Unitary coupled channel analysis of the {lambda}(1520) resonance
- Departamento de Fisica Teorica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Aptdo. 22085, E-46071 Valencia (Spain)
We study the {lambda}(1520) resonance in a coupled-channel approach involving the {pi}{sigma}(1385),K{xi}(1530),KN, and {pi}{sigma} channels. Implementing unitarity in coupled channels, we make an analysis of the relative importance of the different mechanisms that contribute to the dynamical structure of this resonance. From experimental information on some partial wave amplitudes and constraints imposed by unitarity, we get a comprehensive description of the amplitudes and hence the couplings to the different channels. We test these amplitudes in different reactions like K{sup -}p{yields}{lambda}{pi}{pi},{gamma}p{yields}K{sup +}K{sup -}p,{gamma}p{yields}K{sup +}{pi}{sup 0}{pi}{sup 0}{lambda}, and {pi}{sup -}p{yields}K{sup 0}K{sup -}p and find a fair agreement with the experimental data.
- OSTI ID:
- 20771487
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 73, Issue 4; Other Information: DOI: 10.1103/PhysRevC.73.045208; (c) 2006 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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