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PreprintCC BY 4.0arXiv

"Inevitable'' nonstrange tetraquark states and ρρ interaction

  • Yanyue Pan
  • Yuying Hao
  • Shirui Zhao
  • Hongxia Huang
  • Jialun Ping
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Abstract

Investigation of the interaction between two ρ mesons with IJ=00, 02, 11, 20 and $22$ is conducted systematically in the framework of the quark delocalization color screening model. The results show that there is a strong attractive potential between two ρ mesons, which makes it easier for these two mesons to form bound states. The largest binding energies occur for IJ=02 and IJ=00 with values over a hundred MeV, while the IJ=20 state is the least bound and has a binding energy of only a few MeV. Moreover, the results of intercluster distances favor a molecular interpretation of these states. The interaction analysis reveals that the ρρ and ΔΔ interactions share certain similarities. Drawing inspiration from the d* dibaryon prediction and from decay-property analyses, we suggest that the ρρ with IJ=02 may be the most promising candidate of the ``inevitable'' nonstrange tetraquark state, which deserves experimental search.

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Cite

BibTeXRIS
BibTeX
@misc{pan2026inevitable,
  title = {{"Inevitable'' nonstrange tetraquark states and $ρρ$ interaction}},
  author = {Yanyue Pan and Yuying Hao and Shirui Zhao and Hongxia Huang and Jialun Ping},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.34741},
  eprint = {2610.34741},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.34741},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - "Inevitable'' nonstrange tetraquark states and ρρ interaction
AU  - Yanyue Pan
AU  - Yuying Hao
AU  - Shirui Zhao
AU  - Hongxia Huang
AU  - Jialun Ping
PY  - 2026
DA  - 2026/10/26
PB  - arXiv
DO  - 10.48550/arxiv.2610.34741
UR  - https://arxiv.org/abs/2610.34741
AB  - Investigation of the interaction between two ρ mesons with IJ=00, 02, 11, 20 and $22$ is conducted systematically in the framework of the quark delocalization color screening model. The results show that there is a strong attractive potential between two ρ mesons, which makes it easier for these two mesons to form bound states. The largest binding energies occur for IJ=02 and IJ=00 with values over a hundred MeV, while the IJ=20 state is the least bound and has a binding energy of only a few MeV. Moreover, the results of intercluster distances favor a molecular interpretation of these states. The interaction analysis reveals that the ρρ and ΔΔ interactions share certain similarities. Drawing inspiration from the d^* dibaryon prediction and from decay-property analyses, we suggest that the ρρ with IJ=02 may be the most promising candidate of the ``inevitable'' nonstrange tetraquark state, which deserves experimental search.
ER  -