Λ(1405) and Λ(1405) in J/ψ four-body decays
Creators
- 1. Departamento de Fisica Teorica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Apdo. Correos 22085, 46071 Valencia (Spain)
Description
We study the structure of the baryon resonances Λ(1405) and Λ(1405) in J/ψ four-body decays J/ψ→ΣΣππ in the framework of a coupled channel chiral unitary approach. With still sufficient freedom for model parameters, the Λ(1405) and Λ(1405) resonances are generated by simultaneously taking the meson baryon and meson antibaryon final state interactions into account. The πΣ (πΣ) invariant mass distributions peak around 1410 MeV, which favors the assertion that the Λ(1405) [Λ(1405)] is a superposition of the two Λ(1405) [Λ(1405)] states which dominantly couple to KN (KN) and πΣ (πΣ), respectively. We also calculate the amplitude for isospin I=1 which gives hints of a possible I=1 baryon resonance in the energy region of the Λ(1405), which up to now has not been observed
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.70.065202;
- arXiv
- arXiv:nucl-th/0409076v1;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 70
- Journal Issue
- 6
- Journal Page Range
- p. 065202-065202.8
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37011750
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- AMPLITUDES; ANTIBARYONS; CHIRAL SYMMETRY; CHIRALITY; COUPLED CHANNEL THEORY; FINAL-STATE INTERACTIONS; FOUR-BODY PROBLEM; HADRONIC PARTICLE DECAY; ISOSPIN; J PSI-3097 MESONS; LAGRANGIAN FIELD THEORY; LAMBDA-1405 BARYONS; MASS DISTRIBUTION; PARTICLE PRODUCTION; PERTURBATION THEORY; PIONS; RESONANCE PARTICLES; SIGMA BARYONS; UNITARY SYMMETRY
- Descriptors DEC
- ANTIMATTER; ANTIPARTICLES; BARYONS; BOSONS; CHARMONIUM; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; HYPERONS; INTERACTIONS; LAMBDA BARYONS; MANY-BODY PROBLEM; MATTER; MESONS; PARTICLE DECAY; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARKONIUM; SPATIAL DISTRIBUTION; STRANGE PARTICLES; SYMMETRY; VECTOR MESONS
Optional Information
- Notes
- (c) 2004 The American Physical Society