QED Corrections to the Parity-Nonconserving 6s-7s Amplitude in {sup 133}Cs
- Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504 (Russian Federation)
- Institute of Theoretical Physics, Warsaw University, Hoza 69, 00-681, Warsaw (Poland)
The complete gauge-invariant set of the one-loop QED corrections to the parity-nonconserving 6s-7s amplitude in {sup 133}Cs is evaluated to all orders in {alpha}Z using a local version of the Dirac-Hartree-Fock potential. The calculations are performed in both length and velocity gauges for the absorbed photon. The total binding QED correction is found to be -0.27(3)%. The weak charge of {sup 133}Cs, derived using two most accurate values of the vector transition polarizability {beta}, is Q{sub W}=-72.57(46) for {beta}=26.957(51)a{sub B}{sup 3} and Q{sub W}=-73.09(54) for {beta}=27.15(11)a{sub B}{sup 3}. The first value deviates by 1.1{sigma} from the prediction of the standard model, while the second one is in perfect agreement with it.
- OSTI ID:
- 20696337
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 94; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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