Running in the ALPs
Mikael Chala, Guilherme Guedes, Maria Ramos, Jose Santiago

TL;DR
This paper calculates the complete one-loop renormalization group evolution of parameters in the effective field theory for axion-like particles, enabling consistent analysis of experimental constraints across energy scales.
Contribution
It provides the first comprehensive computation of the one-loop RG evolution for all relevant parameters in ALP effective field theory, including basis relations and symmetry considerations.
Findings
Full one-loop RG equations derived for ALP parameters
Clarification of basis choices and symmetry relations in literature
Facilitates consistent interpretation of experimental constraints
Abstract
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.
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