中文

观察$e^+e^-\to\pi^+\pi^- h_c$截面中的三个共振结构

高能物理 - 实验 2025-09-30 v3

摘要

使用BESIII探测器在北京电子正电子子对碰撞器中收集的e+ee^+e^-碰撞数据,以总积分亮度22.2 fb122.2~\mathrm{fb}^{-1},在中心-of-mass能s\sqrt{s}4.0094.0094.950 GeV4.950~\mathrm{GeV}的59个能量点测量了e+eπ+πhce^+e^-\to\pi^+\pi^- h_c的截面。4.34.34.45 GeV4.45~\mathrm{GeV}之间的截面呈台阶状,约在4.5 GeV4.5~\mathrm{GeV}处急剧下降,无法仅用两种共振来描述。我们采用三个相干的Breit-Wigner函数来参数化s\sqrt{s}依赖性截面线状。质量和宽度分别确定为M1=(4223.63.72.9+3.6+2.6) MeV/c2M_1=(4223.6_{-3.7-2.9}^{+3.6+2.6})~\mathrm{MeV}/c^2, Γ1=(58.511.46.5+10.8+6.7) MeV\Gamma_1=(58.5_{-11.4-6.5}^{+10.8+6.7})~\mathrm{MeV}, M2=(4327.418.89.3+20.1+10.7) MeV/c2M_2=(4327.4_{-18.8-9.3}^{+20.1+10.7})~\mathrm{MeV}/c^2, Γ2=(244.127.118.3+34.0+24.2) MeV\Gamma_2=(244.1_{-27.1-18.3}^{+34.0+24.2})~\mathrm{MeV}, 和M3=(4467.45.42.7+7.2+3.2) MeV/c2M_3=(4467.4_{-5.4-2.7}^{+7.2+3.2})~\mathrm{MeV}/c^2, Γ3=(62.814.47.0+19.2+9.9) MeV\Gamma_3=(62.8_{-14.4-7.0}^{+19.2+9.9})~\mathrm{MeV}。第一个不确定性为统计误差,第二个为系统误差。包含相对较窄的第三个分量对于再现约在4.5~GeV处的下降至关重要。三个共振假设与两种共振假设的统计显著性大于5σ5\sigma

