Eur. Phys. J. A (2018) 54: 228
https://doi.org/10.1140/epja/i2018-12658-3

Regular Article - Theoretical Physics

On the spreading width of isobaric analog resonances

¹ National Research Nuclear University “MEPhI”, 115409, Moscow, Russia
² Moscow Economic School, 123022, Moscow, Russia

^* e-mail: urin@theor.mephi.ru

Received: 18 May 2018
Accepted: 20 November 2018
Published online: 24 December 2018

Abstract

A description of the spreading width of isobaric analog resonances in medium-heavy spherical nuclei is proposed. The approach incorporates the “Coulomb description” of isospin-forbidden processes into the newly developed particle-hole dispersive optical model. Within this approach, the observed spreading width of the resonances based on the ^{208, 209}Pb parent-nuclei ground states is quantitatively estimated with no adjustable parameters.