Heavy flavor dibaryons

Abstract

We study the two-baryon system with two units of charm looking for the possible existence of a loosely bound state resembling the $H$ dibaryon. We make use of a chiral constituent quark model tuned in the description of the baryon and meson spectra as well as the $NN$ interaction. The presence of the heavy quarks makes the interaction simpler than in light baryon systems. We analyze possible quark-Pauli effects that would be present in spin-isospin saturated channels. Our results point to the non-existence of a charmed $H$-like dibaryon, although it may appear as a resonance above the ${\Lambda }_c{\Lambda }_c$ threshold.

Comments: 13 pages, 6 figures. To appear in Phys. Rev. D. arXiv admin note: text overlap with arXiv:1204.5502, arXiv:1507.08046