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1. Characterizations and growth kinetics of the borided layer formed on pure nickel by molten salt electrolysis

Author

B.-X. Wang, W.-L. Yuan, Z.-Y. Wang, J.-X. Li, H.-Z. Ma, and Y.-H. Song

Subjects
Mechanics of Materials, Materials Chemistry, Metals and Alloys, Geotechnical Engineering and Engineering Geology
Abstract

Molten salt electrolysis was applied for the boronizing of nickel with Na2B4O7?10H2O-Na2CO3 as the electrolyte and characterizations and the growth kinetics of borided layer is reported. The experiment was carried out in silicon carbide crucible at 1193 K, 1223 K, and 1243 K for 1 h, 2 h, 3 h, and 4 h. The morphology and phases formed on the surface of pure nickel were analyzed by means of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction analysis (XRD). The surface hardness and corrosion resistance of the boronized sample were tested by micro hardness tester and electrochemical workstation, respectively. The borided layer was composed of nickel borides and its thickness ranged from 71 to 184 ?m. After 1 h of boronizing, the hardness of the silicon rich borides is 966 HK, which is a little lower than that of the nickel borides (992-1008 HK); the surface hardness reached 1755 HK after 4 h electrolysis. Electrochemical impedance spectroscopy analysis showed that the corrosion resistance of boronized sample is better than that of pure nickel. Borided layer growth kinetics was studied by analyzing the relationship between thickness of the borided layer and time by mathematical method. Then the diffusion coefficient constant of boron atom in nickel at 1193 K, 1223 K and 1243 K was calculated accordingly and an equation was obtained to estimate the thickness of the borided layer.

Published
2022

2. [Multidisciplinary fusion in the treatment of generalized severe periodontitis: a case report]

Author

M Y, Bian, W L, Yuan, Y M, Feng, and L L, Chen

Subjects
Aggressive Periodontitis, Humans
Abstract

伴有错（牙合）畸形及牙列缺损的重度牙周炎病情较复杂，其治疗应在完善牙周基础治疗的前提下进行多学科联合诊治，以达到恢复牙周组织健康、重建咬合功能及改善前牙美观的目标。在牙周再生性手术修复牙槽骨缺损过程中，可通过正畸整体移动、伸长、压低以及直立患牙等进行辅助治疗。本文报道1例多学科联合诊治广泛型重度慢性牙周炎病例的全过程，纵向观察4年，分析正畸压低在改善前牙区美学缺陷中的作用，并探讨牙周再生性手术与正畸治疗时机的个性化选择，以期为重度牙周炎的多学科治疗提供参考。.

Published
2021

3. Observation of η′→π+π−μ+μ−

Author

H. B. Li, X. Q. Hao, C. L. Luo, Y. H. Zheng, Cong-Feng Qiao, S. Nakhoul, Q. Zhou, S. Jaeger, P. Larin, S. Ahmed, N. Yu. Muchnoi, Y. X. Yang, B. Zhong, L. B. Guo, X. S. Kang, Lei Li, Xiangcheng Pan, Y. H. Zhang, Zhenxiong Yuan, T. Y. Qi, S. L. Olsen, M. Himmelreich, A. N. Zhu, Tao Zhang, W. H. Wang, G. Y. Tang, X. H. Xie, Jie Zhao, Xu Yan, Alexey Zhemchugov, H. M. Hu, T. Yu, F. H. Liu, Nicolas Berger, J. W. Zhang, X. K. Zhou, R. T. Ma, Tao Luo, Wenbin Qian, X D Shi, Q. Liu, Y. G. Gao, H. J. Lu, J. G. Lu, F. Li, Z. Y. Wang, Teresa Lenz, Q. Zhao, Huanhuan Liu, Y. Schelhaas, T. Z. Han, Yanping Huang, Y. Z. Sun, Y. Ding, L. L. Ma, L. Gong, Xu Shan, B. J. Liu, Y. X. Tan, F. C. Ma, G. Felici, L. G. Xia, Y. J. Mao, H. X. Yang, I. Garzia, H. R. Qi, Q. Q. Song, Xujin Yuan, A. Amoroso, S. B. Liu, H. Liang, Q. P. Ji, I. K. Keshk, J. L. Li, T. Y. Xing, D. Y. Chen, C. X. Lin, F. E. Maas, T. Hu, H. Y. Zhang, B. X. Yu, R. Kliemt, Fang Liu, Y. Nefedov, Alexander Leon Gilman, F. F. Sui, M. Rump, Gang Zhao, W. Kühn, M. H. Gu, U. Wiedner, A. Mangoni, A. Guskov, Jie Yu, Y. P. Guo, X. L. Li, Huihui Liu, Z. Y. You, M. Qi, I. Denysenko, C. Zhong, Z. A. Zhu, R. Kiuchi, T. Holtmann, Magnus Wolke, M. Rolo, O. Bakina, T. J. Min, K. J. Zhu, J. G. Messchendorp, Z. Ning, S. Y. Xiao, Serkant Ali Cetin, A. Dbeyssi, Y. F. Liang, H. J. Yang, Shulei Zhang, Y. F. Long, K. Ravindran, T. Liu, J. F. Qiu, G. Cibinetto, P. W. Luo, G. F. Chen, P. X. Shen, K. Goetzen, H. J. Li, Shuai Liu, Z. Wu, A. Calcaterra, Z. G. Zhao, L. Z. Liao, M. Kuessner, J. Y. Liu, C. X. Yu, L. Fava, Zhi Yang, Cheng Li, Zhang Li, J. Y. Zhang, D. Y. Liu, J. B. Jiao, H. S. Chen, Alperen Yuncu, V. Rodin, X. H. Li, Guangyi Zhang, Zhiqing Zhang, C. P. Shen, W. G. Li, A. G. Denig, Yu Bai, Y. K. Sun, F. Nerling, L. Wollenberg, X. H. Mo, L. J. Wu, X. Wu, X. P. Xu, X. B. Ji, Angelo Rivetti, F. Cossio, Ruiting Ma, B. Zheng, R. G. Ping, H. H. Zhang, M. H. Ye, S. Spataro, Tao Sun, Z. Qian, P. Patteri, Jianyu Zhang, H. L. Dai, Y. J. Mo, G. A. Chelkov, Xingchao Dai, E. M. Gersabeck, Jinfei Wu, G. Wilkinson, H. M. Liu, Y. N. Gao, Y. K. Heng, Bibo Ke, W. B. Yan, W. S. Cheng, Yi Zhang, Yao Zhang, G. Li, J. F. Hu, Y. X. Zhao, Y. H. Xie, T. T. Han, Z. A. Liu, Y. Zhang, Ke Liu, X. L. Gao, G. F. Cao, X. L. Wang, S. J. Zhao, F. De Mori, J. B. Zhao, Feng Yan, M. Lellmann, C. D. Fu, M. Maggiora, Ling Zhao, X. L. Luo, V. Prasad, A. Q. Guo, C. W. Wang, R. Kappert, S. Pacetti, S. Maldaner, J. Q. Zhang, J. Libby, Ke Wang, I. R. Boyko, W. Y. Sun, C. Q. Feng, W. M. Song, Lei Zhao, X. R. Chen, Y. Ban, S. H. Zhang, X. Y. Shen, X. Sun, Z. Y. Deng, Z. L. Hou, Hai-Tian Wang, S. Qian, Q. An, Jialun Ping, T. Johansson, J. F. Chang, C. Dong, Andrzej Kupsc, Yaquan Fang, M. Greco, Shou-hua Zhu, P. Weidenkaff, S. Sosio, Y. H. Tan, Ke Li, K. Y. Liu, X. Y. Zhang, Y. F. Wang, J. D. Lu, Q. J. Xu, M. Y. Dong, S. P. Wen, O. B. Kolcu, A. Bortone, Z. H. Qin, Xuanhong Lou, Viktor Thorén, M. L. Chen, L. L. Wang, H. Cai, A. Lavania, R. E. de Boer, R. Poling, X. S. Qin, X. R. Zhou, X. L. Lu, F. H. Heinsius, John Jake Lane, X. Cai, L. Lavezzi, J. B. Liu, Nasser Kalantar-Nayestanaki, K. Begzsuren, G. F. Xu, Y. J. Sun, Yifan Yang, Joachim Pettersson, C. Schnier, Y. Q. Wang, J. H. Zou, Meng Wang, Muhammad Irshad, S. Q. Qu, W. Ikegami Andersson, Guoqiang Yu, Yue Pan, I. Balossino, C. Z. Yuan, N. Cao, J. Tang, F. X. Lu, W. P. Wang, S. S. Sun, Y. P. Lu, B. L. Wang, Yan Zhang, K. Schoenning, B. S. Zou, S. Jin, Lei Zhang, D. C. Shan, F. Bianchi, M. X. Luo, Dylan Jaide White, Yunlong Zhang, X. T. Huang, R. E. Mitchell, F. A. Harris, L. Q. Huang, D. Bettoni, R. Farinelli, J. L. Zhang, W. L. Chang, G. Mezzadri, W. C. Yan, G. Rong, D. V. Dedovich, H. B. Liu, H. Leithoff, Zhiqiang Liu, R. S. Shi, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, P. Kiese, Yuan Hou, L. Koch, A. Khoukaz, Jianping Zheng, B. Kopf, Jacek Biernat, L. M. Gu, R. A. Briere, K. L. He, S. X. Du, X. F. Wang, Ziyi Wang, S. W. Han, M. N. Achasov, L. P. Zhou, Z. X. Meng, X. A. Xiong, M. Z. Wang, Jimin Zhao, R. Baldini Ferroli, H. L. Ma, Y. M. Ma, D. M. Li, X. S. Jiang, P. L. Li, M. Destefanis, Z. P. Mao, Y. C. Xu, A. A. Zafar, Q. M. Ma, C. F. Redmer, Krisztian Peters, S. Malde, L. D. Liu, J. Fang, M. Bertani, Zongyuan Wang, H. Muramatsu, R. X. Yang, Wei Xu, J. X. Teng, Ch. Rosner, L. Yang, A. Pitka, P. Adlarson, J. J. Xu, F. Weidner, Haiping Peng, W. L. Yuan, Q. Ouyang, X. H. Bai, S. S. Fang, C. Y. Guan, H. B. Jiang, Jiawei Zhang, C. X. Liu, Y. B. Liu, Y. Yuan, M. Pelizaeus, W. Gradl, Zujian Wang, Y. X. Song, Y. T. Liang, S. J. Chen, L. Y. Dong, X. L. Ji, S. Y. Li, Y. B. Zhao, Z. Y. Zhang, W. Shan, L. H. Wu, J. Dong, Yi Jin, Y. G. Xie, W. Imoehl, X. H. Liu, L. Q. Qin, J. P. Dai, Y. J. Xiao, S. Nisar, C. J. Tang, Y. Y. Ji, S. Janchiv, Y. Hu, I. B. Nikolaev, J. H. Yin, Xiao-Rui Lyu, M. Shao, Y. T. Gu, C. X. Yue, X. N. Ma, B. Wang, M. Fritsch, J. Q. Li, Wen-Zhao Liu, M. Kavatsyuk, H. C. Shi, J. F. Sun, S. Marcello, Y. Zeng, B. X. Zhang, Zhe Sun, M. M. Ma, S. Lusso, J. Bloms, N. Hüsken, Y. B. Chen, J. Z. Zhang, J. J. Song, L. Sun, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, M. Kuemmel, Matthew Glenn Kurth, F. Feldbauer, G. X. Sun, J. V. Bennett, Li Yan, X. F. Cui, Z. L. Huang, Feng Liu, Z. Jiao, M. Ablikim, G. S. Huang, W. J. Zhu, X. D. Shi, Dan Wang, S. Gu, S. L. Yang, G. R. Liao, Y. Fu, Yao Wang, Y. C. Zhu, H. Xiao, T. Held, M. Albrecht, W. D. Li, I. Uman, Z. J. Xiao, T. Hussain, X. Y. Ma, W. X. Gong, A. Pathak, and C. H. Li

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 01 natural sciences, Measure (mathematics), Prime (order theory)
Abstract

Using $(1310.6 \pm 7.0) \times 10^{6}~J/\psi$ events acquired with the BESIII detector at the BEPCII storage rings, the decay $\eta^\prime\rightarrow\pi^+\pi^-\mu^+\mu^-$ is observed for the first time with a significance of 8$\sigma$ via the process $J/\psi\rightarrow\gamma\eta'$. We measure the branching fraction of $\eta^\prime\rightarrow\pi^+\pi^-\mu^+\mu^-$ to be $\mathcal{B}(\eta^\prime\rightarrow\pi^+\pi^-\mu^+\mu^-)$=(1.97$\pm$0.33(stat.)$\pm$0.18(syst.))$\times10^{-5}$, where the first and second uncertainties are statistical and systematic, respectively.

Published
2021

4. Search for the reaction e+e−→χcJπ+π− and a charmoniumlike structure decaying to χcJπ± between 4.18 and 4.60 GeV

Author

J. H. Zou, Xiangcheng Pan, H. Liang, W. G. Li, A. G. Denig, S. S. Sun, Zhenxiong Yuan, G. Wilkinson, Y. K. Sun, W. S. Cheng, Yao Zhang, G. Li, X. L. Ji, Q. P. Ji, X. H. Mo, Tao Luo, S. Spataro, M. H. Ye, C. Zhong, T. Holtmann, Huanhuan Liu, J. Y. Liu, Z. Y. Zhang, Y. H. Xie, K. Goetzen, T. Johansson, M. Kuemmel, Matthew Glenn Kurth, J. F. Chang, L. L. Wang, Ke Liu, H. Cai, Lei Li, G. Felici, Q. Liu, Meng Wang, Muhammad Irshad, Y. F. Wang, Xu Yan, Jianyu Zhang, R. T. Ma, Lingxuan Zhang, O. B. Kolcu, H. R. Qi, C. D. Fu, C. Q. Feng, X. R. Chen, Y. X. Tan, B. X. Yu, X. Cai, L. Lavezzi, L. Q. Huang, Jacek Biernat, M. Maggiora, L. L. Ma, L. Gong, R. E. Mitchell, H. M. Liu, Yan Zhang, Y. N. Gao, Z. Y. Deng, Q. A. Malik, G. Mezzadri, Hai-Tian Wang, W. C. Yan, Zhiqiang Liu, X. F. Cui, Z. Ning, S. Y. Xiao, M. Qi, H. J. Yang, X. P. Qin, H. B. Li, Ling Zhao, Lei Zhao, Z. L. Hou, Shulei Zhang, Y. G. Xie, Y. Hu, I. B. Nikolaev, X. K. Zhou, Jinfei Wu, L. G. Xia, A. Amoroso, Y. Ding, Y. Zhang, C. L. Luo, Q. Zhou, L. M. Gu, M. N. Achasov, J. H. Yin, L. P. Zhou, Y. M. Ma, Z. P. Mao, H. J. Li, J. D. Lu, F. Feldbauer, C. Schnier, Y. Q. Wang, F. F. Sui, M. H. Gu, H. S. Chen, Alperen Yuncu, H. J. Lu, Xujin Yuan, Z. L. Huang, F. A. Harris, W. L. Chang, X. H. Li, L. Wollenberg, X. Q. Hao, M. Shao, Y. T. Gu, R. Kiuchi, Bibo Ke, Y. Fu, J. G. Lu, H. L. Dai, A. Dbeyssi, C. X. Yue, S. Nakhoul, R. S. Shi, Y. X. Zhao Zhao, B. Zhong, L. B. Guo, Feng Liu, W. B. Yan, J. Fang, B. J. Liu, Xingchao Dai, Lei Zhang, G. S. Huang, X. T. Huang, P. W. Luo, S. B. Liu, X. Y. Jiang, H. Leithoff, F. Li, E. M. Gersabeck, Y. H. Zheng, S. Jaeger, Cong-Feng Qiao, T. Y. Xing, D. Y. Chen, S. Qian, Q. An, Jialun Ping, C. Z. Yuan, N. Cao, S. Ahmed, Y. X. Yang, Ch. Rosner, X. Y. Zhang, J. Libby, X. L. Luo, G. Rong, X. L. Lu, F. E. Maas, T. Hu, W. J. Zhu, C. X. Yu, X. D. Shi, Dan Wang, Yaquan Fang, M. Greco, Angelo Rivetti, Shou-hua Zhu, F. C. Ma, Y. Nefedov, P. Larin, Zujian Wang, L. D. Liu, Zhang Li, S. Pacetti, S. Gu, A. N. Zhu, Tao Zhang, W. Kühn, X. L. Wang, L. Koch, A. Khoukaz, J. B. Liu, John Jake Lane, Guoqiang Yu, K. Begzsuren, Z. Y. You, Y. C. Zhu, X. L. Li, J. F. Sun, B. Zheng, R. G. Ping, Z. A. Liu, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, N. Yu. Muchnoi, N. Huesken, X. N. Ma, W. P. Wang, J. J. Xu, F. Bianchi, A. Sarantsev, D. H. Wei, P. R. Li, X. S. Kang, Y. H. Zhang, O. Bakina, J. S. Lange, Z. A. Zhu, Y. J. Sun, Yifan Yang, T. Z. Han, R. Baldini Ferroli, T. Hussain, Y. H. Tan, K. Schoenning, X. Y. Ma, W. X. Gong, Y. P. Lu, B. S. Zou, Andrzej Kupsc, D. C. Shan, S. Marcello, Ke Li, L. H. Wu, V. Prasad, F. De Mori, V. Rodin, Xiao-Rui Lyu, Y. Ban, P. Weidenkaff, Y. Zeng, Zhe Sun, S. Lusso, Xu Shan, H. Xiao, S. L. Olsen, Q. Zhao, Krisztian Peters, S. Malde, Y. Z. Sun, M. Bertani, M. L. Chen, M. Z. Wang, T. Y. Qi, L. Yang, D. Y. Liu, T. Held, B. Wang, P. X. Shen, Yi Jin, Fang Liu, S. P. Wen, M. Kuessner, M. Fritsch, H. Y. Zhang, T. Liu, J. F. Qiu, Y. B. Zhao, R. B. de Boer, L. Fava, Zhi Yang, X. P. Xu, X. B. Ji, C. X. Liu, X. S. Qin, X. R. Zhou, M. Ablikim, A. Pathak, W. Shan, F. X. Lu, Z. Y. Wang, J. Dong, Z. Wu, A. Calcaterra, Z. G. Zhao, I. K. Keshk, M. Himmelreich, Teresa Lenz, P. Patteri, Y. Schelhaas, U. Wiedner, I. Denysenko, H. B. Jiang, C. P. Shen, Jiawei Zhang, M. Kavatsyuk, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Cheng Li, Y. J. Xiao, Tao Sun, H. C. Shi, G. A. Chelkov, G. F. Chen, F. Nerling, J. Q. Li, W. H. Wang, J. J. Song, J. Y. Zhang, L. Sun, I. Uman, C. X. Lin, Yu Bai, Alexander Leon Gilman, Haiping Peng, M. Rump, Gang Zhao, W. Imoehl, H. H. Zhang, T. Yu, Q. Q. Song, C. H. Li, Xin Wu, L. Y. Dong, S. Janchiv, L. J. Wu, W. Gradl, X. F. Wang, Zhiqing Zhang, Shuai Liu, Ke Wang, S. Nisar, R. Kappert, C. J. Tang, B. X. Zhang, Q. M. Ma, X. H. Liu, L. Q. Qin, J. Bloms, Zongyuan Wang, W. Y. Sun, Z. J. Xiao, R. Kliemt, M. Lellmann, A. Mangoni, A. Guskov, Y. J. Mo, Y. P. Guo, S. Maldaner, Guangyi Zhang, P. Kiese, Yuan Hou, R. A. Briere, Y. X. Song, Z. X. Meng, X. A. Xiong, Jie Yu, F. Weidner, M. Albrecht, R. Poling, Serkant Ali Cetin, F. H. Heinsius, Wenbin Qian, X. S. Jiang, A. A. Zafar, Y. Yuan, Y. K. Heng, T. T. Han, L. Z. Liao, G. F. Xu, S. J. Zhao, S. Jin, Anita, Y. G. Gao, J. P. Dai, W. D. Li, B. L. Wang, W. L. Yuan, Q. Ouyang, S. S. Fang, C. Y. Guan, G. Y. Tang, J. B. Jiao, X. H. Xie, R. X. Yang, Wei Xu, A. Pitka, P. Adlarson, R. Farinelli, M. X. Luo, Dylan Jaide White, Y. B. Liu, S. L. Yang, K. H. Rashid, Yao Wang, M. M. Ma, B. T. Tsednee, D. V. Dedovich, H. B. Liu, J. B. Zhao, Jie Zhao, Magnus Wolke, T. J. Min, K. J. Zhu, Y. F. Liang, I. R. Boyko, J. Q. Zhang, B. Kopf, Q. J. Xu, Alexey Zhemchugov, H. M. Hu, A. Bortone, Xuanhong Lou, Y. T. Liang, H. L. Ma, D. M. Li, F. H. Liu, Nicolas Berger, Y. F. Long, K. Ravindran, G. Cibinetto, S. H. Zhang, X. Y. Shen, Viktor Thorén, Nasser Kalantar-Nayestanaki, H. Muramatsu, J. W. Zhang, Yi Zhang, S. J. Chen, Yue Pan, I. Balossino, G. X. Sun, J. V. Bennett, Li Yan, S. Y. Li, K. L. He, Ziyi Wang, M. Pelizaeus, K. Y. Liu, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, S. W. Han, Z. Jiao, Jimin Zhao, P. L. Li, C. F. Redmer, J. Tang, Yunlong Zhang, D. Bettoni, J. L. Zhang, Jianping Zheng, S. X. Du, M. Destefanis, J. L. Li, M. Rolo, F. Cossio, Ruiting Ma, Z. Qian, X. L. Gao, C. Dong, S. Sosio, Joachim Pettersson, J. F. Hu, G. F. Cao, A. Q. Guo, C. W. Wang, W. M. Song, Z. H. Qin, X D Shi, Y. J. Mao, H. X. Yang, I. Garzia, Huihui Liu, J. G. Messchendorp, and M. Y. Dong

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Structure (category theory), State (functional analysis), 010306 general physics, 01 natural sciences, Energy (signal processing)
Abstract

We search for the process $e^{+}e^{-}\rightarrow \pi ^{+}\pi ^{-} \chi_{cJ}$ ($J=0,1,2$) and for a charged charmonium-like state in the $\pi ^{\pm} \chi_{cJ}$ subsystem. The search uses data sets collected with the BESIII detector at the BEPCII storage ring at center-of-mass energies between 4.18 GeV and 4.60 GeV. No significant $\pi ^{+}\pi ^{-} \chi_{cJ}$ signals are observed at any center-of-mass energy, and thus upper limits are provided which also serve as limits for a possible charmonium-like structure in the invariant $\pi ^{\pm} \chi_{cJ}$ mass.

