeV/c2 Full Record Cited by (9) Images (3) Related Research Abstract Using a data set of 2.93 fb -1 …
Dark photon mass gev
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WebMay 11, 2024 · We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/$c^{2}$ and set a 90% confidence level upper limit on the mixing strength of the … WebNov 10, 2024 · In conclusion, we perform a search for a dark photon in the mass range between 1.5 and 3.4 GeV/c 2, where we do not observe a significant signal. We set …
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 interaction between this new field, potential new particle content (e.g., a See more • Dark radiation – Postulated type of radiation that mediates interactions of dark matter • Fifth force – Speculative fifth fundamental force 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 very weakly couple to the known forces of … See more Direct conversion A massive dark photon candidate with kinetic mixing strength $${\displaystyle \epsilon }$$ could spontaneously convert to a Standard Model See more WebApr 8, 2024 · In this study, we investigate axion-like particle (ALP), dark photon (DP), and chameleon dark energy (DE) models for a solution to the -boson mass excess. We find that the ALP and DP interpretations have been significantly narrowed down by global electroweak fits.
WebThe mass range from 1.5 to 2.9 GeV is scanned for the dark photon candidate, and no significant signal is observed. The mass dependent upper limits at the 90% confidence level on the coupling strength parameter ϵ for a dark photon coupling with an ordinary photon vary between 1.6 ×10 -3 and 5.7 ×10 -3 . WebPseudoscalars appear frequently in particle spectra. They can be light if they appear as pseudo-Goldstone bosons from some spontaneously broken global symmetries with the decay constant f. Since any global symmetry is broken at least by quantum gravitational effects, all pseudoscalars are massive. The mass scale of a pseudoscalar is determined …
Web2 Direct detection of sub-GeV dark matter8 2.1 Scattering rate9 2.2 Interaction strength10 2.3 Kinematics11 2.4 Direct detection with bound systems13 3 Electron excitations15 3.1 Atomic systems17 3.2 Solid state systems20 4 Phonon excitations23 4.1 Introduction to phonons24 4.2 Dynamic structure factor28 4.3 Dark photon couplings31 References 34
high flowsWebDark photons are particles invoked in some extensions of the Standard Model which could account for at least part of the dark matter content of the Universe. high flow scrubberWebDark photon limits Data, plots and code for constraints on axions, axion-like particles, and dark photons ... Tests of coulomb law/photon mass. Atomic spectroscopy: limit, reference; AFM limit, reference; ... They also … how i became a gangster csfdWebTo broaden the exploration of this predicted dark matter particle, a second search was carried out considering some heavy Higgs bosons with masses ranging from 400 GeV to 3 TeV, produced either in gluon-gluon Fusion (ggF) or in Vector-Boson-Fusion (VBF) modes. high flow rate roman tub faucetWebNov 29, 2024 · Dark photons have been well motivated as strong candidates for dark force carriers and light dark matter in the sub-GeV mass range. Compared with collider experiments, fixed-target … high flow shower heads for rv\u0027sWebThe dark photon can obtain a highly suppressed mixing-induced coupling to the electromagnetic current, providing a portal through which dark photons can interact with ordinary matter. This review focuses on A ′ scenarios that are potentially accessible to accelerator-based experiments. high flow reverse osmosis systemWebJun 24, 2016 · In the low mass region, MS = (53{62:8) GeV, the main contribution to nal state radiation comes from the annihilation into two b-quarks and a photon, while in the heavy mass region the annihilation into two W gauge bosons and a photon is the dominant contribution. These results are very important to understand the visibility of the gamma … high flow rate whole house water filter