http://dpnc.unige.ch/~mermod/Teaching/LLPs/MermodLLP_3.1.pdf WebFeb 1, 2024 · Ipair numerically equals the branching ratio related to the internal pair production or the internal pair production intensity; • Q511 is the number of 511 keV …

1– THE MUON ANOMALOUS MAGNETIC MOMENT

WebS~, with gyromagnetic ratio g µ = 2. Quantum loop effects lead to a small calculable deviation from g µ = 2, parameterized by the anomalous magnetic moment a µ ≡ g µ −2 2. (1) That quantity can be accurately measured and, within the Standard Model (SM) framework, precisely predicted. Hence, comparison of experiment and theory tests the ... 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 can hdpe pipe be heat traced

Dark photon - Wikipedia

WebApr 1, 2024 · Dark matter particles that annihilate into neutrinos will also inevitably branch into electromagnetic final states through higher-order tree and loop diagrams that give … http://128.84.4.18/pdf/2005.01515 Webto SM photon would occur through loops of heavy dark particles, charged under both electroweak and dark inter-actions, giving rise to a very weak mixing strength defined as the ratio of dark and fine structure coupling constants (ε2 =α/α<10−2). Moreover, the dark photon (re-ferred to also as U, A or γ) should get mass by means of fite law group phoenix