Hadronic atoms
High Energy Physics - Phenomenology
2024-12-18 v1 High Energy Physics - Experiment
Abstract
We give a brief survey of the theory of hadronic atoms, which represent important sources of information for studying hadron interactions at very low energy. It will be namely demonstrated that a systematic expansion of the observables of hadronic atoms (the energy levels and the decay width) in terms of the fine-structure constant can be obtained, using the framework of non-relativistic effective Lagrangians. We also present a pedagogical introduction to the non-relativistic effective theories that includes a review of the main concepts, such as the scale separation, construction of the Lagrangian, power counting and matching.
Cite
@article{arxiv.2412.13027,
title = {Hadronic atoms},
author = {Akaki Rusetsky},
journal= {arXiv preprint arXiv:2412.13027},
year = {2024}
}
Comments
16 pages, 4 figures, commissioned article for the Encyclopedia of Particle Physics