Mass shift of σ-meson in nuclear matter

Morones Ibarra, J. R. y Menchaca Maciel, Mónica del Carmen y Santos Guevara, Ayax y Robledo Padilla, Felipe Ángel (2013) Mass shift of σ-meson in nuclear matter. Pramana, 80 (3). pp. 479-485. ISSN 0304-4289

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Resumen

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.

Tipo de elemento: Article
Palabras claves no controlados: Scalar mesons; hadrons in dense matter; spectral function; dense nuclear matter
Materias: Q Ciencia > QC Física
Divisiones: Ciencias Físico Matemáticas
Usuario depositante: Lic. Josimar Pulido
Creadores:
CreadorEmailORCID
Morones Ibarra, J. R.NO ESPECIFICADONO ESPECIFICADO
Menchaca Maciel, Mónica del CarmenNO ESPECIFICADONO ESPECIFICADO
Santos Guevara, AyaxNO ESPECIFICADONO ESPECIFICADO
Robledo Padilla, Felipe ÁngelNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 08 Jul 2020 11:32
Última modificación: 08 Jul 2020 11:32
URI: http://eprints.uanl.mx/id/eprint/14901

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