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HK: Physik der Hadronen und Kerne

HK 43: Theory VII

HK 43.5: Vortrag

Donnerstag, 14. März 2002, 17:30–17:45, A

Nucleon-Nucleon potential from two body Dirac equations at medium energies — •Davaadorj Bayansan¹, Andreas Funk¹, Bin Liu², Horace W. Crater², Heinrich V. von Geramb¹, and Hugo Arellano³ — ¹Nuclear Theory , University Hamburg — ²Space Institute, University Tennessee, Tullahoma — ³Fisica, Universidad de Chile, Santiago

We investigate the implication and use of Dirac’s instant form dynamics in applications of two-body Dirac equations. First, it yields a center of momentum reduction of the two-body Dirac equations to Schrödinger-like equations with effective energy dependent potentials. Second, a link to known and optimally fitted NN potentials (Nijmegen,AV18) as well as quantum inversion potentials is made. Third, the effective potentials are extented, above meson production threshold, as NN optical potentials. The latest NN phase shifts up to 3 GeV are fitted. Some application of the resulting NN potentials in medium energy nucleon-nucleus scattering, formulated in terms of NA full folding optical models, are also shown.