Abstract
Vector meson production at low energies is analysed within the chiral invariant effective Lagrangian of the Nambu - Jona - Lasinio-type including meson and diquark sectors with different values of coupling constants. Feynman diagrams are analyzed and it is shown that the pure mesonic sector of NJL-Lagrangian is insufficient to describe experimental data. Diquark contribution is essential and the production cross section is sensitive to the parameters of the diquark sector. The contribution of vector meson decay to the dilepton production-cross section is discussed. The yield of {rho} and {omega} mesons in a zone of hot and dense nuclear matter is analyzed and a non monotonic temperature dependence of the yield is found. (orig.).
Titov, A I;
[1]
Bratkovskaya, E L
[2]
- Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
- Joint Inst. for Nuclear Research, Moscow (USSR). Lab. of Theoretical Physics
Citation Formats
Titov, A I, and Bratkovskaya, E L.
On the vector meson production within Nambu-Jona-Lasinio model.
Germany: N. p.,
1991.
Web.
Titov, A I, & Bratkovskaya, E L.
On the vector meson production within Nambu-Jona-Lasinio model.
Germany.
Titov, A I, and Bratkovskaya, E L.
1991.
"On the vector meson production within Nambu-Jona-Lasinio model."
Germany.
@misc{etde_10121327,
title = {On the vector meson production within Nambu-Jona-Lasinio model}
author = {Titov, A I, and Bratkovskaya, E L}
abstractNote = {Vector meson production at low energies is analysed within the chiral invariant effective Lagrangian of the Nambu - Jona - Lasinio-type including meson and diquark sectors with different values of coupling constants. Feynman diagrams are analyzed and it is shown that the pure mesonic sector of NJL-Lagrangian is insufficient to describe experimental data. Diquark contribution is essential and the production cross section is sensitive to the parameters of the diquark sector. The contribution of vector meson decay to the dilepton production-cross section is discussed. The yield of {rho} and {omega} mesons in a zone of hot and dense nuclear matter is analyzed and a non monotonic temperature dependence of the yield is found. (orig.).}
place = {Germany}
year = {1991}
month = {Nov}
}
title = {On the vector meson production within Nambu-Jona-Lasinio model}
author = {Titov, A I, and Bratkovskaya, E L}
abstractNote = {Vector meson production at low energies is analysed within the chiral invariant effective Lagrangian of the Nambu - Jona - Lasinio-type including meson and diquark sectors with different values of coupling constants. Feynman diagrams are analyzed and it is shown that the pure mesonic sector of NJL-Lagrangian is insufficient to describe experimental data. Diquark contribution is essential and the production cross section is sensitive to the parameters of the diquark sector. The contribution of vector meson decay to the dilepton production-cross section is discussed. The yield of {rho} and {omega} mesons in a zone of hot and dense nuclear matter is analyzed and a non monotonic temperature dependence of the yield is found. (orig.).}
place = {Germany}
year = {1991}
month = {Nov}
}