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Dark photons and axion-like particles at the Electron-Ion Collider in China
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Dark photons and axion-like particles at the Electron-Ion Collider in China
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The Electron-Ion Collider in China (EicC), a proposed high-luminosity facility with advanced charged particle and photon detection capabilities, provides unique opportunities to uncover new physics beyond the Standard Model. We analyze its sensitivity to dark photons produced through electron bremsstrahlung in coherent scattering. Thanks to its beam energy settings, it has the potential to comprehensively probe the previously unexplored parameter space between the constraints from meson decays and beam dumps below $\mathcal{O}(1)$ GeV with displaced-vertex search. Additionally, the EicC has the potential to probe axion-like particles (ALPs) in the mass range $ 0.1 \, \text{GeV} \lesssim m_a \lesssim 5 \, \text{GeV} $, with a coupling reach of $ \Lambda \lesssim 10^6 \, \text{GeV} $ , by combining the prompt-decay and displaced-vertex searches. The projected sensitivities to ALPs exceed the current bounds.
Forward citations
Cited by 2 Pith papers
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On Exclusive Coherent Production of Bosons in Electron-Proton Collisions
A phenomenological 2-to-3 framework is constructed for exclusive boson electroproduction that matches flux-factorized predictions near Q^{2}=0 while capturing finite-Q^{2} effects at larger virtualities.
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Braking protons at the EIC: from invisible meson decay to new physics searches
The EIC can probe invisible pseudoscalar meson decays down to branching ratios of 10^{-8} and invisibly decaying ALPs with couplings up to 10^5 GeV for masses 0.1-2 GeV.
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