Effective Field Theory for Low-Energy np Systems
High Energy Physics - Phenomenology
2007-05-23 v1 Nuclear Theory
Abstract
The properties of low-energy neutron-proton systems are studied in an effective field theory where only nucleons figure as relevant degrees of freedom. With a finite momentum cut-off regularization scheme, we show that the large scattering lengths of the np systems do not spoil the convergence of the effective field theory, which turns out to be extremely successful in reproducing, with little cut-off dependence, the deuteron properties, the np 1S0 scattering amplitude and most significantly, the M1 transition amplitude entering into the radiative np capture process.
Cite
@article{arxiv.hep-ph/9803417,
title = {Effective Field Theory for Low-Energy np Systems},
author = {Tae-Sun Park},
journal= {arXiv preprint arXiv:hep-ph/9803417},
year = {2007}
}
Comments
11 pages, LaTeX, two eps figures, uses epsfig.sty and sprocl.sty. Invited talk at the APCTP Workshop on Astro-Hadron Physics, Seoul, Korea, October 1997