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http://hdl.handle.net/2445/44086
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DC Field | Value | Language |
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dc.contributor.author | Nagahiro, H. | - |
dc.contributor.author | Hirenzaki, S. | - |
dc.contributor.author | Oset Baguena, Eulogio | - |
dc.contributor.author | Ramos Gómez, Àngels | - |
dc.date.accessioned | 2013-06-06T10:50:15Z | - |
dc.date.available | 2013-06-06T10:50:15Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/2445/44086 | - |
dc.description.abstract | Starting from a recent model of the η′N interaction, we evaluate the η ′-nucleus optical potential, including the contribution of lowest order in density, tρ/2mη′, together with the second-order terms accounting for η′ absorption by two nucleons. We also calculate the formation cross section of the η′bound states from (π, p) reactions on nuclei. The η′-nucleus potential suffers from uncertainties tied to the poorly known η′N interaction, which can be partially constrained by the experimental modulus of the η′N scattering length and/or the recently measured transparency ratios in η′nuclear photoproduction. Assuming an attractive interaction and taking the claimed experimental value |aη′N|= 0.1 fm, we obtain an η′optical potential in nuclear matter at saturation density of Vη′=−(8.7 + 1.8i) MeV, not attractive enough to produce η′bound states in light nuclei. Larger values of the scattering length give rise to deeper optical potentials, with moderate enough imaginary parts. For a value |aη′N|= 0.3 fm, which can still be considered to lie within the uncertainties of the experimental constraints, the spectra of light and medium nuclei show clear structures associated to η′-nuclear bound states and to threshold enhancements in the unbound region. | - |
dc.format.extent | 11 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2012.01.061 | - |
dc.relation.isformatof | Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.physletb.2012.01.061 | - |
dc.relation.ispartof | Physics Letters B, 2012, vol. 709, num. 1-2, p. 87-92 | - |
dc.relation.uri | http://dx.doi.org/10.1016/j.physletb.2012.01.061 | - |
dc.rights | (c) Elsevier B.V., 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física nuclear | - |
dc.subject.classification | Hadrons | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.classification | Constitució de la matèria | - |
dc.subject.other | Nuclear physics | - |
dc.subject.other | Hadrons | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.subject.other | Constitution of matter | - |
dc.title | η'-nucleus optical potential and possible η' bound states | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 607051 | - |
dc.date.updated | 2013-06-06T10:50:15Z | - |
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 |
Files in This Item:
File | Description | Size | Format | |
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607051.pdf | 353.39 kB | Adobe PDF | View/Open |
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