Precision calculation of the axion-nucleon coupling in chiral perturbation theory
Thomas Vonk, Feng-Kun Guo, Ulf-G. Meißner
Abstract
A bstract We derive the axion-nucleon interaction Lagrangian in heavy baryon chiral perturbation theory up to next-to-next-to-leading order. The effective axion-nucleon coupling is calculated to a few percent accuracy.
Topics & Concepts
PhysicsChiral perturbation theoryPerturbation theory (quantum mechanics)Quantum electrodynamicsLagrangianCoupling (piping)BaryonPerturbation (astronomy)Quantum mechanicsEffective field theoryMathematical physicsCoupling constantCoupling strengthChiral anomalyClassical mechanicsChiral modelChiral symmetryTheoretical physicsParticle physicsPoincaré–Lindstedt methodMinimal couplingQuantum field theoryQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions ResearchDark Matter and Cosmic Phenomena