The Standard Model in Strong Fields: Electroweak Radiative Corrections for Highly Charged Ions

Abstract

Electroweak radiative corrections to the matrix elements $<n{s}_{1/2}|{\hat{H}}_{PNC}|n^{\prime }{p}_{1/2}>$ are calculated for highly charged hydrogenlike ions. These matrix elements constitute the basis for the description of the most parity nonconserving (PNC) processes in atomic physics. The operator ${\hat{H}}_{PNC}$ represents the parity nonconserving relativistic effective atomic Hamiltonian at the tree level. The deviation of these calculations from the calculations valid for the momentum transfer $q^2=0$ demonstrates the effect of the strong field, characterized by the momentum transfer $q^2=m_e^2$ ($m_e$ is the electron mass). This allows for a test of the Standard Model in the presence of strong fields in experiments with highly charged ions.

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