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http://hdl.handle.net/2445/129966
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DC Field | Value | Language |
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dc.contributor.author | Montaña Faiget, Glòria | - |
dc.contributor.author | Feijoo Aliau, Albert | - |
dc.contributor.author | Ramos Gómez, Àngels | - |
dc.date.accessioned | 2019-03-08T14:04:50Z | - |
dc.date.available | 2019-04-25T05:10:27Z | - |
dc.date.issued | 2018-04-25 | - |
dc.identifier.issn | 1434-6001 | - |
dc.identifier.uri | http://hdl.handle.net/2445/129966 | - |
dc.description.abstract | We explore the possibility that some of the five narrowΩcresonances recently observed at LHCbcould correspond to pentaquark states, structured as meson-baryon bound states or molecules. The inter-action of the low-lying pseudoscalar mesons with the ground-state baryons in the charm +1, strangeness−2 and isospin 0 sector is built from t-channel vector meson exchange, using effective Lagrangians. Theresulting s-wave coupled-channel unitarized amplitudes show the presence of two structures with similarmasses and widths to those of the observedΩc(3050)0andΩc(3090)0. The identification of these reso-nances with the meson-baryon bound states found in this work would also imply assigning the values 1/2−for their spin-parity. An experimental determination of the spin-parity of theΩc(3090)0would contributeto a better understanding of its structure, as the quark-based models predict its spin-parity to be either3/2−or 5/2−. Predictions for the analogue bottomΩ−bresonances are also given. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Società Italiana di Fisica & Springer Verlag | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1140/epja/i2018-12498-1 | - |
dc.relation.ispartof | European Physical Journal A, 2018, vol. 54, num. 4, p. 64 | - |
dc.relation.uri | https://doi.org/10.1140/epja/i2018-12498-1 | - |
dc.rights | (c) Società Italiana di Fisica & Springer Verlag, 2018 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Barions | - |
dc.subject.classification | Quarks | - |
dc.subject.other | Baryons | - |
dc.subject.other | Quarks | - |
dc.title | A meson-baryon molecular interpretation for some (Ωc) excited states | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 687705 | - |
dc.date.updated | 2019-03-08T14:04:50Z | - |
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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687705.pdf | 533.75 kB | Adobe PDF | View/Open |
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