Axion-mediated forces, CP violation and left-right interactions

TL;DR

This paper calculates the CP-violating axion-nucleon coupling within baryon chiral perturbation theory and explores its detectability in experiments, especially in the context of left-right symmetric models with high W_R masses.

Contribution

It provides a detailed computation of the CP-violating axion-nucleon coupling and assesses its experimental prospects in left-right symmetric theories.

Findings

Predicted axion-nucleon coupling is within experimental reach for W_R masses up to 1000 TeV.

Constraints from other CPV observables are correlated with the axion coupling.

The work bridges theoretical calculations with experimental prospects for axion-mediated forces.

Abstract

We compute the CP-violating (CPV) scalar axion coupling to nucleons in the framework of baryon chiral perturbation theory and we apply the results to the case of left-right symmetry. The correlated constraints with other CPV observables show that the predicted axion nucleon coupling is within the reach of present axion-mediated force experiments for $M_{W_R}$ up to $1000$ TeV.