TY - JOUR TI - Initial state interaction for the20 ne +130 te and18 o +116 sn systems at 15.3 amev from elastic and inelastic scattering measurements AU - Carbone, D. AU - Linares, R. AU - Amador-Valenzuela, P. AU - Calabrese, S. AU - Cappuzzello, F. AU - Cavallaro, M. AU - Firat, S. AU - Fisichella, M. AU - Spatafora, A. AU - Acosta, L. AU - Agodi, C. AU - Boztosun, I. AU - Brischetto, G.A. AU - Calvo, D. AU - Chávez Lomelí, E.R. AU - Ciraldo, I. AU - Cutuli, M. AU - Delaunay, F. AU - Deshmukh, N. AU - Finocchiaro, P. AU - Foti, A. AU - Hacisalihoglu, A. AU - Iazzi, F. AU - La Fauci, L. AU - Lanzalone, G. AU - Medina, N.H. AU - Mendes, D. AU - Oliveira, J.R.B. AU - Pakou, A. AU - Pandola, L. AU - Petrascu, H. AU - Pinna, F. AU - Russo, G. AU - Sgouros, O. AU - Solakci, S.O. AU - Soukeras, V. AU - Souliotis, G. AU - Torresi, D. AU - Tudisco, S. AU - Yildirim, A. AU - Zagatto, V.A.B. AU - NUMEN collaboration JO - Princeton University Bulletin PY - 2021 VL - 7 TODO - 3 SP - null PB - MDPI AG SN - null TODO - 10.3390/universe7030058 TODO - null TODO - Double charge exchange (DCE) reactions could provide experimentally driven information about nuclear matrix elements of interest in the context of neutrinoless double-β decay. To achieve this goal, a detailed description of the reaction mechanism is mandatory. This requires the full characterization of the initial and final-state interactions, which are poorly known for many of the projectile-target systems involved in future DCE studies. Among these, we intend to study the20 Ne +130 Te and18 O +116 Sn systems at 15.3 AMeV, which are particularly relevant due to their connection with the130 Te→130 Xe and116 Cd→116 Sn double-β decays. We measure the elastic and inelastic scattering cross-section angular distributions and compare them with theoretical calculations performed in the optical model, one-step distorted wave Born approximation, and coupled-channel approaches using the São Paulo double-folding optical potential. A good description of the experimental data in the whole explored range of transferred momenta is obtained provided that couplings with the 2+1 states of the projectile and target are explicitly included within the coupled-channel approach. These results are relevant also in the analysis of other quasi-elastic reaction channels in these systems, in which the same couplings should be included. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. ER -