2011/04/30 by Ning Lee, Zhi-Gang Luo, Xiao-Lin Chen +1 · 88 citations
Physics and Astronomy · #Baryon #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.84.014031
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 84(1) (American Physical Society) · 17 pages, 32 figures
openalex publication_date 2011/07/25 · arxiv created 2011/08/05 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We perform a systematic study of the possible loosely bound states composed of two charmed baryons or a charmed baryon and an anticharmed baryon within the framework of the one-boson-exchange model. We consider not only the \ensuremathπ exchange but also the \ensuremathη, \ensuremathρ, \ensuremathω, \ensuremathφ, and \ensuremathσ exchanges. The S\ensuremath-D mixing effects for the spin triplets are also taken into account. With the derived effective potentials, we calculate the binding energies and rms radii for the systems \ensuremathΛc\ensuremathΛc(\ensuremathΛc), \ensuremathΞc\ensuremathΞc(\ensuremathΞc), \ensuremathΣc\ensuremathΣc(\ensuremathΣc), \ensuremathΞc^\ensuremath'\ensuremathΞc^\ensuremath'(\ensuremathΞc^\ensuremath'), and \ensuremathΩc\ensuremathΩc(\ensuremathΩc). Our numerical results indicate that (1) the H-dibaryonlike state \ensuremathΛc\ensuremathΛc does not exist and (2) there may exist four loosely bound deuteronlike states for the \ensuremathΞc\ensuremathΞc and \ensuremathΞc^\ensuremath'\ensuremathΞc^\ensuremath' systems with small binding energies and large rms radii.