关键词

引用

@article{arxiv.2504.04096,
  title  = {Observation of Three Resonant Structures in the Cross Section of $e^+e^-\to\pi^+\pi^- h_c$},
  author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and P. Adlarson and X. C. Ai and R. Aliberti and A. Amoroso and Q. An and Y. Bai and O. Bakina and Y. Ban and H. -R. Bao and V. Batozskaya and K. Begzsuren and N. Berger and M. Berlowski and M. Bertani and D. Bettoni and F. Bianchi and E. Bianco and A. Bortone and I. Boyko and R. A. Briere and A. Brueggemann and H. Cai and M. H. Cai and X. Cai and A. Calcaterra and G. F. Cao and N. Cao and S. A. Cetin and X. Y. Chai and J. F. Chang and G. R. Che and Y. Z. Che and C. H. Chen and Chao Chen and G. Chen and H. S. Chen and H. Y. Chen and M. L. Chen and S. J. Chen and S. L. Chen and S. M. Chen and T. Chen and X. R. Chen and X. T. Chen and X. Y. Chen and Y. B. Chen and Y. Q. Chen and Y. Q. Chen and Z. J. Chen and Z. K. Chen and S. K. Choi and X. Chu and G. Cibinetto and F. Cossio and J. Cottee-Meldrum and J. J. Cui and H. L. Dai and J. P. Dai and A. Dbeyssi and R. E. de Boer and D. Dedovich and C. Q. Deng and Z. Y. Deng and A. Denig and I. Denysenko and M. Destefanis and F. De Mori and B. Ding and X. X. Ding and Y. Ding and Y. Ding and Y. X. Ding and J. Dong and L. Y. Dong and M. Y. Dong and X. Dong and M. C. Du and S. X. Du and S. X. Du and Y. Y. Duan and P. Egorov and G. F. Fan and J. J. Fan and Y. H. Fan and J. Fang and J. Fang and S. S. Fang and W. X. Fang and Y. Q. Fang and R. Farinelli and L. Fava and F. Feldbauer and G. Felici and C. Q. Feng and J. H. Feng and L. Feng and Q. X. Feng and Y. T. Feng and M. Fritsch and C. D. Fu and J. L. Fu and Y. W. Fu and H. Gao and X. B. Gao and Y. Gao and Y. N. Gao and Y. N. Gao and Y. Y. Gao and S. Garbolino and I. Garzia and P. T. Ge and Z. W. Ge and C. Geng and E. M. Gersabeck and A. Gilman and K. Goetzen and J. D. Gong and L. Gong and W. X. Gong and W. Gradl and S. Gramigna and M. Greco and M. H. Gu and Y. T. Gu and C. Y. Guan and A. Q. Guo and L. B. Guo and M. J. Guo and R. P. Guo and Y. P. Guo and A. Guskov and J. Gutierrez and K. L. Han and T. T. Han and F. Hanisch and K. D. Hao and X. Q. Hao and F. A. Harris and K. K. He and K. L. He and F. H. Heinsius and C. H. Heinz and Y. K. Heng and C. Herold and P. C. Hong and G. Y. Hou and X. T. Hou and Y. R. Hou and Z. L. Hou and H. M. Hu and J. F. Hu and Q. P. Hu and S. L. Hu and T. Hu and Y. Hu and Z. M. Hu and G. S. Huang and K. X. Huang and L. Q. Huang and P. Huang and X. T. Huang and Y. P. Huang and Y. S. Huang and T. Hussain and N. Hüsken and N. in der Wiesche and J. Jackson and Q. Ji and Q. P. Ji and W. Ji and X. B. Ji and X. L. Ji and Y. Y. Ji and Z. K. Jia and D. Jiang and H. B. Jiang and P. C. Jiang and S. J. Jiang and T. J. Jiang and X. S. Jiang and Y. Jiang and J. B. Jiao and J. K. Jiao and Z. Jiao and S. Jin and Y. Jin and M. Q. Jing and X. M. Jing and T. Johansson and S. Kabana and N. Kalantar-Nayestanaki and X. L. Kang and X. S. Kang and M. Kavatsyuk and B. C. Ke and V. Khachatryan and A. Khoukaz and R. Kiuchi and O. B. Kolcu and B. Kopf and M. Kuessner and X. Kui and N. Kumar and A. Kupsc and W. Kühn and Q. Lan and W. N. Lan and T. T. Lei and M. Lellmann and T. Lenz and C. Li and C. Li and C. Li and C. H. Li and C. K. Li and D. M. Li and F. Li and G. Li and H. B. Li and H. J. Li and H. N. Li and Hui Li and J. R. Li and J. S. Li and K. Li and K. L. Li and K. L. Li and L. J. Li and