On the nature of the lightest scalar resonances

Z. X. Sun; L. Y. Xiao; Z. G. Xiao; H. Q. Zheng; Z. Y. Zhou

doi:10.1063/1.1920981

On the nature of the lightest scalar resonances

High Energy Physics - Phenomenology 2009-11-10 v1

Authors: Z. X. Sun , L. Y. Xiao , Z. G. Xiao , H. Q. Zheng , Z. Y. Zhou

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Abstract

We briefly review the recent progresses in the new unitarization approach being developed by us. Especially we discuss the large $N_c$ $\pi\pi$ scatterings by making use of the partial wave $S$ matrix parametrization form. We find that the $\sigma$ pole may move to the negative real axis on the second sheet of the complex $s$ plane, therefore it raises the interesting question that this ` $\sigma$ ' pole may be related to the $\sigma$ in the linear $\sigma$ model.

Cite

@article{arxiv.hep-ph/0411375,
  title  = {On the nature of the lightest scalar resonances},
  author = {Z. X. Sun and L. Y. Xiao and Z. G. Xiao and H. Q. Zheng and Z. Y. Zhou},
  journal= {arXiv preprint arXiv:hep-ph/0411375},
  year   = {2009}
}

Comments

Talk presented by Zheng at ``Quark Confinement and Hadron Spectroscopy VI'', 21--25 Sept. 2004, Cagliari, Italy. 3 pages with 2 figures

On the nature of the lightest scalar resonances

Abstract

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