Published May 1994
| Version v1
Journal article
Λ(1405) and meson-baryon interactions in a quark model
Creators
- 1. Department of Physics, Sophia University, Tokyo 102 (Japan)
Description
We investigate the mass spectra of p-wave Λ's by means of the constituent quark model with the effect of coupling to meson-baryon channels. The quark wave function of the lowest p-wave Λ*, i.e., Λ(1405), is found to be dominated by the antisymmetric flavor state which strongly couples to the bar KN and πΣ channels. The significant downward shift of the Λ(1405)'s mass is attributed to its large attractive self-energy due to the bar KNΛ* and πΣΛ* coupling and its strong increase due to the presence of the cusp around the bar KN threshold
Additional details
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 49
- Journal Issue
- 5
- Journal Page Range
- p. 2831-2834.
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25060013
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- HYPERONS; KAONS; LAMBDA-1405 BARYONS; MASS SPECTRA; MESON-BARYON INTERACTIONS; P WAVES; QUARK MODEL; SIGMA BARYONS
- Descriptors DEC
- BARYONS; BOSONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LAMBDA BARYONS; MATHEMATICAL MODELS; MESONS; PARTIAL WAVES; PARTICLE INTERACTIONS; PARTICLE MODELS; PSEUDOSCALAR MESONS; SPECTRA; STRANGE MESONS; STRANGE PARTICLES