Composite nature of the Lambda (1520) resonance
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Composite nature of the Lambda (1520) resonance

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Composite nature of the Lambda (1520) resonance

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dc.contributor.author Aceti, Francesca
dc.contributor.author Oset Báguena, Eulogio
dc.contributor.author Roca Zamora, Luis
dc.date.accessioned 2016-04-22T07:28:19Z
dc.date.available 2016-04-22T07:28:19Z
dc.date.issued 2014
dc.identifier.uri http://hdl.handle.net/10550/52977
dc.description.abstract 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.
dc.language.iso eng
dc.relation.ispartof Physical Review C, 2014, vol. 90, num. 2, p. 025208-1-025208-8
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Aceti, Francesca Oset Báguena, Eulogio Roca Zamora, Luis 2014 Composite nature of the Lambda (1520) resonance Physical Review C 90 2 025208-1 025208-8
dc.subject Física
dc.title Composite nature of the Lambda (1520) resonance
dc.type info:eu-repo/semantics/article
dc.date.updated 2016-04-22T07:28:19Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevC.90.025208
dc.identifier.idgrec 102048

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