dc.creator | Lenske, Horst | es |
dc.creator | Bellone, Jessica | es |
dc.creator | Colonna, Maria | es |
dc.creator | Gambacurta, Danilo | es |
dc.creator | Lay Valera, José Antonio | es |
dc.date.accessioned | 2024-07-11T10:40:53Z | |
dc.date.available | 2024-07-11T10:40:53Z | |
dc.date.issued | 2024-02-16 | |
dc.identifier.citation | Lenske, H., Bellone, J., Colonna, M., Gambacurta, D. y Lay Valera, J.A. (2024). Induced Isotensor Interactions in Heavy-Ion Double-Charge-Exchange Reactions and the Role of Initial and Final State Interactions. Universe, 10 (2), 93. https://doi.org/10.3390/universe10020093. | |
dc.identifier.issn | 2218-1997 | es |
dc.identifier.uri | https://hdl.handle.net/11441/161287 | |
dc.description.abstract | The role of initial state (ISI) and final state (FSI) ion–ion interactions in heavy-ion doublecharge-exchange (DCE) reactions A(Z, N) → A(Z ± 2, N ∓ 2) are studied for double single-chargeexchange (DSCE) reactions given by sequential actions of the isovector nucleon–nucleon (NN)
T-matrix. In momentum representation, the second-order DSCE reaction amplitude is shown to
be given in factorized form by projectile and target nuclear matrix elements and a reaction kernel
containing ISI and FSI. Expanding the intermediate propagator in a Taylor series with respect to
auxiliary energy allows us to perform the summation in the leading-order term over intermediate
nuclear states in closure approximation. The nuclear matrix element attains a form given by the
products of two-body interactions directly exciting the n
2 p
−2 and p
2n
−2 DCE transitions in the
projectile and the target nucleus, respectively. A surprising result is that the intermediate propagation
induces correlations between the transition vertices, showing that DSCE reactions are a two-nucleon
process that resembles a system of interacting spin–isospin dipoles. Transformation of the DSCE NN
T-matrix interactions from the reaction theoretical t-channel form to the s-channel operator structure
required for spectroscopic purposes is elaborated in detail, showing that, in general, a rich spectrum
of spin scalar, spin vector and higher-rank spin tensor multipole transitions will contribute to a
DSCE reaction. Similarities (and differences) to two-neutrino double-beta decay (DBD) are discussed.
ISI/FSI distortion and absorption effects are illustrated in black sphere approximation and in an
illustrative application to data. | es |
dc.description.sponsorship | MCIN/AEI/10.13039/501100011033 - PID2020-114687GB-I00 | es |
dc.format | application/pdf | es |
dc.format.extent | 27 p. | es |
dc.language.iso | eng | es |
dc.publisher | MDPI | es |
dc.relation.ispartof | Universe, 10 (2), 93. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | reaction theory | es |
dc.subject | nuclear many-body theory | es |
dc.subject | double-charge-exchange reactions | es |
dc.subject | double-beta decay | es |
dc.subject | induced interactions | es |
dc.subject | nuclear matrix elements | es |
dc.title | Induced Isotensor Interactions in Heavy-Ion Double-Charge-Exchange Reactions and the Role of Initial and Final State Interactions | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | PID2020-114687GB-I00 | es |
dc.relation.publisherversion | https://doi.org/10.3390/universe10020093 | es |
dc.identifier.doi | 10.3390/universe10020093 | es |
dc.journaltitle | Universe | es |
dc.publication.volumen | 10 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 93 | es |
dc.contributor.funder | Ministerio de Ciencia e Innovación (MICIN). España | es |
dc.contributor.funder | Agencia Estatal de Investigación. España | es |