  Utilizing a quark model characterized by parameters that effectively
replicate the masses of ground state hadrons, we illustrate that $(us)$ or
$(ds)$ diquarks exhibit greater compactness in comparison to $(ud)$ diquarks.
Concretely, the binding energy of the $(us)$ diquark - defined as the diquark's
mass minus the combined masses of its individual quarks - is found to be
stronger than that of the $(ud)$ diquark. This heightened attraction present in
$(us)$ diquarks could lead to enhanced production of $\Xi_c/D$ particles in
high-energy pp or ultrarelativistic heavy-ion collisions.