Published
2021

5. Model-Independent Determination of the Spin of the Ω− and Its Polarization Alignment in ψ(3686)→Ω−Ω¯+

Author

K. Goetzen, R. Kappert, G. F. Xu, S. Jin, Anita, S. Gu, S. Lusso, L. D. Liu, J. J. Xu, K. Zhu, H. J. Lu, M. M. Ma, Q. A. Malik, Y. Fu, G. Mezzadri, M. X. Luo, Dylan Jaide White, B. Kopf, R. Farinelli, Qi Liu, D. V. Dedovich, Tao Luo, G. Felici, F. Li, J. Fang, F. E. Maas, T. Hu, Xujin Yuan, F. De Mori, Si Li, L. H. Wu, B. X. Yu, M. Kuessner, P. L. Li, W. B. Yan, M. N. Achasov, Y. C. Zhu, Z. L. Huang, A. Pitka, M. H. Ye, K. L. He, F. C. Ma, A. G. Denig, G. X. Sun, J. V. Bennett, Li Yan, H. L. Ma, J. B. Zhao, Q. P. Ji, M. Ablikim, K. Wang, S. Pacetti, L. M. Gu, L. P. Zhou, Y. F. Long, K. Ravindran, X. N. Ma, I. R. Boyko, J. L. Li, S. L. Yang, Xu Yan, Yi Jin, M. G. Zhao, Y. H. Yang, J. Zhu, Z. Jiao, Fu-Hu Liu, W. S. Cheng, D. M. Li, G. Li, X. H. Mo, Y. Nefedov, H. Xiao, H. B. Li, C. Y. Guan, Tao Sun, H. S. Chen, Alperen Yuncu, M. Rolo, S. H. Zhang, O. Bakina, Y. M. Ma, Z. P. Mao, Y. B. Zhao, H. Muramatsu, A. Khoukaz, Q. Zhou, N. Huesken, Y. H. Tan, Xiangcheng Pan, G. A. Chelkov, L. Q. Qin, H. L. Dai, Dong E. Liu, X. H. Li, L. Wollenberg, S. Spataro, A. Gilman, T. Y. Qi, Y. J. Xiao, B. Zhong, L. B. Guo, R. B. de Boer, J. Dong, C. D. Fu, Y. Ding, Xingchao Dai, P. X. Shen, Z. Wu, M. Pelizaeus, Shensheng Han, Q. M. Ma, L. Y. Dong, B. J. Liu, S. Janchiv, X. Liu, Zhenxiong Yuan, L. Koch, A. N. Zhu, Tao Zhang, Y. G. Xie, C. Q. Feng, G. F. Chen, M. Himmelreich, X. R. Chen, Y. Hu, S. Ahmed, T. Y. Xing, D. Y. Chen, C. F. Redmer, R. P. Guo, S. Q. Qu, F. Cossio, Z. B. Li, W. Ikegami Andersson, T. Liu, J. F. Qiu, Ch. Rosner, Lei Li, L. Fava, W. M. Song, J. H. Zou, S. Nisar, W. Kühn, Z. Y. Deng, Hai-Tian Wang, R. Baldini Ferroli, Xu Shan, M. Maggiora, Ling Zhao, Ruiting Ma, Y. P. Guo, C. Zhong, Z. Qian, S. X. Du, F. Weidner, M. Bertani, C. J. Tang, Y. Yuan, S. S. Sun, Z. Y. You, L. Z. Liao, Zhi Yang, P. Kiese, H. Liang, Yuan Hou, Z. A. Zhu, F. Nerling, C. Li, Krisztian Peters, W. L. Yuan, Lei Zhao, M. Kuemmel, Matthew Glenn Kurth, Q. Ouyang, W. Shan, Y. P. Lu, W. H. Wang, S. H. Zhu, S. Malde, R. A. Briere, M. Albrecht, J. F. Hu, M. Z. Wang, Z. L. Hou, A. Calcaterra, Xiao-Rui Lyu, Lingxuan Zhang, R. E. Mitchell, Magnus Wolke, Y. F. Liang, C. X. Lin, A. Q. Guo, J. Tang, D. Bettoni, Jianping Zheng, B. Wang, W. X. Gong, J. D. Lu, C. Schnier, X. T. Huang, G. Rong, Z. X. Meng, X. A. Xiong, B. C. Ke, A. A. Zafar, Q. Zhao, I. K. Keshk, X. F. Cui, L. L. Ma, L. Gong, L. G. Xia, G. S. Huang, Evelina Gersabeck, Y. K. Heng, T. T. Han, S. J. Zhao, P. W. Luo, C. P. Shen, S. S. Fang, T. Yu, Y. B. Liu, X. K. Zhou, T. Held, C. Z. Yuan, N. Cao, G. F. Cao, X. S. Jiang, C. W. Wang, Wei Xu, H. B. Jiang, M. Irshad, W. Gradl, Haiping Peng, X. P. Qin, U. Wiedner, I. Denysenko, C. X. Liu, H. H. Zhang, W. J. Zhu, Xin Wu, M. Lellmann, S. Maldaner, W. D. Li, B. T. Tsednee, Dan Wang, J. Bloms, M. Fritsch, M. Kavatsyuk, H. C. Shi, A. Amoroso, J. F. Sun, Wenbin Qian, Y. X. Song, M. Qi, H. J. Yang, W. Y. Sun, Shuai Liu, A. Dbeyssi, Z. H. Qin, B. X. Zhang, S. Marcello, K. Y. Liu, I. Uman, Guangyi Zhang, Y. Zeng, I. Garzia, Zhe Sun, V. Rodin, R. Poling, X D Shi, R. S. Shi, P. Adlarson, S. Nakhoul, Y. J. Mao, J. Libby, X. L. Lu, Yaquan Fang, M. Greco, J. L. Zhang, M. Destefanis, Z. Ning, S. Jaeger, S. Y. Xiao, M. Rump, Gang Zhao, X. L. Gao, X. P. Xu, X. B. Ji, M. H. Gu, K. H. Rashid, Y. B. Chen, R. Kiuchi, K. Begzsuren, P. Larin, Zujian Wang, Xiaofeng Zhu, Y. Bai, D. C. Shan, J. J. Song, C. Dong, S. Sosio, Y. F. Wang, L. Sun, F. Bianchi, C. X. Yu, T. Holtmann, Q. J. Xu, J. G. Messchendorp, Joachim Pettersson, P. Patteri, G. Y. Tang, J. P. Dai, F. F. Sui, H. Cai, X. H. Xie, B. Zheng, R. G. Ping, J. L. Ping, A. Bortone, Alexey Zhemchugov, H. M. Hu, Z. A. Liu, Xuanhong Lou, John Jake Lane, Viktor Thorén, Guoqiang Yu, L. Q. Huang, V. Prasad, Nasser Kalantar-Nayestanaki, Y. Ban, P. Weidenkaff, S. J. Chen, Jacek Biernat, C. L. Luo, I. B. Nikolaev, S. P. Wen, T. Hussain, R. Kliemt, K. Schoenning, Y. Gao, B. S. Zou, G. Wilkinson, Niklaus Berger, Yue Pan, I. Balossino, Y. Schelhaas, J. H. Yin, M. Shao, Y. T. Gu, Y. Zhang, Jinfei Wu, A. Pathak, A. Mangoni, Jie Yu, A. Rivetti, T. Johansson, J. F. Chang, Ke Li, A. Sarantsev, D. H. Wei, J. S. Lange, O. B. Kolcu, T. J. Min, X. Cai, L. Lavezzi, G. Cibinetto, X. Q. Hao, X. L. Wang, H. R. Qi, Q. Q. Song, Andrzej Kupsc, M. L. Chen, F. X. Lu, Serkant Ali Cetin, A. Guskov, S. Qian, Q. An, J. B. Liu, Y. J. Sun, W. Imoehl, J. B. Jiao, F. Feldbauer, F. H. Heinsius, F. A. Harris, W. L. Chang, Cong-Feng Qiao, H. Leithoff, N. Yu. Muchnoi, X. S. Kang, S. L. Olsen, and Teresa Lenz

Subjects
Physics, Particle physics, Branching fraction, High Energy Physics::Phenomenology, General Physics and Astronomy, Polarization (waves), Lambda, 01 natural sciences, Helicity, Omega, Amplitude, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit), Spin-½
Abstract

We present an analysis of the process $\psi(3686) \to \Omega^- \bar{\Omega}^+$ ($\Omega^-\to K^-\Lambda$, $\bar{\Omega}^+\to K^+\bar{\Lambda}$, $\Lambda\to p\pi^-$, $\bar{\Lambda}\to \bar{p}\pi^+$) based on a data set of $448\times 10^6$ $\psi(3686)$ decays collected with the BESIII detector at the BEPCII electron-positron collider. The helicity amplitudes for the process $\psi(3686) \to \Omega^- \bar{\Omega}^+$ and the decay parameters of the subsequent decay $\Omega^-\to K^-\Lambda$ $(\bar{\Omega}^+\to K^+\bar{\Lambda})$ are measured for the first time by a fit to the angular distribution of the complete decay chain. The branching fraction of $\psi(3686) \to \Omega^- \bar{\Omega}^+$ is measured to be $(5.82\pm 0.12\pm 0.24)\times 10^{-5}$, with an improved precision compared to previous measurements.

Published
2021

6. Measurements of e+e−→ηcπ+π−π0 , ηcπ+π− , and ηcπ0γ at s from 4.18 to 4.60 GeV, and search for a Zc state close to the DD¯ threshold decaying to ηcπ at s=4.23 GeV

Author

Fang Liu, Q. A. Malik, Y. Ding, G. Mezzadri, W. C. Yan, U. Wiedner, I. Denysenko, Zhiqiang Liu, Y. F. Wang, B. J. Liu, T. Y. Xing, D. Y. Chen, L. M. Gu, M. N. Achasov, L. P. Zhou, H. B. Li, Zongyuan Wang, X. N. Ma, Shuai Liu, Cheng Li, Y. M. Ma, T. Hussain, X. Y. Ma, W. X. Gong, C. L. Luo, Q. Zhou, W. Kühn, A. Pathak, C. H. Li, Z. Y. You, Z. P. Mao, J. F. Sun, B. Wang, Guangyi Zhang, Z. A. Zhu, M. Fritsch, J. Fang, F. Weidner, B. Zhong, L. B. Guo, Lei Li, W. L. Yuan, A. Q. Guo, C. W. Wang, W. Imoehl, M. Kavatsyuk, Q. Ouyang, G. Wilkinson, S. Marcello, W. S. Cheng, Y. Zeng, Yao Zhang, A. N. Zhu, Y. F. Long, K. Ravindran, X. H. Liu, L. Q. Qin, Yi Zhang, K. Y. Liu, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Ch. Rosner, H. C. Shi, X. H. Bai, Zhe Sun, G. Li, Tao Zhang, S. S. Fang, C. Y. Guan, S. Lusso, W. M. Song, C. P. Shen, X. L. Wang, J. P. Dai, M. H. Ye, P. Kiese, Yuan Hou, R. A. Briere, B. X. Zhang, X. S. Jiang, S. Ahmed, Y. X. Yang, T. Z. Han, Yanping Huang, R. X. Yang, Wei Xu, Bibo Ke, Y. B. Liu, A. Pitka, P. Adlarson, Xu Shan, T. T. Han, W. B. Yan, Andrzej Kupsc, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, C. D. Fu, C. Q. Feng, X. R. Chen, Meng Wang, J. Libby, J. J. Song, L. Sun, Z. Y. Deng, Z. H. Qin, L. J. Wu, Q. Liu, S. Pacetti, Yaquan Fang, M. Greco, Shou-hua Zhu, Hai-Tian Wang, Z. Ning, S. Y. Xiao, Tao Luo, Muhammad Irshad, W. G. Li, A. G. Denig, E. M. Gersabeck, F. F. Sui, F. Feldbauer, Y. J. Mo, Y. K. Sun, M. Kuessner, M. L. Chen, X. L. Luo, L. Y. Dong, M. H. Gu, R. Kiuchi, M. X. Luo, Dylan Jaide White, D. V. Dedovich, J. Q. Zhang, S. J. Zhao, Z. J. Chen, N. Huesken, Y. H. Tan, L. L. Ma, L. Gong, F. A. Harris, Ke Li, M. Y. Dong, John Jake Lane, Guoqiang Yu, W. L. Chang, B. X. Yu, H. J. Lu, J. G. Lu, K. Begzsuren, F. X. Lu, Z. L. Huang, Feng Liu, M. Ablikim, X. Y. Jiang, X. L. Gao, Xujin Yuan, C. X. Yu, S. Spataro, X. L. Ji, S. L. Yang, L. G. Xia, W. P. Wang, F. Bianchi, A. Amoroso, R. Kliemt, Q. J. Xu, A. Mangoni, Q. Zhao, K. Schoenning, H. M. Liu, B. S. Zou, J. F. Hu, A. Guskov, X. K. Zhou, H. Leithoff, J. B. Zhao, Q. P. Ji, I. R. Boyko, Jie Yu, M. Albrecht, S. B. Liu, F. Li, A. Dbeyssi, A. Bortone, Xuanhong Lou, G. F. Cao, Y. H. Zheng, Y. Z. Sun, F. E. Maas, Jinfei Wu, F. C. Ma, T. Hu, J. H. Zou, B. Zheng, R. G. Ping, Tao Sun, Y. Nefedov, D. Y. Liu, S. H. Zhang, X. Y. Shen, Z. Y. Zhang, Shulei Zhang, Viktor Thorén, Angelo Rivetti, W. D. Li, T. J. Min, C. H. Heinz, Cong-Feng Qiao, K. J. Zhu, H. Liang, Nasser Kalantar-Nayestanaki, X D Shi, X. L. Li, G. Cibinetto, H. S. Chen, Alperen Yuncu, Y. J. Mao, S. S. Sun, L. Z. Liao, O. Bakina, Huanhuan Liu, C. Dong, I. K. Keshk, Z. A. Liu, G. Felici, S. Sosio, A. Calcaterra, Z. G. Zhao, M. Kuemmel, Matthew Glenn Kurth, N. Yu. Muchnoi, P. W. Luo, V. Prasad, G. A. Chelkov, H. L. Dai, H. X. Yang, I. Garzia, X. S. Kang, Xu Yan, X. F. Cui, R. S. Shi, C. X. Lin, Yu Bai, H. H. Zhang, Alexander Leon Gilman, Yao Wang, R. T. Ma, Y. H. Zhang, F. De Mori, Y. Ban, P. Weidenkaff, Zhang Li, P. X. Shen, S. L. Olsen, Xin Wu, Yue Pan, H. B. Liu, Z. Wu, M. Rump, Gang Zhao, G. S. Huang, I. Balossino, Huihui Liu, Y. G. Xie, R. E. Mitchell, S. P. Wen, T. Liu, J. F. Qiu, H. J. Li, Y. Fu, Z. Y. Wang, M. Lellmann, X. H. Li, S. Maldaner, X. S. Qin, X. R. Zhou, W. J. Zhu, Teresa Lenz, L. Wollenberg, Y. X. Zhao, Y. H. Xie, Y. Hu, Zujian Wang, Ke Wang, W. Y. Sun, X. D. Shi, Dan Wang, Xingchao Dai, X. Sun, Zhiqing Zhang, V. Rodin, Ke Liu, J. G. Messchendorp, X. F. Wang, B. Kopf, H. Y. Zhang, R. Farinelli, S. Gu, Q. M. Ma, I. Uman, L. Fava, Zhi Yang, Joachim Pettersson, R. Poling, K. L. He, F. H. Heinsius, T. Johansson, J. F. Chang, Y. C. Zhu, X. P. Xu, X. B. Ji, M. Maggiora, Ling Zhao, Xiangcheng Pan, R. B. de Boer, Zhenxiong Yuan, Y. Yuan, Ziyi Wang, S. W. Han, H. L. Ma, D. M. Li, O. B. Kolcu, B. L. Wang, H. R. Qi, X. Cai, L. Lavezzi, M. Z. Wang, H. Muramatsu, Y. B. Zhao, G. Y. Tang, W. Shan, X. H. Xie, H. Xiao, Yan Zhang, Lei Zhao, Jimin Zhao, T. Held, G. F. Chen, F. Nerling, M. Pelizaeus, Z. L. Hou, Xiao-Rui Lyu, Jie Zhao, Lingxuan Zhang, Y. X. Tan, P. Patteri, P. L. Li, J. L. Li, Alexey Zhemchugov, H. M. Hu, T. Holtmann, L. Koch, A. Khoukaz, J. Dong, F. H. Liu, Nicolas Berger, R. Baldini Ferroli, M. Rolo, J. Y. Liu, J. Y. Zhang, S. Nisar, Z. J. Xiao, C. F. Redmer, J. Q. Li, M. Qi, Krisztian Peters, S. Malde, H. J. Yang, J. W. Zhang, R. Aliberti, C. J. Tang, Y. P. Lu, F. Cossio, Ruiting Ma, Y. N. Gao, Z. Qian, J. Bloms, Haiping Peng, Y. Zhang, Feng Yan, C. Z. Yuan, N. Cao, X. L. Lu, M. M. Ma, T. Y. Qi, D. C. Shan, M. Bertani, M. Himmelreich, L. Yang, G. X. Sun, J. V. Bennett, Li Yan, J. Tang, H. B. Jiang, Jiawei Zhang, W. H. Wang, Y. K. Heng, Z. Jiao, T. Yu, W. Gradl, Yunlong Zhang, D. Bettoni, Y. X. Song, J. L. Zhang, Jianping Zheng, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, Wenbin Qian, S. X. Du, Y. G. Gao, M. Destefanis, Magnus Wolke, Y. F. Liang, X. Q. Hao, S. Nakhoul, S. Jaeger, P. Larin, L. D. Liu, J. J. Xu, C. X. Liu, Z. X. Meng, X. A. Xiong, A. A. Zafar, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, K. H. Rashid, J. B. Liu, K. Goetzen, Y. J. Sun, Yifan Yang, Y. T. Liang, S. J. Chen, S. Y. Li, J. B. Jiao, L. H. Wu, R. Kappert, Yi Jin, Y. Schelhaas, G. F. Xu, Y. J. Xiao, S. Jin, Anita, S. Janchiv, C. Zhong, Q. Q. Song, Y. P. Guo, Serkant Ali Cetin, Jianyu Zhang, J. D. Lu, C. Schnier, Y. Q. Wang, Lei Zhang, X. T. Huang, G. Rong, X. H. Mo, L. L. Wang, H. Cai, L. Q. Huang, Jacek Biernat, I. B. Nikolaev, J. H. Yin, M. Shao, Y. T. Gu, C. X. Yue, M. Scodeggio, A. Sarantsev, D. H. Wei, P. R. Li, and J. S. Lange

Subjects
Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, 0103 physical sciences, Pi, Resonance, State (functional analysis), 010306 general physics, Ground state, 01 natural sciences, Luminosity, Bar (unit)
Abstract

We study ηc production at center-of-mass energies s from 4.18 to 4.60 GeV in e+e- annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding to 7.3 fb-1 of integrated luminosity. We measure the cross sections of the three different exclusive reactions e+e-→ηcπ+π-π0, e+e-→ηcπ+π-, and e+e-→ηcπ0γ. We find significant ηc production in e+e-→ηcπ+π-π0 at s of 4.23 GeV and 4.26 GeV and observe a significant energy-dependent Born cross section that we measure to be consistent with the production via the intermediate Y(4260) resonance. In addition, we perform a search for a charmoniumlike Zc state close to the DD¯ threshold that decays to ηcπ, involving ground state charmonium, and observe no signal. Corresponding upper limits on the cross section of ηc and Zc production are provided, where the yields are not found to be significant.

