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  • Open Access

Diabatic dynamical diquark model of hidden-strangeness tetraquarks

Shahriyar Jafarzade* and Richard F. Lebed†

  • *Contact author: sjafarz2@asu.edu
  • †Contact author: Richard.Lebed@asu.edu
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Phys. Rev. D 112, 114047 – Published 31 December, 2025

DOI: https://doi.org/10.1103/vspf-jybk

Abstract

We generalize our recent analysis of hidden-strangeness tetraquarks within the dynamical diquark model from its adiabatic form (in which each state is described solely by a diquark-antidiquark potential) to its diabatic form (which incorporates effects of dihadron thresholds upon the states). We tabulate all relevant thresholds and compute the dihadron content of each predicted state. Our results produce no particular hidden-strange tetraquark candidate whose structure is dominated by dihadron structure, in contrast to the charm sector, where many exotic states are strongly associated with such thresholds: The hidden-strange states tend to remain compact and less influenced by dihadron thresholds. Multiple states above 2 GeV with peculiar decay properties, including ϕ(2170), f2(2340), and η(2370), continue to serve as excellent hidden-strange tetraquark candidates.

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Phys. Rev. D 112, 114047– Published 31 December, 2025
  • Received 24 October 2025
  • Accepted 15 December 2025
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