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A calculation of the physical mass of sigma meson
J R Morones-Ibarra Ayax Santos-Guevara
Research Articles Volume 68 Issue 6 June 2007 pp 925-930
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https://www.ias.ac.in/article/fulltext/pram/068/06/0925-0930 -
Keywords
Sigma meson ;scalar mesons ;light mesons. -
Abstract
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 $f_{0}$(600). This result also shows that 𝜎-meson can be considered as a two-pion resonance.
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Author Affiliations
J R Morones-Ibarra1 Ayax Santos-Guevara1
- Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma, de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, 66450, México
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Dates
- Published
- June 2007
- Manuscript received
- 24 January 2007
- Manuscript revised
- 26 March 2007
- Accepted
- 11 April 2007
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Pramana – Journal of Physics
Volume 96, 2022
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