A calculation of the physical mass of sigma meson

J. R. Morones-Ibarra, Ayax Santos-Guevara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)925-930
Number of pages6
JournalPramana - Journal of Physics
Volume68
Issue number6
DOIs
Publication statusPublished - 1 Jun 2007
Externally publishedYes

Bibliographical note

Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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