Unitary coupled channel study of the {lambda}(1520) resonance

Journal Article · Sat Feb 11 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2176490· OSTI ID:20798077

Roca, L; Magas, V K; Oset, E; Sarkar, Sourav ^[1]

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1. Departamento de Fisica Teorica, Institutos de Investigacion de Paterna, Aptdo. 22085, 46071 Valencia (Spain)

We study the {lambda}(1520) resonance in a coupled channel approach involving the {pi}{sigma}(1385), K{xi}(1530), K-barN and {pi}{sigma} channels. Implementing unitarity in coupled channels, we make an analysis of the relative importance of the different mechanisms which 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-p {yields} {lambda}{pi}{pi}, {gamma}p {yields} K+K-p, {gamma}p {yields} K+{pi}0{pi}0{lambda} and {pi}-p {yields} K0K-p and find a fair agreement with the experimental data.

• OSTI ID: 20798077
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 814; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COUPLED CHANNEL THEORY
KAON-HYPERON INTERACTIONS
KAONS
LAMBDA-1520 BARYONS
NUCLEONS
PARTIAL WAVES
PARTICLE PROPERTIES
PION-HYPERON INTERACTIONS
RESONANCE PARTICLES
SIGMA BARYONS
UNITARITY
XI BARYONS