New Relations for Excited Baryons in Large-[Formula presented] QCD

Thomas D. Cohen, Richard Lebed

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We show that excited baryons in large-[Formula presented] QCD form multiplets, within which masses are first split at [Formula presented]. The dominant couplings of resonances to various mesons are highly constrained: The [Formula presented] decays at leading [Formula presented] order exclusively to [Formula presented] rather than [Formula presented], and vice versa for the [Formula presented]. This multiplet structure is reproduced by a simple large-[Formula presented] quark model, well studied in the literature, that describes resonances as single-quark excitations.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number1
DOIs
StatePublished - Jul 2 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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