Published
2021

7. Search for the X(2370) and observation of ηc→ηηη′ in J/ψ→γηηη′

Author

M. M. Ma, Zhang Li, J. Tang, Z. Ning, S. Y. Xiao, Y. X. Zhao, Y. H. Xie, Yunlong Zhang, D. Bettoni, J. L. Zhang, M. Maggiora, Ling Zhao, V. Rodin, L. Koch, Q. Liu, Lei Zhao, Z. L. Hou, G. X. Sun, J. V. Bennett, Li Yan, Jianping Zheng, A. Khoukaz, H. Liang, X. K. Zhou, X. P. Xu, X. B. Ji, R. Baldini Ferroli, R. E. de Boer, Q. P. Ji, Z. X. Meng, X. A. Xiong, Z. Jiao, S. X. Du, Y. C. Xu, L. L. Ma, P. Patteri, Jinfei Wu, H. B. Liu, A. A. Zafar, L. Gong, L. G. Xia, A. Amoroso, Krisztian Peters, C. Z. Yuan, N. Cao, K. Y. Liu, M. Destefanis, K. H. Rashid, S. Malde, M. Z. Wang, Y. B. Zhao, W. Shan, A. Q. Guo, C. W. Wang, Huanhuan Liu, G. Felici, B. Kopf, Y. T. Liang, S. J. Chen, K. L. He, Ziyi Wang, A. Dbeyssi, Y. Ding, W. Imoehl, X. H. Liu, L. Q. Qin, L. D. Liu, S. Qian, Q. An, Jialun Ping, S. Y. Li, J. X. Teng, Haiping Peng, J. Dong, R. Kliemt, Xiao-Rui Lyu, B. J. Liu, W. M. Song, C. Zhong, J. P. Dai, Tao Luo, T. Y. Xing, Angelo Rivetti, S. W. Han, Jianyu Zhang, Jimin Zhao, D. Y. Chen, S. Ahmed, M. Kuessner, A. Mangoni, A. Guskov, B. X. Yu, Y. X. Yang, X. Y. Zhang, Shulei Zhang, Ke Wang, W. Y. Sun, J. J. Xu, X. Sun, H. Y. Zhang, Ke Liu, P. L. Li, R. Poling, X. L. Wang, H. S. Chen, J. D. Lu, C. Schnier, F. H. Heinsius, Alperen Yuncu, C. F. Redmer, W. Kühn, B. L. Wang, Jie Yu, Z. H. Qin, Y. Q. Wang, Lei Zhang, J. Q. Li, Wen-Zhao Liu, Xujin Yuan, Z. Y. You, Z. A. Zhu, X. T. Huang, G. Rong, F. De Mori, S. Nisar, C. J. Tang, Andrzej Kupsc, M. Kuemmel, Matthew Glenn Kurth, T. Johansson, J. F. Chang, Q. A. Malik, G. Mezzadri, W. C. Yan, S. B. Liu, C. X. Liu, H. L. Dai, T. J. Min, Y. P. Lu, M. L. Chen, X D Shi, Y. J. Mao, H. X. Yang, Y. F. Wang, Zhiqiang Liu, J. Bloms, N. Hüsken, J. B. Liu, K. J. Zhu, Tao Sun, I. Garzia, Q. Zhao, H. J. Lu, J. G. Lu, X. L. Gao, O. B. Kolcu, H. R. Qi, Y. Nefedov, X. Cai, M. Bertani, L. Lavezzi, L. H. Wu, L. Yang, G. Cibinetto, G. A. Chelkov, Y. Z. Sun, L. M. Gu, M. N. Achasov, G. Y. Tang, C. P. Shen, I. K. Keshk, L. P. Zhou, F. E. Maas, Yan Zhang, X. H. Xie, C. Dong, X. F. Cui, Yi Jin, T. Hu, F. X. Lu, S. Sosio, Huihui Liu, Y. M. Ma, H. B. Jiang, Y. H. Zheng, Cong-Feng Qiao, L. J. Wu, C. X. Lin, Z. P. Mao, G. F. Chen, M. X. Luo, Dylan Jaide White, R. Kappert, Y. J. Sun, Yifan Yang, J. Y. Zhang, X. L. Li, Jiawei Zhang, O. Bakina, Y. J. Xiao, G. Wilkinson, Y. J. Mo, J. G. Messchendorp, Alexander Leon Gilman, M. Rump, Gang Zhao, N. Yu. Muchnoi, X. L. Ji, W. S. Cheng, Yao Zhang, G. Li, Jie Zhao, S. Janchiv, X. S. Kang, Y. H. Zhang, D. V. Dedovich, Xu Yan, Joachim Pettersson, R. T. Ma, J. Fang, W. Gradl, X. F. Wang, L. Z. Liao, Y. X. Song, Alexey Zhemchugov, H. M. Hu, G. F. Xu, S. L. Olsen, T. Holtmann, S. Jin, G. S. Huang, Z. Y. Zhang, Magnus Wolke, M. H. Ye, Y. F. Liang, F. H. Liu, M. Qi, Q. M. Ma, H. J. Li, P. X. Shen, Z. Wu, H. J. Yang, C. D. Fu, J. Y. Liu, W. J. Zhu, X. H. Li, L. Wollenberg, Z. Y. Wang, W. G. Li, A. G. Denig, C. Q. Feng, X. R. Chen, Ch. Rosner, Nicolas Berger, Teresa Lenz, R. S. Shi, J. L. Li, X. D. Shi, Dan Wang, Y. K. Sun, M. Rolo, Yao Wang, J. W. Zhang, R. Aliberti, S. Gu, J. B. Zhao, J. F. Sun, F. F. Sui, Z. Y. Deng, Hai-Tian Wang, S. Spataro, Y. K. Heng, I. R. Boyko, M. H. Gu, Y. G. Xie, Y. Hu, J. Libby, Zhiqing Zhang, Y. Yuan, M. Albrecht, X. L. Lu, Y. Schelhaas, Y. N. Gao, Lei Li, Xingchao Dai, S. Marcello, H. M. Liu, R. Kiuchi, Yaquan Fang, M. Greco, Shou-hua Zhu, Y. Zhang, Zujian Wang, W. D. Li, F. Cossio, Y. Zeng, Zhe Sun, Ruiting Ma, Z. Qian, I. Uman, J. F. Hu, S. H. Zhang, X. Y. Shen, K. Goetzen, Feng Yan, S. Lusso, X. Q. Hao, G. F. Cao, H. B. Li, John Jake Lane, Zongyuan Wang, C. L. Luo, D. C. Shan, Q. Zhou, S. Nakhoul, Q. Q. Song, S. Jaeger, Y. B. Chen, J. Z. Zhang, Guoqiang Yu, Y. Fu, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, Z. J. Chen, J. J. Song, L. Sun, Z. J. Xiao, B. Zhong, L. B. Guo, F. Weidner, W. L. Yuan, Q. Ouyang, X. H. Bai, P. Larin, K. Schoenning, B. S. Zou, X. N. Ma, Y. C. Zhu, Y. P. Guo, C. X. Yu, R. Farinelli, A. N. Zhu, Tao Zhang, S. S. Fang, C. Y. Guan, T. T. Han, J. Q. Zhang, H. Xiao, S. J. Zhao, Y. B. Liu, H. L. Ma, T. Held, T. Z. Han, Yanping Huang, S. L. Yang, Serkant Ali Cetin, D. M. Li, G. R. Liao, T. Y. Qi, M. Himmelreich, B. Wang, Xu Shan, H. Muramatsu, E. M. Gersabeck, Q. J. Xu, M. Pelizaeus, W. H. Wang, T. Yu, A. Bortone, Xuanhong Lou, Viktor Thorén, X. L. Luo, M. Fritsch, A. Calcaterra, Z. G. Zhao, Nasser Kalantar-Nayestanaki, M. Kavatsyuk, Yue Pan, K. Begzsuren, W. P. Wang, F. Bianchi, I. Balossino, H. C. Shi, B. Zheng, R. G. Ping, Wenbin Qian, Y. G. Gao, Yu Bai, H. H. Zhang, D. Y. Liu, J. B. Jiao, Xin Wu, M. Lellmann, S. Maldaner, B. X. Zhang, C. H. Heinz, Z. A. Liu, F. Feldbauer, L. Y. Dong, V. Prasad, Z. L. Huang, Feng Liu, M. Ablikim, Y. Ban, P. Weidenkaff, S. P. Wen, X. S. Qin, X. R. Zhou, Cheng Li, Xiangcheng Pan, Zhenxiong Yuan, Y. X. Tan, X. H. Mo, L. L. Wang, H. Cai, L. Q. Huang, Jacek Biernat, I. B. Nikolaev, J. H. Yin, M. Shao, Y. T. Gu, C. X. Yue, M. Scodeggio, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, P. Kiese, Yuan Hou, R. A. Briere, X. S. Jiang, R. X. Yang, Wei Xu, A. Pitka, P. Adlarson, T. Hussain, X. Y. Ma, W. X. Gong, A. Pathak, C. H. Li, Y. F. Long, K. Ravindran, Bibo Ke, W. B. Yan, S. Pacetti, Yi Zhang, Y. H. Tan, S. Q. Qu, W. Ikegami Andersson, Ke Li, Fang Liu, U. Wiedner, I. Denysenko, Shuai Liu, Guangyi Zhang, M. Y. Dong, A. Lavania, J. H. Zou, S. S. Sun, R. E. Mitchell, F. Li, F. C. Ma, T. Liu, J. F. Qiu, L. Fava, Zhi Yang, F. Nerling, Meng Wang, Muhammad Irshad, F. A. Harris, W. L. Chang, H. Leithoff, and P. W. Luo

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Product (mathematics), 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 01 natural sciences, Prime (order theory)
Abstract

Using a sample of $1.31\times10^{9} ~J/\psi$ events collected with the BESIII detector, we perform a study of $J/\psi\to\gamma\eta\eta\eta^{\prime}$ to search for the $X(2370)$ and $\eta_{c}$ in the $\eta\eta\eta^{\prime}$ invariant mass distribution. No significant signal for the $X(2370)$ is observed, and we set an upper limit for the product branching fraction of ${\cal B}(J/\psi\to\gamma X(2370)\cdot{\cal B}(X(2370)\to\eta\eta\eta^{\prime}) < 9.2\times10^{-6}$ at the 90% confidence level. A clear $\eta_{c}$ signal is observed for the first time, yielding a product branching fraction of ${\cal B}(J/\psi\to \gamma\eta_{c})\cdot{\cal B}(\eta_{c}\to \eta\eta\eta^{\prime}) = (4.86\pm0.62~({\rm stat.})\pm0.45~({\rm sys.}))\times10^{-5}$.

Published
2021

8. Measurement of cross section for e+e−→Ξ−Ξ¯+ near threshold at BESIII

Author

M. Kuemmel, Matthew Glenn Kurth, X. F. Cui, G. S. Huang, W. J. Zhu, X. D. Shi, Dan Wang, S. Gu, J. F. Sun, M. Bertani, S. Marcello, Y. Zeng, Zhe Sun, S. Lusso, H. J. Lu, J. G. Lu, C. H. Heinz, Y. B. Chen, J. Z. Zhang, H. S. Sang, J. J. Song, S. L. Yang, L. Sun, P. Kiese, Z. A. Liu, V. Prasad, Yuan Hou, H. Y. Zhang, L. Yang, F. E. Maas, Tao Luo, Y. Ban, P. Weidenkaff, W. Imoehl, P. W. Luo, T. Hu, G. Mezzadri, W. C. Yan, L. D. Liu, X. H. Liu, L. Q. Qin, L. J. Wu, Xu Yan, Zhiqiang Liu, Huanhuan Liu, J. Tang, M. X. Luo, Dylan Jaide White, B. X. Yu, X. L. Wang, G. F. Chen, R. A. Briere, X. S. Jiang, Zhang Li, H. B. Jiang, Jiawei Zhang, S. P. Wen, X. S. Qin, X. R. Zhou, Cheng Li, J. B. Jiao, L. M. Gu, M. N. Achasov, L. P. Zhou, Yunlong Zhang, M. H. Liu, D. V. Dedovich, C. Zhong, D. Bettoni, G. Felici, J. Y. Zhang, Xiangcheng Pan, B. Wang, V. Rodin, Shulei Zhang, Andrzej Kupsc, X. L. Li, Z. P. Mao, J. J. Xu, J. L. Zhang, Y. J. Mo, W. G. Li, A. G. Denig, W. Gradl, Y. H. Zheng, F. Li, H. S. Chen, Alperen Yuncu, R. T. Ma, M. Fritsch, Zhenxiong Yuan, Xujin Yuan, T. Y. Qi, Q. Liu, H. L. Dai, Wei Xu, M. Kavatsyuk, M. L. Chen, X. P. Xu, X. B. Ji, Y. X. Song, Y. C. Zhu, Fang Liu, O. Bakina, P. X. Shen, Z. Wu, J. Fang, Jianping Zheng, Jianyu Zhang, R. Farinelli, S. B. Liu, A. Pitka, F. C. Ma, X. D. Zhang, M. Himmelreich, P. Patteri, H. Xiao, H. C. Shi, Y. Nefedov, Y. K. Heng, T. T. Han, L. L. Ma, P. Adlarson, L. Koch, A. Khoukaz, M. Qi, F. X. Lu, T. Held, U. Wiedner, M. Kuessner, W. H. Wang, Y. K. Sun, S. Spataro, Ch. Rosner, Zhiqing Zhang, J. B. Zhao, Q. P. Ji, I. R. Boyko, L. Gong, S. J. Zhao, H. J. Yang, T. Yu, J. D. Lu, R. Baldini Ferroli, I. Denysenko, L. G. Xia, Y. X. Tan, R. Kliemt, A. Mangoni, J. Libby, B. X. Zhang, S. X. Du, Y. C. Xu, H. L. Ma, K. Y. Liu, X. K. Zhou, C. Schnier, Y. Q. Wang, T. Liu, J. F. Qiu, S. H. Zhang, H. J. Li, A. Amoroso, X. H. Mo, L. Fava, Zhi Yang, Q. J. Xu, D. M. Li, Krisztian Peters, S. Malde, A. Guskov, Jie Yu, C. X. Liu, Yaquan Fang, M. Greco, X. Y. Shen, A. Bortone, M. Z. Wang, Lei Li, M. H. Ye, Xuanhong Lou, Viktor Thorén, Shou-hua Zhu, Y. B. Zhao, F. Nerling, J. J. Zhang, H. M. Liu, Lei Zhang, M. Destefanis, Y. Ding, X. H. Li, L. Wollenberg, Nasser Kalantar-Nayestanaki, H. Muramatsu, Cong-Feng Qiao, L. Z. Liao, B. J. Liu, X. T. Huang, A. Dbeyssi, A. Calcaterra, Z. G. Zhao, J. X. Teng, Yue Pan, J. F. Hu, X. L. Lu, I. Balossino, John Jake Lane, Xingchao Dai, L. L. Wang, H. Cai, Tao Sun, Wenbin Qian, Magnus Wolke, K. Ravindran, M. Pelizaeus, Y. F. Liang, T. Y. Xing, D. Y. Chen, L. Q. Huang, M. Albrecht, Jacek Biernat, X. Dong, Y. G. Gao, G. Rong, G. F. Cao, N. Yu. Muchnoi, Guoqiang Yu, X. S. Kang, Haiping Peng, W. Shan, Yao Wang, T. J. Min, K. J. Zhu, F. F. Sui, G. A. Chelkov, X D Shi, Z. X. Meng, W. D. Li, Angelo Rivetti, J. L. Li, M. H. Gu, T. Holtmann, Y. H. Zhang, G. Y. Tang, W. Kühn, H. K. Sun, Ke Wang, Shuai Liu, K. H. Qi, R. Kiuchi, Zongyuan Wang, M. Rolo, W. Y. Sun, K. Schoenning, B. S. Zou, X. H. Xie, X. Sun, G. Cibinetto, M. G. Zhao, Y. H. Yang, Y. J. Mao, X. X. Ma, R. P. Guo, J. Zhu, Guangyi Zhang, Z. Y. You, A. A. Zafar, Z. A. Zhu, J. Y. Liu, F. De Mori, S. L. Olsen, J. Dong, Li Yuan, S. Qian, Q. An, Jialun Ping, Jie Zhao, Z. J. Chen, D. C. Shan, H. X. Yang, L. Y. Dong, Yu Bai, Yi Zhang, H. H. Zhang, Christoph Herold, Z. H. Lei, I. Garzia, F. Weidner, T. Johansson, J. F. Chang, Z. Y. Wang, R. Poling, Alexey Zhemchugov, H. M. Hu, X. Y. Zhang, C. X. Yu, F. H. Heinsius, F. Cossio, Ruiting Ma, K. Goetzen, Teresa Lenz, G. Wilkinson, W. L. Yuan, Q. Ouyang, Xin Wu, Y. X. Zhao, Y. H. Xie, Y. F. Wang, W. S. Cheng, Yao Zhang, Meng Wang, Muhammad Irshad, X. H. Bai, F. H. Liu, Z. Qian, J. Q. Zhang, H. B. Liu, S. Q. Qu, S. S. Fang, C. Y. Guan, W. Ikegami Andersson, Huihui Liu, G. Li, Y. N. Gao, Nicolas Berger, O. B. Kolcu, Y. Zhang, H. Liang, J. B. Liu, B. Kopf, Y. B. Liu, Y. T. Liang, I. B. Nikolaev, C. D. Fu, C. Q. Feng, X. R. Chen, F. A. Harris, H. R. Qi, W. L. Chang, X. Cai, B. Zheng, R. G. Ping, J. H. Yin, J. G. Messchendorp, M. Maggiora, K. L. He, Ling Zhao, X. F. Wang, Feng Yan, M. Lellmann, E. M. Gersabeck, S. Maldaner, Y. J. Sun, Yifan Yang, M. Shao, Y. T. Gu, K. X. Su, C. P. Shen, C. X. Yue, C. Dong, Ziyi Wang, Q. M. Ma, Z. Y. Deng, L. Lavezzi, S. J. Chen, X. L. Luo, H. Leithoff, I. Uman, M. Scodeggio, J. W. Zhang, R. Aliberti, T. Hussain, S. Sosio, Lei Zhao, Y. P. Lu, Hai-Tian Wang, X. Y. Ma, Z. L. Hou, Bibo Ke, S. Y. Li, K. Begzsuren, W. X. Gong, Joachim Pettersson, Jimin Zhao, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, H. B. Li, Y. Yuan, F. Feldbauer, C. L. Luo, W. P. Wang, S. Nisar, F. Bianchi, Yan Zhang, A. Pathak, W. B. Yan, S. Ahmed, R. E. de Boer, A. Q. Guo, C. W. Wang, Z. L. Huang, P. L. Li, Q. Zhou, Feng Liu, C. J. Tang, Z. Ning, S. Y. Xiao, Y. Schelhaas, Y. X. Yang, C. H. Li, Ke Liu, Z. J. Xiao, M. Ablikim, W. M. Song, S. Pacetti, D. Y. Liu, L. H. Wu, C. Z. Yuan, R. Kappert, X. Q. Hao, N. Cao, B. Zhong, L. B. Guo, C. F. Redmer, Yi Jin, Y. P. Guo, S. Nakhoul, Y. H. Tan, Ke Li, Q. Zhao, Serkant Ali Cetin, M. Y. Dong, G. F. Xu, S. Janchiv, S. Jin, S. Jaeger, Y. Z. Sun, A. Lavania, A. N. Zhu, Z. H. Qin, J. H. Zou, I. K. Keshk, P. Larin, C. X. Lin, S. S. Sun, Alexander Leon Gilman, M. Rump, Gang Zhao, Jinfei Wu, R. E. Mitchell, R. S. Shi, Yanping Huang, Xu Shan, Zujian Wang, Xiao-Rui Lyu, J. Q. Li, Wen-Zhao Liu, J. Bloms, N. Hüsken, X. L. Ji, M. M. Ma, Z. Y. Zhang, Y. G. Xie, Y. Hu, G. X. Sun, Li Yan, and Z. Jiao

Subjects
Physics, Nuclear physics, Cross section (physics), Near threshold, 010308 nuclear & particles physics, Bar (music), 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract

The Born cross sections and effective form factors for process e(+)e(-) -> Xi(-)(Xi) over bar (+) are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total integra ...

Published
2021

9. Measurements of Sigma(+) and Sigma(-) time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV

Author

Zhiqing Liu, L. M. Gu, L. P. Zhou, Y. M. Ma, H. J. Lu, Y. X. Zhao Zhao, J. B. Jiao, T. Johansson, J. F. Chang, X. Liu, Y. H. Xie, L. Zhao, A. Rivetti, J. Q. Zhang, J. Fang, G. Felici, Y. F. Wang, M. Maggiora, Y. F. Long, K. Ravindran, Ch. Rosner, X. Cai, Lei Zhao, Xiao-Rui Lyu, T. T. Han, X. Pan, Yi Zhang, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Y. Nefedov, Meng Wang, Muhammad Irshad, Yan Zhang, Bingxuan Liu, G. Wilkinson, S. J. Zhao, J. Libby, Y. G. Gao, A. Khoukaz, W. H. Wang, W. Kühn, K. Goetzen, C. Z. Yuan, N. Cao, I. Denysenko, W. S. Cheng, Yao Zhang, Gang Chen, M. Greco, A. Pitka, Z.T. Sun, Wei Li, J. Q. Li, A. Q. Guo, G. Cibinetto, W. Imoehl, S.H. Zhu, Q. J. Xu, John Jake Lane, A. Bortone, Xuanhong Lou, Viktor Thorén, Guoqiang Yu, Z. Ning, S. Y. Xiao, A. Gilman, S. Malde, M. Z. Wang, Q.M. Ma, Guang Zhao, F. A. Harris, W. L. Chang, A. Zhemchugov, Nasser Kalantar-Nayestanaki, L. J. Wu, K. Schoenning, Y. Gao, X. Wu, Yue Pan, A. Sarantsev, S. L. Yang, C. Q. Feng, J. Bloms, I. Uman, J. Tang, J. F. Hu, H.R. Qi, J.H. Zou, X D Shi, Niklaus Berger, Y.Z. Sun, Z.X. Meng, Yu Lu, Hai-Tian Wang, H. Leithoff, C.L. Luo, P. Kiese, Yuan Hou, R. A. Briere, L. Yan, F.X. Lu, G. S. Huang, T. Hussain, X. Y. Ma, W. X. Gong, M. Rolo, H. Y. Zhang, M. Qi, X. S. Jiang, A. Pathak, Y. J. Mo, Haiping Peng, Y. J. Mao, Y. X. Tan, X. Wang, I. Garzia, P. Patteri, Xingguo Li, Zhiyong Zhang, J. Zhao, R. B. de Boer, Shiqun Li, W.Y. Sun, J.H. Yin, H. Liang, R. X. Yang, Wei Xu, P. Adlarson, R.P. Guo, S. Jaeger, B. Zhong, Yunlong Zhang, S. Qian, S. Ahmed, L. Zhang, Jinfei Wu, F. De Mori, W.G. Li, M. Albrecht, H. J. Yang, M. Savrié, J. G. Lu, H.X. Yang, Y.X. Yang, Zhenjun Xiao, Q. An, H. S. Chen, F. Li, M. Fritsch, X. Y. Zhang, X. L. Wang, Magnus Wolke, M. Kuemmel, Matthew Glenn Kurth, J. B. Liu, O.B. Kolcu, I.B. Nikolaev, L. Lavezzi, X. L. Ji, B. T. Tsednee, Huihui Liu, Bibo Ke, Xujin Yuan, M. Kuessner, S.A. Cetin, Y. F. Liang, Ke Wang, T. Hu, Jens Soeren Lange, C. Li, S. B. Liu, A. Yuncu, A. Mangoni, X. F. Cui, J. G. Messchendorp, W. B. Yan, S. Lusso, H.L. Ma, L. D. Liu, Ke Liu, F. F. Sui, M. H. Gu, R. Kiuchi, Y. J. Sun, Yifan Yang, Y. K. Heng, L.Q. Qin, M.H. Ye, X. Y. Shen, M. Ablikim, Xiongfei Wang, Jie Yu, P. X. Shen, X.S. Kang, X.Q. Hao, T. Y. Qi, Y. Schelhaas, J. P. Dai, D.H. Wei, X. L. Luo, C. W. Wang, C. X. Yu, Z. Wu, B. L. Wang, X. L. Lu, T. Yu, Xu Yan, T. Liu, L. Koch, X. K. Zhou, R. T. Ma, Q. Ji, R. Poling, Evelina Gersabeck, S. Pacetti, M.N. Achasov, K. J. Zhu, K. Zhu, Tao Sun, G.X. Sun, Y. G. Xie, Zhiqing Zhang, K. Begzsuren, L. Fava, M. X. Luo, Dylan Jaide White, Y. Hu, Zhi Yang, W. P. Wang, W. J. Zhu, X. D. Shi, H. R. Qi, Q. Q. Song, N. Huesken, Xiang Zhou, I. K. Keshk, P. W. Luo, Y.T. Liang, B. Zheng, R. G. Ping, Tao Luo, W. M. Song, C.X. Yue, T. Y. Xing, Y. Fu, I. Boyko, Z. A. Liu, F. Bianchi, S. F. Zhang, Wenbin Qian, D. Y. Chen, I. Balossino, S. X. Du, Jianping Zheng, H. J. Li, D. C. Shan, Z. H. Qin, C.X. Liu, C. X. Lin, O. Bakina, M. Rump, Y. H. Tan, V. Prasad, Y. C. Zhu, K. Liu, Ke Li, Y. Fang, L. K. Li, M. Himmelreich, Z. Y. You, S. Marcello, Y. H. Zheng, Y. Ban, P. Weidenkaff, G. Y. Tang, B. X. Yu, Y. Zeng, Z. A. Zhu, W. C. Yan, F. H. Heinsius, Q. Liu, D. Y. Liu, Cong-Feng Qiao, F. Cossio, Jie Zhao, Z.L. Hou, T. J. Min, H.B. Liu, V. Rodin, F.H. Liu, T. Weber, X. H. Xie, Y.T. Gu, X. R. Zhou, L. L. Ma, L. Gong, T. Held, Libo Guo, L. G. Xia, A. Amoroso, J.L. Ping, Y. K. Sun, Z. Huang, R. Farinelli, G. Li, H. M. Hu, X. B. Ji, K.Y. Liu, Xiaofeng Zhu, J. Z. Zhang, Y. H. Zhang, Cheng Li, C. P. Shen, S. Spataro, X. P. Xu, G. Mezzadri, J. J. Song, R. Baldini Ferroli, A. Dbeyssi, R. Kliemt, L. Sun, L.H. Wu, B. Kopf, J. W. Zhang, Stephen Lars Olsen, Lei Li, H. M. Liu, G. Chelkov, B.J. Liu, T. Lenz, D. M. Li, M. Destefanis, X.P. Qin, Y. Jin, K. L. He, Zongyuan Wang, Yi Chen, G.F. Xu, H. L. Dai, Andrzej Kupsc, Ziyi Wang, Z. Y. Yuan, M. L. Chen, M. Pelizaeus, G. F. Cao, M. Bertani, F. Weidner, Y. Yuan, W. L. Yuan, Jimin Zhao, T. Holtmann, P. L. Li, Q. Ouyang, S. S. Fang, C. Y. Guan, F. Nerling, J. Y. Liu, X.R. Chen, Y. B. Liu, J.L. Zhang, Huanhuan Liu, Z. G. Zhao, L. Z. Liao, L. Yang, L.L. Wang, F.E. Maas, Dong E. Liu, H. B. Jiang, X. H. Li, Jiawei Zhang, L. Wollenberg, Shuai Liu, Xingchao Dai, J. J. Xu, Guangyi Zhang, W. Gradl, H. H. Zhang, Y. X. Song, D. Y. Wang, Fang Liu, J. L. Li, M. Y. Dong, M. Lellmann, S. Maldaner, A. Calcaterra, H. B. Li, A. G. Denig, Z.P. Mao, Q. Zhou, Junfeng Sun, F.C. Ma, S. S. Sun, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, Tao Zhang, Ruiting Ma, Z. Qian, P.R. Li, T. Z. Han, Xu Shan, X. S. Qin, B. Wang, R. Kappert, X. L. Gao, R. E. Mitchell, C. Dong, J.Y. Zhang, S. Sosio, Joachim Pettersson, Anita, S. Gu, Shan Jin, S. Zhang, Q.P. Ji, B.X. Zhang, M. G. Zhao, Y. H. Yang, X. X. Ma, J. Zhu, L. Y. Dong, P. Larin, B.S. Zou, X. N. Ma, K. Peters, M. Kavatsyuk, H. C. Shi, Q. Zhao, F. Feldbauer, Feng Liu, N. Yu. Muchnoi, C.D. Fu, X. H. Mo, M. H. Ye, H. Cai, L. Q. Huang, Jacek Biernat, Lei Zhang, M. Shao, S.P. Wen, C. Zhong, Jianyu Zhang, C. F. Redmer, X. Y. Jiang, J. D. Lu, C. Schnier, M. M. Ma, D. Bettoni, X. T. Huang, G. Rong, J.F. Qiu, X. A. Xiong, Y. Zhang, J. V. Bennett, H. Xiao, Ziyuan Li, A. A. Zafar, W. Shan, Z. Jiao, Y. B. Zhao, K. H. Rashid, J. Dong, Y.D. Wang, C.H. Li, A. Guskov, S. Nisar, C. J. Tang, S. J. Chen, Y. P. Lu, D. Dedovich, Y. Ding, S. Han, Z.Y. Deng, Y. P. Guo, R. S. Shi, Z.Y. Wang, Zujian Wang, Y. Bai, S. Nakhoul, Y. J. Xiao, Y.Q. Wang, S. Janchiv, Q. A. Malik, Nuclear Energy, Research unit Nuclear & Hadron Physics, and Energy and Sustainability Research Institute Groni

