New CP-violation and preferred-frame tests with polarized electrons.
We used a torsion pendulum containing approximately 9 x 10(22) polarized electrons to search for CP-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, /g(P)(e)g(S)(N)//(Planck's constant x c) < 1.7 x 10(-36), and /g(A)(e)g(V)(N)//(Planck's constant x c) < 4.8 x 10(-56) for lambda > 1 AU. Our preferred-frame constraints, interpreted in the Kostelecký framework, set an upper limit on the parameter /b(e)/ <or= 5.0 x 10(-21) eV that should be compared to the benchmark value m(e)(2)/M(Planck)= 2 x 10(-17) eV.
Heckel
B R
BR
Center for Experimental Nuclear Physics and Astrophysics, Box 354290, University of Washington, Seattle, 98195-4290, USA.
Cramer
C E
CE
Cook
T S
TS
Adelberger
E G
EG
Schlamminger
S
S
Schmidt
U
U