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Observation of *
Authors :
Ablikim, M. Achasov, M.N. Adlarson, P. Albrecht, M. Aliberti, R. Amoroso, A. An, M.R. An, Q. Bai, X.H. Bai, Y. Bakina, O. Baldini Ferroli, R. Balossino, I. Ban, Y. Batozskaya, V. Becker, D. Begzsuren, K. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Bloms, J. Bortone, A. Boyko, I. Briere, R.A. Brueggemann, A. Cai, H. Cai, X. Calcaterra, A. Cao, G.F. Cao, N. Cetin, S.A. Chang, J.F. Chang, W.L. Chelkov, G. Chen, C. Chen, Chao Chen, G. Chen, H.S. Chen, M.L. Chen, S.J. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Z.J. Cheng, W.S. Chu, X. Cibinetto, G. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, S.X. Egorov, P. Fan, Y.L. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Fischer, K Fritsch, M. Fritzsch, C. Fu, C.D. Gao, H. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, L.M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Han, T.T. Han, W.Y. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Himmelreich, M. Hou, G.Y. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Huang, Z. Hussain, T. Hüsken, N Imoehl, W. Irshad, M. Jackson, J. Jaeger, S. Janchiv, S. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Ji, Y.Y. Jia, Z.K. Jiang, H.B. Jiang, S.S. Jiang, X.S. Jiang, Y. Jiao, J.B. Jiao, Z. Jin, S. Jin, Y. Jing, M.Q. Johansson, T. Kalantar-Nayestanaki, N. Kang, X.S. Kappert, R. Ke, B.C. Keshk, I.K. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kühn, W. Lane, J.J. Lange, J.S. Larin, P. Lavania, A. Lavezzi, L. Lei, Z.H. Leithoff, H. Lellmann, M. Lenz, T. Li, C. Li, C.H. Li, Cheng Li, D.M. Li, F. Li, G. Li, H. Li, H.B. Li, H.J. Li, H.N. Li, J.Q. Li, J.S. Li, J.W. Li, Ke Li, L.J. Li, L.K. Li, Lei Li, M.H. Li, P.R. Li, S.X. Li, S.Y. Li, T. Li, W.D. Li, W.G. Li, X.H. Li, X.L. Li, Xiaoyu Liang, H. Liang, Y.F. Liang, Y.T. Liao, G.R. Liao, L.Z. Libby, J. Limphirat, A. Lin, C.X. Lin, D.X. Lin, T. Liu, B.J. Liu, C.X. Liu, D. Liu, F.H. Liu, Fang Liu, Feng Liu, G.M. Liu, H. Liu, H.B. Liu, H.M. Liu, Huanhuan Liu, Huihui Liu, J.B. Liu, J.L. Liu, J.Y. Liu, K. Liu, K.Y. Liu, Ke Liu, L. Liu, Lu Liu, M.H. Liu, P.L. Liu, Q. Liu, S.B. Liu, T. Liu, W.K. Liu, W.M. Liu, X. Liu, Y. Liu, Y.B. Liu, Z.A. Liu, Z.Q. Lou, X.C. Lu, F.X. Lu, H.J. Lu, J.G. Lu, X.L. Lu, Y. Lu, Y.P. Lu, Z.H. Luo, C.L. Luo, M.X. Luo, T. Luo, X.L. Lyu, X.R. Lyu, Y.F. Ma, F.C. Ma, H.L. Ma, L.L. Ma, M.M. Ma, Q.M. Ma, R.Q. Ma, R.T. Ma, X.Y. Ma, Y. Maas, F.E. Maggiora, M. Maldaner, S. Malde, S. Malik, Q.A. Mangoni, A. Mao, Y.J. Mao, Z.P. Marcello, S. Meng, Z.X. Messchendorp, J.G. Mezzadri, G. Miao, H. Min, T.J. Mitchell, R.E. Mo, X.H. Muchnoi, N. Yu. Nefedov, Y. Nerling, F. Nikolaev, I.B. Ning, Z. Nisar, S. Niu, Y. Olsen, S.L. Ouyang, Q. Pacetti, S. Pan, X. Pan, Y. Pathak, A. Pelizaeus, M. Peng, H.P. Peters, K. Ping, J.L. Ping, R.G. Plura, S. Pogodin, S. Prasad, V. Qi, F.Z. Qi, H. Qi, H.R. Qi, M. Qi, T.Y. Qian, S. Qian, W.B. Qian, Z. Qiao, C.F. Qin, J.J. Qin, L.Q. Qin, X.P. Qin, X.S. Qin, Z.H. Qiu, J.F. Qu, S.Q. Rashid, K.H. Redmer, C.F. Ren, K.J. Rivetti, A. Rodin, V. Rolo, M. Rong, G. Rosner, Ch. Ruan, S.N. Sang, H.S. Sarantsev, A. Schelhaas, Y. Schnier, C. Schoenning, K. Scodeggio, M. Shan, K.Y. Shan, W. Shan, X.Y. Shangguan, J.F. Shao, L.G. Shao, M. Shen, C.P. Shen, H.F. Shen, X.Y. Shi, B.A. Shi, H.C. Shi, J.Y. Shi, Q.Q. Shi, R.S. Shi, X. D