The Landau-Migdal parameter and quenching factor from the analysis of the Gamow-Teller strength distributions in medium-heavy-mass doubly-closed-shell parent nuclei

TL;DR

This paper determines the Landau-Migdal parameter and quenching factor for Gamow-Teller strength distributions in medium-heavy doubly-closed-shell nuclei by comparing experimental data with theoretical models.

Contribution

It provides new estimates of the Landau-Migdal parameter and quenching factor based on detailed analysis of experimental and theoretical Gamow-Teller strength distributions.

Findings

Values of the Landau-Migdal parameter are derived for specific nuclei.

Quenching factors are quantified for the studied nuclei.

Comparison with previous studies shows consistency and differences.

Abstract

The Landau-Migdal parameter and quenching factor for the Gamow-Teller strength distributions in the 48Ca, 90Zr, 132Sn and 208Pb parent nuclei are deduced from a detailed comparison of experimental distributions (obtained for the \b{eta}^((-)) -channel) with respective strength functions evaluated within the semi-microscopic Particle-Hole Dispersive Optical Model. The deduced values are compared with the values obtained in other studies.