Nature of parity violation

Elucidate the fundamental origin and structure of parity violation in weak interactions.

Background

The work studies a left-right symmetric extension of the SM, based on SU(2)L × SU(2)R × U(1)B−L, that restores parity symmetry at high energies and breaks it spontaneously at lower energies. This framework addresses the observed parity violation in low-energy weak interactions by proposing a restoration at higher scales.

While the paper focuses on one-loop contributions to the muon anomalous magnetic moment in this model, it explicitly identifies the broader question of understanding the nature of parity violation as an open issue.