Lei Li and M. H. Li and M. R. Li and P. L. Li and P. R. Li and Q. M. Li and Q. X. Li and R. Li and S. X. Li and T. Li and T. Y. Li and W. D. Li and W. G. Li and X. Li and X. H. Li and X. L. Li and X. Y. Li and X. Z. Li and Y. Li and Y. G. Li and Y. P. Li and Z. J. Li and Z. Y. Li and H. Liang and Y. F. Liang and Y. T. Liang and G. R. Liao and L. B. Liao and M. H. Liao and Y. P. Liao and J. Libby and A. Limphirat and C. C. Lin and D. X. Lin and L. Q. Lin and T. Lin and B. J. Liu and B. X. Liu and C. Liu and C. X. Liu and F. Liu and F. H. Liu and Feng Liu and G. M. Liu and H. Liu and H. B. Liu and H. H. Liu and H. M. Liu and Huihui Liu and J. B. Liu and J. J. Liu and K. Liu and K. Liu and K. Y. Liu and Ke Liu and L. C. Liu and Lu Liu and M. H. Liu and P. L. Liu and Q. Liu and S. B. Liu and T. Liu and W. K. Liu and W. M. Liu and W. T. Liu and X. Liu and X. Liu and X. K. Liu and X. Y. Liu and Y. Liu and Y. Liu and Y. Liu and Y. B. Liu and Z. A. Liu and Z. D. Liu and Z. Q. Liu and X. C. Lou and F. X. Lu and H. J. Lu and J. G. Lu and X. L. Lu and Y. Lu and Y. H. Lu and Y. P. Lu and Z. H. Lu and C. L. Luo and J. R. Luo and J. S. Luo and M. X. Luo and T. Luo and X. L. Luo and Z. Y. Lv and X. R. Lyu and Y. F. Lyu and Y. H. Lyu and F. C. Ma and H. L. Ma and J. L. Ma and L. L. Ma and L. R. Ma and Q. M. Ma and R. Q. Ma and R. Y. Ma and T. Ma and X. T. Ma and X. Y. Ma and Y. M. Ma and F. E. Maas and I. MacKay and M. Maggiora and S. Malde and Q. A. Malik and H. X. Mao and Y. J. Mao and Z. P. Mao and S. Marcello and A. Marshall and F. M. Melendi and Y. H. Meng and Z. X. Meng and G. Mezzadri and H. Miao and T. J. Min and R. E. Mitchell and X. H. Mo and B. Moses and N. Yu. Muchnoi and J. Muskalla and Y. Nefedov and F. Nerling and L. S. Nie and I. B. Nikolaev and Z. Ning and S. Nisar and Q. L. Niu and W. D. Niu and C. Normand and S. L. Olsen and Q. Ouyang and S. Pacetti and X. Pan and Y. Pan and A. Pathak and Y. P. Pei and M. Pelizaeus and H. P. Peng and X. J. Peng and Y. Y. Peng and K. Peters and K. Petridis and J. L. Ping and R. G. Ping and S. Plura and V. Prasad and V. Prasad and F. Z. Qi and H. R. Qi and M. Qi and S. Qian and W. B. Qian and C. F. Qiao and J. H. Qiao and J. J. Qin and J. L. Qin and L. Q. Qin and L. Y. Qin and P. B. Qin and X. P. Qin and X. S. Qin and Z. H. Qin and J. F. Qiu and Z. H. Qu and J. Rademacker and C. F. Redmer and A. Rivetti and M. Rolo and G. Rong and S. S. Rong and F. Rosini and Ch. Rosner and M. Q. Ruan and N. Salone and A. Sarantsev and Y. Schelhaas and K. Schoenning and M. Scodeggio and K. Y. Shan and W. Shan and X. Y. Shan and Z. J. Shang and J. F. Shangguan and L. G. Shao and M. Shao and C. P. Shen and H. F. Shen and W. H. Shen and X. Y. Shen and B. A. Shi and H. Shi and J. L. Shi and J. Y. Shi and S. Y. Shi and X. Shi and H. L. Song and J. J. Song and T. Z. Song and W. M. Song and Y. J. Song and Y. X. Song and S. Sosio and S. Spataro and F. Stieler and S. S Su and Y. J. Su and G. B. Sun and G. X. Sun and H. Sun and H. K. Sun and J. F. Sun and K. Sun and L. Sun and S. S. Sun and T. Sun and Y. C. Sun and Y. H. Sun and Y. J. Sun and Y. Z. Sun and Z. Q. Sun and Z. T. Sun and C. J. Tang and G. Y. Tang and J. Tang and J. J. Tang and L. F. Tang and Y. A. Tang and L. Y. Tao and M. Tat and J. X. Teng and J. Y. Tian and W. H. Tian and Y. Tian and Z. F. Tian and I. Uman and B. Wang and B. Wang and Bo Wang and C. Wang and C. Wang and Cong Wang and D. Y. Wang and H. J. Wang