https://doi.org/10.1140/epja/i2011-11003-x
Regular Article - Experimental Physics
Features of 
-induced collective resonances in nuclei
A semi-empirical model for collective nuclear resonances in the 
energy region
1
Joint Institute for Nuclear Research (JINR), Dubna, Russia
2
Dipartimento di Fisica Generale “A. Avogadro”, Università di Torino, Torino, Italy
3
INFN, Sezione di Torino, Torino, Italy
4
INFN, Gruppo collegato di Alessandria and Università del Piemonte Orientale, Alessandria, Italy
5
INFN, Gruppo collegato di Brescia and Università di Brescia, Brescia, Italy
6
Alikhanov Institute for Theoretical and Experimental Physics (ITEP), Moscow, Russia
7
Centro Studi e Ricerche “Enrico Fermi”, Roma, Italy
* e-mail: gnesi@to.infn.it
Received:
27
July
2010
Revised:
28
October
2010
Accepted:
26
November
2010
Published online:
6
January
2011
A semi-empirical model is presented for the excitation of collective nuclear resonances induced by pions on nuclei in the (1232) energy region. The physical features of the collective states have been extracted according to the model by fitting data from a collection of resonant -nucleus elastic scattering cross-sections. The contributions to the total binding energy and to the width of a collective state per each additional nucleon involved in the resonance have been extracted. The interaction between the collective resonances and the surrounding nuclear medium is discussed.
© SIF, Springer-Verlag Berlin Heidelberg, 2011
