Electron-deuteron tensor polarization and the two-nucleon force

Journal Article · Mon Sep 01 00:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.22.1285· OSTI ID:5055574

Haftel, M I; Mathelitsch, L; Zingl, H F.K.

Electron-deuteron scattering observables, including the tensor polarizations T/sub 20/, T/sub 2 +- 1/, T/sub 2 +- 2/, are calculated for a variety of N-N potential models. The main goal is to determine how the tensor polarization experiments can help distinguish competing potential models with respect to off-shell behavior and tensor force strength. The pair meson-exchange-current correction of Gari and Hyuga is included in the analysis as well as a correction suggested by Friar for energy-dependent potentials. It is found that whereas electron-deuteron elastic scattering cross sections do not readily distinguish different potentials, the tensor polarizations do. The tensor polarization T/sub 20/ mainly distinguishes potentials with different deuteron s-wave momentum distributions, but does not distinguish potentials with different d-state probabilities (P/sub D/). The tensor polarization T/sub 2 +- 1/, since it factors essentially into a product of the magnetic and quadrupole form factors, allows for the extraction of the quadrupole form factor which is closely related to the tensor force strength and P/sub D/. The tensor polarization T/sub 2 +- 2/ is completely determined by the elastic scattering cross sections and magnetic form factor, and yields no additional information on the N-N force unobtainable from elastic scattering measurements. The tensor polarizations T/sub 20/ and T/sub 21/ have maximum values of order unity in the region q=2 to 5 fm/sup -1/. The calculations indicate that measurements of T/sub 20/ for 2 < or approx. = q < or approx. = 5 fm/sup -1/, and T/sub 2 +- 1/ for 3 < or approx. = q < or approx. = 5 fm/sup -1/ could yield important information on the off-shell behavior and tensor force strength. The meson-exchange-current and energy-dependence corrections are important and must be taken into account to extract potential properties from such experiments.

• Research Organization: Institut fuer Theoretische Physik, Universitaet Graz, A-8010 Graz, Austria
• OSTI ID: 5055574
• Journal Information: Phys. Rev., C; (United States), Vol. 22:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEUTERIUM TARGET
ELECTRON REACTIONS
ELASTIC SCATTERING
NUCLEON-NUCLEON POTENTIAL
TENSOR FORCES
ANGULAR DISTRIBUTION
D STATES
ENERGY DEPENDENCE
EXCHANGE INTERACTIONS
FORM FACTORS
POLARIZATION
S WAVES
SHELL MODELS
STRUCTURE FUNCTIONS
WAVE FUNCTIONS
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ENERGY LEVELS
FUNCTIONS
INTERACTIONS
LEPTON REACTIONS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTIAL WAVES
PARTICLE PROPERTIES
POTENTIALS
SCATTERING
TARGETS
651215* - Nuclear Properties &amp; Reactions
A=1-5
Theoretical- Nuclear Reactions &amp; Scattering- (-1987)