Journal
PHYSICAL REVIEW C
Volume 90, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.025208
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Funding
- European FEDER [FIS2011-28853-C02-01]
- Generalitat Valenciana in the program Prometeo [2009/090]
- European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (Hadron Physics 3) under the Seventh Framework Programme of the European Union [283286]
- Spanish Ministerio de Economia y Competitividad
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Recently, the Weinberg compositeness condition of a bound state was generalized to account for resonant states and higher partial waves. We apply this extension to the case of the Lambda (1520) resonance and quantify the weight of the meson-baryon components in contrast to other possible genuine building blocks. This resonance was theoretically obtained from a coupled channels analysis using the s-wave pi Sigma* and K Xi* and the d-wave (K) over bar N and pi Sigma channels, applying the techniques of the chiral unitary approach. We obtain the result that this resonance is essentially dynamically generated from these meson-baryon channels, leaving room for only 15% weight of other kinds of components in its wave function.
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