Nucleon-nucleon theory and phenomenology. Progress report and renewal proposal

Technical Report · Thu Jan 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/5603790· OSTI ID:5603790

Signell, P.

Progress is outlined 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 phases 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 to 1200 MeV range that can be used by all nucleon-nucleon researchers (or anyone else) via Telenet dial-in and by means of a published compendium. (WHK)

• Research Organization: Michigan State Univ., East Lansing (USA). Dept. of Physics
• DOE Contract Number: AC02-79ER10516
• OSTI ID: 5603790
• Report Number(s): DOE/ER/10516-10; ON: DE82006903; TRN: 82-008384
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
NUCLEON-NUCLEON INTERACTIONS
DATA ANALYSIS
NUCLEAR POTENTIAL
PHASE SHIFT
RESEARCH PROGRAMS
SCATTERING
BARYON-BARYON INTERACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
PARTICLE INTERACTIONS
POTENTIALS
645103* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties