A calculation of the physical mass of sigma meson
We calculate the physical mass and the width of the sigma meson by considering that it couples in vacuum to two virtual pions. The mass is calculated by using the spectral function, and we find that it is about 600 MeV. In addition, we obtained 220 MeV as the value for the width of its spectral func...
| Autores principales: | , |
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| Formato: | Artículo |
| Lenguaje: | English |
| Publicado: |
Indian Academy of Sciences
2007
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/27351/1/258.pdf |