Subjects
Nuclear and High Energy Physics, electric [form factor], Electron–positron annihilation, FOS: Physical sciences, Sigma hyperon, annihilation [electron positron], BESIII, Cross section, Electromagnetic form factor, Σ hyperon, hyperon, 01 natural sciences, High Energy Physics - Experiment, NO, Subatomär fysik, High Energy Physics - Experiment (hep-ex), Angular distribution, Astronomi, astrofysik och kosmologi, 0103 physical sciences, Subatomic Physics, Astronomy, Astrophysics and Cosmology, ddc:530, angular distribution, structure, 010306 general physics, Physics, 2.3864-3.0200 GeV-cms, BES, +Sigma%2B+Sigma%22">electron positron --> Sigma+ Sigma, 010308 nuclear & particles physics, Hyperon, Beijing Stor, lcsh:QC1-999, Sigma Hyperon, Baryon, magnetic [form factor], ratio [form factor], valence [quark], colliding beams [electron positron], High Energy Physics::Experiment, pair production [Sigma+], Atomic physics, form factor [Sigma-], electromagnetic [form factor], lcsh:Physics, form factor [Sigma+], experimental results
Abstract

Physics letters / B 814, 136110 (2021). doi:10.1016/j.physletb.2021.136110, Published by North-Holland Publ., Amsterdam

Published
2021

10. Measurement of cross sections for e+e−→μ+μ− at center-of-mass energies from 3.80 to 4.60 GeV

Author

Z. A. Liu, V. Prasad, Ma R. T., Y. Ban, P. Weidenkaff, Y. H. Zheng, Cong-Feng Qiao, G. Felici, S. P. Wen, X. S. Qin, X. R. Zhou, N. Yu. Muchnoi, Xu G. F., X. S. Kang, Y. H. Zhang, S. L. Olsen, Ma X. X., Mo X. H., Z. Y. Wang, Teresa Lenz, Meng Wang, L. Wollenberg, L. Y. Dong, A. G. Denig, Muhammad Irshad, Y. K. Sun, F. Feldbauer, Z. L. Huang, Xingchao Dai, M. Ablikim, A. Calcaterra, Z. G. Zhao, X. Y. Jiang, L. Z. Liao, Yu B. X., S. Spataro, Li H. B., Yu Bai, H. H. Zhang, F. A. Harris, W. L. Chang, M. Lellmann, Lingxuan Zhang, Y. X. Tan, H. Leithoff, Li J. Q., X. P. Qin, S. Maldaner, J. Q. Zhang, S. Qian, Q. An, Jialun Ping, Liangbin Li, X. Y. Zhang, X. L. Wang, J. B. Liu, C. L. Luo, Y. J. Sun, F. Li, G. Y. Tang, X. H. Xie, H. M. Liu, Q. Zhou, G. F. Cao, B. Zhong, L. B. Guo, Jie Zhao, A. N. Zhu, Tao Zhang, Ma F. C., Alexey Zhemchugov, F. F. Sui, C.-H. Rosner, E. M. Gersabeck, F. H. Liu, S. Ahmed, Y. X. Yang, T. Z. Han, Li P. R., G. Wilkinson, Y. Fu, Xu Q. J., J. W. Zhang, Xu Shan, H. H. Liu, Wu L. H., R. Kiuchi, Yao Wang, Ke B. C., X. L. Luo, Y. C. Zhu, W. S. Cheng, T. Liu, J. F. Qiu, Y. F. Wang, Wu L. J., M. Kuemmel, Matthew Glenn Kurth, H. Xiao, A. Q. Guo, C. W. Wang, M. Papenbrock, T. Held, Y. Schelhaas, Fu C. D., L. Fava, Zhi Yang, Z. Ning, S. Y. Xiao, Ma Y. M., Y. X. Zhao, M. X. Luo, Dylan Jaide White, H. B. Liu, B. Zheng, R. G. Ping, K. Begzsuren, G. Li, B. Kopf, M. H. Ye, F. Nerling, T. Hussain, R. S. Shi, W. P. Wang, D. V. Dedovich, Li Z. B., H. R. Qi, Q. Q. Song, F. Bianchi, Y. P. Guo, L. L. Wang, H. Cai, X. Q. Hao, Y. H. Xie, W. X. Gong, F. E. Maas, B. Wang, S. Nakhoul, T. Hu, C. Q. Feng, X. R. Chen, M. Maggiora, S. W. Han, S. Jaeger, Q. Zhao, X. F. Cui, Y. Z. Sun, Serkant Ali Cetin, Y. Ding, L. Q. Huang, Z. Y. Deng, Hai-Tian Wang, M. Fritsch, J. M. Zhang, Gu M. H., M. Kavatsyuk, Zujian Wang, Jacek Biernat, P. Larin, A. Pathak, H. C. Shi, Gu L. M., B. J. Liu, Ma X. N., Z. L. Hou, O. Bakina, T. Y. Xing, D. Y. Chen, Jimin Zhao, Z. H. Qin, X D Shi, I. K. Keshk, C. X. Lin, Ye M. H., D. Y. Liu, L. Y. Liu, W. Imoehl, X. K. Zhou, C. F. Redmer, J. B. Jiao, X. H. Liu, L. Q. Qin, B. X. Zhang, Xujin Yuan, C. H. Li, Ma Q. M., W. Kühn, I. B. Nikolaev, M. Rump, Gang Zhao, Z. Y. You, Z. A. Zhu, R. Kliemt, J. H. Yin, P. X. Shen, Lu H. J., M. Shao, Z. Wu, C. X. Yue, Gu Y. T., Y. J. Mao, H. X. Yang, I. Garzia, J. P. Dai, G. S. Huang, A. Mangoni, M. Qi, Ji Q. P., A. Guskov, S. B. Liu, H. J. Yang, Y. Nefedov, Qi T. Y., M. Himmelreich, Wu J. F., Y. F. Long, T. Holtmann, K. Ravindran, J. Y. Liu, W. J. Zhu, X. D. Shi, Dan Wang, S. Gu, C. Z. Yuan, N. Cao, F. Weidner, T. Yu, Xu J. J., Lu X. L., Ji X. L., Du S. X., C. P. Shen, X. Wu, T. J. Min, K. J. Zhu, G. Cibinetto, G. X. Sun, J. V. Bennett, Li Yan, J. G. Messchendorp, W. L. Yuan, Q. Ouyang, Z. Jiao, Wenbin Qian, S. L. Yang, A. Sarantsev, D. H. Wei, J. S. Lange, S. S. Fang, C. Y. Guan, K. Y. Liu, Li H. J., Ma X. Y., Y. G. Gao, W. Ikegami Andersson, P. W. Luo, Ma R. Q., Y. N. Gao, Qi H. R., Y. B. Zhao, Y. Zhang, Y. B. Liu, M. Bertani, L. Yang, W. Shan, J. B. Zhao, P. Kiese, Yuan Hou, J. Dong, Mo Y. J., Zhiqing Zhang, Q. P. Ji, M. Kuessner, I. R. Boyko, Li Z. Y., H. B. Jiang, S. Nisar, Ji X. B., R. A. Briere, C. J. Tang, Y. Hu, Y. P. Lu, Li X. L., X. S. Jiang, S. H. Zhang, X. Y. Shen, W. Gradl, Tao Sun, V. Rodin, G. A. Chelkov, Y. X. Song, Xu X. P., P. Patteri, Lu J. G., R. Farinelli, R. X. Yang, Wei Xu, J. F. Sun, A. Pitka, P. Adlarson, S. Marcello, Y. Zeng, M. Pelizaeus, Zhe Sun, S. Lusso, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, L. Lavezzi, H. Y. Zhang, R. B. de Boer, Li L. K., G. F. Chen, J. Y. Zhang, H. W. Wen, Li J. L., Y. K. Heng, T. T. Han, S. J. Zhao, Li P. L., A. Bortone, Xuanhong Lou, Viktor Thorén, Nasser Kalantar-Nayestanaki, Yue Pan, I. Balossino, Hu H. M., Qu S. Q., Yu C. X., Li D. M., M. G. Zhao, Y. H. Yang, R. P. Guo, J. Zhu, M. Savrie, Yi Jin, Y. J. Xiao, Ma M. M., S. Janchiv, C. Zhong, C. Schnier, Y. Q. Wang, Li X. H., X. T. Huang, Ma H. L., G. Rong, Yu J. S., Z. X. Meng, X. A. Xiong, A. A. Zafar, K. H. Rashid, Y. T. Liang, S. J. Chen, K. J. Li, Andrzej Kupsc, M. L. Chen, Magnus Wolke, Y. F. Liang, Fang Liu, Li W. G., U. Wiedner, I. Denysenko, I. Uman, Guangyi Zhang, Z. J. Xiao, W. B. Yan, S. Pacetti, N. Huesken, M. Y. Dong, J. H. Zou, S. S. Sun, R. E. Mitchell, Q. Liu, Tristan Weber, L. Gong, L. G. Xia, A. Amoroso, A. Dbeyssi, Angelo Rivetti, F. De Mori, He K. L., L. D. Liu, Hu J. F., X. F. Wang, C. X. Liu, R. Kappert, S. Jin, Anita, Y. Yuan, K. Goetzen, Li S. Y., M. Albrecht, B. T. Tsednee, Ke Wang, W. Y. Sun, F. H. Heinsius, Lu J. D., B. L. Wang, Ma L. L., H. Liang, L. Koch, A. Khoukaz, R. Baldini Ferroli, Li W. D., Krisztian Peters, S. Malde, M. Z. Wang, Lu Y. P., Haiping Peng, Tao Luo, J. Libby, Shulei Zhang, H. S. Chen, Alperen Yuncu, H. L. Dai, Li C. H., Yaquan Fang, M. Greco, Shou-hua Zhu, John Jake Lane, Guoqiang Yu, K. Schoenning, B. S. Zou, Q. A. Malik, G. Mezzadri, W. C. Yan, Zhiqiang Liu, M. N. Achasov, L. Zhao, L. P. Zhou, Xiao-Rui Lyu, Z. P. Mao, J. Fang, J. Bloms, Z. Y. Zhang, Y. G. Xie, X. L. Gao, C. Dong, S. Sosio, Y. Yang, Joachim Pettersson, J. Tang, Yunlong Zhang, D. Bettoni, J. L. Zhang, Jianping Zheng, M. Destefanis, M. Rolo, and F. Cossio

Subjects
Nuclear physics, Physics, 010308 nuclear & particles physics, law, 0103 physical sciences, Detector, Measure (physics), Center of mass, 010306 general physics, Collider, 01 natural sciences, law.invention
Abstract

The observed cross sections for e(+)e(-) -> mu(+) mu(-) at energies from 3.8 to 4.6 GeVare measured using data samples taken with the BESIII detector operated at the BEPCII collider. We measure ...

Published
2020

11. Observation of e+e−→γX(3802) at BESIII

Author

F. Li, F. C. Ma, Fang Liu, P. Larin, M. H. Ye, X. L. Ji, Jie Yu, S. P. Yu, C. Dong, L. Y. Dong, J. F. Qiu, C. S. Ji, Q. Ouyang, Yang Qin, L. Fava, Y. X. Xia, X. K. Zhou, T. J. Min, K. J. Zhu, H. Liang, Q. P. Ji, C. B. Zhang, D. X. Lin, Alexey Zhemchugov, H. M. Hu, Q. Liu, J. W. Zhang, S. S. Fang, L. H. Wu, Zhiqing Liu, W. M. Ding, J. M. Bian, T. Johansson, J. F. Chang, H. L. Lu, S. J. Zhao, W. Lai, Y. G. Xie, Y. B. Liu, Q. Gao, Y. N. Gao, P. Wang, Y. Zhang, Y. Ding, Li Zhou, I. Denysenko, G. X. Sun, Li Yan, J. Z. Fan, J. Q. Zhang, Y. L. Han, Xinglong Li, Q. J. Xu, M. Bertani, S. X. Du, L. G. Xia, Z. A. Liu, S. Schumann, Yao Wang, B. Y. Zhang, Y. H. Zheng, A. A. Zafar, G. Li, Y. F. Wang, X. L. Luo, B. J. Liu, J. C. Chen, Xuanhong Lou, Nasser Kalantar-Nayestanaki, Y. H. Guan, Y. X. Yang, K. H. Rashid, X. Cai, X. R. Li, R. Poling, X. H. Mo, L. S. Wang, L. L. Wang, H. Cai, C. D. Fu, Cong-Feng Qiao, O. Albayrak, Y. Ban, P. Weidenkaff, H. W. Yu, C. Q. Feng, H. J. Lu, J. G. Lu, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. B. Zhao, W. Shan, J. Dong, C. Morales Morales, J. F. Sun, G. R. Lu, G. A. Chelkov, Kai Liu, M. Y. Dong, Y. T. Liang, S. J. Chen, O. Bondarenko, W. P. Wang, N. Yu. Muchnoi, X. S. Kang, Heng-Yun Ye, Y. H. Zhang, H. B. Liu, Haiping Peng, J. H. Liu, X. R. Chen, Yaquan Fang, T. Hussain, Z. A. Zhu, Z. G. Wang, H. Y. Zhang, G. F. Chen, M. R. Shepherd, M. Werner, W. Gradl, M. Ripka, Z. Y. Deng, Q. Zhao, K. Schoenning, Xingguo Li, B. S. Zou, Y. Zeng, Zhe Sun, Y. Z. Sun, X. Liu, Z. Y. Wang, Y. Q. Wang, S. P. Wen, X. S. Qin, X. R. Zhou, J. L. Fu, Cheng Li, J. H. Zou, O. Fuks, M. Lv, Z. Xue, Ke Wang, D. Y. Wang, I. B. Nikolaev, M. Maggiora, X. Y. Zhou, J. Y. Zhang, J. Min, S. S. Sun, S. Nisar, C. J. Tang, X. Y. Ma, H. Moeini, W. X. Gong, Q. A. Malik, W. C. Yan, S. B. Liu, C. P. Shen, Y. Nefedov, Y. P. Lu, Zhiqiang Liu, Miao He, M. Shao, Y. T. Gu, S. Braun, Ling Zhao, X. K. Chu, Lei Zhao, J. J. Zhang, M. Destefanis, Z. Y. He, Z. L. Hou, B. Kopf, J. Z. Bai, Q. J. Li, Z. H. Wang, B. Spruck, E. H. Thorndike, L. Q. Qin, L. P. Zhou, Fenfen An, Y. K. Heng, Yang Yang, F. E. Maas, Gang Zhao, Y. J. Mo, K. L. He, C. Hu, X. F. Wang, C. F. Redmer, Xiaocong Ai, T. C. Zhao, L. L. Jiang, Z. P. Mao, D. Li, R. E. Mitchell, X. Tang, B. Wang, M. Z. Wang, Q. M. Ma, S. L. Zang, Xiao-Tong Lu, A. Zallo, J. P. Dai, Jinxing Zheng, T. Hu, H. P. Cheng, J. Fang, Tao Li, C. H. Li, Y. B. Chen, D. Xiao, Xiaofeng Zhu, J. Z. Zhang, X. C. Chen, Y. P. Chu, X. L. Kang, A. Sarantsev, B. Kloss, X. Y. Niu, T. Guo, X. B. Ji, M. Qi, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, W. B. Yan, G. S. Huang, H. L. Ma, X. T. Huang, Y. Yuan, C. Z. Yuan, Y. S. Zhu, Serkant Ali Cetin, D. M. Li, G. Rong, M. G. Zhao, M. N. Achasov, C. Geng, Qun-Yao Wang, S. Pacetti, Q. L. Xiu, Z. Ning, Zhiyong Zhang, M. Pelizaeus, Xuantong Zhang, M. Kavatsyuk, Guangming Huang, Liqing Xu, S. H. Zhang, X. Y. Shen, X. Q. Li, K. Moriya, J. B. Jiao, Z. Wu, Y. P. Guo, Xichao Ruan, Ke Li, M. Greco, R. Baldini Ferroli, N. Wu, Krisztian Peters, Zhiqing Zhang, Z. P. Zhang, M. H. Gu, B. X. Zhang, H. Y. Sheng, C. X. Yu, B. Zheng, R. G. Ping, Zujian Wang, Feng Liu, M. Ablikim, K. Y. Liu, Z. B. Li, X. H. Zhao, S. Qian, Q. An, Jialun Ping, S. L. Olsen, R. A. Briere, X. Y. Zhang, Chi Zhang, X. S. Jiang, M. Lara, Y. J. Sun, X. Zhou, I. Tapan, Y. H. Yan, J. W. Zhao, D. Cronin-Hennessy, Y. C. Zhu, E. Boger, T. Held, D. J. Ambrose, O. Cakir, E. Prencipe, W. D. Li, Cui Li, Shan Wang, G. S. Varner, Magnus Wolke, Y. F. Liang, D. P. Jin, A. Calcaterra, Z. G. Zhao, Dayong Wang, P. L. Liu, Y. J. Mao, H. X. Yang, L. Huang, H. H. Zhang, Andrzej Kupsc, Z. J. Sun, H. Loehner, W. L. Yuan, M. L. Chen, I. Uman, Huihui Liu, J. P. Liu, H. B. Li, A. G. Denig, C. L. Luo, M. Ullrich, Z. J. Xiao, J. G. Messchendorp, C. C. Zhang, B. Zhong, L. B. Guo, H. Muramatsu, Ulrich Wiedner, M. Kornicer, Qiunan Xu, T. Ma, J. C. Li, A. Q. Guo, J. Zhuang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, W. M. Song, M. Leyhe, Z. H. Qin, Chuan Liu, W. G. Li, S. Spataro, X. P. Xu, Lei Li, H. M. Liu, J. F. Hu, G. F. Cao, S. Ma, D. Toth, Tao Luo, J. V. Bennett, B. X. Yu, H. S. Chen, J. S. Huang, C. X. Liu, H. L. Dai, Igor Boyko, G. F. Xu, S. Jin, X. Y. Song, P. L. Wang, K. Goetzen, W. Kuehn, and F. A. Harris

