Production of multicharmed hadrons by recombination in heavy ion collisions

2019/07/31 by Sungtae Cho, Su Houng Lee
Physics and Astronomy · #Baryon #Charm quark #Coalescence (physics) #Hadron #Hadronization #Heavy ion #High-Energy Particle Collisions Research #Ion #Meson #Nuclear physics #Omega #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevc.101.024902

published as Phys. Rev. C 101, 024902 (2020) · 20 pages, 9 figures

arxiv created 2019/08/06 · openalex created_date 2019/08/13 · openalex publication_date 2020/02/04 · arxiv updated 2020/02/12 · openalex updated_date 2026/08/05

Abstract

We study the production of multicharmed hadrons by recombination in heavy ion collisions by focusing on the production of \mathrm\ensuremathΞ_cc,\mathrm\ensuremathΞ_cc^*,\mathrm\ensuremathΩ_scc,\mathrm\ensuremathΩ_scc^*,\mathrm\ensuremathΩ_ccc baryons and X(3872) mesons. Starting from the estimation of yields for those hadrons at chemical freeze-out in both the statistical and coalescence models, we evaluate their transverse momentum distributions at midrapidity in the coalescence model. Considering the experimental measurements of weakly decaying singly charmed hadrons we find that yields of multicharmed hadrons in heavy ion collisions at RHIC and LHC are large enough, and thereby not only multicharmed hadrons observed so far, e.g., the \mathrm\ensuremathΞ_cc, but also those which have not been observed yet, can be discovered in heavy ion collisions. We also find that the transverse momentum distribution ratio between various multicharmed hadrons sensitively reflects the interplay between quark contents of corresponding hadrons as well as the transverse momentum distribution of charm quarks at the hadronization point, and therefore we insist that studying both the transverse momentum distributions of multicharmed hadrons themselves and transverse momentum distribution ratios between various multicharmed hadrons provide us with useful information on hadron production mechanism involving charm quarks in heavy ion collisions.

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