Evidence for a spin-quartet of nucleon resonances at 2\,GeV

Abstract

Results from a multi-channel partial wave analysis of elastic and inelastic $\pi N$ and $\gamma N$ induced reactions are presented. The analysis evidences the existence of a spin-quartet of nucleon resonances with total angular momenta $J^P=1/2^{+},...,7/2^{+}$. All states fall into a $\pm 130$\,MeV mass gap centered at 1.97\,GeV. The spin quartet is at variance with S-wave diquark configurations required in classical di-quark models.

12 pages, 3 figures, 3 tables, reanalysis with improved errors

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Cited by in corpus (12)

• Nucleon resonances within a dynamical coupled-channels model of pi N and gamma N reactions
• High statistics study of the reaction $\gamma p\to p{\pi }^0\eta$
• Pion- and photo-induced transition amplitudes to $\Lambda K$, $\Sigma K$, and $N\eta$
• Effects of $N(2000)5/2^{+}$, $N(2060)5/2^{-}$, $N(2120)3/2^{-}$, and $N(2190)7/2^{-}$ on $K^{\ast }\Lambda$ photoproduction
• Cross sections for the $\gamma p\to K^{\ast +}\Lambda$ and $\gamma p\to K^{\ast +}{\Sigma }^0$ reactions measured at CLAS
• Sign ambiguity in the K Sigma channel
• Evidence for a negative-parity spin-doublet of nucleon resonances at 1.88\,GeV
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• $[70,{\mathbf{\ell }}^{+}]$ baryons in large $N_c$ QCD revisited: The effect on Regge trajectories
• First Measurement of ${\Xi }^{-}$ Polarization in Photoproduction
• Extraction of $t$-slopes from experimental $\gamma p\to K^{+}\Lambda$ and $\gamma p\to K^{+}{\Sigma }_0$ cross section data