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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.