Publication Date
2006
Journal or Book Title
PHYSICS LETTERS B
Abstract
In the phenomenological description of the nuclear interaction an important role is traditionally played by the exchange of a scalar I=0 meson, the sigma, of mass 500–600 MeV, which however is not seen clearly in the particle spectrum and which has a very ambiguous status in QCD. I show that a remarkably simple and reasonably controlled combination of ingredients can reproduce the features of this part of the nuclear force. The use of chiral perturbation theory calculations for two pion exchange supplemented by the Omnes function for pion rescattering suffices to reproduce the magnitude and shape of the exchange of a supposed σ particle. I also attempt to relate this description to the contact interaction that enters more modern descriptions of the internucleon interaction.
Pages
165-170
Volume
643
Issue
3-4
Recommended Citation
Donoghue, JF, "Sigma exchange in the nuclear force and effective field theory" (2006). PHYSICS LETTERS B. 94.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/94
Comments
This is the pre-published version which is collected from arXiv. The published version is at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-4M942BP-1&_user=1516330&_coverDate=12%2F14%2F2006&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1518194337&_rerunOrigin=google&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=8b5f11d48498811ebda296284e8c78f8&searchtype=a