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Phys. Rev. Lett. 82, 2484–2487 (1999)

Measurement of the 6S→7S Transition Polarizability in Atomic Cesium and an Improved Test of the Standard Model

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S. C. Bennett and C. E. Wieman
JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309
and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440

See Also: Erratum, Erratum

Received 20 October 1998; published in the issue dated 22 March 1999

The ratio of the off-diagonal hyperfine amplitude to the tensor transition polarizability (Mhf/β) for the 6S→7S transition in cesium has been measured. The value of β = 27.024(43)expt(67)theora03 is then obtained using an accurate semiempirical value of Mhf. This is combined with a previous measurement of parity nonconservation in atomic cesium and previous atomic structure calculations to determine the value of the weak charge. The uncertainties in the atomic structure calculations are updated (and reduced) in light of new experimental tests. The result QW = -72.06(28)expt(34)theor differs from the prediction of the standard model of elementary particle physics by 2.5 σ.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.2484
DOI:
10.1103/PhysRevLett.82.2484
PACS:
32.80.Ys, 11.30.Er, 12.15.Ji, 32.10.Dk

See Also

Erratum: S. C. Bennett and C. E. Wieman, Erratum: Measurement of the 6s→7s Transition Polarizability in Atomic Cesium and an Improved Test of the Standard Model [Phys. Rev. Lett. 82, 2484 (1999)], Phys. Rev. Lett. 82, 4153 (1999).

Erratum: S. C. Bennett and C. E. Wieman, Erratum: Measurement of the 6S→7S Transition Polarizability in Atomic Cesium and an Improved Test of the Standard Model [Phys. Rev. Lett. 82, 2484 (1999)], Phys. Rev. Lett. 83, 889 (1999).

 
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