TY - JOUR
T1 - Mass shift of σ-meson in nuclear matter
AU - Morones-Ibarra, J. R.
AU - Maciel, Mónica Menchaca
AU - Santos-Guevara, Ayax
AU - Padilla, Felipe Robledo
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/3/1
Y1 - 2013/3/1
N2 - 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.
AB - 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.
UR - http://www.mendeley.com/research/mass-shift-%CF%83meson-nuclear-matter
UR - http://www.scopus.com/inward/record.url?scp=84875481363&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875481363&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/27b01e19-a1ea-32fb-8df0-dfdc29553a71/
U2 - 10.1007/s12043-012-0503-2
DO - 10.1007/s12043-012-0503-2
M3 - Article
SN - 0304-4289
VL - 80
SP - 479
EP - 485
JO - Pramana - Journal of Physics
JF - Pramana - Journal of Physics
IS - 3
ER -