After discussion of legitimacy of the dispersive approach in the Standard Model sum rules (s.r.) for parity violating (p.v.) amplitudes are presented. These are s.r. for polarizabilities and p.v. analogue of the Gerasimov--Drell--Hearn sum rule. Phenomenological implications are reviewed.
PACS numbers: 12.15.Ji, 13.60.Fz, 24.80.+y, 25.20.Dc
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