ALPaca: The ALP Automatic Computing Algorithm
High Energy Physics - Phenomenology
2025-08-13 v1 High Energy Physics - Experiment
Abstract
The ALP Automatic Computing Algorithm, ALPaca, is an open source Python library devoted to studying the phenomenology of Axion-Like Particles (ALPs) with masses in the ranges GeV. ALPaca provides a flexible and comprehensive framework to define ALP couplings at arbitrary energy scales, perform Renormalisation Group evolution and matching down to the desired low energy scale, and compute a large variety of ALP observables, with particular care to the meson decay sector. The package includes support for UV completions, experimental constraints, and visualisation tools, enabling both detailed analyses and broad parameter space exploration.
Cite
@article{arxiv.2508.08354,
title = {ALPaca: The ALP Automatic Computing Algorithm},
author = {Jorge Alda and Marta Fuentes Zamoro and Luca Merlo and Xavier Ponce Díaz and Stefano Rigolin},
journal= {arXiv preprint arXiv:2508.08354},
year = {2025}
}
Comments
84 pages, 17 tables, 3 figures. ALPaca code available at https://github.com/alp-aca/alp-aca