{lambda}(1405) as a resonance in the baryon-meson scattering coupled to the q{sup 3} state in a quark model
- Japan College of Social Work, Kiyose, Tokyo 204-8555 (Japan)
To describe {lambda}(1405) as a resonance in baryon-meson scattering, we have investigated the q{sup 3}-qq scattering system with the flavor-singlet q{sup 3}(0s){sup 2}(0p) state (the {lambda}{sup 1} pole). The scattering is treated by the quark cluster model (QCM). The {lambda}{sup 1} pole is treated as a bound state embedded in the continuum. We have found that a peak appears below the NK threshold in the spin-(1/2), isospin-0 channel even if the mass of the {lambda}{sup 1} pole is above the threshold. This peak disappears when the coupling to the {lambda}{sup 1} pole is switched off. Using the observed hadron mass in the kinetic part of QCM is also found to be important in reproducing a peak just below the NK threshold.
- OSTI ID:
- 21064374
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 76, Issue 3; Other Information: DOI: 10.1103/PhysRevC.76.035204; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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