Short-Range, Spin-Dependent Interactions of Electrons: A Probe for Exotic Pseudo-Goldstone Bosons

W. A. Terrano, E. G. Adelberger, J. G. Lee, B. R. Heckel

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

We used a torsion pendulum and rotating attractor with 20-pole electron-spin distributions to probe dipole-dipole interactions mediated by exotic pseudo-Goldstone bosons with mbc2≤500 μeV and coupling strengths up to 14 orders of magnitude weaker than electromagnetism. This corresponds to symmetry-breaking scales F≤70 TeV, the highest reached in any laboratory experiment. We used an attractor with a 20-pole unpolarized mass distribution to improve laboratory bounds on CP-violating monopole-dipole forces with 1.5 μeV<mbc2<400 μeV by up to a factor of 1000.

Original languageEnglish (US)
Article number201801
JournalPhysical Review Letters
Volume115
Issue number20
DOIs
StatePublished - Nov 9 2015
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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