Progress report and renewal proposal
We have been working mainly on five inter-related subprojects: (1) derivation of the intermediate range nucleon-nucleon interaction with the new dramatically altered ..pi pi.. s-wave interaction and using a new method that utilizes much shorter and simpler analytic continuation through the unphysical region that lies between the ..pi..N and ..pi pi.. physical regions of the N anti N..--> pi pi.. amplitude (with significantly improved accuracy for the nucleon-nucleon interaction); (2) construction of a short range phenomenological potential that, with the theoretical part mentioned above, gives a precise fit to the nucleon-nucleon data and is parameterized for easy use in nucleon calculations; (3) phase shift analyses of the world data below 400 MeV, especially the large amount of very precise data below 20 MeV and the new data near 55 MeV that have never been analyzed properly, and determining which phrases are given by theory at which energies; (4) the introduction of our K-matrix formulation of the Optimal Polynomial Expansion in order to accelerate convergence of the partial wave series at LAMPF energies; and (5) setting up of a cooperatively evaluated and verified permanent nucleon-nucleon data bank in the 0-1200 range that can be used by all nucleon-nucleon researchers (or anyone else) via Telenet dial-in and by means of a published compendium. Progress is reported. (WHK)
- Research Organization:
- Michigan State Univ., East Lansing (USA). Dept. of Physics
- DOE Contract Number:
- AC02-79ER10516
- OSTI ID:
- 6366496
- Report Number(s):
- DOE/ER/10516-15; ON: DE83008331
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nucleon-nucleon theory and phenomenology. Progress report, June 1-October 30, 1984
Nucleon-nucleon theory and phenomenology. Progress report and renewal proposal, June 1, 1981-May 31, 1982
Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
NUCLEON-NUCLEON INTERACTIONS
INFORMATION SYSTEMS
RESEARCH PROGRAMS
NUCLEON-NUCLEON POTENTIAL
COULOMB FIELD
GEV RANGE 01-10
K MATRIX
KEV RANGE
MEV RANGE
P WAVES
PHASE SHIFT
SCATTERING LENGTHS
BARYON-BARYON INTERACTIONS
DIMENSIONS
ELECTRIC FIELDS
ENERGY RANGE
GEV RANGE
HADRON-HADRON INTERACTIONS
INTERACTIONS
LENGTH
MATRICES
PARTIAL WAVES
PARTICLE INTERACTIONS
POTENTIALS
651711* - Nuclear Properties & Reactions
A=90-149
Theoretical- Mass
Abundance
& Binding Energy- (-1987)
651725 - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)
651721 - Nuclear Properties & Reactions
A=90-149
Experimental- Mass
Abundance
& Binding Energy- (-1987)
651715 - Nuclear Properties & Reactions
A=90-149
Theoretical- Nuclear Reactions & Scattering- (-1987)
990300 - Information Handling