Izvorni znanstveni članak
Nucleon static properties in a Tamm-Dancoff inspired approximation
Dubravko Horvat
; Department of Physics, Faculty of Electrical Engineering and Computing, University of Zagreb, 10000 Zagreb, Croatia
Boris Podobnik
; Department of Physics, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia
Dubravko Tadić
; Department of Physics, University of Zagreb, Bijenička cesta 32, 10000 Zagreb, Croatia
Sažetak
A version of the chiral bag model, which contains the linear σ-model dynamics and is quantized by using the constituent quark operators, has been solved using a Tamm-Dancoff inspired approximation. Model gives reasonable values for the axial coupling constant gA = Δu-Δd = 1.28, for the combination hAS = Δu+Δd = 0.38, and for the proton magnetic moment μp = 2.77. These values, which match the combinations Δu±Δd of the quark density functions, are consequences of the chiral character of the model.
Ključne riječi
chiral bag model; the linear s-model dynamics; constituent quark operators; Tamm-Dancoff approximation; axial coupling constant; proton magnetic moment; chirality
Hrčak ID:
303819
URI
Datum izdavanja:
2.8.1998.
Posjeta: 455 *