Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei
We present a model for the study of the excitation of Δ(1232) and N*(1440) resonances in isobaric charge-exchange (AZ, A(Z ± 1)) reactions of heavy nuclei. Quasi-elastic and inelastic elementary processes contributing to the double differential cross sections of the reactions are described in terms...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/201610710003 |
| _version_ | 1818904676663296000 |
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| author | Vidaña I. Benlliure J. Geissel H. Lenske H. Scheidenberger C. Vargas J. |
| author_facet | Vidaña I. Benlliure J. Geissel H. Lenske H. Scheidenberger C. Vargas J. |
| author_sort | Vidaña I. |
| collection | DOAJ |
| description | We present a model for the study of the excitation of Δ(1232) and N*(1440) resonances in isobaric charge-exchange (AZ, A(Z ± 1)) reactions of heavy nuclei. Quasi-elastic and inelastic elementary processes contributing to the double differential cross sections of the reactions are described in terms of the exchange of virtual pions. The inelastic channel includes processes where the resonances are excited both in the target and in the projectile nucleus. We present results for reactions of 112Sn and 124Sn on different targets. Our results confirm that the position of the Δ peak is insensitive to targets with mass number A ≥ 12, and show that the origin of the Δ peak shift towards low excitation energies, with respect to its position in reactions with a proton target, can be easily explained in terms of the superposition of the different excitation mechanisms contributing to the reaction. |
| first_indexed | 2024-12-19T21:11:14Z |
| format | Article |
| id | doaj.art-fe2136a5dc8a4c7c8540153b09a4f2bb |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T21:11:14Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-fe2136a5dc8a4c7c8540153b09a4f2bb2022-12-21T20:05:29ZengEDP SciencesEPJ Web of Conferences2100-014X2016-01-011071000310.1051/epjconf/201610710003epjconf_nsrt2016_10003Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nucleiVidaña I.0Benlliure J.1Geissel H.2Lenske H.3Scheidenberger C.4Vargas J.5CFisUC, Department of Physics, University of CoimbraDepartamento de Física de Partículas. Universidade de Santiago de CompostelaGSI Helmholtzzentrum für Schwerionenforschung GmbHInstitut für Theoretische Physik, Universität, GiessenGSI Helmholtzzentrum für Schwerionenforschung GmbHDepartamento de Física de Partículas. Universidade de Santiago de CompostelaWe present a model for the study of the excitation of Δ(1232) and N*(1440) resonances in isobaric charge-exchange (AZ, A(Z ± 1)) reactions of heavy nuclei. Quasi-elastic and inelastic elementary processes contributing to the double differential cross sections of the reactions are described in terms of the exchange of virtual pions. The inelastic channel includes processes where the resonances are excited both in the target and in the projectile nucleus. We present results for reactions of 112Sn and 124Sn on different targets. Our results confirm that the position of the Δ peak is insensitive to targets with mass number A ≥ 12, and show that the origin of the Δ peak shift towards low excitation energies, with respect to its position in reactions with a proton target, can be easily explained in terms of the superposition of the different excitation mechanisms contributing to the reaction.http://dx.doi.org/10.1051/epjconf/201610710003 |
| spellingShingle | Vidaña I. Benlliure J. Geissel H. Lenske H. Scheidenberger C. Vargas J. Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei EPJ Web of Conferences |
| title | Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei |
| title_full | Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei |
| title_fullStr | Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei |
| title_full_unstemmed | Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei |
| title_short | Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei |
| title_sort | excitation of δ and n resonances in isobaric charge exchange reactions of heavy nuclei |
| url | http://dx.doi.org/10.1051/epjconf/201610710003 |
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