Lattice QCD Study of Positive Parity Dibaryons with Maximal Charm and Strangeness

Abstract

We present the ground-state energy spectra of dibaryons composed of single-flavor quarks, specifically systems with strangeness $\mathcal{S}=-6$ and charm $\mathcal{C}=6$. Our lattice QCD study is based on $N_f=2+1+1$ MILC ensembles with highly improved staggered quark (HISQ) 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 ${\Omega }_{ccc}$-${\Omega }_{ccc}$ system exhibits a clear signal of a bound state, while the $\Omega$-$\Omega$ system lies very close to the threshold, making it difficult to draw definitive conclusions. For $S=2$, both systems are found to be unbound.

arXiv commentv2: 15 pages, 8 tables, 10 main text figures, and 2 appendices figures. No change in results and version consistent with Published PRD version

References in corpus (45)

• Exactly massless quarks on the lattice
• More about exactly massless quarks on the lattice
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Few-Nucleon Forces and Systems in Chiral Effective Field Theory
• Massive Fermions in Lattice Gauge Theory
• Lattice QCD ensembles with four flavors of highly improved staggered quarks
• $B$- and $D$-meson leptonic decay constants from four-flavor lattice QCD
• Do hyperons exist in the interior of neutron stars ?
• Two-particle multichannel systems in a finite volume with arbitrary spin
• Strangeness in Nuclei and Neutron Stars
• Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freeze-out in Heavy Ion Collisions
• Study of doubly heavy tetraquarks in Lattice QCD
• Evidence for a New Resonance from Polarized Neutron-Proton Scattering
• High-precision quark masses and QCD coupling from $n_f=4$ lattice QCD
• Most Strange Dibaryon from Lattice QCD
• Precise predictions of charmed-bottom hadrons from lattice QCD
• On the History of Dibaryons and their Final Observation
• Novel Six-Quark Hidden-Color Dibaryon States in QCD
• Quark Delocalization, Color Screening and Dibaryons
• Baryon-Baryon Interactions and Spin-Flavor Symmetry from Lattice Quantum Chromodynamics
• Clebsch-Gordan Construction of Lattice Interpolating Fields for Excited Baryons
• Lattice QCD study of the $H$ dibaryon using hexaquark and two-baryon interpolators
• Dynamical calculation of the $\Delta \Delta$ dibaryon candidates
• A lattice investigation of exotic tetraquark channels
• Estimating the two-particle $K$-matrix for multiple partial waves and decay channels from finite-volume energies
• Dibaryon with highest charm number near unitarity from lattice QCD
• Weakly bound $H$ dibaryon from SU(3)-flavor-symmetric QCD
• Dibaryon Systems In SU(3) Chira Quark Model
• Probing $\Omega \Omega$ and $p\Omega$ dibaryons with femtoscopic correlations in relativistic heavy-ion collisions
• Deuteron-like heavy dibaryons from Lattice QCD
• Lattice QCD study of doubly-charmed strange baryons
• A variational study of two-nucleon systems with lattice QCD
• Hyperons in Two Flavor Chiral Perturbation Theory
• S-wave scattering of strangeness -3 baryons
• Consistency between Lüscher's finite volume method and HAL QCD method for two-baryon systems in lattice QCD
• The $d^{\ast }(2380)$ in neutron stars - a new degree of freedom?
• Strongly Bound Dibaryon with Maximal Beauty Flavor from Lattice QCD
• Bound isoscalar axial-vector $bc\bar{u}\bar{d}$ tetraquark $T_{bc}$ from lattice QCD using two-meson and diquark-antidiquark variational basis
• $\Omega \Omega$ interaction from 2+1 flavor lattice QCD
• Study of isoscalar scalar $bc\bar{u}\bar{d}$ tetraquark $T_{bc}$ from lattice QCD
• Search for an Isospin I =3 Dibaryon
• On the equivalence of Prony and Lanczos methods for Euclidean correlation functions
• Reanalysis of the most strange dibaryon within constituent quark models
• Spectrum of two-flavored spin-zero heavy dibaryons in lattice QCD
• $bb\bar{u}\bar{d}$ and $bs\bar{u}\bar{d}$ tetraquarks from lattice QCD using two-meson and diquark-antidiquark variational basis

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