Nucleon-nucleon scattering with isobar degrees of freedom
A nonrelativistic nucleon-nucleon interaction potential model containing explicit coupling to N..delta..(1232 MeV) and /or NN/sup */(1440 MeV) channels is developed and used to describe empirical elastic scattering phase shifts from 0--1000 MeV. The theoretical Feshbach-Lomon meson exchange potential provides the starting point for describing the interaction between the two nucleons. NN..pi.. and NNNN-bar intermediate states are implicitly included through the two-pion exchange portion of the Feshbach-Lomon interaction. Short range phenomenological NN-NN potentials are used along with empirical short range and one pion exchange coupling potentials between the nucleon-nucleon and nucleon-isobar channels. Quantitative fits to the Arndt phase shifts and inelasticity parameters from 0--1000 MeV for Jless than or equal to6 are obtained. The resulting potentials are obtained in a local, coordinate space representation, convenient for use in many-body calculations at intermediate energies.
- Research Organization:
- Department of Physics, University of Texas at Austin, Austin, Texas 78712
- OSTI ID:
- 6001601
- Journal Information:
- Phys. Rev. C; (United States), Vol. 35:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NUCLEON-NUCLEON INTERACTIONS
PHASE SHIFT
ELASTIC SCATTERING
ISOBARIC NUCLEI
MANY-BODY PROBLEM
MEV RANGE
PARTIAL WAVES
BARYON-BARYON INTERACTIONS
ENERGY RANGE
HADRON-HADRON INTERACTIONS
INTERACTIONS
NUCLEI
PARTICLE INTERACTIONS
SCATTERING
653003* - Nuclear Theory- Nuclear Reactions & Scattering