Charged-particle multiplicity dependence of charm-baryon-to-meson ratio in high-energy proton-proton collisions

We propose that the charged-particle multiplicity dependence of charm-baryon-to-meson ratio observed in high-energy $pp$ collisions can be explained by canonical treatment quantum charges statistical hadronization model (SHM). Taking full particle listings PDG complemented additional charm-baryon states from relativistic quark predictions, we evaluate partition function and charm-hadron chemical factors measure suppression arising requirement strict conservation charges. demonstrate that, while charm number induces common on production both charm-baryons -mesons, baryon (strangeness) causes further (charm-strange mesons) relative to nonstrange charm-mesons, thereby resulting a decreasing $\Lambda_c/D^0$ ($D_s/D^0$) toward smaller events. The thermal densities thus computed are then used as pertinent weights perform charm-quark fragmentation simulations yielding $p_T$-dependent $D_s/D^0$ ratios at varying multiplicities fair agreement with ALICE measurements.