RT Journal Article
T1 Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei
T2 Excitation of [Delta] and N* resonances in isobaric charge-exchange reactions of heavy nuclei
A1 Vidaña, I.
A1 Benlliure Anaya, José Fernando
A1 Geissel, Hans
A1 Lenske, Horst
A1 Scheidenberger, C.
A1 Vargas, J.
AB 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.
PB EDP Sciences
YR 2016
FD 2016
LK http://hdl.handle.net/10347/15899
UL http://hdl.handle.net/10347/15899
LA eng
NO I Vidaña, J. Benlliure, H. Geissel, H. Lenske, C. Scheidenberger and J. Vargas. Excitation of Δ and N* resonances in isobaric charge-exchange reactions of heavy nuclei. EPJ Web of Conferences, v. 107 (2016), 10003. DOI: https://doi.org/10.1051/epjconf/201610710003
NO This work is partly supported by the project PEst-OE/FIS/UI0405/2014 developed under the initiative QREN financed by the UE/FEDER throught the program COMPETE-“Programa Operacional Factores de Competitividade”,and by “NewCompstar”, COST Action MP1304
DS Minerva
RD 24 abr 2026