Effective field theory contribution to charge symmetry breaking NN scattering
Nuclear Theory
2009-11-07 v1
Abstract
The effect of isospin breaking pion s-wave rescattering is included in elastic NN scattering at low energies using effective field theory. Although this mechanism gave a large contribution to charge symmetry breaking in np --> d pi0, the effect is rather small in pp vs. nn scattering parameters and in the 3H-3He binding energy difference. This smallness is caused by large cancellation of the up-down quark mass difference contribution and electromagnetic effects to the np mass difference.
Keywords
Cite
@article{arxiv.nucl-th/0108015,
title = {Effective field theory contribution to charge symmetry breaking NN scattering},
author = {J. A. Niskanen},
journal= {arXiv preprint arXiv:nucl-th/0108015},
year = {2009}
}
Comments
8 pages, 4 eps figures