Vector meson-baryon dynamics in photoproduction reactions around 2 GeV
We investigate the role of vector mesons and coupled-channel unitarization on photoproduction reactions o_ the proton at energies around 2 GeV. We explain the sudden drop on the γp → K0Σ+ cross section, observed recently by the CBELSA/TAPS collaboration, by a delicate interference between amplitudes...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2014-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20148105023 |
| _version_ | 1818778795338891264 |
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| author | Ramos A. Oset E. |
| author_facet | Ramos A. Oset E. |
| author_sort | Ramos A. |
| collection | DOAJ |
| description | We investigate the role of vector mesons and coupled-channel unitarization on photoproduction reactions o_ the proton at energies around 2 GeV. We explain the sudden drop on the γp → K0Σ+ cross section, observed recently by the CBELSA/TAPS collaboration, by a delicate interference between amplitudes having K*Λ and K*Σ intermediate states modulated by the presence of a nearby N* resonance produced by our model, a feature that we have employed to predict its properties. We also show the importance of coupled-channel unitarization in the γp → K*0Σ+ reaction, measured recently by CBELSA/TAPS and CLAS with conflicting results. |
| first_indexed | 2024-12-18T11:50:24Z |
| format | Article |
| id | doaj.art-262330e37c3647dda5d2e999689e637d |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T11:50:24Z |
| publishDate | 2014-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-262330e37c3647dda5d2e999689e637d2022-12-21T21:09:10ZengEDP SciencesEPJ Web of Conferences2100-014X2014-01-01810502310.1051/epjconf/20148105023epjconf_meson2014_05023Vector meson-baryon dynamics in photoproduction reactions around 2 GeVRamos A.0Oset E.1Departament d’Estructura i Constituents de la Materia and Institut de Ciències del Cosmos, Universitat de BarcelonaDepartamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de PaternaWe investigate the role of vector mesons and coupled-channel unitarization on photoproduction reactions o_ the proton at energies around 2 GeV. We explain the sudden drop on the γp → K0Σ+ cross section, observed recently by the CBELSA/TAPS collaboration, by a delicate interference between amplitudes having K*Λ and K*Σ intermediate states modulated by the presence of a nearby N* resonance produced by our model, a feature that we have employed to predict its properties. We also show the importance of coupled-channel unitarization in the γp → K*0Σ+ reaction, measured recently by CBELSA/TAPS and CLAS with conflicting results.http://dx.doi.org/10.1051/epjconf/20148105023 |
| spellingShingle | Ramos A. Oset E. Vector meson-baryon dynamics in photoproduction reactions around 2 GeV EPJ Web of Conferences |
| title | Vector meson-baryon dynamics in photoproduction reactions around 2 GeV |
| title_full | Vector meson-baryon dynamics in photoproduction reactions around 2 GeV |
| title_fullStr | Vector meson-baryon dynamics in photoproduction reactions around 2 GeV |
| title_full_unstemmed | Vector meson-baryon dynamics in photoproduction reactions around 2 GeV |
| title_short | Vector meson-baryon dynamics in photoproduction reactions around 2 GeV |
| title_sort | vector meson baryon dynamics in photoproduction reactions around 2 gev |
| url | http://dx.doi.org/10.1051/epjconf/20148105023 |
| work_keys_str_mv | AT ramosa vectormesonbaryondynamicsinphotoproductionreactionsaround2gev AT osete vectormesonbaryondynamicsinphotoproductionreactionsaround2gev |