Published
2020

12. Observation of a Charged Charmoniumlike Structure Zc(4020) and Search for the Zc(3900) in e+e−→π+π−hc

Author

H. B. Li, H. J. Lu, J. G. Lu, A. G. Denig, C. L. Luo, M. Werner, Y. Ding, C. C. Zhang, A. Q. Guo, B. Zhong, L. B. Guo, X. Liu, B. J. Liu, W. M. Song, Lei Li, M. Maggiora, Ling Zhao, P. L. Wang, X. L. Luo, F. E. Maas, T. Hu, Ulrich Wiedner, G. R. Lu, K. Goetzen, W. Kuehn, Y. P. Guo, Z. G. Wang, Lei Zhao, Z. Y. He, Z. L. Hou, M. Kornicer, T. Ma, M. Leyhe, Z. H. Qin, Yang Yang, Chuan Liu, T. Guo, Serkant Ali Cetin, H. Y. Zhang, Kai Liu, W. G. Li, Z. A. Zhu, S. Spataro, X. P. Xu, S. Schumann, G. F. Chen, H. M. Liu, X. L. Ji, S. P. Yu, J. F. Hu, G. F. Cao, Yao Wang, Y. H. Guan, Z. H. Wang, S. L. Olsen, J. Y. Zhang, Guangming Huang, S. B. Liu, Xichao Ruan, B. Spruck, R. A. Briere, E. H. Thorndike, Y. J. Mao, H. X. Yang, Yang Qin, Y. Nefedov, Huihui Liu, J. P. Liu, C. P. Shen, Z. Wu, G. Li, J. G. Messchendorp, A. Calcaterra, Z. G. Zhao, L. Q. Qin, M. H. Gu, X. S. Jiang, Qiunan Xu, C. F. Redmer, X. H. Mo, L. S. Wang, H. Y. Sheng, P. Friedel, D. Li, M. H. Ye, C. Z. Yuan, C. D. Fu, L. Huang, H. H. Zhang, C. Q. Feng, Y. X. Xia, J. P. Dai, S. Ma, S. Qian, Q. An, Jialun Ping, Y. K. Heng, X. R. Chen, Z. J. Sun, H. Loehner, C. X. Yu, O. Cakir, D. Toth, Y. G. Xie, Y. N. Gao, S. X. Du, Y. Zhang, Z. Y. Deng, X. Y. Zhang, A. Zallo, X. T. Huang, M. Lara, X. K. Zhou, G. Rong, Wei Wu, L. L. Wang, H. Cai, Tao Luo, Y. J. Sun, J. V. Bennett, B. Wang, J. C. Li, J. Zhuang, G. R. Liao, M. Kavatsyuk, Y. X. Yang, B. Zheng, R. G. Ping, Sanfeng Wu, Xingguo Li, X. Q. Li, Shan Wang, M. G. Zhao, M. Greco, M. X. Luo, Jian Wei, Yucheng Huang, J. S. Huang, F. A. Harris, C. Geng, D. V. Dedovich, Q. Liu, Z. A. Liu, B. X. Yu, L. H. Wu, J. B. Jiao, G. S. Huang, Y. F. Liang, C. X. Liu, D. P. Jin, J. Z. Bai, M. R. Shepherd, B. X. Zhang, F. F. Jing, Y. Z. Yang, Q. Zhao, Y. Z. Sun, L. Y. Dong, S. L. Zang, Y. Ban, P. Weidenkaff, G. S. Varner, Zhenli Xu, B. S. Zou, J. M. Bian, S. J. Zhao, Y. H. Zheng, Dayong Wang, W. Lai, Q. Ouyang, P. L. Liu, Y. P. Chu, K. Y. Liu, Z. B. Li, S. P. Wen, J. Q. Zhang, Feng Liu, G. F. Xu, Cong-Feng Qiao, O. Albayrak, S. S. Fang, Gang Zhao, L. G. Xia, X. B. Ji, N. Yu. Muchnoi, H. S. Chen, Q. P. Ji, W. M. Ding, C. S. Ji, A. A. Zafar, C. Hu, X. S. Qin, X. R. Zhou, J. L. Fu, S. Jin, X. L. Wang, Cheng Li, X. Tang, H. L. Dai, Igor Boyko, M. Ablikim, F. Li, Q. J. Xu, F. C. Ma, H. Liang, Xiao-Tong Lu, Y. B. Liu, Heng-Yun Ye, Y. H. Zhang, I. B. Nikolaev, Y. F. Wang, G. A. Chelkov, K. H. Rashid, M. Shao, Y. T. Gu, J. C. Chen, C. B. Zhang, Xuanhong Lou, D. X. Lin, Nasser Kalantar-Nayestanaki, Q. G. Wen, W. L. Yuan, H. L. Ma, Alexey Zhemchugov, H. M. Hu, D. M. Li, Q. J. Li, H. W. Yu, Y. T. Liang, Jie Yu, M. L. Chen, X. K. Chu, X. Y. Song, S. H. Zhang, X. Y. Shen, Ke Wang, H. Muramatsu, T. Hussain, C. Morales Morales, X. Y. Ma, H. Moeini, W. X. Gong, Z. Y. Wang, S. J. Chen, O. Bondarenko, M. Pelizaeus, A. Sarantsev, D. H. Wei, P. R. Li, V. V. Bytev, T. J. Min, K. J. Zhu, J. S. Lange, Fenfen An, I. Uman, Xuantong Zhang, T. C. Zhao, K. Moriya, J. W. Zhang, Zhenghao Zhang, Q. A. Malik, Qun-Yao Wang, W. C. Yan, Q. L. Xiu, Zhiyong Zhang, LiLi Zhang, Zhiqiang Liu, Miao He, C. H. Li, Y. L. Han, R. Baldini Ferroli, S. Braun, R. Poling, J. F. Qiu, Jianping Zheng, L. Fava, L. P. Zhou, X. N. Li, M. Lv, Haiping Peng, Z. Xue, Z. P. Mao, M. Destefanis, P. Larin, H. P. Cheng, J. Fang, N. Wu, Krisztian Peters, X. F. Wang, Q. M. Ma, K. Li, Fang Liu, B. Kloss, I. Denysenko, Y. Yuan, B. Y. Zhang, Y. S. Zhu, W. B. Yan, M. N. Achasov, S. Pacetti, M. Y. Dong, H. B. Liu, J. H. Zou, O. Fuks, S. S. Sun, Jürgen Becker, R. E. Mitchell, L. L. Jiang, Zhiqing Liu, Y. B. Zhao, J. F. Chang, W. Shan, Y. Q. Wang, S. Nisar, X. Cai, X. R. Li, C. J. Tang, Y. P. Lu, Z. Ning, M. Bertani, Z. P. Zhang, J. W. Park, Zujian Wang, W. Gradl, M. Ripka, X. H. Zhao, Chi Zhang, D. Y. Wang, M. Qi, G. X. Sun, Li Yan, Z. Jiao, Fu-Hu Liu, D. H. Zhang, J. Min, B. Kopf, N. Li, K. L. He, M. Z. Wang, J. F. Sun, Y. Zeng, Zhe Sun, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, X. Zhou, I. Tapan, Y. H. Yan, J. W. Zhao, D. Cronin-Hennessy, Y. C. Zhu, E. Boger, T. Held, D. J. Ambrose, E. Prencipe, W. D. Li, Cui Li, M. Ullrich, and Z. J. Xiao

Subjects
Physics, Structure (category theory), Atomic physics, Zc(3900)
Published
2020

13. First measurements of χcJ→Σ−Σ¯+(J=0,1,2) decays

Author

X. Wu, J. Tang, Bibo Ke, G. Wilkinson, Y. J. Mo, W. S. Cheng, Yao Zhang, G. Li, W. B. Yan, M. M. Ma, L. H. Wu, S. Pacetti, C. D. Fu, M. Savrie, Yunlong Zhang, C. Q. Feng, Zongyuan Wang, X. R. Chen, N. Huesken, Q. Liu, D. Bettoni, Tristan Weber, Yi Jin, Z. Y. Deng, Y. H. Tan, X D Shi, G. X. Sun, J. V. Bennett, Li Yan, J. L. Zhang, F. Li, F. C. Ma, Y. J. Xiao, Hai-Tian Wang, F. Weidner, Ke Li, Jianping Zheng, L. L. Ma, L. Gong, W. L. Yuan, Q. Ouyang, Xingguo Li, Xiao-Rui Lyu, S. Janchiv, J. Q. Li, Q. P. Ji, M. Kuessner, J. Bloms, Y. J. Mao, P. Kiese, Yuan Hou, I. R. Boyko, Z. Jiao, Z. A. Liu, S. S. Fang, C. Y. Guan, H. X. Yang, L. G. Xia, A. Amoroso, R. A. Briere, X. L. Ji, Y. B. Liu, V. Prasad, M. H. Ye, S. H. Zhang, X. Y. Shen, S. X. Du, Z. X. Meng, K. Y. Liu, X. A. Xiong, Y. Ban, Z. Y. Zhang, G. S. Huang, E. M. Gersabeck, I. Garzia, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, X. S. Jiang, A. Dbeyssi, P. Weidenkaff, M. Y. Dong, Y. G. Xie, A. A. Zafar, X. L. Luo, M. Destefanis, T. Liu, J. F. Qiu, Tao Sun, Angelo Rivetti, S. P. Wen, Y. B. Zhao, W. Shan, Y. Ding, X. S. Qin, X. R. Zhou, R. X. Yang, J. H. Zou, J. Dong, S. Qian, G. A. Chelkov, P. W. Luo, L. Fava, K. Begzsuren, Q. An, Jialun Ping, S. S. Sun, Huihui Liu, Zhi Yang, K. H. Rashid, W. P. Wang, Cheng Li, Magnus Wolke, Y. H. Xie, F. Bianchi, Zhang Li, H. B. Li, S. L. Yang, X. Y. Zhang, Y. F. Liang, Wei Xu, B. J. Liu, A. Pitka, K. Goetzen, T. Y. Xing, D. Y. Chen, T. T. Han, P. Adlarson, S. J. Zhao, X. L. Wang, S. Nisar, C. J. Tang, F. De Mori, M. Maggiora, Ling Zhao, C. L. Luo, Y. T. Liang, Y. Hu, J. B. Liu, Xujin Yuan, Z. Ning, J. G. Messchendorp, S. J. Chen, J. L. Li, M. Albrecht, Y. J. Sun, Yifan Yang, Y. P. Lu, S. Y. Xiao, W. Imoehl, Q. J. Xu, M. Rolo, Lei Zhao, B. Q. Wang, Z. L. Hou, V. Rodin, L. Y. Dong, J. Q. Zhang, D. Y. Liu, F. Nerling, X. H. Liu, L. Q. Qin, A. Bortone, S. B. Liu, Y. Nefedov, Q. Zhou, W. D. Li, B. T. Tsednee, W. Kühn, Z. Y. You, R. Farinelli, F. F. Sui, M. H. Gu, J. P. Dai, B. Zhong, L. B. Guo, Xuanhong Lou, Viktor Thorén, R. E. Mitchell, Nasser Kalantar-Nayestanaki, I. Balossino, Yue Pan, Fang Liu, U. Wiedner, I. Denysenko, I. Uman, A. Q. Guo, C. W. Wang, H. L. Ma, D. M. Li, R. Kiuchi, S. Y. Li, C. Zhong, J. B. Jiao, Lei Li, Z. A. Zhu, H. Y. Zhang, W. M. Song, X. P. Xu, X. B. Ji, P. Patteri, Y. Fu, X. F. Wang, X. N. Ma, C. X. Yu, R. B. de Boer, M. Kuemmel, Matthew Glenn Kurth, M. Bertani, Y. F. Long, F. Cossio, Ruiting Ma, K. J. Zhu, K. Ravindran, Z. Qian, G. F. Chen, A. N. Zhu, Huanhuan Liu, Z. J. Xiao, H. J. Lu, J. G. Lu, L. Yang, R. S. Shi, Tao Zhang, Shuai Liu, G. Felici, C. P. Shen, C. Z. Yuan, Jianyu Zhang, N. Cao, H. Muramatsu, J. W. Zhao, Q. M. Ma, X. F. Cui, L. D. Liu, J. Y. Zhang, R. Kliemt, X. K. Zhou, Guangyi Zhang, B. Zheng, R. G. Ping, F. E. Maas, Zujian Wang, T. Z. Han, A. Mangoni, J. J. Xu, Y. C. Zhu, X. L. Gao, M. Fritsch, Xu Shan, M. Kavatsyuk, J. D. Lu, Y. K. Heng, T. Hu, C. Schnier, Y. Q. Wang, Z. H. Qin, A. Guskov, M. Pelizaeus, Jie Yu, Y. Schelhaas, H. Xiao, T. Held, Jinfei Wu, Xiangcheng Pan, H. C. Shi, H. J. Li, O. Bakina, Y. H. Zheng, I. B. Nikolaev, Andrzej Kupsc, C. X. Liu, Yi Zhang, X. H. Li, J. H. Yin, L. Wollenberg, Zhenxiong Yuan, A. Calcaterra, Z. G. Zhao, Lei Zhang, H. R. Qi, Q. Q. Song, Y. Yuan, Cong-Feng Qiao, M. L. Chen, L. Z. Liao, W. J. Zhu, W. G. Li, A. G. Denig, T. Holtmann, X. D. Shi, Y. K. Sun, Y. P. Guo, Meng Wang, Muhammad Irshad, Dan Wang, B. X. Zhang, Xingchao Dai, X. T. Huang, M. Shao, Y. T. Gu, S. Gu, C. X. Yue, N. Yu. Muchnoi, C. Dong, S. Sosio, X. S. Kang, P. X. Shen, Z. Wu, G. Rong, Serkant Ali Cetin, T. J. Min, Yu Bai, H. H. Zhang, S. Spataro, Y. H. Zhang, J. F. Sun, J. Y. Liu, G. Cibinetto, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, S. L. Olsen, A. Sarantsev, R. Kappert, D. H. Wei, P. R. Li, J. S. Lange, Xu Yan, R. T. Ma, S. Marcello, Y. Zeng, Z. Y. Wang, Zhiqing Zhang, H. M. Liu, Zhe Sun, Yao Wang, Teresa Lenz, M. Lellmann, S. Maldaner, Lingxuan Zhang, Y. X. Tan, G. F. Xu, S. Lusso, J. F. Hu, S. Jin, Anita, F. A. Harris, H. B. Jiang, W. L. Chang, Jiawei Zhang, X. H. Mo, G. F. Cao, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, X. P. Qin, Y. F. Wang, L. L. Wang, H. Cai, L. Q. Huang, Joachim Pettersson, M. X. Luo, Dylan Jaide White, J. J. Song, L. Sun, F. Feldbauer, Jacek Biernat, D. V. Dedovich, H. Leithoff, Z. L. Huang, Feng Liu, M. Ablikim, T. Hussain, X. Y. Jiang, Y. N. Gao, X. Y. Ma, W. X. Gong, A. Pathak, T. Johansson, J. F. Chang, C. H. Li, Y. Zhang, O. B. Kolcu, X. Cai, L. Lavezzi, Yan Zhang, S. Ahmed, Y. X. Yang, W. Gradl, Y. X. Song, Q. Zhao, Y. Z. Sun, I. K. Keshk, H. B. Liu, C. X. Lin, Alexander Leon Gilman, M. Rump, Gang Zhao, B. Kopf, K. L. He, Ziyi Wang, S. W. Han, M. Z. Wang, Jimin Zhao, P. L. Li, C. F. Redmer, M. Qi, H. J. Yang, X. L. Lu, D. C. Shan, L. Koch, A. Khoukaz, R. Baldini Ferroli, J. Libby, Yaquan Fang, M. Greco, Shou-hua Zhu, Krisztian Peters, John Jake Lane, Guoqiang Yu, S. Malde, K. Schoenning, B. S. Zou, H. Liang, Haiping Peng, Tao Luo, B. X. Yu, Shulei Zhang, H. S. Chen, Alperen Yuncu, H. L. Dai, Ke Wang, W. Y. Sun, Ke Liu, R. Poling, F. H. Heinsius, Q. A. Malik, G. Mezzadri, W. C. Yan, B. L. Wang, Zhiqiang Liu, L. M. Gu, M. N. Achasov, L. P. Zhou, Y. M. Ma, Z. P. Mao, Y. X. Zhao Zhao, J. Fang, Ch. Rosner, G. Y. Tang, X. H. Xie, Jie Zhao, Alexey Zhemchugov, H. M. Hu, F. H. Liu, Nicolas Berger, J. W. Zhang, T. Y. Qi, M. Himmelreich, W. H. Wang, T. Yu, Wenbin Qian, Y. G. Gao, X. Q. Hao, S. Nakhoul, S. Jaeger, P. Larin, and L. J. Wu

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Sigma, 010306 general physics, Branching (polymer chemistry), 01 natural sciences, Bar (unit)
Abstract

We measured the branching fractions of the decays χcJ→Σ-Σ¯+ for the first time using the final states nn¯π+π-. The data sample exploited here is 448.1×106 ψ(3686) events collected with BESIII. We find B(χcJ→Σ-Σ¯+)=(51.3±2.4±4.1)×10-5,(5.7±1.4±0.6)×10-5, and (4.4±1.7±0.5)×10-5, for J=0, 1, 2, respectively, where the first uncertainties are statistical and the second systematic.

Published
2020

14. Application of a whale optimized variational mode decomposition method based on envelope sample entropy in the fault diagnosis of rotating machinery

Author

T X Zhou, N Lu, R Q Li, M L Li, J F Wei, and W L Yuan

Subjects
Entropy (classical thermodynamics), biology, Whale, Computer science, Applied Mathematics, biology.animal, Statistical physics, Variational mode decomposition, Envelope sample, Fault (power engineering), Instrumentation, Engineering (miscellaneous)
Abstract

In recent years, the variational mode decomposition (VMD) method has been introduced for rotating machinery fault diagnosis. However, the results largely depend on its parameters. When an optimization algorithm is employed to optimize these parameters, the fitness function is critical. In this paper, a new fitness function, envelope sample entropy, is constructed. Based on this, a whale optimized VMD method is proposed for rotating machinery fault diagnosis. First, the vibration signals were decomposed by the optimized VMD method to obtain a series of intrinsic mode functions (IMFs), from which the IMFs containing the main information were selected. Then, features were extracted from the selected IMFs and their dimensions were reduced using the local tangent space alignment method. Finally, support vector machine was adopted for fault identification. Compared with related methods, the experiment results show that the proposed method obtains a higher fault recognition accuracy.

Published
2021

15. Measurement of the absolute branching fraction of Λc+→pKS0η decays

Author

B.X. Zhang, Jie Yu, X. L. Luo, S. L. Yang, Z.X. Meng, X. Sun, Yu Lu, K. J. Zhu, Y. Fu, X. L. Gao, L. Y. Dong, K. Begzsuren, T. Holtmann, P. W. Luo, S. Marcello, Y. Zeng, Q.P. Ji, M. Kuemmel, Matthew Glenn Kurth, X. H. Xie, M. Y. Dong, W. P. Wang, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, R. Baldini Ferroli, J. Y. Liu, L. Sun, X. Wang, L. J. Wu, X. Wu, X. F. Cui, L.Q. Qin, Xiongfei Wang, Y. H. Zheng, Cong-Feng Qiao, T. Held, X.R. Chen, F. Bianchi, M. G. Zhao, Y. H. Yang, Evelina Gersabeck, W. J. Zhu, X. X. Ma, X. D. Shi, L. K. Li, Y. F. Wang, H.B. Liu, V. Rodin, Y. J. Mo, A. Sarantsev, O. Bakina, K. Liu, P. Larin, Shan Jin, Q. Liu, X. B. Ji, C. Dong, T. T. Han, Y. Schelhaas, T. Hussain, S. Ahmed, C.D. Fu, X. H. Mo, K.Y. Liu, S. J. Zhao, M. H. Ye, J.Y. Zhang, S. Sosio, F. Yan, Y. H. Zhang, W.G. Li, M. Albrecht, Gang Chen, X. Y. Ma, A. Zhemchugov, D. Y. Liu, I. Uman, W. X. Gong, L. L. Ma, Y.X. Zhao, L. Gong, Libo Guo, H. Cai, X. Pan, B.S. Zou, W. D. Li, O.B. Kolcu, L. Q. Huang, L. Zhao, H. R. Qi, Q. Q. Song, Junfeng Sun, Y. B. Zhao, Jacek Biernat, Q. J. Xu, Y. Gao, I. Denysenko, A. Bortone, Xuanhong Lou, L. G. Xia, A. Amoroso, J.L. Zhang, J.L. Ping, Huanhuan Liu, H. S. Chen, Bingxuan Liu, G. Wilkinson, A. Pathak, Viktor Thorén, Yi Chen, Xujin Yuan, S. B. Liu, X. N. Ma, F.C. Ma, Xiao-Rui Lyu, S. S. Sun, W. S. Cheng, Xiang Zhou, Nasser Kalantar-Nayestanaki, Joachim Pettersson, I. K. Keshk, P.R. Li, A. Dbeyssi, Yao Zhang, F. F. Sui, F.E. Maas, M. H. Gu, R. Kiuchi, P. Patteri, L.H. Wu, C. X. Lin, S. Jaeger, H. N. Li, S.H. Zhu, C.X. Yue, Yue Pan, A. Gilman, Y. G. Gao, W. H. Wang, Meng Wang, Muhammad Irshad, J. Zhu, M. Rump, Lei Zhang, J. Dong, X. S. Qin, R. Farinelli, S. Zhang, Z.T. Sun, M. Shao, Dong E. Liu, J. Q. Li, A. Q. Guo, Guang Zhao, Y. X. Song, X. H. Li, H.X. Yang, B. Wang, Z. J. Chen, Y.X. Yang, K. Peters, W. Imoehl, L. Wollenberg, J. Tang, B. Zhong, Xingchao Dai, C. X. Yu, C. Q. Feng, Zongyuan Wang, M. Scodeggio, J. Bloms, M. Rolo, H. Y. Zhang, C.H. Li, A. Mangoni, F. De Mori, R. E. Mitchell, R. B. de Boer, Shiqun Li, Yunlong Zhang, Y.T. Gu, F. Weidner, Hai-Tian Wang, Y. Yuan, M. Kavatsyuk, W. L. Yuan, Q. Ouyang, F.H. Liu, Yirong Zhu, Zhenjun Xiao, X. L. Ji, X. H. Bai, Y.T. Liang, M.H. Ye, S. S. Fang, C. Y. Guan, F. Nerling, H. C. Shi, R. Kappert, B. Zheng, R. G. Ping, G. Li, T. Y. Qi, Z. Ning, Xingguo Li, Q.M. Ma, Y. B. Liu, F. A. Harris, W. L. Chang, Stephen Lars Olsen, J. B. Jiao, S.P. Wen, Q. Ji, R. Poling, L. M. Gu, C.L. Luo, P. Kiese, J.H. Yin, Bibo Ke, I.B. Nikolaev, Q. Zhao, W. B. Yan, S. Nisar, T. Lenz, D. M. Li, Jianping Zheng, X. Y. Shen, S. Y. Xiao, Z. Y. Yuan, H. Leithoff, M. Ablikim, F. Li, K. Zhu, T. Yu, D.H. Wei, X. K. Zhou, C. J. Tang, G. Felici, Y. G. Xie, B. Kopf, Yuan Hou, Y. K. Heng, S.A. Cetin, M.N. Achasov, M. Pelizaeus, Y. P. Lu, I. Balossino, Anita, S. X. Du, S. Pacetti, S. Gu, R. A. Briere, K. L. He, T. J. Min, J. G. Lu, D. Dedovich, J. F. Hu, Ziyi Wang, Y. X. Tan, Wenbin Qian, N. Huesken, T. Y. Xing, D. Y. Chen, Zhiyong Zhang, Y. H. Tan, G. S. Huang, M. Himmelreich, M. Destefanis, T. Hu, G. Y. Tang, F. Cossio, M. Z. Wang, M. Bertani, C.X. Liu, Jimin Zhao, P. L. Li, S. Qian, Q. An, Ke Li, X. S. Jiang, C. H. Heinz, Y. Fang, T. Liu, L. Koch, Z. A. Liu, Jie Zhao, Z.L. Hou, F. Feldbauer, L. Fava, Zhi Yang, V. Prasad, A. Yuncu, Z. Y. You, Feng Liu, H. M. Hu, X. Y. Zhang, X. L. Wang, Z. A. Zhu, W. C. Yan, J. B. Liu, Y. Ding, Y. Ban, N. Yu. Muchnoi, P. Weidenkaff, F. H. Heinsius, X. Y. Jiang, J. Zhao, G. Mezzadri, Y. J. Sun, Yifan Yang, J. W. Zhang, R. Aliberti, M. M. Ma, L. D. Liu, X. R. Zhou, L. Yang, P. X. Shen, J. L. Li, Z. Wu, Cheng Li, M. Kuessner, C. P. Shen, R. X. Yang, Wei Xu, H. B. Jiang, Jiawei Zhang, P. Adlarson, Zhiqing Zhang, Y. Zhang, J. V. Bennett, W. Gradl, Ruiting Ma, Y. P. Guo, Z. Qian, L.L. Wang, Shuai Liu, H.R. Qi, Z.P. Mao, H. Xiao, Ziyuan Li, W. Shan, A. Rivetti, Tao Sun, J.H. Zou, Z. Jiao, J. Q. Zhang, J. J. Xu, Guangyi Zhang, D. Y. Wang, M. Qi, H. J. Yang, Z.Y. Deng, Jens Soeren Lange, Y. F. Long, R. S. Shi, K. Ravindran, Y. H. Xie, Z.Y. Wang, Zujian Wang, Y.Z. Sun, X.S. Kang, M. Maggiora, Y. Bai, X.Q. Hao, S. Nakhoul, X. L. Lu, L. Yan, F.X. Lu, Magnus Wolke, Lei Zhao, D. C. Shan, Yi Zhang, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Y. F. Liang, K. Goetzen, C. Z. Yuan, N. Cao, R.P. Guo, S. Han, Jinfei Wu, H. J. Li, Y. J. Xiao, Y.Q. Wang, S. Janchiv, Zhiqing Liu, J.F. Qiu, X. A. Xiong, A. A. Zafar, T. Johansson, J. F. Chang, K. H. Rashid, Tao Luo, Y.D. Wang, R. Kliemt, X. Liu, Yong Huang, C. W. Wang, A. Guskov, B. X. Yu, G.F. Xu, S. J. Chen, G.X. Sun, Andrzej Kupsc, M. L. Chen, C. Zhong, W. M. Song, G. Chelkov, Jianyu Zhang, H. L. Dai, C. F. Redmer, J. D. Lu, C. Schnier, D. Bettoni, Y. Nefedov, A. Khoukaz, X. Cai, X. T. Huang, G. Rong, S. Malde, L. Lavezzi, Haiping Peng, Ke Wang, C. Li, Z. H. Qin, S. Lusso, H.L. Ma, B. L. Wang, Yan Zhang, Y. K. Sun, Z. Huang, S. Spataro, X. P. Xu, Lei Li, H. M. Liu, Y. Jin, Xu Yan, G. F. Cao, R. T. Ma, X D Shi, Y. J. Mao, I. Garzia, L. Zhang, Huihui Liu, J. G. Messchendorp, J. P. Dai, J. Libby, S. F. Zhang, W. Kühn, M. Greco, A. Pitka, G. Cibinetto, John Jake Lane, Guoqiang Yu, K. Schoenning, Niklaus Berger, W.Y. Sun, H. Liang, M. Fritsch, Ke Liu, Q. A. Malik, L. P. Zhou, Y. M. Ma, H. J. Lu, J. Fang, Ch. Rosner, A. Calcaterra, H. B. Li, A. G. Denig, Q. Zhou, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, Tao Zhang, T. Z. Han, Xu Shan, B.J. Liu, Z. G. Zhao, L. Z. Liao, H. H. Zhang, Fang Liu, M. Lellmann, S. Maldaner, M. X. Luo, Dylan Jaide White, Y. Hu, and I. Boyko

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, law, Branching fraction, 0103 physical sciences, 010306 general physics, Collider, 01 natural sciences, Symmetry (physics), law.invention
Abstract

Based on 586 p b − 1 of e + e − annihilation data collected at a center-of-mass energy of s = 4.6 GeV with the BESIII detector at the BEPCII collider, the absolute branching fraction of Λ c + → p K S 0 η decays is measured for the first time to be B ( Λ c + → p K S 0 η ) = ( 0.414 ± 0.084 ± 0.028 ) % , where the first uncertainty is statistical and the second is systematic. The result is compatible with a previous CLEO result on the relative branching fraction B ( Λ c + → p K S 0 η ) B ( Λ c + → p K − π + ) , and consistent with theoretical predictions of SU(3) flavor symmetry.

