Current-dependent SU(3)-flavor breaking in hidden-heavy 0−− tetraquark spectroscopy
Abstract
We investigate SU(3)-flavor-breaking effects in hidden-heavy tetraquark channels with the exotic quantum number JPC=0−−, focusing on the dependence of the extracted mass shifts on the interpolating-current structure. Using four local color-octet--octet currents within QCD sum rules, we retain the explicit strange-quark mass and strange condensate contributions in the operator product expansion through dimension eight. By comparing the strange and nonstrange sectors within the same current basis, we obtain hidden-charm-strange mass estimates between 4.37 and 4.79 GeV and hidden-bottom-strange masses between 10.85 and 11.19 GeV. The central charm-sector mass shifts are approximately 40 and 70 MeV for the hidden-flavor-like currents, compared with 190 and 220 MeV for the open-flavor-like currents. The bottom sector exhibits a smaller spread in the corresponding shifts. These results suggest a current-dependent SU(3)-breaking response within the adopted sum-rule framework. The predicted mass associated with one open-flavor-like current also overlaps the Ds*D̅s1(2536) threshold region within uncertainties. Our analysis provides complementary strange-sector spectral information while leaving the physical-state composition unresolved.
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BibTeX
@misc{wan2026currentdependent,
title = {{Current-dependent SU(3)-flavor breaking in hidden-heavy $0^--$ tetraquark spectroscopy}},
author = {Bing-Dong Wan and Ming-Yang Yuan and Si-Yu Liu and Jun-Hao Zhang and Yan Zhang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.25551},
eprint = {2606.25551},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.25551},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Current-dependent SU(3)-flavor breaking in hidden-heavy 0^−− tetraquark spectroscopy
AU - Bing-Dong Wan
AU - Ming-Yang Yuan
AU - Si-Yu Liu
AU - Jun-Hao Zhang
AU - Yan Zhang
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2606.25551
UR - https://arxiv.org/abs/2606.25551
AB - We investigate SU(3)-flavor-breaking effects in hidden-heavy tetraquark channels with the exotic quantum number J^PC=0^−−, focusing on the dependence of the extracted mass shifts on the interpolating-current structure. Using four local color-octet--octet currents within QCD sum rules, we retain the explicit strange-quark mass and strange condensate contributions in the operator product expansion through dimension eight. By comparing the strange and nonstrange sectors within the same current basis, we obtain hidden-charm-strange mass estimates between 4.37 and 4.79 GeV and hidden-bottom-strange masses between 10.85 and 11.19 GeV. The central charm-sector mass shifts are approximately 40 and 70 MeV for the hidden-flavor-like currents, compared with 190 and 220 MeV for the open-flavor-like currents. The bottom sector exhibits a smaller spread in the corresponding shifts. These results suggest a current-dependent SU(3)-breaking response within the adopted sum-rule framework. The predicted mass associated with one open-flavor-like current also overlaps the D_s^*D̅_s1(2536) threshold region within uncertainties. Our analysis provides complementary strange-sector spectral information while leaving the physical-state composition unresolved.
ER -