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Diffusion Monte Carlo study of deuteronlike fully light hexaquarks

M. C. Gordillo1,2,* and J. Segovia1,†

  • *Contact author: cgorbar@upo.es
  • †Contact author: jsegovia@upo.es
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Phys. Rev. D 114, 074046 – Published 21 October, 2026

DOI: https://doi.org/10.1103/624f-mztg

Abstract

We perform a diffusion Monte Carlo study of fully light hexaquarks containing three u quarks and three d quarks within a constituent-quark model. Both compact and baryon-baryon-like arrangements were considered separately. All compact hexaquark configurations are found well above their corresponding baryon-baryon thresholds, suggesting that deeply bound compact six-quark states are not favored in the light-quark sector within this model. By contrast, several dibaryonlike configurations lie close to, but above, the NN, NΔ, and ΔΔ thresholds and show spatial structures compatible with molecular states. One configuration exhibits two well-defined nucleonlike subclusters separated by several femtometers, characteristic of deuteronlike spatial clustering, although its calculated energy remains slightly above the corresponding threshold.

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Phys. Rev. D 114, 074046– Published 21 October, 2026
  • Received 13 July 2026
  • Accepted 5 October 2026
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