and J. J. Wang and K. Wang and L. L. Wang and L. W. Wang and M. Wang and M. Wang and N. Y. Wang and S. Wang and T. Wang and T. J. Wang and W. Wang and W. Wang and W. P. Wang and X. Wang and X. F. Wang and X. J. Wang and X. L. Wang and X. N. Wang and Y. Wang and Y. D. Wang and Y. F. Wang and Y. H. Wang and Y. J. Wang and Y. L. Wang and Y. N. Wang and Y. Q. Wang and Yaqian Wang and Yi Wang and Yuan Wang and Z. Wang and Z. L. Wang and Z. L. Wang and Z. Q. Wang and Z. Y. Wang and D. H. Wei and H. R. Wei and F. Weidner and S. P. Wen and Y. R. Wen and U. Wiedner and G. Wilkinson and M. Wolke and C. Wu and J. F. Wu and L. H. Wu and L. J. Wu and L. J. Wu and Lianjie Wu and S. G. Wu and S. M. Wu and X. Wu and X. H. Wu and Y. J. Wu and Z. Wu and L. Xia and X. M. Xian and B. H. Xiang and D. Xiao and G. Y. Xiao and H. Xiao and Y. L. Xiao and Z. J. Xiao and C. Xie and K. J. Xie and X. H. Xie and Y. Xie and Y. G. Xie and Y. H. Xie and Z. P. Xie and T. Y. Xing and C. F. Xu and C. J. Xu and G. F. Xu and H. Y. Xu and H. Y. Xu and M. Xu and Q. J. Xu and Q. N. Xu and T. D. Xu and W. Xu and W. L. Xu and X. P. Xu and Y. Xu and Y. Xu and Y. C. Xu and Z. S. Xu and F. Yan and H. Y. Yan and L. Yan and W. B. Yan and W. C. Yan and W. H. Yan and W. P. Yan and X. Q. Yan and H. J. Yang and H. L. Yang and H. X. Yang and J. H. Yang and R. J. Yang and T. Yang and Y. Yang and Y. F. Yang and Y. H. Yang and Y. Q. Yang and Y. X. Yang and Y. Z. Yang and M. Ye and M. H. Ye and Z. J. Ye and Junhao Yin and Z. Y. You and B. X. Yu and C. X. Yu and G. Yu and J. S. Yu and L. Q. Yu and M. C. Yu and T. Yu and X. D. Yu and Y. C. Yu and C. Z. Yuan and H. Yuan and J. Yuan and J. Yuan and L. Yuan and S. C. Yuan and X. Q. Yuan and Y. Yuan and Z. Y. Yuan and C. X. Yue and Ying Yue and A. A. Zafar and S. H. Zeng and X. Zeng and Y. Zeng and Y. J. Zeng and Y. J. Zeng and X. Y. Zhai and Y. H. Zhan and A. Q. Zhang and B. L. Zhang and B. X. Zhang and D. H. Zhang and G. Y. Zhang and G. Y. Zhang and H. Zhang and H. Zhang and H. C. Zhang and H. H. Zhang and H. Q. Zhang and H. R. Zhang and H. Y. Zhang and J. Zhang and J. Zhang and J. J. Zhang and J. L. Zhang and J. Q. Zhang and J. S. Zhang and J. W. Zhang and J. X. Zhang and J. Y. Zhang and J. Z. Zhang and Jianyu Zhang and L. M. Zhang and Lei Zhang and N. Zhang and P. Zhang and Q. Zhang and Q. Y. Zhang and R. Y. Zhang and S. H. Zhang and Shulei Zhang and X. M. Zhang and X. Y Zhang and X. Y. Zhang and Y. Zhang and Y. Zhang and Y. T. Zhang and Y. H. Zhang and Y. M. Zhang and Y. P. Zhang and Z. D. Zhang and Z. H. Zhang and Z. L. Zhang and Z. L. Zhang and Z. X. Zhang and Z. Y. Zhang and Z. Y. Zhang and Z. Z. Zhang and Zh. Zh. Zhang and G. Zhao and J. Y. Zhao and J. Z. Zhao and L. Zhao and L. Zhao and M. G. Zhao and N. Zhao and R. P. Zhao and S. J. Zhao and Y. B. Zhao and Y. L. Zhao and Y. X. Zhao and Z. G. Zhao and A. Zhemchugov and B. Zheng and B. M. Zheng and J. P. Zheng and W. J. Zheng and X. R. Zheng and Y. H. Zheng and B. Zhong and C. Zhong and H. Zhou and J. Q. Zhou and J. Y. Zhou and S. Zhou and X. Zhou and X. K. Zhou and X. R. Zhou and X. Y. Zhou and Y. X. Zhou and Y. Z. Zhou and A. N. Zhu and J. Zhu and K. Zhu and K. J. Zhu and K. S. Zhu and L. Zhu and L. X. Zhu and S. H. Zhu and T. J. Zhu and W. D. Zhu and W. D. Zhu and W. J. Zhu and W. Z. Zhu and Y. C. Zhu and Z. A. Zhu and X. Y. Zhuang and J. H. Zou and J. Zu},
  journal= {arXiv preprint arXiv:2504.04096},
  year   = {2025}
}