Precise test of electroweak theory from a new measurement of parity nonconservation in atomic thallium - INSPIRE

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Precise test of electroweak theory from a new measurement of parity nonconservation in atomic thallium

P.A. Vetter
(
- Washington U., Seattle
)
,
D.M. Meekhof
(
- Washington U., Seattle
)
,
P.K. Majumder
(
- Washington U., Seattle
)
,
S.K. Lamoreaux
(
- Washington U., Seattle
)
,
E.N. Fortson
(
- Washington U., Seattle
)

1995

4 pages

Published in:

Phys.Rev.Lett. 74 (1995) 2658-2661

DOI:

10.1103/PhysRevLett.74.2658

View in:

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Abstract: (APS)

We report a new measurement of parity nonconserving (PNC) optical rotation near the 1.28 μm, 6P1/2→6P3/2 magnetic dipole transition in thallium. We find the ratio of the PNC E1 amplitude to the M1 amplitude to be R=(−14.68±0.17)×10−8, which within the present uncertainty of atomic theory yields the thallium weak charge Qw(T205l)=−114.2±3.8 and the electroweak parameter S=−2.2±3.0. Separate measurements on the F=1 and F=0 ground-state hyperfine components of the transition yield R1−R0=(0.15±0.20)×10−8, which limits the size of nuclear spin-dependent PNC in Tl.

electroweak interaction
validity test
parity: violation
violation: parity
thallium: atom
experimental results

References(18)

Figures(0)

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