More about the light baryon spectrum

Abstract

We discuss the light baryon spectrum obtained from a recent quark-diquark calculation, implementing non-pointlike diquarks that are self-consistently calculated from their Bethe-Salpeter equations. We examine the orbital angular momentum content in the baryons' rest frame and highlight the fact that baryons carry all possible values of L compatible with their spin, without the restriction P=(-1)^L which is only valid nonrelativistically. We furthermore investigate the meaning of complex conjugate eigenvalues of Bethe-Salpeter equations, their possible connection with 'anomalous' states, and we propose a method to eliminate them from the spectrum.

arXiv comment9 pages, 4 figures. Presented at Light Cone 2016, September 5-8 2015, IST, Universidade de Lisboa, Lisbon, Portugal

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Cited by in corpus (15)

• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Spectrum of light- and heavy-baryons
• Light Baryon Spectroscopy
• The analytic properties of the quark propagator from an effective infrared interaction model
• Parity partners in the baryon resonance spectrum
• Nucleon elastic form factors at accessible large spacelike momenta
• Transition form factors: ${\gamma }^{\ast }+p\to \Delta (1232)$, $\Delta (1600)$
• Spectrum and structure of octet and decuplet baryons and their positive-parity excitations
• Aspects of open-flavour mesons in a comprehensive DSBSE study
• Spectroscopy of light $N^{\ast }$ baryons
• Relativistic effects in the semileptonic $B_c$ decays to charmonium with the Bethe-Salpeter method
• Theory introduction to baryon spectroscopy
• Quasi-exotic open-flavor mesons
• Heavy baryon spectroscopy in a quark-diquark approach
• Nucleon resonances with spin $\frac{3}{2}$ and isospin $\frac{1}{2}$