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http://hdl.handle.net/2445/21043
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DC Field | Value | Language |
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dc.contributor.author | Oset Baguena, Eulogio | cat |
dc.contributor.author | Ramos Gómez, Àngels | cat |
dc.date.accessioned | 2011-12-07T12:25:25Z | - |
dc.date.available | 2011-12-07T12:25:25Z | - |
dc.date.issued | 2011-10-19 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/2445/21043 | - |
dc.description.abstract | We study the eta'N interaction within a chiral unitary approach which includes piN , etaN and related pseudoscalar meson-baryon coupled channels. Since the SU(3) singlet does not contribute to the standard interaction and the eta' is mostly a singlet, the resulting scattering amplitude is very small and inconsistent with experimental estimations of the eta' N scattering length. The additional consideration of vector meson-baryon states into the coupled channel scheme, via normal and anomalous couplings of pseudoscalar to vector mesons, enhances substantially the eta' N amplitude. We also exploit the freedom of adding to the Lagrangian a new term, allowed by the symmetries of QCD, which couples baryons to the singlet meson of SU(3). Adjusting the unknown strength to the eta' N scattering length, we obtain predictions for the elastic eta'N -> etaN and inelastic eta' N -> etaN , piN , KLambda, KEpsilon cross sections at low eta' energies, and discuss their significance. | eng |
dc.format.extent | 15 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | eng |
dc.publisher | Elsevier B. V. | - |
dc.relation.isformatof | Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.physletb.2011.09.025 | cat |
dc.relation.ispartof | Physics Letters B, 2011, Vol. 704, núm. 4, p. 334-342 | - |
dc.relation.uri | http://dx.doi.org/10.1016/j.physletb.2011.09.025 | - |
dc.rights | (c) Elsevier B. V., 2011 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Cromodinàmica quàntica Partícules (Física nuclear) | cat |
dc.subject.classification | Mesons (Física nuclear) | cat |
dc.subject.classification | Reaccions nuclears | cat |
dc.subject.other | Quantum chromodynamics | eng |
dc.subject.other | Mesons (Nuclear physics) | eng |
dc.subject.other | Nuclear reactions | eng |
dc.title | Chiral unitary approach to eta'N scattering at low energies | eng |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 598756 | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/227431/EU//HADRONPHYSICS2 | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Publicacions de projectes de recerca finançats per la UE |
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File | Description | Size | Format | |
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598756.pdf | 292.33 kB | Adobe PDF | View/Open |
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