Work

Colloquium : Roper resonance: Toward a solution to the fifty year puzzle

Year: 2019

Type: article

Abstract: The Roper resonance in the strong interaction spectrum has defied understanding for over 50 years. This puzzling unstable particle appears to be an exact copy of the proton except that its mass is 50% greater. In modern terms, the Roper resonance is the proton's lightest radial excitation, consisting of a dressed-quark core augmented by a cloud of mesons. This Colloquium describes the experimental and theoretical developments that have enabled the picture of the Roper resonance to be drawn.

Source: Reviews of Modern Physics

DOI: 10.1103/revmodphys.91.011003

Authors: Volker D. Burkert, Craig D. Roberts

Institution: Thomas Jefferson National Accelerator Facility

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Office of Science, Nuclear Physics

Awards: G102163711, G2263355576