Collider search of light dark matter model with dark sector decay |
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| Authors: | Yu Cheng Wei Liao Qi-Shu Yan |
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| Affiliation: | 1. School of Physics, East China University of Science and Technology, Shanghai 200237, China2. Tsung-Dao Lee Institute, and School of Physics and Astronomy, Shanghai Jiao-Tong University, Shanghai 200240, China3. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China4. Center for Future High Energy Physics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | We explore the possibility that the dark matter relic density is not produced by a thermal mechanism directly, but by the decay of other heavier dark-sector particles which themselves can be produced by the thermal freeze-out mechanism. Using a concrete model with light dark matter from dark sector decay, we study the collider signature of the dark sector particles associated with Higgs production processes. We find that future lepton colliders could be a better place to probe the signature of this kind of light dark matter model than hadron colliders such as LHC. Also, we find that a Higgs factory with center-of-mass energy 250 GeV has a better potential to resolve the signature of this kind of light dark matter model than a Higgs factory with center-of-mass energy 350 GeV. |
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| Keywords: | collider light dark matter dark sector signatures |
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