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The mass of the nucleon in a chiral quark-diquark model

K. Nagata·A. Hosaka·L. J. Abu-Raddad
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Abstract

The mass of the nucleon is studied in a chiral quark-diquark model. Both scalar and axial-vector diquarks are taken into account for the construction of the nucleon state. After the hadronization procedure to obtain an effective meson-baryon Lagrangian, the quark-diquark self-energy is calculated in order to generate the baryon kinetic term as well as the mass of the nucleon. It turns out that both the scalar and axial-vector parts of the self-energy are attractive for the mass of the nucleon. We investigate the range of parameters that can reproduce the mass of the nucleon.

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K. Nagata, A. Hosaka, L. J. Abu-Raddad. 2005-12-10. The mass of the nucleon in a chiral quark-diquark model. https://doi.org/10.1103/physrevc.72.035208%2010.1103%2Fphysrevc.73.049903

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