60\textsuperscript {th} Anniversary of the “Roper Resonance” Discovery
Abstract
The Roper resonance was discovered in L. David Roper’s Ph.D. thesis research at MIT with Prof. Bernard T. Feld as advisor, with the extensive computing done at Livermore Radiation Laboratory with Dr. Michael J. Moravcsik and programmer Robert M. Wright. The basic coding was taken from the nucleon–nucleon coding of Dr. Richard A. Arndt. Despite the fact of a negative scattering length, which had led to thinking that there would be no \(P_{11}\) resonance, the computer code and large amount of data at that time insisted that the resonance existed. This article discusses some features, including the serendipity, of the discovery and of the unusual Roper resonance. Abstract Published by the Jagiellonian University 2026 authors
Fields of Study & Subjects
Quantum Chromodynamics and Particle Interactions
Nuclear physics research studies
Particle physics theoretical and experimental studies
Publication details
- Journal / source
- Acta Physica Polonica B
- Volume
- 57
- Issue
- 2
- Pages
- 1–1
- Publication date
- 10 February 2026
- Language
- EN