Craig D. Roberts, Ian C. Cloet, Lei Chang, Hannes L. L. Roberts
Published 2011-08-05Version 1
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.
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
Electroexcitation of the Roper resonance in the relativistic quark models
The two pion decay of the Roper resonance
Role of the N*(1440) resonance in the pp->pnpi+ reaction
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