Sensitivity of the deuteron form factor to nucleon resonances

Journal Article · Wed Oct 01 04:00:00 EDT 1997

OSTI ID:756484

Herbst, Kelly Ann; Gross, Franz

The sensitivity of the deuteron form factor to contributions from the excited states of the nucleon is explored using a simple model of the nucleon-nucleon interaction which employs a tower of charged nucleon resonances. The model is manifestly covariant, analytically solvable, and gauge invariant. The consequences of this model are studied in the simplest possible framework. The authors assume that all particles have spin zero and that the tower has only three charged members, which consist of the proton, the Roper, and a higher state in the vicinity of the D{sub 13}. Nucleon-nucleon S-wave phase shifts and the deuteron form factor are calculated using this three member tower, and the results are compared to similar calculations using the proton ground state only. They conclude that the deuteron form factor is insensitive to the presence of excited states of the proton unless those states are of sufficiently low mass to produce strong inelasticities in NN scattering channels.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 756484
• Report Number(s): DOE/ER/40150-1577; JLAB-THY-97-42; WM-97-111; nucl-th/9710020
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEUTERONS
FORM FACTORS
GAUGE INVARIANCE
NUCLEON-NUCLEON INTERACTIONS
PARTICLE MODELS
PROTONS
RESONANCE
SENSITIVITY