Three-nucleon force and the [Delta] mechanism for pion production and pion absorption

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.2208· OSTI ID:5916676

Pena, M T ^[1]; Sauer, P U ^[2]; Stadler, A ^[3]; Kortemeyer, G ^[4]

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1. Centro de Fisica Nuclear da Universidade de Lisboa, P-1699 Lisboa Codex (Portugal) Continuous Electron Beam Accelerator Facility, Newport News, Virginia 23606 (United States)
2. Institut fuer Theoretische Physik, Universitaet Hannover, D-3000 Hannover 1 (Germany)
3. Institut fuer Theoretische Physik, Universitaet Hannover, D-3000 Hannover 1 (Germany) Department of Physics, College of William and Mary, Williamsburg, Virginia 23185 (United States)
4. Institute fuer Theoretische Physik, Universitaet Hannover, D-3000 Hannover 1 (Germany)

The description of the three-nucleon system in terms of nucleon and [Delta] degrees of freedom is extended to allow for explicit pion production (absorption) from single dynamic [Delta] deexcitation (excitation) processes. This mechanism yields an energy dependent effective three-body Hamiltonian. The Faddeev equations for the trinucleon bound state are solved with a force model that has already been tested in the two-nucleon system above pion-production threshold. The binding energy and other bound-state properties are calculated. The contribution to the effective three-nucleon force arising from the pionic degrees of freedom is evaluated. The validity of previous coupled-channel calculations with explicit but stable [Delta] isobar components in the wave function is studied.

• DOE Contract Number: FG05-88ER40435
• OSTI ID: 5916676
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
BARYONS
BINDING ENERGY
BOSONS
BOUND STATE
DE-EXCITATION
DELTA BARYONS
ELEMENTARY PARTICLES
ENERGY
ENERGY-LEVEL TRANSITIONS
EQUATIONS
FADDEEV EQUATIONS
FERMIONS
HADRONS
MANY-BODY PROBLEM
MESONS
N BARYONS
NUCLEAR FORCES
NUCLEONS
PARTICLE PRODUCTION
PIONS
PSEUDOSCALAR MESONS
SORPTION
THREE-BODY PROBLEM