Published
2021

16. A Monte Carlo triple-GEM simulation tuned with data

Author

J. Pellegrino, M. Maggiora, I. Garzia, E. Soldani, F. De Mori, G. Mezzadri, D. Bettoni, R. Farinelli, G. Felici, M. Destefanis, E. Tskhadadze, J. Dong, G. Cotto, F. Evangelisti, Marco Mignone, S. Sosio, S. Spataro, H. J. Li, A. Calcaterra, Giuseppe Giraudo, S. Pacetti, R. Baldini Ferroli, A. Amoroso, M. Greco, Angelo Rivetti, L. Lavezzi, A. Mangoni, M. Melchiorri, V. Cassariti, Li Yan, F. Cossio, S. Marcello, L. Fava, W. L. Yuan, J. Y. Chai, I. Balossino, Cy. Leng, G. Cibinetto, A. Pelosi, M. Bertani, Gianfranco Morello, A. Bortone, W. S. Cheng, F. Bianchi, M. Capodiferro, M. Da Rocha Rolo, P. Patteri, S. Chiozzi, M.G. Alexeev, E. Fioravanti, S. Verma, Richard Wheadon, A. Cotta Ramusino, S. Cerioni, R. Malaguti, M. Gatta, N. Canale, and M. Savrie

Subjects
Physics, Field (physics), Physics::Instrumentation and Detectors, law, Ionization, Monte Carlo method, Detector, CPU time, STRIPS, Electron, Diffusion (business), law.invention, Computational physics
Abstract

Triple-GEM detectors are a well known technology used in high energy physics experiments. A reliable Monte Carlo simulation has to be developed to reproduce the performance which have been measured experimentally, for example in beam tests, and be able to infer the future behavior in real conditions. In detail, the software has to simulate the response of the detector to the passage of particles, from the primary ionization, to the amplification and diffusion of the electrons and eventually to the induction of the charge on the anode strips. In the case of gas detectors, existing softwares such as GARFIELD++ already perform a very detailed simulation of the physical processes but are CPU time consuming. In this presentation a description of a faster simulation is presented. It models the results about the electron production (primary ionization and avalanche) and diffusion in a triple-GEM obtained from GARFIELD++ and then it reconstructs the signal induced on each anode strip according to the Shockley-Ramo theorem. The simulation has been tuned on the data collected in several beam tests and it can reproduce the real values of time and charge measured by the strip. When the reconstruction algorithms used in the field of Micro Pattern Gas Detectors, such as the Charge Centroid or the micro-Time Projection Chamber readout, are applied on the simulated data, the model shows performance comparable to the experimental one. This provides a validation of this model and allows to extend its usage in different conditions, i.e. geometries, presence of magnetic field, high voltage settings, different direction of the incident particles, to evaluate the expected outcome of the triple-GEM in those cases.

Published
2018

17. Optimization of the reconstruction algorithm in triple-GEM detector

Author

M. Savrie, W. S. Cheng, J. Pellegrino, S. Marcello, M. Maggiora, R. Baldini Ferroli, J. Y. Chai, S. Chiozzi, F. De Mori, M. Greco, J. Dong, S. Sosio, V. Cassariti, E. Soldani, M.G. Alexeev, Marco Mignone, R. Farinelli, M. Capodiferro, A. Calcaterra, M. Bertani, P. Patteri, Li Yan, A. Amoroso, A. Bortone, A. Pelosi, F. Bianchi, Cy. Leng, L. Fava, G. Mezzadri, Angelo Rivetti, A. Mangoni, S. Cerioni, Giuseppe Giraudo, F. Cossio, R. Malaguti, M. Melchiorri, G. Felici, G. Cotto, F. Evangelisti, G. Cibinetto, D. Bettoni, E. Fioravanti, S. Verma, S. Pacetti, H. J. Li, N. Canale, M. Destefanis, W. L. Yuan, S. Spataro, Richard Wheadon, A. Cotta Ramusino, M. Gatta, L. Lavezzi, Gianfranco Morello, I. Garzia, E. Tskhadadze, M. Da Rocha Rolo, and I. Balossino

Subjects
Micro Pattern Gas Detectors, Physics::Instrumentation and Detectors, Electron, 01 natural sciences, Capacitance, NO, 030218 nuclear medicine & medical imaging, μTPC, 03 medical and health sciences, 0302 clinical medicine, Optics, 0103 physical sciences, Gas detector, Reconstruction algorithms, Image resolution, Physics, GEM, tracking detectors, 010308 nuclear & particles physics, business.industry, Detector, Reconstruction algorithm, Charged particle, Gas electron multiplier, business
Abstract

Gas detectors are very light instruments used in high energy physics to measure the particle properties: position and momentum. Gas Electron Multiplier (GEM) technology has been invented by F. Sauli in 1997 and in the past tens of years the knowledge of this Micro Pattern Gas Detector (MPGD) increased. A design with a triple-GEM has been used in several experiments in high energy physics such as TOTEM and COMPASS. This technology allows to achieve good spatial resolution performances and can be used to create large area detector with a shapeable surface, e.g. the KLOE2 Inner Tracker or the upcoming upgrade of the BESIII Inner Tracker. A triple-GEM uses three stages of GEMs, with high electric field, to amplify the number of the electrons produced by the primary ionization of the charged particle passing in the gas, with a total gain of about 104. The signal is then collected on a segmented anode and dedicated algorithms are used to reconstruct the charged particle position. The measurement of both the time and the charge information on the anode strip allows to use two algorithms: the Charge Centroid and the micro-Time Projection Chamber readout. The CC is strongly performing with orthogonal tracks while the µTPC gives its best results if magnetic field or if non-orthogonal tracks are present. These reconstruction methods are anti-correlated and the combination of the two is needed to keep the spatial resolution stable between the regions with different performances. A beam test with planar triple-GEM has been performed and in this presentation the merging algorithm of the CC and µTPC as a function of the charge and the multiplicity of the signal will be shown: a stable spatial resolution of about 130 µm has been achieved. In addition to this, the impact of the transversal and longitudinal diffusions on the reconstruction in µTPC mode will be shown, as well as the inter-strip capacitance effect.

Published
2018

18. Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV

Author

J. Zhao, Z. A. Liu, X. Wang, F. De Mori, Magnus Wolke, Y. F. Liang, Y.T. Gu, V. Prasad, T. T. Han, Z.T. Sun, S. Marcello, Y. Zeng, Y. Ban, Xujin Yuan, P. Weidenkaff, F. H. Heinsius, X. L. Gao, T. Y. Xing, D. Y. Chen, W. Imoehl, S. B. Liu, R. Farinelli, J. G. Lu, S. J. Zhao, C.X. Liu, Z.Y. Deng, Y. P. Guo, H. J. Li, Stephen Lars Olsen, R. Kliemt, X. H. Xie, X. R. Zhou, D.H. Wei, G.F. Xu, Andrzej Kupsc, W.Y. Sun, M. L. Chen, T. Lenz, Y. B. Chen, Y. Fang, Z. Y. You, Z. A. Zhu, W. C. Yan, Gang Chen, R. S. Shi, Cheng Li, D. M. Li, Z. Y. Yuan, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, R. Baldini Ferroli, Q. J. Xu, H. Liang, L. Sun, T. Weber, C. Dong, J.Y. Zhang, S. Sosio, M. Qi, F. Li, J.H. Yin, T. Hu, Z.Y. Wang, Zujian Wang, M. Pelizaeus, A. Bortone, Xuanhong Lou, S. Ahmed, C. W. Wang, M. Fritsch, Viktor Thorén, Nasser Kalantar-Nayestanaki, Y. Bai, H. J. Yang, Z. Ning, S. Y. Xiao, A. Yuncu, Jens Soeren Lange, C. P. Shen, L. J. Wu, X. Wu, S.A. Cetin, S. Nakhoul, M.N. Achasov, Yue Pan, O. Bakina, K. Liu, Tao Luo, J.H. Zou, Q. Liu, Y.Z. Sun, L. Yan, J. F. Hu, X.S. Kang, F.X. Lu, G.X. Sun, W. M. Song, Y. X. Tan, P. X. Shen, Z. Wu, L. Y. Dong, X.Q. Hao, Zhiyong Zhang, S. L. Yang, Ke Liu, Q. A. Malik, Zhenjun Xiao, A. Sarantsev, C.L. Luo, X. L. Lu, L. L. Ma, L. Gong, T. Liu, L. Koch, Libo Guo, L.L. Wang, Joachim Pettersson, L. G. Xia, A. Amoroso, J.L. Ping, J. Tang, B. Zhong, X. Y. Jiang, Shuai Liu, R.P. Guo, Jinfei Wu, M. M. Ma, Zhiqing Zhang, F. Feldbauer, X. L. Ji, Z.X. Meng, Yu Lu, P. Kiese, Yuan Hou, M. Rolo, H. Y. Zhang, B. X. Yu, L. Fava, Zhi Yang, L. M. Gu, Yunlong Zhang, A. Dbeyssi, L.H. Wu, R. A. Briere, J. J. Xu, L. P. Zhou, A. Calcaterra, H. B. Li, A. G. Denig, Q. Zhou, Y. J. Mo, R. B. de Boer, Guangyi Zhang, X.P. Qin, Feng Liu, N. Yu. Muchnoi, I. K. Keshk, C. X. Lin, F. F. Sui, M. Rump, M. H. Gu, D. C. Shan, Shan Jin, Xu Yan, Y. M. Ma, H. J. Lu, Z. H. Qin, X D Shi, Q. Ji, Y. J. Mao, R. Kiuchi, R. T. Ma, M. Y. Dong, Y. Zhang, X. S. Jiang, R. Poling, F.H. Liu, I. Denysenko, J. V. Bennett, H. Xiao, Ziyuan Li, Y. H. Zheng, C. X. Yu, Cong-Feng Qiao, B.S. Zou, X. N. Ma, J. B. Jiao, J. Fang, I.B. Nikolaev, G. Li, Jianping Zheng, A. Lavania, W. Shan, C. Zhong, B. Kopf, Z. Jiao, S. F. Zhang, I. Garzia, L. Zhang, R. X. Yang, Wei Xu, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, Y.T. Liang, Tao Zhang, T. Holtmann, W.G. Li, B. Zheng, R. G. Ping, P. Adlarson, K. Peters, J. Y. Liu, M. Savrié, Y. K. Heng, Y.X. Zhao, H. S. Chen, G. Chelkov, Y. B. Zhao, Ch. Rosner, K. L. He, Junfeng Sun, Ziyi Wang, J. Dong, Zhiqing Liu, Q.M. Ma, T. J. Min, F.C. Ma, M. Ablikim, M. Z. Wang, A. Rivetti, M. Bertani, M. Albrecht, Y. H. Zhang, M. Kavatsyuk, Jianyu Zhang, Huihui Liu, H. L. Dai, T. Z. Han, J. Q. Zhang, J. G. Messchendorp, H. C. Shi, Q. Zhao, G. Felici, C.H. Li, S. S. Sun, K. Zhu, M. Kuemmel, Matthew Glenn Kurth, M.H. Ye, Jimin Zhao, X. Y. Shen, P.R. Li, S. Nisar, C. J. Tang, T. Johansson, J. F. Chang, X. Liu, J. Libby, Y. F. Wang, P. L. Li, Y. F. Long, X.R. Chen, K. Ravindran, W. D. Li, O.B. Kolcu, Xu Shan, X. L. Luo, L. Lavezzi, J. P. Dai, Q.P. Ji, M. Destefanis, X. S. Qin, Y. P. Lu, C.D. Fu, D. Dedovich, X. H. Mo, W. Kühn, X. F. Cui, B. Wang, M. Greco, L.Q. Qin, H. R. Qi, X. Cai, C. F. Redmer, J. D. Lu, B.X. Zhang, B. T. Tsednee, C. Schnier, D. Bettoni, L. Z. Liao, Meng Wang, Muhammad Irshad, L. Yang, X. Pan, Y. G. Xie, Ke Wang, C. Li, M. G. Zhao, Y. H. Yang, M. H. Ye, X. X. Ma, J. Zhu, A. Pitka, Y. Ding, Xiongfei Wang, G. Cibinetto, Yi Zhang, R. E. Mitchell, Yan Zhang, Y. K. Sun, Z. Huang, S. Spataro, X. P. Xu, H. B. Jiang, Jiawei Zhang, J. L. Li, John Jake Lane, X. T. Huang, G. S. Huang, Evelina Gersabeck, S. Lusso, H.L. Ma, Guoqiang Yu, G. Rong, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, P. Larin, S. Zhang, I. Balossino, X. Zhou, Y. Fu, Bibo Ke, M. X. Luo, Dylan Jaide White, S. X. Du, W. Gradl, H. Cai, F. A. Harris, W. L. Chang, W. B. Yan, Y. Hu, K. Schoenning, Y. Gao, L. Q. Huang, W. J. Zhu, Jacek Biernat, Y. Schelhaas, X. D. Shi, Y. X. Song, D. Y. Wang, Lei Li, B. L. Wang, H. M. Liu, Y. Jin, H. Leithoff, S. Han, T. Hussain, L. Zhao, I. Boyko, Niklaus Berger, Lei Zhang, X. Y. Ma, W. X. Gong, Y. Nefedov, A. Khoukaz, Ruiting Ma, M. Shao, A. Pathak, S. Pacetti, Z. Qian, G. F. Cao, N. Huesken, Y. C. Zhu, Xiao-Rui Lyu, S. Malde, R. Kappert, B.J. Liu, Y. H. Tan, Ke Li, Haiping Peng, Z. G. Zhao, T. Held, K. Begzsuren, Y. G. Gao, W. H. Wang, H. H. Zhang, Q. Q. Song, S. Gu, Fang Liu, C.X. Yue, S.P. Wen, M. Lellmann, S. Maldaner, Y. J. Xiao, J. Q. Li, A. Q. Guo, Y.Q. Wang, S. Janchiv, J.F. Qiu, X. A. Xiong, L. D. Liu, W. P. Wang, F. Bianchi, J. Bloms, A. A. Zafar, K. H. Rashid, Y.D. Wang, Z.P. Mao, S. Qian, Q. An, A. Guskov, S. J. Chen, X. Y. Zhang, X. L. Wang, J. B. Liu, Y. J. Sun, Yifan Yang, D. Y. Liu, Zongyuan Wang, F. Weidner, Y. Yuan, W. L. Yuan, Q. Ouyang, S. S. Fang, C. Y. Guan, F. Nerling, Y. B. Liu, J.L. Zhang, Huanhuan Liu, F.E. Maas, Dong E. Liu, X. H. Li, L. Wollenberg, Xingchao Dai, Si Li, M. Kuessner, Tao Sun, Y. H. Xie, M. Maggiora, Lei Zhao, K. Goetzen, C. Z. Yuan, N. Cao, A. Zhemchugov, P. W. Luo, I. Uman, L. K. Li, P. Patteri, S. Jaeger, H.X. Yang, H.B. Liu, V. Rodin, Y.X. Yang, X. B. Ji, K.Y. Liu, Bingxuan Liu, G. Wilkinson, M. Himmelreich, G. Y. Tang, W. S. Cheng, Yao Zhang, S.H. Zhu, A. Gilman, Guang Zhao, F. Cossio, Jie Zhao, C. Q. Feng, Hai-Tian Wang, Z.L. Hou, Xingguo Li, H. M. Hu, A. Mangoni, Jie Yu, G. Mezzadri, K. J. Zhu, J. W. Zhang, T. Y. Qi, T. Yu, X. K. Zhou, Wenbin Qian, Nuclear Energy, Research unit Nuclear & Hadron Physics, and Energy and Sustainability Research Institute Groni

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, BESIII, Excited ρ states, Excited ω states, 01 natural sciences, Resonance (particle physics), lcsh:QC1-999, NO, law.invention, Nuclear physics, law, 0103 physical sciences, ϕ(2170), Center of mass, 010306 general physics, Collider, lcsh:Physics
Abstract

Born cross sections for the processes e + e − → ω η and e + e − → ω π 0 have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detector at the BEPCII collider. The results obtained in this work are consistent with previous measurements but with improved precision. Two resonant structures are observed. In the e + e − → ω η cross sections, a resonance with a mass of ( 2176 ± 24 ± 3 ) MeV / c 2 and a width of ( 89 ± 50 ± 5 ) MeV is observed with a significance of 6.2σ. Its properties are consistent with the ϕ ( 2170 ) . In the e + e − → ω π 0 cross sections, a resonance denoted Y ( 2040 ) is observed with a significance of more than 10σ. Its mass and width are determined to be ( 2034 ± 13 ± 9 ) MeV / c 2 and ( 234 ± 30 ± 25 ) MeV , respectively, where the first uncertainties are statistical and the second ones are systematic.

