Abstract
We discuss various aspects of hyperon-nucleus interactions in the relativistic mean field theory. First, characteristics of {Lambda}, {Sigma} and {identical_to} hypernuclei, as well as multi strange baryonic objects, are investigated. The spin-orbit splittings and magnetic moments are shown to be very sensitive to the value of the tensor coupling f{omega}y. Second, optical potentials for {Lambda} and {Sigma} scattering off nuclei are developed based on a global nucleon-nucleon Dirac optical potential and SU(3) symmetry. The tensor coupling has a large effect on the predictions for the analyzing power. Third, the Dirac approach is used in the calculations of the non-mesonic decay of {Lambda} hypernuclei. The large discrepancy between the decay rates and data suggests the need for additional meson exchanges. (authors). 62 refs.,7 figs., 6 tabs.
Mares, J;
Jennings, B K;
[1]
Cooper, E D
[2]
- TRIUMF, Vancouver, British Columbia (Canada)
- Fraser Valley Univ. College, Chilliwack, British Columbia (Canada). Dept. of Physics
Citation Formats
Mares, J, Jennings, B K, and Cooper, E D.
Dirac phenomenology and hyperon-nucleus interactions.
Canada: N. p.,
1993.
Web.
Mares, J, Jennings, B K, & Cooper, E D.
Dirac phenomenology and hyperon-nucleus interactions.
Canada.
Mares, J, Jennings, B K, and Cooper, E D.
1993.
"Dirac phenomenology and hyperon-nucleus interactions."
Canada.
@misc{etde_604290,
title = {Dirac phenomenology and hyperon-nucleus interactions}
author = {Mares, J, Jennings, B K, and Cooper, E D}
abstractNote = {We discuss various aspects of hyperon-nucleus interactions in the relativistic mean field theory. First, characteristics of {Lambda}, {Sigma} and {identical_to} hypernuclei, as well as multi strange baryonic objects, are investigated. The spin-orbit splittings and magnetic moments are shown to be very sensitive to the value of the tensor coupling f{omega}y. Second, optical potentials for {Lambda} and {Sigma} scattering off nuclei are developed based on a global nucleon-nucleon Dirac optical potential and SU(3) symmetry. The tensor coupling has a large effect on the predictions for the analyzing power. Third, the Dirac approach is used in the calculations of the non-mesonic decay of {Lambda} hypernuclei. The large discrepancy between the decay rates and data suggests the need for additional meson exchanges. (authors). 62 refs.,7 figs., 6 tabs.}
place = {Canada}
year = {1993}
month = {May}
}
title = {Dirac phenomenology and hyperon-nucleus interactions}
author = {Mares, J, Jennings, B K, and Cooper, E D}
abstractNote = {We discuss various aspects of hyperon-nucleus interactions in the relativistic mean field theory. First, characteristics of {Lambda}, {Sigma} and {identical_to} hypernuclei, as well as multi strange baryonic objects, are investigated. The spin-orbit splittings and magnetic moments are shown to be very sensitive to the value of the tensor coupling f{omega}y. Second, optical potentials for {Lambda} and {Sigma} scattering off nuclei are developed based on a global nucleon-nucleon Dirac optical potential and SU(3) symmetry. The tensor coupling has a large effect on the predictions for the analyzing power. Third, the Dirac approach is used in the calculations of the non-mesonic decay of {Lambda} hypernuclei. The large discrepancy between the decay rates and data suggests the need for additional meson exchanges. (authors). 62 refs.,7 figs., 6 tabs.}
place = {Canada}
year = {1993}
month = {May}
}