Quarkdiquark systematics of baryons and the su(6) symmetry for light states

A. V. Anisovich, V. V. Anisovich, M. A. Matveev, V. A. Nikonov, A. V. Sarantsev, T. O. Vulfs

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We continue our attempts to systematize baryons, which are composed of light quarks (q = ν, d), as quark-diquark systems. The notion of two diquarks is used: (i) D11, with the spin SD = 1 and isospin ID = 1 and (ii)00with SD = 0 and ID = 0. Here we try to resolve the problem of the low-lying Δ(5-/2) states: in the last experiments the lightest state is observed at ≳2200 MeV, not at 1900-2000 MeV as it has been stated 20 years ago. We are looking for different systematization variants with the forbidden low-lying Δ(5-/2) states in the mass region ≲2000 MeV. We see that the inclusion of the SU(6) constraints on qD 11 states with angular momentum L = 1 results in a shift of the lightest Δ(5-/2) isobar to ∼2300 MeV. The scheme with the SU(6) constraints for low-lying qD11 and qD00 states (with L = 0, 1) is presented in detail.

Original languageEnglish
Pages (from-to)3155-3171
Number of pages17
JournalInternational Journal of Modern Physics A
Issue number16
StatePublished - 30 Jun 2010
Externally publishedYes


  • Quark model
  • baryon
  • diquark
  • systematics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics


Dive into the research topics of 'Quarkdiquark systematics of baryons and the su(6) symmetry for light states'. Together they form a unique fingerprint.

Cite this