Year: 2025
Type: article
Abstract: We present the ground-state energy spectra of dibaryons composed of single-flavor quarks, specifically systems with strangeness S = − 6 and charm C = 6 . Our lattice QCD study is based on N f = 2 + 1 + 1 MILC ensembles with highly improved staggered quark sea quarks, spanning four lattice spacings and two spatial volumes. We employ valence quark propagators realized using a relativistic overlap action, evaluate correlation matrices with carefully designed operator bases, and extract reliable ground-state energy estimates in the S = 0 and S = 2 spin channels. We explore their binding characteristics and interaction dynamics by examining the energy separation between the dibaryon states and the corresponding two-baryon thresholds. These results contribute to a deeper understanding of single-flavor dibaryon states as a function of the quark masses. In the S = 0 channel, the Ω c c c − Ω c c c system exhibits a clear signal of a bound state, while the Ω − Ω system lies very close to the threshold, making it difficult to draw definitive conclusions. For S = 2 , both systems are found to be unbound.
DOI: 10.1103/gnkg-8lyz
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: Arthritis National Research Foundation, Institute of Mathematical Sciences, National Research Foundation, Tata Institute of Fundamental Research, Department of Science and Technology, Ministry of Science and Technology, India, Department of Atomic Energy, Government of India, Science and Engineering Research Board
OpenAlex ID: W4413927704