Probing new spin-independent interactions through precision spectroscopy in atoms with few electrons
Name
PhysRevD.96.115002.pdf
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1.11 MB
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Author(s)
Delaunay, Cédric
Frugiuele, Claudia
Fuchs, Elina
Soreq, Yotam
Date Issued
December 2017
Journal
Physical Review D
Publisher
American Physical Society
Citation
Delaunay, Cédric et al. "Probing new spin-independent interactions through precision spectroscopy in atoms with few electrons." Physical Review D 96, 11 (December 2017): 115002 © 2017 American Physical Society
Version
Final published version
Abstract
The very high precision of current measurements and theory predictions of spectral lines in few-electron atoms allows us to efficiently probe the existence of exotic forces between electrons, neutrons and protons. We investigate the sensitivity to new spin-independent interactions in transition frequencies (and their isotopic shifts) of hydrogen, helium and some heliumlike ions. We find that present data probe new regions of the force-carrier couplings to electrons and neutrons around the MeV mass range. We also find that, below few keV, the sensitivity to the electron coupling in precision spectroscopy of helium and positronium is comparable to that of the anomalous magnetic moment of the electron. Finally, we interpret our results in the dark-photon model where a new gauge boson is kinetically mixed with the photon. There, we show that helium transitions, combined with the anomalous magnetic moment of the electron, provide the strongest indirect bound from laboratory experiments above 100 keV.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.96.115002
