Resonance width for a particle–core coupling model with a square-well potential. (11th February 2020)

• Record Type: Journal Article
• Authors: Hagino, K; Sagawa, H; Kanaya, S; Odahara, A
• Is Part Of: Progress of theoretical and experimental physics. Volume 2020:Number 2(2020)
• Publication Date: 2020-02-11
• Subjects: D13 -- D29; Physics -- Periodicals; Mathematical physics -- Periodicals; 530.05
• DOI: 10.1093/ptep/ptz163
• Languages: English
• ISSNs: 2050-3911

Abstract

Abstract: We derive a compact formula for the width of a multi-channel resonance state. To this end, we use a deformed square-well potential and solve the coupled-channels equations. We obtain the $S$ -matrix in the Breit–Wigner form, from which partial widths can be extracted. We apply the resultant formula to a deformed nucleus and discuss the behavior of partial width for an $s$ -wave channel.