Chiral quark model with configuration mixing

2000/12/31 by Harleen Dahiya, Manmohan Gupta · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.64.014013

published as Phys.Rev. D64 (2001) 014013 · 16 pages, LaTex, Table and Appendix added

arxiv created 2001/05/19 · openalex publication_date 2001/05/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The implications of one gluon exchange generated configuration mixing in the chiral quark model (\ensuremathχQM_gcm) with SU(3) and axial U(1) symmetry breakings are discussed in the context of proton flavor and spin structure as well as the hyperon \ensuremathβ-decay parameters. We find that the \ensuremathχQM_gcm with SU(3) symmetry breaking is able to give a satisfactory unified fit for spin and quark distribution functions, with the symmetry breaking parameters \ensuremathα=0.4, \ensuremathβ=0.7, and the mixing angle \ensuremathφ=20\ifmmode^∘\else\textdegree\fi, both for NMC and the most recent E866 data. In particular, the agreement with data, in the case of G_A/G_V, \ensuremathΔ₈, F, D, f_s and f₃/f₈, is quite striking.

Citations

• Phenomenological Lagrangians

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