The Roper Resonance \(N^*(1440)\) in Nucleon–Nucleon Collisions and the Issue of Dibaryons
Abstract
In many reactions leading to excitations of the nucleon, the Roper resonance \(N^*(1440)\) can be sensed only very indirectly by complex partial-wave analyses. In nucleon–nucleon collisions the isoscalar single-pion production as well as specific two-pion production channels present the Roper excitation free of competing resonance processes at a mass of 1370 MeV and a width of 150 MeV. A detailed analysis points to the formation of \(N^*(1440)N\) dibaryonic systems during the nucleon–nucleon collision process similar to what is known from the \({\mit \Delta }(1232)N\) threshold. Abstract Published by the Jagiellonian University 2026 authors
Fields of Study & Subjects
Quantum Chromodynamics and Particle Interactions
Nuclear physics research studies
High-Energy Particle Collisions Research
Publication details
- Journal / source
- Acta Physica Polonica B
- Publisher
- Jagiellonian University
- Volume
- 57
- Issue
- 2
- Pages
- 1–1
- Publication date
- 10 February 2026
- Language
- EN