A toy model for "elementariness"
High Energy Physics - Phenomenology
2022-04-06 v2
Abstract
Motivated by recent efforts to analyze corrections to Weinberg's relations for the scattering length and effective range in the presence of a near-threshold bound state, we play around with an instructive toy model for non-relativistic scattering in a central potential. The model allows to interpolate between bound-state configurations of high "compositeness", where the wave function is spread over a wide region beyond the range of the interaction, and compact configurations of high "elementariness", where the wave function is confined to a small region around the center of the potential.
Cite
@article{arxiv.2203.16909,
title = {A toy model for "elementariness"},
author = {Peter C. Bruns},
journal= {arXiv preprint arXiv:2203.16909},
year = {2022}
}
Comments
Added appendix B on the deuteron