We study good, bad and not-even-bad diquarks on the lattice in a gauge-invariant formalism in full QCD. We establish their spectral masses with short extrapolations to the physical point, observing agreement with phenomenological expectations. We find that only the good diquark has attractive quark-quark spatial correlations, with spherical shape and size ~ 0:6 fm. Our results provide quantitative support for modelling the low-lying baryon spectrum using good light diquark effective degrees of freedom.
|出版狀態||Published - 2021|
|事件||19th International Conference on Hadron Spectroscopy and Structure, Hadron 2021 - Mexico City, Mexico|
持續時間: 26 7月 2021 → 1 8月 2021