Cloudy bag model for the [ital S]-[ital D] wave [ital [bar K]]-[ital N] system

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

DOI:https://doi.org/10.1103/PhysRevC.48.3047· OSTI ID:5681916

He, G; Landau, R H ^[1]

---

1. Physics Department, Oregon State University, Corvallis, Oregon 97331 (United States)

The cloudy quark bag model is applied to the coupled ([ital [bar K]N],[Sigma][pi],[Lambda][pi]) system for [ital S]-[ital D] partial waves. Energy-dependent separable potentials are derived, as are new numerical algorithms for solving the coupled Lippmann-Schwinger equations. The parameters of the model are fit to [ital K][sup [minus]][ital p] scattering and reaction cross sections, branching ratios, and mass spectra from [ital K][sup [minus]][ital p][r arrow][Sigma][pi][pi][pi],[Lambda][pi][pi][pi]. Within the constraints of the model, the branching ratio and [Sigma][pi] mass spectrum data are in conflict. The [Sigma][sub [ital p]13](1385) and [Lambda][sub [ital D]03](1520) resonances are found to be predominately elementary bag states with considerable dressing for the [Sigma][sub [ital P]13]. The [Lambda][sub [ital S]01] (1405) appears as a complicated composite systems arising from two poles. The model with certain parameter sets does predict two sign changes in the real part of the [ital [bar K]N] scattering amplitude near threshold, but they are not quite at the correct energies to produce agreement with the sign of the strong interaction shift of kaonic hydrogen.

• DOE Contract Number: FG06-86ER40283
• OSTI ID: 5681916
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

662130 -- General Theory of Particles & Fields-- S-Matrix Theory
Relativistic Scattering Theory-- (1992-)
662240 -- Models for Strong Interactions-- (1992-)
663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BAG MODEL
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
CROSS SECTIONS
EQUATIONS
EXTENDED PARTICLE MODEL
FIELD THEORIES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HYDROGEN 1 TARGET
INTEGRAL EQUATIONS
INTERACTIONS
KAON MINUS REACTIONS
KAON REACTIONS
KAON-NUCLEON INTERACTIONS
LIPPMANN-SCHWINGER EQUATION
MASS SPECTRA
MATHEMATICAL MODELS
MESON REACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE MODELS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
SCATTERING AMPLITUDES
SPECTRA
TARGETS