Bound states, resonances, and poles in low-energy K N interaction models

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2720· OSTI ID:6940850

Fink, Jr, P J ^[1]; He, G; Landau, R H ^[2]; Schnick, J W ^[3]

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1. IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (USA)
2. Physics Department, Oregon State University, Corvallis, Oregon 97331 (USA)
3. Physics Department, Saint Anselm College, Manchester, New Hampshire 03102 (USA)

The locations of the dynamic poles in the complex energy plane of the {ital s}-wave {ital T} matrix for the coupled ({ital {bar K}N},{Sigma}{pi}) system are calculated. Investigated are a quark bag model and several potential models, including one that agrees with the strong interaction shift in kaonic hydrogen as well as scattering data. Each potential model is found to support either one or no poles, while the bag model is found to support two. The poles energies are found to be quite different from the energy of the {Lambda}{sup *}(1405) determined by phenomenological analyses along the real energy axis.

• OSTI ID: 6940850
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIKAONS
ANTIMATTER
ANTIPARTICLES
BAG MODEL
BASIC INTERACTIONS
BOSONS
BOUND STATE
COMPOSITE MODELS
COUPLED CHANNEL THEORY
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAONS
MATHEMATICAL MODELS
MATRICES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTIAL WAVES
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
QUARK MODEL
S MATRIX
S WAVES
STRANGE MESONS
STRANGE PARTICLES
STRANGENESS
STRONG INTERACTIONS