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http://hdl.handle.net/2445/12810
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DC Field | Value | Language |
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dc.contributor.author | Ramos Gómez, Àngels | cat |
dc.contributor.author | Oset Baguena, Eulogio | cat |
dc.contributor.author | Bennhold, Cornelius | cat |
dc.date.accessioned | 2010-06-09T12:45:58Z | - |
dc.date.available | 2010-06-09T12:45:58Z | - |
dc.date.issued | 2002 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/12810 | - |
dc.description.abstract | Using a unitary extension of chiral perturbation theory with a lowest-order s -wave SU(3) chiral Lagrangian we study low-energy meson-baryon scattering in the strangeness S = − 2 sector. A scattering-matrix pole is found around 1605 MeV which corresponds to an s -wave Ξ resonance with J P = 1 / 2 − . We identify this resonance with the Ξ ( 1620 ) state, quoted by the Particle Data Group with I = 1 / 2 but with unknown spin and parity. The addition of the S = − 2 state to the recently computed Λ ( 1670 ) , Σ ( 1620 ) , and N ( 1535 ) states completes the octet of J P = 1 / 2 − resonances dynamically generated in this chiral unitary approach. | - |
dc.format.extent | 4 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | eng |
dc.publisher | American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.89.252001 | cat |
dc.relation.ispartof | Physical Review Letters, 2002, vol. 89, núm. 25, p. 252001-1-252001-4 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevLett.89.252001 | - |
dc.rights | (c) American Physical Society, 2002 | eng |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Partícules (Matèria) | cat |
dc.subject.classification | Spin (Física nuclear) | cat |
dc.subject.other | Particles | eng |
dc.subject.other | Nuclear spin | eng |
dc.title | Spin, parity and nature of the Xi(1620) resonance | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 505051 | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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505051.pdf | 97.2 kB | Adobe PDF | View/Open |
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