Dark photon branch ratio
WebIn a fixed target experiment dark photons can be generated by bremsstrahlung of scattering protons, in analogy with the ordinary photon bremmstrahlung. Consider a protonbeamwithinitialmomentumandenergy P andE prespectively. LetE 0andp betheenergyandmomentumofthegenerateddarkphoton. 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.
Dark photon branch ratio
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WebWe show that dark photons (A′) with masses ∼10−80MeV can be probed in the decay μ+→e+νe¯νμA′, A′→e+e−, with the upcoming Mu3e experiment at the Paul Scherrer Institute (PSI) in Switzerland. With an expected 1015 (5.5×1016) muon decays in 2015–2016 (2024 and beyond), Mu3e has the exciting opportunity to probe a substantial … 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
WebBranching Ratio Tables In "Illuminating Dark Photons with High-Energy Colliders" (Curtin, Essig, Gori, Shelton, arXiv:1412.0018 ) we compute the dark photon total width and … WebOct 24, 2024 · In this second run of the experiment, we measured the radiative decay branching ratio in the energy range of 14 keV to 782 keV with a total uncertainty of 5 % …
Webdark photon decays. The keys to improving sensitivity include increasing the luminosity and improvingthemassresolution(whichwoulddecreasetheeffectivebackgroundyields),bothof … WebApr 11, 2024 · dark photon. In this paper, we study experimental and theoretical constraints on an extensive set of mediator models. We show that these constraints limit the Higgs branching ratio to a photon and a dark photon to be far smaller than the current sensitivity of collider searches. I. INTRODUCTION The dark photon is a hypothetical Abelian …
WebSep 20, 2024 · As conventional dark matter scenarios have been probed extensively so far, the physics of a light dark matter charged under a new gauge group (dark gauge group) becomes one of new research...
WebApr 18, 2024 · Photon-Dark Photon Conversions in Background Electromagnetic Fields. The mixing of photons with light pseudoscalars in the presence of external … chillzanne bowl pampered chefWebDec 10, 2011 · The ratio of the probabilities of the two decays is proportional to the bottom quark mass, divided by the electron mass, squared (and then multiplied by 3, because of the properties of the strong nuclear force), giving 3 (m bottom / m electron) 2 = 200,000,000 or so That’s a big number! chillz by the classic kitchenWebFigure 6 (a, left and b, right): Minimum branching ratio of Higgs to dark photons detectable by the ILC SiDfor a range of dark photon lifetimes and masses, assuming 100% … chillyz old traffordWebOct 31, 2024 · Centre Authors: Dolan, M., Volkas, R., Hiskens, F. grade 12 trigonometry study notes pdfWebOct 1, 2013 · Finally, for a finite size thermal system, the radiation power into the dark photons can be written as (27) P = ∫ d V ∫ d ω ( κ T 2 ω d Γ T prod d ω d V + κ L 2 ω d Γ L prod d ω d V). In the next section, we use (27) to calculate the V -emission rate as a function of m V. 4. Solar luminosity and horizontal branch stars constraints on dark vectors chillz clear iceWebMay 4, 2024 · We explain how the dark photon enters laboratory, astrophysical and cosmological observations as well as dark matter physics. We survey the current and … chillz coffeeWeb128.84.4.18 grade 13 resource book