Measurement of the Static Stark Shift of the 7s ^{2}S_{1/2} Level in Atomic Cesium.

We report a new precision measurement of the dc Stark shift of the 6s ^{2}S_{1/2}→7s ^{2}S_{1/2} transition in atomic cesium-133. Our result is 0.72246  (29)  Hz(V/cm)^{-2}.

Determination of the Scalar and Vector Polarizabilities of the Cesium 6s^{2}S_{1/2}→7s^{2}S_{1/2} Transition and Implications for Atomic Parity Nonconservation.

Using recent high-precision measurements of electric dipole matrix elements of atomic cesium, we make an improved determination of the scalar (α) and vector (β) polarizabilities of the cesium 6s^{2}S_{1/2}→7s^{2}S_{1/2} transition calculated through a sum-over-states method. We report values of α=-268.82(30)a_{0}^{3} and β=27.