Momentum-space treatment of the Coulomb interaction in three-nucleon reactions with two protons

Journal Article · Sun May 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.054005· OSTI ID:20698650

Deltuva, A ^[1]; Fonseca, A C ^[1]; Sauer, P U ^[2]

---

1. Centro de Fisica Nuclear da Universidade de Lisboa, P-1649-003 Lisbon (Portugal)
2. Institut fuer Theoretische Physik, Universitaet Hannover, D-30167 Hannover (Germany)

The Coulomb interaction between two protons is included in the calculation of proton-deuteron elastic scattering, radiative proton-deuteron capture, and two-body electromagnetic disintegration of {sup 3}He. The hadron dynamics is based on the purely nucleonic charge-dependent (CD) Bonn potential and its realistic extension CD Bonn + {delta} to a coupled-channel two-baryon potential, allowing for single virtual {delta}-isobar excitation. Calculations are done using integral equations in momentum space. The screening and renormalization approach is employed for including the Coulomb interaction. Convergence of the procedure is found at moderate screening radii. The reliability of the method is demonstrated. The Coulomb effect on observables is seen at low energies for the entire kinematic regime. In proton-deuteron elastic scattering at higher energies the Coulomb effect is confined to forward scattering angles; the {delta}-isobar effect found previously remains unchanged by the Coulomb effect. In electromagnetic reactions the Coulomb effect competes with other effects in a complicated way.

• OSTI ID: 20698650
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
CONVERGENCE
COUPLED CHANNEL THEORY
DELTA BARYONS
DEUTERONS
ELASTIC SCATTERING
EXCITATION
HELIUM 3
INTEGRAL EQUATIONS
NUCLEAR POTENTIAL
PROTON REACTIONS
PROTONS
RENORMALIZATION
TWO-BODY PROBLEM