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Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles
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arxiv 2011.05115 v2 pith:KRWPNURE submitted 2020-11-10 hep-ex
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abstract
Dark photons are hypothetical massive vector particles that could mix with ordinary photons. The simplest theoretical model is fully characterised by only two parameters: the mass of the dark photon m$_{\gamma^{\mathrm{D}}}$ and its mixing parameter with the photon, $\varepsilon$. The sensitivity of the SHiP detector is reviewed for dark photons in the mass range between 0.002 and 10 GeV. Different production mechanisms are simulated, with the dark photons decaying to pairs of visible fermions, including both leptons and quarks. Exclusion contours are presented and compared with those of past experiments. The SHiP detector is expected to have a unique sensitivity for m$_{\gamma^{\mathrm{D}}}$ ranging between 0.8 and 3.3$^{+0.2}_{-0.5}$ GeV, and $\varepsilon^2$ ranging between $10^{-11}$ and $10^{-17}$.
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Dark photons and axion-like particles at the Electron-Ion Collider in China
hep-ph 2024-12 conditional novelty 5.0 of 10
Projected EicC searches could probe dark photons from about 1 MeV to 3 GeV and photon-coupled axion-like particles from 0.1 to 5 GeV, covering parameter space not yet excluded by other experiments.
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