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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Indian Academy of Sciences
2007
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| Online Access: | http://eprints.uanl.mx/27351/1/258.pdf |
| _version_ | 1838551011393798144 |
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| author | Morones Ibarra, José Rubén Santos Guevara, Ayax |
| author_facet | Morones Ibarra, José Rubén Santos Guevara, Ayax |
| author_sort | Morones Ibarra, José Rubén |
| collection | Repositorio Institucional |
| description | 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 function. The value obtained for the mass is in good agreement with that reported in the Particle Data Book for the σ-meson, which is also named f0(600). This result also shows that σ-meson can be considered as a two-pion resonance |
| format | Article |
| id | eprints-27351 |
| institution | UANL |
| language | English |
| publishDate | 2007 |
| publisher | Indian Academy of Sciences |
| record_format | eprints |
| spelling | eprints-273512025-07-23T17:13:46Z http://eprints.uanl.mx/27351/ A calculation of the physical mass of sigma meson Morones Ibarra, José Rubén Santos Guevara, Ayax QC Física 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 function. The value obtained for the mass is in good agreement with that reported in the Particle Data Book for the σ-meson, which is also named f0(600). This result also shows that σ-meson can be considered as a two-pion resonance Indian Academy of Sciences 2007 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/27351/1/258.pdf http://eprints.uanl.mx/27351/1.haspreviewThumbnailVersion/258.pdf Morones Ibarra, José Rubén y Santos Guevara, Ayax (2007) A calculation of the physical mass of sigma meson. Pramana:, 68 (6). pp. 925-930. ISSN 0304-4289 (Por publicarse) http://doi.org/10.1007/s12043-007-0092-7 doi:10.1007/s12043-007-0092-7 |
| spellingShingle | QC Física Morones Ibarra, José Rubén Santos Guevara, Ayax A calculation of the physical mass of sigma meson |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | A calculation of the physical mass of sigma meson |
| title_full | A calculation of the physical mass of sigma meson |
| title_fullStr | A calculation of the physical mass of sigma meson |
| title_full_unstemmed | A calculation of the physical mass of sigma meson |
| title_short | A calculation of the physical mass of sigma meson |
| title_sort | calculation of the physical mass of sigma meson |
| topic | QC Física |
| url | http://eprints.uanl.mx/27351/1/258.pdf |
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