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Spectroscopy of hidden-heavy tetraquark states with JPC=0−− in a color-octet configuration

Bing-Dong Wan*, Jun-Hao Zhang, Yan Zhang, and Ming-Yang Yuan

  • *Contact author: wanbd@lnnu.edu.cn
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Phys. Rev. D 114, 074026 – Published 13 October, 2026

DOI: https://doi.org/10.1103/ypmy-m4lv

Abstract

Within the QCD sum-rule framework, we investigate hidden-heavy tetraquark channels with the exotic quantum number JPC=0−− using four representative local color-octet–octet interpolating currents. The currents include both vector-axialvector and scalar-pseudoscalar Dirac structures. The operator product expansion is carried out up to dimension-eight condensates. The four diagonal sum rules yield mutually consistent mass estimates in the range 10.8–11.1 GeV for the hidden-bottom sector and around 4.3–4.6 GeV for the corresponding hidden-charm sector, with the bottom sector exhibiting the clearest Borel stability. Since local tetraquark currents with the same quantum numbers are related by Fierz rearrangements, the current-dependent results do not by themselves imply four distinct states or uniquely defined internal color structures. We also discuss quantum-number-allowed decay channels and emphasize the absence of the lowest pseudoscalar-pseudoscalar heavy-meson modes for a neutral 0−− state. The results provide theoretical guidance for future experimental searches at Belle II, LHCb, and BESIII.

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Phys. Rev. D 114, 074026– Published 13 October, 2026
  • Received 20 June 2026
  • Accepted 21 August 2026
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