Few-Body Systems

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More About the Light Baryon Spectrum

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  1. Light Cone 2016


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.


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© Springer-Verlag Wien 2017

Authors and Affiliations

  1. 1.Institut für Theoretische PhysikJustus-Liebig-Universität GiessenGiessenGermany

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