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 language | English (US) |
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Article number | 201801 |
Journal | Physical Review Letters |
Volume | 115 |
Issue number | 20 |
DOIs | |
State | Published - Nov 9 2015 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy