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Spectroscopy of light atoms and bounds on physics beyond the standard model
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abstract
Newly calculated bounds on the strength of the coupling of an electron to a proton or a neutron by a fifth force are presented. These results are derived from the high precision spectroscopic data currently available for hydrogen, deuterium, helium-3 and helium-4. They do not depend on specific assumptions on how the interaction would couple to a deuteron compared to a proton or would couple to an $\alpha$ particle compared to a helion. They depend on its coupling to a muon, but not in a significant way for carrier masses below 100~keV if one assumes that the strength of the interaction with a muon would be of a similar order of magnitude as the strength of the interaction with an electron in that mass region.
Forward citations
Cited by 1 Pith paper
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Towards a Global Search for New Physics with Isotope Shifts
kifit, a new fit framework, combines isotope shift data from multiple elements into global constraints on new boson couplings to electrons and neutrons.
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