Mass shift of σ-meson in nuclear matter

J. R. Morones-Ibarra, Mónica Menchaca Maciel, Ayax Santos-Guevara, Felipe Robledo Padilla

Research output: Contribution to journalArticle

Abstract

The propagation of σ-meson in nuclear matter is studied in the Walecka model, by assuming that the sigma couples to a pair of nucleon-antinucleon states and to particle-hole states. The in-medium effect of σ-ω mixing is also studied. For completeness, the coupling of sigma to two virtual pions was also considered. It is found that the σ-meson mass decreases with respect to its value in vacuum and that the contribution of the σ-ω mixing effect on the mass shift is relatively small. © Indian Academy of Sciences.
Original languageEnglish
Pages (from-to)479-485
Number of pages7
JournalPramana - Journal of Physics
Volume80
Issue number3
DOIs
Publication statusPublished - 1 Mar 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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