KNN quasibound state and the KN interaction: Coupled-channels Faddeev calculations of the KNN-{pi}{sigma}N system

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.044004· OSTI ID:21067784

Shevchenko, N V; Mares, J ^[1]; Gal, A ^[2]; Revai, J ^[3]

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1. Nuclear Physics Institute, 25068 Rez (Czech Republic)
2. Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel)
3. Research Institute for Particle and Nuclear Physics, H-1525 Budapest, P.O.B. 49 (Hungary)

Coupled-channels three-body calculations of an I=1/2,J{sup {pi}}=0{sup -} KNN quasibound state in the KNN-{pi}{sigma}N system were performed and the dependence of the resulting three-body energy on the two-body KN-{pi}{sigma} interaction was investigated. Earlier results of binding energy B{sub K{sup -}}{sub pp}{approx}50-70 MeV and width {gamma}{sub K{sup -}}{sub pp}{approx}100 MeV are confirmed [N. V. Shevchenko et al., Phys. Rev. Lett. 98, 082301 (2007)]. It is shown that a suitably constructed energy-independent complex KN potential gives a considerably shallower and narrower three-body quasibound state than the full coupled-channels calculation. Comparison with other calculations is made.

• OSTI ID: 21067784
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.044004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
COMPARATIVE EVALUATIONS
COUPLED CHANNEL THEORY
FADDEEV EQUATIONS
KAON-NUCLEON INTERACTIONS
MEV RANGE
NUCLEONS
PIONS
POTENTIALS
QUASIBOUND STATE
SIGMA BARYONS
THREE-BODY PROBLEM
TWO-BODY PROBLEM