Observations of Parity Nonconservation in Atomic Thallium
1981
15 pages
Published in:
- Phys.Rev.D 24 (1981) 1134-1148
Citations per year
Abstract: (APS)
A detailed account is given of observations of parity nonconservation in the 6P122−7P122 transition in Tl81203,205. Absorption of circularly polarized 293-nm photons by 6P122 atoms in an E field results in polarization of the 7P122 state through interference of the Stark E1 amplitude with M1 and parity-nonconserving E1 amplitudes. This polarization is detected by selective excitation of mF=±1 components of the 7P122 state to the 8S122 state and observation of the ensuing decay fluorescence at 323 nm. Systematic corrections due to imperfect circular polarization, misaligned E fields, and residual magnetic fields are determined precisely by a series of auxiliary experiments. The result is expressed in terms of the circular dichroism δexpt=+(2.8−0.9+1.0)×10−3, to be compared with estimates based on the Weinberg-Salam model for sin2θw=0.23:δtheo=+(2.1±0.7)×10−3.- THALLIUM: ATOM
- ATOMIC PHYSICS: PARITY
- PARITY: ATOMIC PHYSICS
- PHOTON: TRANSITION
- POLARIZATION: ASYMMETRY
- ASYMMETRY: POLARIZATION
- PARITY: VIOLATION
- VIOLATION: PARITY
- Salam-Weinberg model
- EXPERIMENTAL RESULTS
References(21)
Figures(0)