Running in the ALPs

Understand

The couplings of axion-like particles are probed by different experiments across a huge range of energy scales.

• Accordingly, a consistent analysis of the corresponding constraints requires the use of the renormalization group equations.
• We compute the full one-loop renormalization group evolution of all -- relevant and marginal -- parameters in the effective field theory for axion-like particles up to dimension five, above and below the electroweak scale, assuming only that new physics does not violate CP.
• We also include a detailed discussion of the different bases used in the literature, the relations among them and the interplay of the CP and shift symmetries.