Calculations of the exclusive processes {sup 2}H(e,e{sup '}p)n,{sup 3}He(e,e{sup '}p){sup 2}H, and {sup 3}He(e,e{sup '}p)(pn) within a generalized eikonal approximation

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.024005· OSTI ID:20695926

Ciofi degli Atti, C; Kaptari, L P ^[1]

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1. Department of Physics, University of Perugia and Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Via A. Pascoli, I-06123 (Italy)

The exclusive processes {sup 2}H(e,e{sup '}p)n,{sup 3}He(e,e{sup '}p){sup 2}H, and {sup 3}He(e,e{sup '}p)(pn) have been analyzed using realistic few-body wave functions and treating the final state interaction (FSI) within a generalized eikonal approximation (GEA), based on direct calculation of the Feynman diagrams describing the rescattering of the struck nucleon with the nucleons of the A-1 system. The approach represents an improvement of the conventional Glauber approach (GA) because it allows one to take into account the effects of the nuclear excitation of the A-1 system on the rescattering of the struck nucleon. Using realistic three-body wave functions corresponding to the AV18 interaction, the results of our parameter-free calculations are compared with available experimental data. It is found that in some kinematical conditions FSI effects represent small corrections, whereas in other kinematics conditions they are very large and absolutely necessary to provide a satisfactory agreement between theoretical calculations and experimental data. It is shown that in the kinematics of the experimental data that have been considered, covering the region of missing momentum and energy with p{sub m}{<=}0.6 GeV/c and E{sub m}{<=}100 MeV in the perpendicular kinematics, the GA and GEA predictions differ only by less than {approx_equal}3-4%.

• OSTI ID: 20695926
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevC.71.024005; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRECTIONS
DEUTERIUM TARGET
DEUTERONS
EIKONAL APPROXIMATION
ELECTRON REACTIONS
ELECTRONS
EXCITATION
EXCLUSIVE INTERACTIONS
FEYNMAN DIAGRAM
FINAL-STATE INTERACTIONS
GEV RANGE
HELIUM 3 TARGET
MEV RANGE
NEUTRONS
OPTICAL MODELS
PROTONS
RESCATTERING
THREE-BODY PROBLEM
WAVE FUNCTIONS