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The LHC experiments have been optimised for the discovery of hypothetical particles with prompt decays. In parallel, (meta)stable particles are constrained by cosmological observations. Between these two extremes, there is a gap with particles with moderate lifetimes, connecting hidden sectors and the Standard Model through feeble interactions in “portal” models of dark matter, neutrino masses and other scenarios. The detector design and expected sensitivity of dedicated experiments targeting such particles is reviewed.

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Dedicated Experiments for Feebly Interacting Particles at the LHC

  • 会议论文

  • 发表日期：

    2025年

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  • Vasiliki A. Mitsou

摘要

The LHC experiments have been optimised for the discovery of hypothetical particles with prompt decays. In parallel, (meta)stable particles are constrained by cosmological observations. Between these two extremes, there is a gap with particles with moderate lifetimes, connecting hidden sectors and the Standard Model through feeble interactions in “portal” models of dark matter, neutrino masses and other scenarios. The detector design and expected sensitivity of dedicated experiments targeting such particles is reviewed.