Unbinding the Deuteron
High Energy Physics - Phenomenology
2008-03-27 v2
Abstract
We consider a description of the deuteron based on meson exchange potentials. A key feature is the inclusion of the I=S=0 two-pion intermediate state ('sigma(600)') as a significant component of the inter-nucleon potential energy. In this approach, deuteron binding is seen to be predominantly a consequence of sigma(600) and omega(783) exchange, with a secondary tole played by rho(770). We explore sensitivity of two-nucleon binding to changes in the potential and thereby obtain an anthropic constraint -- that the deuteron unbinds for a modest decrease (about 6%) in the attractive sigma(600) potential.
Keywords
Cite
@article{arxiv.0803.3329,
title = {Unbinding the Deuteron},
author = {Eugene Golowich},
journal= {arXiv preprint arXiv:0803.3329},
year = {2008}
}
Comments
References added; Conclusion slightly expanded