title: QED corrections to the parity-nonconserving 6s-7s amplitude in 133Cs.
abstract: The complete gauge-invariant set of the one-loop QED corrections to the parity-nonconserving 6s-7s amplitude in 133Cs is evaluated to all orders in alphaZ 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 133Cs, derived using two most accurate values of the vector transition polarizability beta, is Q(W)=-72.57(46) for beta=26.957(51)a(3)(B) and Q(W)=-73.09(54) for beta=27.15(11)a(3)(B). The first value deviates by 1.1sigma from the prediction of the standard model, while the second one is in perfect agreement with it.
authors.affiliation: Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504, Russia.
authors.forename: V M
authors.initials: VM
authors.lastname: Shabaev
authors.forename: K
authors.initials: K
authors.lastname: Pachucki
authors.forename: I I
authors.initials: II
authors.lastname: Tupitsyn
authors.forename: V A
authors.initials: VA
authors.lastname: Yerokhin