Parity Violation by a Dark Gauge Boson

TL;DR

This paper reviews how a dark gauge boson with axial coupling can induce parity violation effects in low-energy experiments, providing a new way to probe dark forces.

Contribution

It introduces the concept of dark parity violation via a dark gauge boson and discusses its implications for low-energy parity tests.

Findings

Dark gauge bosons can induce observable parity violation effects.

Low-energy experiments can serve as sensitive probes of dark forces.

Axial couplings in dark Z models affect effective Weinberg angles.

Abstract

We overview the dark parity violation, which means the parity violation induced by a dark gauge boson of very small mass and coupling. When a dark gauge boson has an axial coupling, as in dark Z model, it can change the effective Weinberg angle in the low-energy experiments such as the atomic parity violation and the low-Q^2 polarized electron scatterings. Such low-energy parity tests are an excellent probe of the dark force.