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

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.

10 pages, 6 figures. Numerical errors are corrected. Accepted to Phys. Rev. C72 (2005) 035208

References in corpus (3)

• On Nucleon Electromagnetic Form Factors
• On Nucleon Electromagnetic Form Factors: A Pre'cis
• Structure of the nuclear force in a chiral quark-diquark model

Cited by in corpus (4)

• Chiral effective theory of diquarks and the U_A(1) anomaly
• The volume dependence of the long-range two-body potentials in various color channels by lattice QCD
• Two Nucleon-States in a Chiral Quark-Diquark Model
• Quartet of spin-3/2 baryons in chiral multiplet $(1,1/2)\oplus (1/2,1)$ with mirror assignment