Long-range parity-nonconserving interaction

There is a long-range parity-nonconserving (PNC) interaction between a charged particle and a composite system (atom, nucleus) induced by the usual contact weak interaction inside this system: U=(H\ifmmode\times\else\texttimes\fi{}E)\ensuremath{\cdot}J${\mathrm{\ensuremath{\beta}}}_{\mathit{v}}$\ensuremath{\sim}1/${\mathit{R}}^{4}$ or 1/${\mathit{R}}^{5}$, where R is distance, E and H are electric and magnetic fields of the particle, and J and ${\mathrm{\ensuremath{\beta}}}_{\mathit{v}}$ are the angular momentum and PNC vector polarizability of the system. The mechanisms of enhancement of PNC vector polarizability are considered. PNC effects in atoms, molecules, and solids are discussed (P-odd and T-even electric dipole moment, P-odd electric field, etc.).

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