A Calculation of the Physical Mass of Sigma Meson

Details A Calculation of the Physical Mass of Sigma Meson A Calculation of the Physical Mass of Sigma Meson

2005-06-07

arxiv.org/abs/hep-ph/0506077v1

Pramana 68:925-930,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures

Scientific paper

10.1007/s12043-007-0092-7

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 600MeV. In addition, we obtained the value of 250MeV for the width of its spectral function. The value obtained for the mass, is in an excellent agreement with that reported in the Particle data Book for the sigma meson, which is also named f0(600). This result also shows that the sigma meson can be considered as a two pion resonance.

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