Preliminary observation of parity nonconservation in atomic thallium

Journal Article · Mon Feb 05 00:00:00 EST 1979 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.42.343· OSTI ID:6462503

Conti, R; Bucksbaum, P; Chu, S; Commins, E; Hunter, L

Parity nonconservation is observed in the 6/sup 2/P/sub 1/2/ - 7/sup 2/P/sub 1/2/ transition in thallium. Absorption of circularly polarized 293-nm photons by 6/sup 2/P/sub 1/2/ atoms in an E field results in polarization of the 7/sup 2/P/sub 1/2/ state through interference of Stark E1 amplitudes with M1 and parity-nonconserving E1 amplitudes M and E/sub p/. Detection of this polarization yields the circular dichroism delta = +(5.2 +- 2.4) x 10/sup -3/, which agrees in sign and magnitude with theoretical estimates based on the Weinberg-Salam model.

• Research Organization: Physics Department, University of California, Berkeley, California 94720
• OSTI ID: 6462503
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 42:6; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
645302 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BEAMS
CROSS SECTIONS
DATA
DATA FORMS
DICHROISM
E1-TRANSITIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FORBIDDEN TRANSITIONS
HELICITY
INFORMATION
INVARIANCE PRINCIPLES
ISOLATED VALUES
M1-TRANSITIONS
MATHEMATICAL MODELS
METALS
MULTIPOLE TRANSITIONS
NUMERICAL DATA
P INVARIANCE
P STATES
PARTICLE MODELS
PARTICLE PROPERTIES
POLARIZED BEAMS
THALLIUM
UNIFIED GAUGE MODELS
WEINBERG-SALAM GAUGE MODEL