Spatial diquark correlations in a hadron

Understand

Using lattice QCD, a diquark can be studied in a gauge-invariant manner by binding it to a static quark in a heavy-light-light hadron.

• We compute the simultaneous two-quark density of a diquark, including corrections for periodic boundary conditions.
• We define a correlation function to isolate the intrinsic correlations of the diquark and reduce the effects caused by the presence of the static quark.
• Away from the immediate vicinity of the static quark, the diquark has a consistent shape, with much stronger correlations seen in the good (scalar) diquark than in the bad (vector) diquark.