Shi, X. Song, J.J. Song, W.M. Song, Y.X. Sosio, S. Spataro, S. Stieler, F. Su, K.X. Su, P.P. Su, Y.J. Sun, G.X. Sun, H. Sun, H.K. Sun, J.F. Sun, L. Sun, S.S. Sun, T. Sun, W.Y. Sun, X Sun, Y.J. Sun, Y.Z. Sun, Z.T. Tan, Y.H. Tan, Y.X. Tang, C.J. Tang, G.Y. Tang, J. Tao, L.Y. Tao, Q.T. Tat, M. Teng, J.X. Thoren, V. Tian, W.H. Tian, Y. Uman, I. Wang, B. Wang, B.L. Wang, C.W. Wang, D.Y. Wang, F. Wang, H.J. Wang, H.P. Wang, K. Wang, L.L. Wang, M. Wang, M.Z. Wang, Meng Wang, S. Wang, T. Wang, T.J. Wang, W. Wang, W.H. Wang, W.P. Wang, X. Wang, X.F. Wang, X.L. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.H. Wang, Y.Q. Wang, Yaqian Wang, Z. Wang, Z.Y. Wang, Ziyi Wei, D.H. Weidner, F. Wen, S.P. White, D.J. Wiedner, U. Wilkinson, G. Wolke, M. Wollenberg, L. Wu, J.F. Wu, L.H. Wu, L.J. Wu, X. Wu, X.H. Wu, Y. Wu, Z. Xia, L. Xiang, T. Xiao, D. Xiao, G.Y. Xiao, H. Xiao, S.Y. Xiao, Y.L. Xiao, Z.J. Xie, C. Xie, X.H. Xie, Y. Xie, Y.G. Xie, Y.H. Xie, Z.P. Xing, T.Y. Xu, C.F. Xu, C.J. Xu, G.F. Xu, H.Y. Xu, Q.J. Xu, X.P. Xu, Y.C. Xu, Z.P. Yan, F. Yan, L. Yan, W.B. Yan, W.C. Yang, H.J. Yang, H.L. Yang, H.X. Yang, L. Yang, S.L. Yang, Tao Yang, Y.F. Yang, Y.X. Yang, Yifan Ye, M. Ye, M.H. Yin, J.H. You, Z.Y. Yu, B.X. Yu, C.X. Yu, G. Yu, T. Yuan, C.Z. Yuan, L. Yuan, S.C. Yuan, X.Q. Yuan, Y. Yuan, Z.Y. Yue, C.X. Zafar, A.A. Zeng, F.R. Zeng, X. Zeng, Y. Zhan, Y.H. Zhang, A.Q. Zhang, B.L. Zhang, B.X. Zhang, D.H. Zhang, G.Y. Zhang, H. Zhang, H.H. Zhang, H.Y. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, J.X. Zhang, J.Y. Zhang, J.Z. Zhang, Jianyu Zhang, Jiawei Zhang, L.M. Zhang, L.Q. Zhang, Lei Zhang, P. Zhang, Q.Y. Zhang, Shuihan Zhang, Shulei Zhang, X.D. Zhang, X.M. Zhang, X.Y. Zhang, Y. Zhang, Y.T. Zhang, Y.H. Zhang, Yan Zhang, Yao Zhang, Z.H. Zhang, Z.Y. Zhao, G. Zhao, J. Zhao, J.Y. Zhao, J.Z. Zhao, Lei Zhao, Ling Zhao, M.G. Zhao, Q. Zhao, S.J. Zhao, Y.B. Zhao, Y.X. Zhao, Z.G. Zhemchugov, A. Zheng, B. Zheng, J.P. Zheng, Y.H. Zhong, B. Zhong, C. Zhong, X. Zhou, H. Zhou, L.P. Zhou, X. Zhou, X.K. Zhou, X.R. Zhou, X.Y. Zhou, Y.Z. Zhu, J. Zhu, K. Zhu, K.J. Zhu, L.X. Zhu, S.H. Zhu, S.Q. Zhu, T.J. Zhu, W.J. Zhu, Y.C. Zhu, Z.A. Zou, B.S. Zou, J.H. (BESIII Collaboration)
Source :
Chinese Physics
Publication Year :
2023
Publisher :
IOP Publishing, 2023.
Abstract
Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESIII detector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8 , the process is observed for the first time with a statistical significance of . The average Born cross sections in the energy ranges of (4.160, 4.380) GeV, (4.400, 4.600) GeV and (4.610, 4.700) GeV are measured to be fb, fb and fb, respectively, where the first uncertainties are statistical and the second are systematic. The line shapes of the and invariant mass spectra are consistent with phase space distributions, indicating that no hexaquark or di-baryon state is observed.
Details
ISSN :
20586132 and 16741137
Volume :
47
Database :
OpenAIRE
Journal :
Chinese Physics C
Accession number :
edsair.doi.dedup.....c8428a778e8a471554abad42246cc6b2