Axion-Mediated Forces, CP Violation, and Left-Right Interactions

Area of Science:

• Particle Physics
• Nuclear Physics
• Cosmology

Background:

• CP violation is a key concept in particle physics.
• Axions are hypothetical particles proposed to solve the strong CP problem.
• Baryon chiral perturbation theory is a framework for studying low-energy QCD.

Purpose of the Study:

• To compute the CP-violating scalar axion coupling to nucleons.
• To apply these calculations to models with left-right symmetry.
• To assess the detectability of this coupling in current experiments.

Main Methods:

• Utilizing baryon chiral perturbation theory.
• Incorporating CP-violating observables.
• Analyzing constraints from left-right symmetry models.

Main Results:

• The scalar axion coupling to nucleons was computed.
• Correlated constraints with other CP-violating observables were established.
• The predicted coupling is within experimental reach for specific mass scales.

Conclusions:

• The study provides crucial predictions for axion-nucleon interactions.
• Experimental verification of these predictions is feasible with current technology.
• This research contributes to the ongoing search for axions and new physics.