Abstract
We used a torsion pendulum containing polarized electrons to search for -violating interactions between the pendulum’s electrons and unpolarized matter in the laboratory’s surroundings or the Sun, and to test for preferred-frame effects that would precess the electrons about a direction fixed in inertial space. We find and for . Our preferred-frame constraints, interpreted in the Kostelecký framework, set an upper limit on the parameter that should be compared to the benchmark value .
- Received 4 May 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.021603
©2006 American Physical Society