Dressed-quarks and the Roper resonance

Details Dressed-quarks and the Roper resonance Dressed-quarks and the Roper resonance

2011-08-05

arxiv.org/abs/1108.1327v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures. Contribution to the Proceedings of "NSTAR2011 - The 8th International Workshop on the Physics of Excited N

Scientific paper

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.

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