Constituent Quarks, Diquarks and the N-Delta Mass Splitting
arXiv:hep-lat/9809011 · doi:10.1016/S0920-5632(99)85026-9
Abstract
We analyze hadron as well as quark and diquark correlation functions in Landau gauge in order to extract information on the spin dependence of the quark-quark interaction. We find evidence that the N-Delta mass splitting can be attributed to the spin dependence of the interaction between quarks in a colour anti-triplet state with spin 0 and 1, respectively. The lightest excitations are observed in the S=0 channel. However, no evidence for a deeply bound diquark state is found.
LATTICE98(spectrum), 3 pages, LaTeX2e File, 4 EPS-figures, espcrc2.sty