Published
2021

19. Precision Study of η′→γπ+π− Decay Dynamics

Author

X. L. Luo, W. P. Wang, T. Holtmann, G. Felici, L. J. Wu, H. J. Li, Q. L. Xiu, M. Y. Dong, Q. Ouyang, S. L. Niu, S. S. Fang, F. Bianchi, Y. B. Liu, F. Y. Li, Jin Li, X. L. Gao, X. N. Ma, Y. H. Guan, J. Y. Liu, R. Kliemt, M. Tiemens, H. B. Liu, C. Leng, J. F. Sun, Xiao-Rui Lyu, M. H. Gu, X. Q. Li, Y. F. Long, M. Greco, Kai Liu, Y. J. Mo, H. Y. Sheng, M. Maggiora, J. P. Dai, Ling Zhao, J. H. Liu, A. Dbeyssi, Ke Wang, C. Dong, M. H. Ye, S. Marcello, Y. Zeng, F. De Mori, X. Y. Jiang, S. Sosio, Yaquan Fang, Z. G. Zhao, S. Fegan, A. Zallo, J. H. Zou, C. X. Yu, Y. Nefedov, M. M. Ma, J. C. Chen, Lei Zhao, Jie Yu, G. S. Varner, Q. Gao, Y. N. Gao, Joachim Pettersson, Z. L. Hou, X. Cai, Y. Zhang, H. H. Zhang, Y. Ban, X. Y. Zhou, L. Yang, M. Fritsch, B. Zheng, Zahra Haddadi, R. G. Ping, M. G. Zhao, R. P. Guo, H. S. Chen, K. Y. Liu, C. Hu, T. Weber, P. F. Duan, J. Q. Zhang, L. D. Liu, J. Z. Zhang, X. Tang, Z. T. Sun, S. S. Sun, Z. J. Sun, R. Poling, Y. N. Zhang, Guo-Ming Chen, J. Z. Fan, A. Yuncu, M. Kavatsyuk, H. Loehner, X. L. Ji, Z. A. Liu, Cui Li, Y. Pan, L. Y. Dong, Orhan Cakir, B. L. Wang, J. Chai, M. N. Achasov, Q. P. Ji, T. J. Min, K. J. Zhu, K. Schoenning, Q. Y. Li, B. S. Zou, P. Kiese, G. X. Sun, C. Z. Yuan, Z. G. Wang, Niklaus Berger, S. L. Olsen, T. C. Zhao, H. J. Lu, J. G. Lu, V. Prasad, Xianglei Zhu, P. Weidenkaff, F. H. Heinsius, F. Li, X. S. Jiang, F. C. Ma, S. Ahmed, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Liqing Xu, X. Y. Shen, H. Liang, F. E. Maas, T. Hu, R. E. Mitchell, B. X. Zhang, O. Fedorov, W. J. Zheng, Yanwei Wang, Y. X. Yang, Y. G. Xie, X. F. Wang, S. P. Wen, X. S. Qin, W. Gradl, M. Ripka, S. X. Du, X. R. Zhou, Y. Ding, K. Li, Z. L. Dou, Cheng Li, X. K. Zhou, Fang Liu, Krisztian Peters, D. Y. Wang, Guangshun Huang, B. J. Liu, L. Yan, J. C. Li, I. Denysenko, Jun-Yi Zhang, Q. M. Ma, D. Bettoni, Y. P. Guo, S. Schumann, J. Min, I. B. Nikolaev, J. Zhuang, R. Baldini Ferroli, B. Kloss, B. Y. Zhang, J. F. Qiu, W. Kühn, Z. P. Zhang, A. Hafner, Q. Zhao, Dmitri Dedovich, Y. Z. Sun, J. H. Yin, Yao Wang, X. B. Ji, Yunlong Zhang, Q. A. Malik, G. Mezzadri, A. Denig, W. C. Yan, X. Y. Niu, M. X. Luo, Yucheng Huang, M. Shao, Y. T. Gu, Y. F. Wang, L. Fava, B. Kopf, M. Albrecht, Z. Y. You, P. Patteri, Z. A. Zhu, Y. Yuan, Y. S. Zhu, M. Bertani, Yu Zhang, Peilian Liu, F. Nerling, G. R. Liao, J. V. Bennett, P. X. Shen, K. L. He, Xiang Zhou, Zhuoming Li, D. W. Bennett, Zujian Wang, L. P. Zhou, E. Fioravanti, Bibo Ke, J. L. Zhang, J. F. Hu, Zhiyong Zhang, D. J. Ambrose, Z. Wu, W. B. Yan, Y. M. Ma, M. Z. Wang, T. Hussain, X. Y. Ma, X. L. Kang, L. W. Jiang, Z. P. Mao, A. Sarantsev, D. H. Wei, P. R. Li, S. Pacetti, Jimin Zhao, Y. X. Xia, S. H. Zhu, Q. Liu, J. S. Lange, Q. W. Zhao, W. X. Gong, Gueorgui Chelkov, Bingxuan Liu, Jianping Zheng, M. L. Chen, H. P. Cheng, Gang Zhao, X. N. Li, G. Li, X. Fang, S. Zhu, J. Fang, Tao Li, Z. Gao, X. D. Ruan, W. G. Li, M. Qi, Zhiqing Zhang, H. J. Yang, M. Ablikim, Haiping Peng, Z. L. Huang, Feng Liu, L. L. Ma, L. Gong, Y. B. Zhao, Lei Zhang, H. B. Li, C. L. Luo, Ch. Rosner, C. D. Fu, W. Shan, X. H. Sun, J. Dong, P. L. Wang, W. D. Li, Tao Luo, X. H. Mo, L. S. Wang, L. G. Xia, S. Spataro, X. P. Xu, C. Q. Feng, X. R. Chen, Y. Y. Liu, Y. Q. Wang, S. Nisar, C. C. Zhang, B. X. Yu, B. Zhong, L. B. Guo, L. L. Wang, R. Farinelli, Lei Li, C. J. Tang, J. J. Zhang, M. Destefanis, Y. Hu, F. A. Harris, Chi Zhang, H. M. Liu, S. B. Liu, Y. P. Lu, Zhi Zeng, H. Cai, L. Zotti, H. Muramatsu, I. Tapan, Y. H. Yan, H. L. Ma, Ulrich Wiedner, D. M. Li, B. Wang, J. W. Zhao, M. Kornicer, Y. C. Zhu, H. Leithoff, T. Ma, G. Cibinetto, D. Xiao, Y. J. Mao, H. R. Qi, R. A. Briere, H. X. Yang, A. Julin, Z. Y. Deng, Xingguo Li, Z. Ning, H. Xiao, E. Boger, M. Pelizaeus, Igor Boyko, I. Garzia, H. L. Dai, T. Held, Huihui Liu, Serkant Ali Cetin, J. P. Liu, Zhiqing Liu, J. G. Messchendorp, Jie Zhao, D. X. Lin, T. Johansson, Qiunan Xu, M. Shi, S. Qian, O. B. Kolcu, A. Calcaterra, Jialun Ping, A. Amoroso, K. Zhang, A. Q. Guo, X. Y. Zhang, W. M. Song, X. Q. Hao, M. Lara, J. B. Liu, Alexey Zhemchugov, H. M. Hu, Y. J. Sun, Xuesong Liu, Z. H. Qin, D. Y. Liu, J. B. Jiao, S. Q. Zhang, Q An, J. W. Zhang, H. Y. Zhang, I. Uman, P. Larin, S. Z. Chen, J. J. Xu, Y. B. Li, J. S. Huang, C. X. Liu, E. H. Thorndike, L. Q. Qin, J. Z. Bai, F. Feldbauer, X. C. Chen, G. F. Xu, S. Jin, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, N. Yu. Muchnoi, G. F. Cao, X. S. Kang, Y. H. Zhang, Y. Guo, Z. Y. Wang, Yi Chen, X. K. Chu, X. Y. Song, K. Goetzen, J. Y. Zhang, C. P. Shen, Y. K. Heng, J. M. Bian, S. J. Zhao, Q. J. Xu, Xuanhong Lou, Nasser Kalantar-Nayestanaki, C. Morales Morales, Z. J. Xiao, Z. H. Wang, F. F. An, P. Musiol, C. F. Redmer, Xiaocong Ai, Xiaozhong Huang, C. Schnier, X. T. Huang, G. Rong, Andrzej Kupsc, W. L. Yuan, A. A. Zafar, K. H. Rashid, J. F. Chang, Magnus Wolke, Y. T. Liang, Y. F. Liang, S. J. Chen, D. P. Jin, S. Han, Dayong Wang, N. Qin, L. H. Wu, M. Savrie, and L. Xia

Subjects
Physics, Rho meson, 010308 nuclear & particles physics, Electron–positron annihilation, Background data, Form factor (quantum field theory), General Physics and Astronomy, Resonance, 01 natural sciences, Amplitude, Orders of magnitude (time), 0103 physical sciences, Anomaly (physics), Atomic physics, 010306 general physics
Abstract

Using a low background data sample of 9.7×10^{5} J/ψ→γη^{'}, η^{'}→γπ^{+}π^{-} events, which are 2 orders of magnitude larger than those from the previous experiments, recorded with the BESIII detector at BEPCII, the decay dynamics of η^{'}→γπ^{+}π^{-} are studied with both model-dependent and model-independent approaches. The contributions of ω and the ρ(770)-ω interference are observed for the first time in the decays η^{'}→γπ^{+}π^{-} in both approaches. Additionally, a contribution from the box anomaly or the ρ(1450) resonance is required in the model-dependent approach, while the process specific part of the decay amplitude is determined in the model-independent approach.

Published
2018

20. Determination of the Spin and Parity of the Zc(3900)

Author

H. B. Li, A. G. Denig, C. L. Luo, C. C. Zhang, Guangshun Huang, L. Yan, A. A. Zafar, L. J. Wu, Y. J. Mo, B. Zhong, L. B. Guo, H. Muramatsu, Ulrich Wiedner, M. Kornicer, T. Ma, Y. F. Wang, H. S. Chen, T. Weber, Y. J. Mao, H. X. Yang, I. Garzia, M. Y. Dong, M. Tiemens, X. L. Gao, F. Li, F. C. Ma, K. H. Rashid, Jin Li, T. Hussain, X. Y. Ma, Q. P. Ji, Huihui Liu, H. B. Liu, J. H. Zou, M. Ullrich, Z. J. Xiao, G. Felici, G. A. Chelkov, S. J. Chen, M. G. Zhao, R. P. Guo, W. X. Gong, Liqing Xu, X. Y. Shen, J. P. Liu, J. G. Messchendorp, S. S. Sun, C. Dong, S. Sosio, J. F. Qiu, L. Fava, F. Nerling, Y. H. Guan, Kai Liu, P. L. Wang, F. A. Harris, A. Calcaterra, Z. G. Zhao, H. H. Zhang, Y. Ding, B. J. Liu, J. P. Dai, Qiunan Xu, M. Shi, R. E. Mitchell, Y. N. Zhang, Jie Zhao, D. X. Lin, Z. J. Sun, H. Loehner, H. J. Li, X. H. Sun, R. Kliemt, Z. A. Zhu, D. Y. Liu, J. B. Jiao, A. Q. Guo, M. Bertani, E. H. Thorndike, L. Q. Qin, Joachim Pettersson, Y. Nefedov, J. Y. Liu, I. B. Nikolaev, J. H. Yin, X. N. Ma, Y. T. Liang, A. Zallo, X. K. Chu, J. C. Li, Z. G. Wang, H. Y. Zhang, J. Zhuang, M. X. Luo, Orhan Cakir, P. Kiese, Alexey Zhemchugov, H. M. Hu, R. Baldini Ferroli, M. Maggiora, W. M. Song, Ling Zhao, Lei Zhao, Z. L. Hou, M. Shao, Y. T. Gu, Q. L. Xiu, X. L. Ji, D. J. Ambrose, J. J. Liang, S. L. Olsen, L. Yang, Yaquan Fang, Jie Yu, G. F. Xu, F. Feldbauer, X. C. Chen, X. Y. Jiang, Q. Gao, Y. N. Gao, Z. H. Wang, E. Fioravanti, Bibo Ke, Y. Zhang, Q. An, R. A. Briere, Jian Wei, Yucheng Huang, D. V. Dedovich, G. F. Chen, C. P. Shen, J. Y. Zhang, W. B. Yan, M. M. Ma, X. N. Li, M. Fritsch, W. P. Wang, Xiaozhong Huang, X. S. Jiang, M. N. Achasov, C. F. Redmer, Xiaocong Ai, C. Leng, S. Jin, Yanwei Wang, Haiping Peng, S. Q. Zhang, Z. H. Qin, W. G. Li, M. Kavatsyuk, J. Z. Fan, J. W. Zhang, S. Pacetti, Zahra Haddadi, X. M. Li, Tao Luo, B. X. Yu, W. Gradl, M. Ripka, Zhi Zeng, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, Peilian Liu, Lingxuan Zhang, Zhiyong Zhang, S. Spataro, X. P. Xu, Q. W. Zhao, D. Y. Wang, Y. Pan, Cui Li, Y. G. Xie, Q. Liu, X. T. Huang, G. Rong, M. H. Ye, C. Z. Yuan, B. X. Zhang, Y. K. Heng, J. M. Bian, S. J. Zhao, G. X. Sun, J. V. Bennett, Lei Li, K. J. Zhu, G. Cibinetto, H. M. Liu, Andrzej Kupsc, W. L. Yuan, L. D. Liu, K. Li, S. Han, M. L. Chen, X. K. Zhou, Fang Liu, Q. Ouyang, L. Y. Dong, I. Denysenko, Q. J. Xu, Y. Guo, X. D. Ruan, J. C. Chen, Xuanhong Lou, Z. Jiao, Fu-Hu Liu, S. X. Du, J. Min, Z. L. Dou, R. Farinelli, S. L. Niu, F. Y. Li, X. Q. Li, G. F. Cao, Shan Wang, Xiao-Rui Lyu, D. H. Zhang, M. Greco, S. S. Fang, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Z. T. Sun, Z. A. Liu, K. Schoenning, Q. Y. Li, B. S. Zou, B. Kopf, Nasser Kalantar-Nayestanaki, C. Morales Morales, H. L. Dai, Igor Boyko, J. Q. Zhang, K. L. He, L. L. Ma, L. Gong, Y. B. Liu, Bingxuan Liu, X. Y. Song, N. Yu. Muchnoi, B. Y. Zhang, H. L. Ma, X. S. Kang, V. Prasad, S. Schumann, W. J. Zheng, S. Qian, Jialun Ping, Yao Wang, Jun-Yi Zhang, J. H. Liu, L. G. Xia, D. M. Li, A. Amoroso, Y. P. Guo, Y. H. Zhang, G. S. Varner, Magnus Wolke, K. Zhang, X. Y. Zhang, Y. Ban, P. Weidenkaff, Y. F. Liang, M. Z. Wang, H. J. Lu, Jimin Zhao, J. G. Lu, K. Goetzen, Z. P. Zhang, W. Kuehn, Ke Wang, A. Dbeyssi, M. Albrecht, X. L. Luo, D. P. Jin, W. D. Li, S. P. Wen, M. Pelizaeus, G. Li, K. Y. Liu, M. Lara, J. B. Liu, F. E. Maas, X. S. Qin, X. R. Zhou, T. Hu, Z. B. Li, H. Liang, Y. X. Yang, Z. Y. Wang, Cheng Li, Dayong Wang, N. Qin, Y. J. Sun, P. F. Duan, M. Qi, H. J. Yang, Y. P. Lu, D. W. Bennett, Zujian Wang, A. Julin, F. Bianchi, Y. X. Xia, S. H. Zhu, C. D. Fu, X. Fang, C. Q. Feng, X. R. Chen, P. X. Shen, Z. Wu, F. De Mori, L. W. Jiang, Z. Y. Deng, Fenfen An, Z. L. Huang, Feng Liu, A. Hafner, B. L. Wang, Zhiqing Zhang, M. H. Gu, X. Y. Zhou, Q. Zhao, Y. Z. Sun, M. Ablikim, Y. B. Zhao, Xingguo Li, H. Y. Sheng, X. H. Mo, W. Shan, Xiang Zhou, L. S. Wang, X. Liu, H. R. Qi, J. Dong, C. X. Yu, T. C. Zhao, X. F. Wang, W. C. Yan, O. Fedorov, Y. Q. Wang, Gang Zhao, S. Nisar, J. J. Xu, B. Zheng, R. G. Ping, Q. M. Ma, J. Z. Bai, I. Tapan, S. B. Liu, C. J. Tang, Y. Hu, Serkant Ali Cetin, B. Kloss, Y. B. Li, X. Y. Niu, L. L. Wang, Y. H. Yan, J. W. Zhao, Y. Yuan, J. S. Huang, Y. S. Zhu, Yu Zhang, B. Wang, D. Xiao, L. P. Zhou, C. X. Liu, Y. M. Ma, Y. C. Zhu, H. Cai, I. Uman, Z. P. Mao, H. P. Cheng, H. Xiao, E. Boger, J. Fang, Tao Li, T. Held, Z. Gao, P. Larin, Ch. Rosner, X. B. Ji, S. Z. Chen, P. Patteri, Krisztian Peters, C. Hu, X. Tang, A. Yuncu, Yunlong Zhang, D. Bettoni, J. L. Zhang, R. Poling, Jianping Zheng, G. R. Liao, S. Zhu, J. F. Hu, J. J. Zhang, M. Destefanis, J. F. Sun, S. Marcello, Y. Zeng, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Zhiqing Liu, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, X. Q. Hao, Z. Ning, Chi Zhang, L. Zotti, L. H. Wu, M. Savrie, X. Y. Gao, and L. Xia

Subjects
Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Partial wave analysis, Analytical chemistry, General Physics and Astronomy, Parity (physics), Quantum number, 01 natural sciences, Nuclear magnetic resonance, 0103 physical sciences, Pi, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

The spin and parity of the Z(c)(3900)(+/-) state are determined to be J(P) = 1(+) with a statistical significance larger than 7 sigma over other quantum numbers in a partial wave analysis of the process e(+)e(-) -> pi(+)pi(-) J/psi We use a data sample of 1.92 fb(-1) accumulated at root s = 4.23 and 4.26 GeV with the BESIII experiment. When parametrizing the Z(c)(3900)(+/-) with a Flatte-like formula, we determine its pole mass M-pole = (3881.2 +/- 4.2(stat) +/- 52.7(syst)) MeV/c(2) and pole width Gamma(pole) = (51.8 +/- 4.6(stat) +/- 36.0(syst)) MeV. We also measure cross sections for the process e(+)e(-) -> Z(c)(3900)(+)pi(-) + c.c. -> J/psi pi(+)pi(-) and determine an upper limit at the 90% confidence level for the process e(+)e(-) -> Z(c)(4020)(+)pi(-) + c.c. -> J/psi pi(+)pi(-).

Published
2017

21. Improved measurements of branching fractions for ηc→ϕϕ and ωϕ

Author

X. Y. Jiang, M. M. Ma, Bibo Ke, W. B. Yan, Zahra Haddadi, M. N. Achasov, J. M. Bian, S. Pacetti, H. B. Li, Y. Pan, A. G. Denig, C. L. Luo, S. J. Zhao, C. C. Zhang, B. Zhong, L. B. Guo, G. X. Sun, J. V. Bennett, Ke Li, M. Qi, Z. Jiao, Fu-Hu Liu, D. H. Zhang, H. Muramatsu, Ulrich Wiedner, Q. J. Xu, H. J. Yang, J. C. Chen, Xuanhong Lou, T. Ma, Nasser Kalantar-Nayestanaki, J. F. Sun, X. L. Ji, G. A. Chelkov, Xiaozhong Huang, C. Morales Morales, F. Li, X. K. Zhou, Y. B. Liu, Fang Liu, P. L. Wang, F. C. Ma, Talib Hussain, I. Denysenko, I. Tapan, I. Uman, Y. H. Yan, W. C. Yan, B. Y. Zhang, Andrzej Kupsc, W. L. Yuan, J. W. Zhao, M. L. Chen, X. L. Luo, J. F. Qiu, Y. C. Zhu, L. P. Zhou, S. Marcello, Y. Zeng, S. B. Liu, L. Fava, Magnus Wolke, M. Y. Dong, Y. M. Ma, Y. F. Liang, D. P. Jin, F. Nerling, J. C. Li, Dayong Wang, N. Qin, M. Tiemens, Q. Liu, Jun-Yi Zhang, Yanwei Wang, Y. P. Guo, Jin Li, H. Xiao, Z. P. Mao, J. Zhuang, M. Ullrich, Z. J. Xiao, A. Yuncu, W. G. Li, J. H. Zou, Y. H. Zheng, M. X. Luo, H. P. Cheng, J. Fang, Tao Li, Cong-Feng Qiao, J. Min, S. S. Sun, O. Albayrak, S. L. Niu, T. Held, Y. H. Guan, Yucheng Huang, D. V. Dedovich, Z. P. Zhang, Y. G. Xie, X. D. Ruan, F. Y. Li, X. Q. Li, Z. Ning, Y. B. Chen, Z. Gao, P. Larin, W. P. Wang, Kai Liu, S. X. Du, H. J. Lu, J. G. Lu, B. Kopf, N. Yu. Muchnoi, Xiaofeng Zhu, J. Z. Zhang, M. Greco, Ch. Rosner, G. F. Xu, R. E. Mitchell, F. Bianchi, M. G. Zhao, R. P. Guo, X. S. Kang, L. L. Ma, L. Gong, K. L. He, Klaus Peters, D. W. Bennett, Zujian Wang, Z. L. Dou, A. Calcaterra, Z. G. Zhao, F. E. Maas, Y. H. Zhang, Z. T. Sun, S. Z. Chen, T. Hu, M. Z. Wang, D. J. Ambrose, S. Jin, L. G. Xia, Y. N. Zhang, Jimin Zhao, A. Amoroso, R. Baldini Ferroli, Y. Nefedov, H. H. Zhang, S. J. Chen, Z. J. Sun, H. Loehner, S. Spataro, X. P. Xu, Z. G. Wang, Z. Y. Wang, H. Y. Zhang, R. Kliemt, Y. Guo, H. Liang, I. B. Nikolaev, Xiao-Rui Lyu, A. Dbeyssi, Q. P. Ji, Y. B. Zhao, P. X. Shen, Z. Wu, M. Bertani, L. Yang, M. Albrecht, K. Y. Liu, Z. B. Li, Z. A. Liu, H. Y. Chen, G. F. Chen, Zhiqing Liu, W. D. Li, L. W. Jiang, W. Shan, M. Kornicer, J. Dong, Zhiqing Zhang, X. Y. Song, X. N. Li, Y. X. Xia, S. H. Zhu, E. H. Thorndike, P. Kiese, J. Y. Zhang, Lei Li, Cui Li, H. M. Liu, T. Johansson, J. F. Chang, Haiping Peng, Y. Q. Wang, A. Julin, J. H. Liu, Jie Yu, C. Leng, Ke Wang, G. S. Varner, L. Q. Qin, S. L. Olsen, R. A. Briere, Z. H. Wang, S. Nisar, C. J. Tang, W. Gradl, K. Goetzen, Chi Zhang, O. B. Kolcu, X. Cai, Y. Hu, M. Ripka, F. De Mori, F. Feldbauer, X. S. Jiang, Y. P. Lu, G. F. Cao, Y. K. Heng, D. Y. Wang, C. F. Redmer, Xiaocong Ai, V. Prasad, J. Q. Zhang, P. F. Duan, Fenfen An, X. Q. Hao, X. Y. Zhou, B. Wang, X. C. Chen, B. L. Wang, T. C. Zhao, X. T. Huang, Yu Zhang, A. A. Zafar, D. Xiao, G. Rong, O. Cakir, O. Fedorov, T. J. Min, Tao Luo, Q. Ouyang, X. F. Wang, L. Zotti, S. Han, Yunlong Zhang, B. X. Yu, Zhi Zeng, K. J. Zhu, S. S. Fang, Q. M. Ma, Jie Zhao, D. X. Lin, D. Bettoni, S. Qian, Jialun Ping, B. Kloss, Y. F. Wang, A. Q. Guo, F. A. Harris, H. M. Hu, Yaquan Fang, L. H. Wu, G. R. Liao, X. Y. Niu, Y. Ban, P. Weidenkaff, Y. Yuan, Y. S. Zhu, J. F. Hu, G. Cibinetto, W. M. Song, J. L. Zhang, M. Savrie, H. L. Dai, Igor Boyko, J. W. Zhang, X. Y. Ma, W. X. Gong, G. Felici, X. Y. Gao, L. Xia, K. Zhang, R. Poling, Z. H. Qin, Jianping Zheng, Y. J. Mao, H. X. Yang, X. H. Sun, H. J. Li, S. Zhu, I. Garzia, J. Z. Bai, Q. L. Xiu, Huihui Liu, J. P. Liu, J. G. Messchendorp, J. P. Dai, Qiunan Xu, M. Shi, X. Y. Zhang, K. Schoenning, Q. Y. Li, B. S. Zou, J. J. Xu, S. P. Wen, J. J. Zhang, M. Destefanis, Y. B. Li, X. S. Qin, X. R. Zhou, X. B. Ji, X. L. Gao, P. Patteri, Cheng Li, J. S. Huang, Bingxuan Liu, C. Dong, S. Sosio, M. Lara, G. Li, J. B. Liu, C. D. Fu, C. Q. Feng, Joachim Pettersson, X. R. Chen, Z. Y. Deng, C. X. Liu, C. Hu, Xingguo Li, X. Tang, Y. J. Sun, E. Boger, M. H. Gu, H. Y. Sheng, S. Schumann, Yao Wang, C. X. Yu, X. Liu, H. R. Qi, B. Zheng, R. G. Ping, X. K. Chu, X. N. Ma, Y. T. Liang, A. Zallo, Serkant Ali Cetin, Peilian Liu, D. Y. Liu, J. B. Jiao, M. Fritsch, Lingxuan Zhang, Zhiyong Zhang, Y. Ding, B. J. Liu, M. Kavatsyuk, W. Kühn, S. Q. Zhang, R. Farinelli, Z. A. Zhu, H. L. Ma, D. M. Li, B. X. Zhang, C. P. Shen, L. J. Wu, X. Fang, Z. L. Huang, M. Pelizaeus, Feng Liu, Y. J. Mo, M. Ablikim, Y. X. Yang, J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, H. S. Chen, T. Weber, E. Fioravanti, H. B. Liu, A. Hafner, Q. Zhao, Y. Z. Sun, X. L. Kang, A. Sarantsev, Xiang Zhou, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, Liqing Xu, X. Y. Shen, M. H. Ye, Gang Zhao, L. D. Liu, L. Y. Dong, J. Y. Liu, W. J. Zheng, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, J. Z. Fan, A. Zhemchugov, X. H. Mo, L. S. Wang, L. L. Wang, H. Cai, Guangshun Huang, L. Yan, M. Maggiora, Ling Zhao, Lei Zhao, Z. L. Hou, and C. Z. Yuan

Subjects
Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, Branching (polymer chemistry), 01 natural sciences, Omega, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

Using (223.7 +/- 1.4) x 10(6) J / Psi events accumulated with the BESIII detector, we study eta(c) decays to phi phi and omega phi final states. The branching fraction of n(c) -> phi phi is measured to be Br(eta(c) -> phi phi) = (2.5 +/- 0(-0.7)(+0.3) +/- 0.6) X 10(-3,) where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty of Br(J / Psi -> gamma eta(C)). No significant signal for the double Okubo-Zweig-Iizuka suppressed decay of eta(c) -> omega phi is observed, and the upper limit on the branching fraction is determined to be Br(eta(c) -> omega phi) < 2.5 x 10(-4) at the 90% confidence level.

