Studying the scalar bound states of the $K\bar K$ system in the Bethe-Salpeter formalism
| Title: | Studying the scalar bound states of the $K\bar K$ system in the Bethe-Salpeter formalism |
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| Authors: | Guo, Xin-Heng, Wu, Xing-Hua |
| Source: | Phys.Rev.D76:056004,2007 |
| Publication Year: | 2007 |
| Collection: | High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology |
| More Details: | We study the possible bound states of the $K\bar K$ system in the Bethe-Salpeter formalism in the ladder and instantaneous approximations. We find that the bound states exist. However, these bound states have very small decay widths. Therefore, besides the possible $K\bar K$ component, there may be some other structures in the observed $f_0(980)$ and $a_0(980)$ . Comment: 23 pages, LaTeX2e. Discussions on the legitimacy of the ladder approximation and the instantaneous approximation are added. Recognized typos have been corrected. Several references added |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevD.76.056004 |
| Access URL: | http://arxiv.org/abs/0704.3105 |
| Accession Number: | edsarx.0704.3105 |
| Database: | arXiv |
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