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arXiv · 1707.05650

Regge trajectories of Excited Baryons, quark-diquark models and quark-hadron duality

Pere Masjuan·Enrique Ruiz Arriola
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Abstract

The parton model relations in conjunction with quark-hadron duality in deep inelastic scattering suggests an asymptotic dominance of quark-diquark type of baryonic excited states with a radial Regge uniformly distributed mass squared spectrum $M_{n}^2 = \mu^2 n + M_0^2$. We argue that this points to a lineary quark-diquark confining potential. We analyze the radial ($n$) and angular-momentum ($J$) Regge trajectories for all light-quark states with baryon number one listed in the 2016 edition of the Particle Data Tables. The parameters of the mass squared trajectories are obtained by linear regression assuming $\Delta M_n^2 \sim M_n \Gamma_n $ weighted with the width $\Gamma_n$ of the resonance and the error analysis is carried out accordingly.

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Pere Masjuan, Enrique Ruiz Arriola. 2017-07-18. Regge trajectories of Excited Baryons, quark-diquark models and quark-hadron duality. https://doi.org/10.1103/physrevd.96.054006

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