The role of the Roper in QCD

S. R. Beane; U. Van Kolck

doi:10.1088/0954-3899/31/8/021

The role of the Roper in QCD

S. R. Beane, U. Van Kolck

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

We show that existing data suggest a simple scenario in which the nucleon and the Δ and Roper resonances act as chiral partners in a reducible representation of the full QCD chiral symmetry group. We discuss the peculiar interpretation of this scenario using spin-flavour symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-N_c expectations.

Original language	English (US)
Pages (from-to)	921-933
Number of pages	13
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	31
Issue number	8
DOIs	https://doi.org/10.1088/0954-3899/31/8/021
State	Published - Aug 1 2005
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1088/0954-3899/31/8/021

Cite this

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title = "The role of the Roper in QCD",

abstract = "We show that existing data suggest a simple scenario in which the nucleon and the Δ and Roper resonances act as chiral partners in a reducible representation of the full QCD chiral symmetry group. We discuss the peculiar interpretation of this scenario using spin-flavour symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-Nc expectations.",

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N2 - We show that existing data suggest a simple scenario in which the nucleon and the Δ and Roper resonances act as chiral partners in a reducible representation of the full QCD chiral symmetry group. We discuss the peculiar interpretation of this scenario using spin-flavour symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-Nc expectations.

AB - We show that existing data suggest a simple scenario in which the nucleon and the Δ and Roper resonances act as chiral partners in a reducible representation of the full QCD chiral symmetry group. We discuss the peculiar interpretation of this scenario using spin-flavour symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-Nc expectations.

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U2 - 10.1088/0954-3899/31/8/021

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M3 - Article

AN - SCOPUS:22544442184

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JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

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ER -

The role of the Roper in QCD

Abstract

ASJC Scopus subject areas

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