Existence of sigma meson in pi-pi scattering
高能物理 - 唯象学
2007-05-23 v1
摘要
In this talk I summarize a recently proposed mechanism to understand pi pi scattering to 1 GeV. The model is motivated by the 1/Nc expansion to QCD, and includes a current algebra contact term and resonant pole exchanges. Chiral symmetry plays an important role in restricting the form of the interactions. The existence of a broad low energy scalar (sigma) is indicated.
引用
@article{arxiv.hep-ph/9702332,
title = {Existence of sigma meson in pi-pi scattering},
author = {Masayasu Harada},
journal= {arXiv preprint arXiv:hep-ph/9702332},
year = {2007}
}
备注
7 pages (LaTeX), 2 PostScript figures (need epsf.tex). Talk given at 1996 International Workshop on ``Perspectives of Strong Coupling Gauge Theories'' (Nov. 13--16, 1996, Nagoya)