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Constraining light scalar field with torsion-balance gravity experiments

Qin, Cheng-Gang; Lu, Xiao-Yu; Zhao, Bing-Chen +5 more

The light scalar field with a coupling to standard model particles provide a possible source of the long-range Yukawa forces or violation of the weak equivalence principle, which can be potentially explored by precision gravity experiments. We describe the searches for such light scalar fields with the three types of gravity experiments, including…