Skip to content
DraconiticResearch
Search Sources API
182,460 studies31 sourcesUpdated 14 min ago
PreprintCC BY 4.0arXiv

Feasibility Study of e+e-→ ηcJ/ψ Production and Fully-Charmed Tetraquark Searches at STCF

  • Zhuojuan Dong
  • Xiaorong Zhou
  • Xiaorui Lv
  • Zhengyun You
  • Jin Zhang
  • Cong Geng
Open at sourcePDFDOICite

Abstract

The proposed high-luminosity Super Tau-Charm Facility (STCF) offers a clean experimental environment for threshold studies of exotic hadrons. In this Letter, we evaluate the expected significance for the fully-charmed vector tetraquark candidate T4c in the e+e- → ηc J/ψ channel at the STCF. Using Monte Carlo simulations of an energy scan from √s=6.71 to 6.79 GeV with 100 fb−1 per point, we adopt a high-efficiency single-tag (ST) reconstruction of J/ψ leptonic decays as the primary strategy, with a double-tag (DT) reconstruction of ηc → K+K-π0 retained as an independent cross-check. Because the signal cross section is governed by the still-uncertain dielectron width Γee, we consider three benchmark hypotheses, Γee=0.25, 0.5, 1 eV. The corresponding expected ST significances are 5.1 σ, 10.6 σ, and 20.5 σ, respectively. These results indicate that the STCF can provide meaningful sensitivity to fully-charmed tetraquark states near threshold.

Related

  1. TQ4Q2.0 Fragmentation Functions for Fully Heavy Tetraquark Production
    Francesco Giovanni Celiberto
    arXivPreprintarXiv licenceFull textHigh-energy & particle physicsNuclear physicsarXiv
  2. The era of charmed resonance searches at the LHC
    Daniel Whiteson
    arXivPreprintarXiv licenceFull textHigh-energy & particle physicsarXiv
  3. Next-to-leading order QCD corrections to fully charm tetraquark hadronic decay
    Yefan Wang, Fengxiang Zhao, Ruilin Zhu
    arXivPreprintCC BY-NC-ND 4.0Full textHigh-energy & particle physicsarXiv
  4. Next-to-leading order QCD corrections to fully charm tetraquark radiative decays
    Xiang Li, Yan-Qing Ma, Bo-Xuan Shi +1
    arXivPreprintCC BY 4.0Full textHigh-energy & particle physicsarXiv
  5. Fully-beauty tensor tetraquark
    S. S. Agaev, K. Azizi, H. Sundu
    arXivPreprintCC BY 4.0Full textHigh-energy & particle physicsarXiv

Cite

BibTeXRIS
BibTeX
@misc{dong2026feasibility,
  title = {{Feasibility Study of $e^+e^-\to η_cJ/ψ$ Production and Fully-Charmed Tetraquark Searches at STCF}},
  author = {Zhuojuan Dong and Xiaorong Zhou and Xiaorui Lv and Zhengyun You and Jin Zhang and Cong Geng},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.25870},
  eprint = {2609.25870},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.25870},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Feasibility Study of e^+e^-→ η_cJ/ψ Production and Fully-Charmed Tetraquark Searches at STCF
AU  - Zhuojuan Dong
AU  - Xiaorong Zhou
AU  - Xiaorui Lv
AU  - Zhengyun You
AU  - Jin Zhang
AU  - Cong Geng
PY  - 2026
DA  - 2026/09/24
PB  - arXiv
DO  - 10.48550/arxiv.2609.25870
UR  - https://arxiv.org/abs/2609.25870
AB  - The proposed high-luminosity Super Tau-Charm Facility (STCF) offers a clean experimental environment for threshold studies of exotic hadrons. In this Letter, we evaluate the expected significance for the fully-charmed vector tetraquark candidate T_4c in the e^+e^- → η_c J/ψ channel at the STCF. Using Monte Carlo simulations of an energy scan from √s=6.71 to 6.79 GeV with 100 fb^−1 per point, we adopt a high-efficiency single-tag (ST) reconstruction of J/ψ leptonic decays as the primary strategy, with a double-tag (DT) reconstruction of η_c → K^+K^-π^0 retained as an independent cross-check. Because the signal cross section is governed by the still-uncertain dielectron width Γ_ee, we consider three benchmark hypotheses, Γ_ee=0.25, 0.5, 1 eV. The corresponding expected ST significances are 5.1 σ, 10.6 σ, and 20.5 σ, respectively. These results indicate that the STCF can provide meaningful sensitivity to fully-charmed tetraquark states near threshold.
ER  -