6533b82afe1ef96bd128b6ed

RESEARCH PRODUCT

Exposing dark sector with futureZ-factories

subject

description

We investigate the prospects of searching dark sector models via exotic [Formula: see text]-boson decay at future [Formula: see text] colliders with Giga [Formula: see text] and Tera [Formula: see text] options. Four general categories of dark sector models: Higgs portal dark matter, vector portal dark matter, inelastic dark matter and axion-like particles, are considered. Focusing on channels motivated by the dark sector models, we carry out a model independent study of the sensitivities of [Formula: see text]-factories in probing exotic decays. The limits on branching ratios of the exotic [Formula: see text] decay are typically [Formula: see text] for the Giga [Formula: see text] and [Formula: see text] for the Tera [Formula: see text], and they are compared with the projection for the high luminosity LHC. We demonstrate that future [Formula: see text]-factories can provide its unique and leading sensitivity, and highlight the complementarity with other experiments, including the indirect and direct dark matter search limits, and the existing collider limits. Future [Formula: see text] factories will play a leading role to uncover the hidden sector of the universe in the future.