Export citation

Export citation

Choose format for download:

Download Citation

    Highly correlated exponential variational method applied to the d−Ωccc system

    Yushu Wang*,†

    • Wuhan, Hubei 430050, China

    • *Independent researcher.
    • †Contact author: yushu0824@gmail.com

    Phys. Rev. C 114, 034009 – Published 21 September, 2026

    DOI: https://doi.org/10.1103/hlmx-6x21

    Abstract

    Recent calculations based on the same HAL QCD Collaboration NΩccc lattice-QCD potential have reached conflicting conclusions on whether the NNΩccc system supports a bound state. The problem is reexamined here with a highly correlated exponential variational method. The near-threshold state is directly evaluated without coupling-constant extrapolation, and the Coulomb interaction is treated through analytically exact matrix elements. Without Coulomb, the variational energy lies below the d+Ωccc threshold, indicating a shallow (0)1/2+ d–Ωccc bound state with a binding energy of about 0.025 MeV. The resulting bound state is spatially extended, with 〈rNΩ2〉≈17.5 fm, consistent with the near-threshold scale κ−1≈24 fm (rms ≈17 fm). When Coulomb repulsion is included, the variational energy approaches the threshold from above while the rms separation grows strongly and remains unconverged; no binding signal is found within the explored basis sizes. Complex-scaling calculations likewise yield no θ-stable resonance pole. In the Coulomb-free model, a survey of the nine spin-channel/time-slice combinations finds only the S13, t/a=16 case below threshold.

    Physics Subject Headings (PhySH)

    Authorization Required

    We need you to provide your credentials before accessing this content.

    References (Subscription Required)

    Outline

    Information

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation