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paper

Hyperfine splitting in muonic hydrogen constrains new pseudoscalar interactions

arXiv:1501.00455 · doi:10.1016/j.physletb.2015.05.025

Abstract

We constrain the possibility of a new pseudoscalar coupling between the muon and proton using a recent measurement of the 2S hyperfine splitting in muonic hydrogen.

3 pages, 2 figures. Version to appear in PLB