Dressed-quarks and the Roper resonance
Nuclear Theory
2015-05-30 v1 High Energy Physics - Lattice
High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
A Dyson-Schwinger equation calculation of the light hadron spectrum, which correlates the masses of meson and baryon ground- and excited-states within a single framework, produces a description of the Roper resonance that corresponds closely with conclusions drawn recently by EBAC. Namely, the Roper is a particular type of radial excitation of the nucleon's dressed-quark core augmented by a material meson cloud component. There are, in addition, some surprises.
Keywords
Cite
@article{arxiv.1108.1327,
title = {Dressed-quarks and the Roper resonance},
author = {Craig D. Roberts and Ian C. Cloet and Lei Chang and Hannes L. L. Roberts},
journal= {arXiv preprint arXiv:1108.1327},
year = {2015}
}
Comments
4 pages, 3 figures. Contribution to the Proceedings of "NSTAR2011 - The 8th International Workshop on the Physics of Excited Nucleons," Thomas Jefferson National Accelerator Facility, Newport News, Virginia USA, 17-20 May 2011