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arXiv · 2012.08169

Limits on the abundance of millicharged particles bound to matter

Gadi Afek·Fernando Monteiro·Jiaxiang Wang·Benjamin Siegel·Sumita Ghosh·David C. Moore
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Abstract

Millicharged particles (mCPs) are hypothesized particles possessing an electric charge that is a fraction of the charge of the electron. We report a search for mCPs with charges $\gtrsim 10^{-4}~e$ that improves sensitivity to their abundance in matter by roughly two orders of magnitude relative to previous searches. This search is sensitive to such particles over a wide range of masses and charges for which they can form stable bound states with matter, corresponding to a gap in parameter space that is beyond the reach of previous searches from accelerators, colliders, cosmic-ray experiments, and cosmological constraints.

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Gadi Afek, Fernando Monteiro, Jiaxiang Wang, Benjamin Siegel, Sumita Ghosh, David C. Moore. 2020-12-15. Limits on the abundance of millicharged particles bound to matter. https://doi.org/10.1103/physrevd.104.012004

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