Quark and hadron degrees of freedom in the Roper resonance electroproduction

Abstract

The Roper resonance is considered as a mixed state of a three-quark core configuration and a hadron molecular component N +σ . Based on this ansatz we study electroproduction of the Roper resonance. The strong and electromagnetic couplings induced by the quark core are calculated in the ³P₀ model. The contribution of the vector meson cloud to the electromagnetic transition is given in the framework of the VMD model. Results are compared with the recent JLab electroproduction data.

Original language	English
Article number	061
Journal	Proceedings of Science
Volume	2012-January
Publication status	Published - 2012
Externally published	Yes

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title = "Quark and hadron degrees of freedom in the Roper resonance electroproduction",

abstract = "The Roper resonance is considered as a mixed state of a three-quark core configuration and a hadron molecular component N +σ . Based on this ansatz we study electroproduction of the Roper resonance. The strong and electromagnetic couplings induced by the quark core are calculated in the 3P0 model. The contribution of the vector meson cloud to the electromagnetic transition is given in the framework of the VMD model. Results are compared with the recent JLab electroproduction data.",

author = "Obukhovsky, {I. T.} and A. Faessler and Fedorov, {D. K.} and Th Gutsche and Lyubovitskij, {V. E.}",

year = "2012",

language = "English",

volume = "2012-January",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

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T1 - Quark and hadron degrees of freedom in the Roper resonance electroproduction

AU - Obukhovsky, I. T.

AU - Faessler, A.

AU - Fedorov, D. K.

AU - Gutsche, Th

AU - Lyubovitskij, V. E.

PY - 2012

Y1 - 2012

N2 - The Roper resonance is considered as a mixed state of a three-quark core configuration and a hadron molecular component N +σ . Based on this ansatz we study electroproduction of the Roper resonance. The strong and electromagnetic couplings induced by the quark core are calculated in the 3P0 model. The contribution of the vector meson cloud to the electromagnetic transition is given in the framework of the VMD model. Results are compared with the recent JLab electroproduction data.

AB - The Roper resonance is considered as a mixed state of a three-quark core configuration and a hadron molecular component N +σ . Based on this ansatz we study electroproduction of the Roper resonance. The strong and electromagnetic couplings induced by the quark core are calculated in the 3P0 model. The contribution of the vector meson cloud to the electromagnetic transition is given in the framework of the VMD model. Results are compared with the recent JLab electroproduction data.

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