Two-Pion Exchange Interaction Between Constituent Quarks
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
The two-pion exchange interaction between constituent quarks is shown to enhance the effect of the the isospin dependent spin-spin component of the one-pion exchange interaction, and to cancel out its tensor component. It therefore provides a partial explanation for the phenomenological observation that the hyperfine interaction between constituent quarks is well described by a flavor dependent spin-spin interaction, which is attractive at short and repulsive at long range. The spin-orbit component of the two-pion exchange interaction is stronger than and has the opposite sign from that associated with the linear confining interaction in the shell multiplets.
Keywords
Cite
@article{arxiv.hep-ph/9902319,
title = {Two-Pion Exchange Interaction Between Constituent Quarks},
author = {D. O. Riska and G. E. Brown},
journal= {arXiv preprint arXiv:hep-ph/9902319},
year = {2009}
}
Comments
Revised accepted version