Published November 2004
| Version v1
Journal article
ΛN→NN weak interaction in effective-field theory
- 1. Departament ECM, Facultat de Fisica, Universitat de Barcelona, E-08028, Barcelona (Spain)
- 2. Center of Nuclear Studies, Department of Physics, George Washington University, Washington, DC 20052 (United States)
- 3. Thomas Jefferson National Accelerator Facility, Theory Group, Newport News, Virginia 23606 (United States)
- 4. Department of Physics-LGRT, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
Description
The nonleptonic weak |ΔS|=1 ΛN interaction, responsible for the dominant nonmesonic decay of all but the lightest hypernuclei, is studied in the framework of an effective-field theory. The long-range physics is described through tree-level exchange of the SU(3) Goldstone bosons, while the short-range potential is parametrized in terms of the lowest-order contact terms. We obtain reasonable fits to available weak hypernuclear decay rates and quote the values for the parity-violating asymmetry as predicted by the present effective-field theory
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.70.051601;
- arXiv
- arXiv:nucl-th/0308074v2;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 70
- Journal Issue
- 5
- Journal Page Range
- p. 051601-051601.5
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37011622
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASYMMETRY; ENERGY-LEVEL TRANSITIONS; GOLDSTONE BOSONS; HYPERNUCLEI; ISOSPIN; NUCLEAR FORCES; NUCLEON-HYPERON INTERACTIONS; PARITY; PARTICLE DECAY; POTENTIALS; QUANTUM FIELD THEORY; SU-3 GROUPS; WEAK INTERACTIONS
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BASIC INTERACTIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; FIELD THEORIES; HADRON-HADRON INTERACTIONS; INTERACTIONS; LIE GROUPS; NUCLEAR FRAGMENTS; NUCLEI; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; POSTULATED PARTICLES; SU GROUPS; SYMMETRY GROUPS
Optional Information
- Notes
- (c) 2004 The American Physical Society