The general propagator for S-wave threshold states
High Energy Physics - Phenomenology
2025-02-07 v5 High Energy Physics - Experiment
Abstract
We demonstrate that the propagator, derived from an Effective Field Theory (EFT) that incorporates Weinberger's compositeness theorem, provides a more general formula for describing S-wave near-threshold states. By fitting the lineshape using this propagator, we can extract the factor for these states and elucidate their structures.
Cite
@article{arxiv.2401.03373,
title = {The general propagator for S-wave threshold states},
author = {Hongge Xu and Ning Yu and Zuman Zhang and Guoying Chen},
journal= {arXiv preprint arXiv:2401.03373},
year = {2025}
}
Comments
17pages, the charged channel of the X(3872) added