Dirac Phenomenology and Hyperon-Nucleus Interactions

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概要

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• We discuss various aspects of hyperon-nucleus interactions in the relativistic mean field theory. First, characteristics of Λ, Σ and Ξ 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_<ωY>. Second, optical potentials for Λ and Σ scattering off nuclei are developed based on a global nucleon-nucleus 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 Λ hypernuclei. The large discrepancy between the decay rates and data suggests the need for additional meson exchanges.

• 理論物理学刊行会の論文
• 1995-03-31

著者

• Cooper E.

  Department Of Physics University College Of The Fraser Valley

• MARES J.

  TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C.

• JENNINGS B.

  TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C.

• Mares J.

  Triumf 4004 Wesbrook Mall Vancouver B.c. : Nuclear Physics Institute

• Jennings B.

  Triumf 4004 Wesbrook Mall Vancouver B.c.

• COOPER E.

  Department of Physics, University College of the Fraser Valley

• MARES J.

  TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C. : Nuclear Physics Institute

• Jennings B.K.

  TRIUMF, 4004 Wesbrook Mall, Vancouver, B.C.

• Cooper E.D.

  Department of Physics, University College of the Fraser Valley

関連論文

• Dirac Phenomenology and Hyperon-Nucleus Interactions

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