Published
2017

22. Amplitude analysis of D0→K−π+π+π−

Author

M. Qi, H. J. Yang, J. F. Sun, Q. A. Malik, G. Mezzadri, W. C. Yan, H. J. Lu, J. G. Lu, S. Marcello, Y. Zeng, Zhe Sun, F. E. Maas, T. Hu, W. G. Li, A. G. Denig, Z. Gao, S. L. Niu, M. N. Achasov, X. L. Li, X. M. Li, L. P. Zhou, X. Q. Li, S. Spataro, F. De Mori, G. A. Chelkov, Y. M. Ma, Y. Y. Liu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Z. P. Mao, Z. Ning, P. L. Wang, P. X. Shen, J. M. Bian, S. J. Zhao, X. Y. Zhou, R. Baldini Ferroli, Z. Wu, X. K. Zhou, H. P. Cheng, J. Fang, Tao Li, H. M. Liu, Y. H. Guan, B. J. Liu, Zhiqing Liu, I. B. Nikolaev, J. H. Yin, L. W. Jiang, T. Johansson, J. F. Chang, K. Y. Liu, Y. F. Wang, O. B. Kolcu, X. Cai, H. B. Li, J. F. Hu, J. B. Jiao, Z. B. Li, Krisztian Peters, M. Z. Wang, Fang Liu, B. Kloss, Xiaozhong Huang, C. L. Luo, L. Zotti, M. Shao, Y. T. Gu, Zhiqing Zhang, L. J. Wu, F. A. Harris, G. F. Cao, Q. J. Xu, X. N. Li, Ch. Rosner, M. Bertani, S. B. Liu, U. Wiedner, I. Denysenko, X. F. Wang, Manuel Lara, Z. Haddadi, C. C. Zhang, Z. P. Zhang, H. Leithoff, Y. H. Zheng, M. Maggiora, Ling Zhao, J. C. Chen, Xuanhong Lou, D. J. Ambrose, Q. M. Ma, T. Hussain, Cong-Feng Qiao, O. Albayrak, E. Fioravanti, M. M. Ma, L. Yang, Jie Zhao, D. X. Lin, Haiping Peng, X. Y. Ma, B. Zhong, L. B. Guo, Y. Nefedov, T. Holtmann, Andrzej Kupsc, A. Q. Guo, Z. H. Wang, Lei Li, W. X. Gong, Alexey Zhemchugov, H. M. Hu, J. J. Liang, Lei Zhao, Z. L. Hou, Y. J. Mo, Nasser Kalantar-Nayestanaki, N. Yu. Muchnoi, Ke Wang, F. H. Liu, J. Y. Liu, C. Morales Morales, X. S. Kang, F. Li, B. Y. Zhang, F. C. Ma, X. Y. Niu, W. M. Song, P. Musiol, Yaquan Fang, M. Greco, Nicolas Berger, Shou-hua Zhu, C. Leng, Xiaocong Ai, Yue Pan, Y. Yuan, Y. S. Zhu, X. L. Kang, A. Sarantsev, Y. H. Zhang, M. L. Chen, G. R. Liao, D. H. Wei, P. R. Li, Yunlong Zhang, J. S. Lange, Q. W. Zhao, S. L. Olsen, C. Schnier, Y. Q. Wang, Yu Zhang, M. Albrecht, X. H. Sun, Q. Gao, T. Ma, G. F. Xu, Y. N. Gao, Yanping Huang, J. W. Zhang, W. Gradl, Y. Zhang, X. T. Huang, H. S. Chen, Jiaxi Liu, Shan Wang, Xiao-Rui Lyu, M. H. Ye, R. Poling, P. F. Duan, F. H. Heinsius, Fenfen An, S. Jin, G. Rong, W. P. Wang, B. L. Wang, Z. H. Qin, J. F. Qiu, Cen Zhang, Karin Schönning, J. Z. Fan, W. D. Li, C. Z. Yuan, J. Q. Zhang, X. N. Ma, D. Bettoni, Z. Y. Wang, P. Kiese, L. Y. Dong, D. Y. Wang, J. Min, S. Qian, Q. An, Jialun Ping, K. Zhang, L. Fava, T. C. Zhao, A. A. Zafar, G. X. Sun, J. V. Bennett, Li Yan, Q. P. Ji, Y. J. Mao, F. Nerling, Q. Liu, Tristan Weber, X. Y. Zhang, I. R. Boyko, H. B. Liu, H. X. Yang, I. Garzia, Z. Jiao, E. H. Thorndike, R. A. Briere, Q. Y. Li, B. S. Zou, Cui Li, A. Zallo, B. Kopf, O. Fedorov, X. S. Jiang, X. H. Liu, L. Q. Qin, J. B. Liu, M. G. Zhao, D. H. Zhang, L. L. Ma, R. Farinelli, Bibo Ke, L. Gong, A. Calcaterra, Z. G. Zhao, Y. J. Sun, K. H. Rashid, X. L. Luo, L. G. Xia, J. L. Zhang, I. Uman, W. J. Zheng, Jianping Zheng, I. Tapan, R. P. Guo, Tao Luo, K. L. He, S. W. Han, Y. N. Zhang, E. Boger, B. X. Yu, Y. P. Lu, H. L. Ma, Y. X. Xia, B. Wang, Liqing Xu, X. Y. Shen, A. Amoroso, J. P. Liu, A. Dbeyssi, Y. H. Yan, W. B. Yan, J. W. Zhao, Z. G. Wang, Zhi Zeng, Jimin Zhao, H. Y. Zhang, M. Fritsch, J. G. Messchendorp, J. P. Dai, G. S. Varner, Y. T. Liang, H. H. Zhang, S. Zhu, Z. J. Sun, H. Loehner, Y. Ding, S. Pacetti, G. S. Huang, D. M. Li, H. Muramatsu, X. C. Chen, Qiunan Xu, M. Shi, O. Cakir, Jun-Yi Zhang, M. Kornicer, Y. C. Zhu, G. F. Chen, Z. J. Xiao, C. F. Redmer, S. J. Chen, F. Y. Li, Alperen Yuncu, Jin Li, J. Y. Zhang, K. J. Li, F. Bianchi, M. Pelizaeus, X. Y. Song, S. Ahmed, M. Kavatsyuk, Y. X. Yang, Jean Pettersson, A. Julin, H. Liang, Dan Wang, H. L. Dai, H. R. Qi, S. X. Du, D. W. Bennett, Zujian Wang, H. H. Liu, J. C. Li, H. Xiao, T. Held, X. H. Mo, L. S. Wang, D. Y. Liu, S. Q. Zhang, J. Zhuang, X. Q. Hao, M. Y. Dong, Y. P. Guo, J. J. Zhang, M. Destefanis, Y. K. Heng, L. L. Wang, H. Cai, L. H. Wu, A. Hafner, Q. Zhao, Y. Z. Sun, M. Savrie, M. X. Luo, G. Felici, Jian Wei, Serkant Ali Cetin, B. X. Zhang, D. V. Dedovich, Z. A. Zhu, P. Larin, J. H. Zou, X. L. Ji, S. Z. Chen, C. Hu, Y. B. Zhao, X. Y. Gao, K. Goetzen, S. S. Sun, W. Shan, Gang Zhao, H. J. Li, J. Dong, X. Tang, Q. L. Xiu, C. P. Shen, W. Khn, R. E. Mitchell, Z. Y. Zhang, S. Nisar, C. J. Tang, Y. Hu, Magnus Wolke, W. L. Yuan, S. Schumann, Q. Ouyang, S. S. Fang, Yao Wang, Y. B. Liu, Y. F. Liang, D. P. Jin, D. Xiao, Y. G. Xie, N. Qin, K. J. Zhu, Z. L. Dou, X. L. Gao, X. Fang, F. Feldbauer, L. D. Liu, C. Dong, S. Sosio, Z. L. Huang, Feng Liu, J. J. Xu, M. Ablikim, X. Y. Jiang, J. S. Huang, C. X. Liu, Y. N. Guo, R. Kliemt, Jie Yu, G. Cibinetto, G. Li, C. D. Fu, C. Q. Feng, X. R. Chen, Z. Y. Deng, M. Ripka, J. Z. Bai, X. P. Xu, X. B. Ji, M. Tiemens, P. Patteri, Xichao Ruan, Yang Li, M. H. Gu, H. Y. Sheng, C. X. Yu, B. Zheng, R. G. Ping, X. K. Chu, Peilian Liu, Lingxuan Zhang, Z. A. Liu, V. Prasad, Y. Ban, P. Weidenkaff, S. P. Wen, X. S. Qin, X. R. Zhou, and Cheng Li

Subjects
Physics, Amplitude, 010308 nuclear & particles physics, 0103 physical sciences, Detector, Pi, Resonance, Atomic physics, 010306 general physics, 01 natural sciences
Abstract

We present an amplitude analysis of the decay D-0 -> K- pi(+)pi(+)pi(-) based on a data sample of 2.93 fb(-1) acquired by the BESIII detector at the psi(3770) resonance. With a nearly background ...

Published
2017

23. Measurement of higher-order multipole amplitudes in ψ(3686)→γχc1,2 with χc1,2→γJ/ψ and search for the transition ηc(2S)→γJ/ψ

Author

J. M. Bian, S. J. Zhao, D. Y. Liu, J. B. Jiao, X. H. Mo, L. S. Wang, M. Maggiora, Ling Zhao, Y. Ding, M. H. Ye, Q. J. Xu, R. Kliemt, X. K. Zhou, Fang Liu, Lei Zhao, Z. L. Hou, H. B. Li, A. G. Denig, B. J. Liu, Jie Yu, G. Felici, Tao Luo, Yunlong Zhang, J. C. Chen, Xuanhong Lou, S. Q. Zhang, K. J. Zhu, C. L. Luo, I. Denysenko, J. Min, G. Cibinetto, L. L. Wang, Nasser Kalantar-Nayestanaki, F. De Mori, Z. T. Sun, H. Cai, C. Morales Morales, Bingxuan Liu, C. C. Zhang, B. X. Yu, B. Zhong, L. B. Guo, D. Bettoni, W. Kühn, G. Li, J. Z. Bai, Jie Zhao, B. Kopf, C. D. Fu, C. Q. Feng, D. X. Lin, X. R. Chen, Y. H. Guan, X. B. Ji, M. Tiemens, Z. Y. Deng, P. Patteri, X. Y. Zhou, Zhi Zeng, H. M. Hu, B. Y. Zhang, Xingguo Li, H. Liang, J. L. Zhang, H. Muramatsu, Ulrich Wiedner, I. B. Nikolaev, Z. A. Liu, K. L. He, C. Z. Yuan, X. N. Ma, Kai Liu, Z. A. Zhu, J. H. Yin, Q. P. Ji, H. J. Li, R. Poling, K. H. Rashid, I. Tapan, Y. H. Yan, S. J. Chen, Z. G. Wang, M. Z. Wang, Y. T. Liang, M. Shao, Y. T. Gu, H. S. Chen, H. Y. Zhang, X. L. Ji, A. Zallo, Jianping Zheng, T. Ma, Q. L. Xiu, S. Zhu, Jimin Zhao, J. W. Zhao, J. W. Zhang, E. H. Thorndike, S. B. Liu, V. Prasad, X. F. Wang, Q. M. Ma, H. L. Dai, Igor Boyko, M. Y. Dong, Y. Ban, P. Weidenkaff, E. Fioravanti, Y. C. Zhu, G. A. Chelkov, Y. Nefedov, G. F. Chen, B. Kloss, X. Liu, C. Leng, H. R. Qi, J. Y. Zhang, Talib Hussain, C. P. Shen, H. Xiao, H. B. Liu, L. Q. Qin, J. J. Liang, M. Bertani, X. Y. Niu, X. L. Kang, A. Sarantsev, A. Calcaterra, Z. G. Zhao, Y. Yuan, Y. S. Zhu, M. Fritsch, Z. H. Wang, S. P. Wen, Z. Haddadi, J. H. Zou, Guangshun Huang, G. Mezzadri, W. C. Yan, L. Yan, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, T. Held, R. Baldini Ferroli, Yu Zhang, L. J. Wu, L. Yang, J. J. Zhang, M. Kavatsyuk, F. Feldbauer, X. S. Qin, X. R. Zhou, H. H. Zhang, G. F. Xu, S. S. Sun, S. Jin, Y. K. Heng, Y. X. Xia, S. H. Zhu, Y. J. Mo, C. F. Redmer, Xiaocong Ai, Serkant Ali Cetin, Q. Ouyang, M. N. Achasov, L. P. Zhou, M. Destefanis, Y. M. Ma, Z. J. Sun, H. Loehner, D. J. Ambrose, S. S. Fang, Q. Liu, Jin Li, L. D. Liu, Z. P. Mao, A. Yuncu, A. Zhemchugov, Y. B. Liu, Cheng Li, S. Qian, X. T. Huang, A. A. Zafar, Cui Li, L. Y. Dong, R. E. Mitchell, G. Rong, W. Gradl, L. L. Ma, Q. An, Jialun Ping, J. Q. Zhang, B. X. Zhang, K. Zhang, M. Ripka, H. P. Cheng, J. Fang, Tao Li, T. Weber, L. Gong, X. N. Li, Y. G. Xie, X. Y. Zhang, P. L. Wang, J. C. Li, L. G. Xia, A. Amoroso, M. Albrecht, D. Y. Wang, M. Qi, Z. Gao, W. J. Zheng, X. C. Chen, X. L. Luo, M. Lara, J. Zhuang, J. B. Liu, H. J. Yang, S. X. Du, Bibo Ke, H. J. Lu, J. G. Lu, W. B. Yan, M. X. Luo, Y. J. Sun, C. Hu, X. Tang, X. Y. Song, X. Fang, I. Uman, Ch. Rosner, A. Dbeyssi, Jian Wei, Yuyi Wang, Yucheng Huang, Haiping Peng, D. V. Dedovich, E. Boger, S. Han, W. D. Li, Y. P. Lu, Xichao Ruan, Z. L. Dou, W. P. Wang, F. E. Maas, T. Hu, M. H. Gu, Liqing Xu, M. Kornicer, F. Bianchi, X. Y. Shen, Z. L. Huang, Feng Liu, Yaquan Fang, S. Pacetti, H. Y. Sheng, A. Julin, M. G. Zhao, R. P. Guo, M. Ablikim, K. Goetzen, J. H. Liu, Ke Li, P. Larin, C. X. Yu, Y. N. Zhang, S. Z. Chen, L. H. Wu, P. X. Shen, Z. Wu, M. Savrie, L. W. Jiang, Ke Wang, Shan Wang, Xiao-Rui Lyu, B. Zheng, R. G. Ping, Zhiqing Zhang, S. Schumann, X. K. Chu, Yao Wang, K. Schoenning, Q. Y. Li, B. S. Zou, P. F. Duan, Peilian Liu, J. J. Xu, X. Y. Gao, L. Xia, Y. B. Li, Lingxuan Zhang, Y. H. Zheng, Zhiyong Zhang, X. L. Gao, Cong-Feng Qiao, O. Albayrak, J. S. Huang, Fenfen An, C. X. Liu, B. L. Wang, N. Yu. Muchnoi, T. C. Zhao, O. Fedorov, G. S. Varner, Magnus Wolke, Y. F. Liang, X. S. Kang, Y. H. Zhang, D. P. Jin, Y. F. Wang, C. Dong, Krisztian Peters, S. Sosio, Dayong Wang, N. Qin, X. Y. Ma, W. X. Gong, Xiaozhong Huang, Andrzej Kupsc, W. L. Yuan, X. H. Sun, M. L. Chen, S. L. Niu, F. Y. Li, X. Q. Li, M. Greco, Joachim Pettersson, Y. N. Guo, M. Ullrich, Z. J. Xiao, K. Y. Liu, Z. B. Li, Z. Y. Wang, P. Kiese, G. R. Liao, J. F. Hu, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, J. F. Sun, S. Marcello, Y. Zeng, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, L. Zotti, F. A. Harris, Chi Zhang, Z. Ning, Zhiqing Liu, X. P. Xu, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, X. Q. Hao, A. Q. Guo, W. M. Song, H. Leithoff, F. Li, F. C. Ma, Z. H. Qin, Y. J. Mao, H. X. Yang, I. Garzia, J. F. Qiu, Huihui Liu, J. P. Liu, L. Fava, J. G. Messchendorp, J. P. Dai, F. Nerling, Qiunan Xu, M. Shi, W. G. Li, X. M. Li, S. Spataro, Lei Li, H. M. Liu, G. F. Cao, Y. X. Yang, A. Hafner, Q. Zhao, Y. Z. Sun, Xiang Zhou, Gang Zhao, J. Y. Liu, Jun-Yi Zhang, Y. P. Guo, Q. Gao, Y. N. Gao, Z. P. Zhang, Y. Zhang, D. W. Bennett, Zujian Wang, J. Z. Fan, Y. B. Zhao, W. Shan, R. Farinelli, J. Dong, Y. Q. Wang, H. L. Ma, D. M. Li, S. Nisar, C. J. Tang, Y. Hu, M. Pelizaeus, B. Wang, D. Xiao, X. Y. Jiang, M. M. Ma, Y. Pan, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, and D. H. Zhang

Subjects
Physics, Amplitude, 010308 nuclear & particles physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, High Energy Physics::Experiment, 010306 general physics, Multipole expansion, 01 natural sciences, Gamma gamma
Abstract

Using 106 x 10(6) psi(3686) events collected with the BESIII detector, we measure multipole amplitudes for the decay psi(3686) ->; gamma chi(c1,2) -> gamma gamma J/psi beyond the dominant electric-dipole amplitudes. The normalized magnetic-quadrupole (M2) amplitude for psi(3686) -> gamma chi(c1,2) -> gamma gamma J/psi and the normalized electric-dipole amplitudes for psi(3686) -> gamma chi(c2) -> gamma J/psi and determined. The M2 amplitudes for psi(3686) -> gamma chi(c1) and ; chi(c1,2) -> gamma J/psi are found to differ significantly from zero and are consistent with theoretical predictions. We also obtain the ratios of M2 contributions of psi(3686) and J/psi decays to;2,chi(c1,2,) b(2)(1/)b(2)(2) = 1.35 +/- 0.72 and a(2)(1/)a(2)(2) = 0.617 +/- 0.083,,which agree well with theoretical expectations. By considering the multipole contributions of chi(c1,2), we measure the product branching fractions for the cascade decays psi(3686) -> gamma chi(c 0,1,2) -> gamma gamma J/psi and search for the process eta(c)(2s) -> gamma J/psi through psi(3686) -> gamma eta(c)(2s).The product branching fraction for psi(3686) -> gamma chi(c0) -> gamma gamma J/psi is 3 sigma larger than published measurements, while those of psi(3686) -> gamma chi(c1,2) -> gamma gamma J/psi are consistent. No significant signal for the decay psi(3686) -> gamma eta(c) (2s) -> gamma gamma J/psi is observed, and the upper limit of the product branching fraction at the 90% confidence level is determined.

Published
2017

24. Amplitude analysis of the χc1→ηπ+π− decays

Author

Z. T. Sun, M. Y. Dong, H. B. Liu, Z. A. Liu, Z. H. Wang, Jin Li, J. H. Zou, J. F. Sun, V. Prasad, S. Marcello, Y. Ban, P. Weidenkaff, F. H. Heinsius, S. S. Sun, P. Musiol, C. F. Redmer, R. Farinelli, Xiaocong Ai, Y. Zeng, H. H. Liu, J. C. Li, S. P. Wen, X. S. Qin, X. R. Zhou, Bingxuan Liu, C. Schnier, J. Zhuang, D. J. Ambrose, M. X. Luo, Yucheng Huang, X. T. Huang, D. V. Dedovich, Z. Ning, G. Li, H. L. Ma, Cheng Li, R. E. Mitchell, M. G. Zhao, D. M. Li, R. P. Guo, G. Rong, X. N. Ma, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, A. Zallo, C. D. Fu, C. Q. Feng, X. R. Chen, Y. N. Zhang, Q. Liu, M. Albrecht, M. Pelizaeus, Z. Y. Deng, M. Maggiora, Ling Zhao, X. Y. Jiang, J. H. Liu, H. B. Li, A. G. Denig, Ke Wang, C. L. Luo, C. C. Zhang, B. Zhong, L. B. Guo, H. Muramatsu, Ulrich Wiedner, M. Kornicer, T. Ma, Lei Zhao, Z. L. Hou, W. D. Li, Xingguo Li, Xichao Ruan, A. Calcaterra, Z. G. Zhao, J. M. Bian, S. J. Zhao, L. L. Ma, R. Kliemt, H. H. Zhang, M. M. Ma, Z. J. Sun, L. Gong, M. H. Gu, H. Loehner, F. Li, C. Hu, A. A. Zafar, Fang Liu, I. Denysenko, S. Ahmed, Y. X. Yang, X. Tang, E. H. Thorndike, Jie Yu, Y. H. Guan, M. Bertani, Kai Liu, H. Y. Sheng, L. G. Xia, A. Amoroso, L. J. Wu, L. Q. Qin, Q. J. Xu, F. C. Ma, C. X. Yu, Z. Haddadi, J. C. Chen, T. J. Min, K. J. Zhu, C. Z. Yuan, K. H. Rashid, F. Feldbauer, Xuanhong Lou, A. Dbeyssi, G. Cibinetto, S. B. Liu, M. Fritsch, Y. J. Mo, C. Leng, X. L. Ji, A. Hafner, B. Y. Zhang, Nasser Kalantar-Nayestanaki, L. Yang, M. Kavatsyuk, C. Morales Morales, Q. Zhao, Y. T. Liang, I. Tapan, Y. Nefedov, Y. Z. Sun, X. C. Chen, P. F. Duan, Y. H. Yan, B. Zheng, R. G. Ping, Xiang Zhou, J. W. Zhao, S. J. Chen, A. Julin, J. Z. Bai, Yue Pan, Zhiqing Liu, Gang Zhao, T. Weber, Y. C. Zhu, A. Q. Guo, Yanwei Wang, S. Han, J. F. Qiu, L. Fava, Chi Zhang, Z. G. Wang, H. Y. Zhang, Y. G. Xie, X. L. Gao, F. De Mori, X. Y. Zhou, W. M. Song, X. B. Ji, M. Tiemens, T. Holtmann, G. F. Chen, S. Qian, Q. An, Jialun Ping, Magnus Wolke, J. Y. Liu, G. S. Huang, X. K. Chu, S. X. Du, Z. L. Dou, Y. F. Liang, P. Patteri, Bibo Ke, T. Johansson, J. F. Chang, B. X. Zhang, C. Dong, S. Sosio, L. H. Wu, J. Y. Zhang, X. H. Mo, L. S. Wang, M. H. Ye, M. Savrie, G. F. Xu, S. Jin, O. B. Kolcu, X. Cai, J. Q. Zhang, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Fenfen An, B. L. Wang, H. Xiao, T. Held, W. B. Yan, S. Pacetti, L. L. Wang, H. Cai, Cui Li, Q. Gao, Y. N. Gao, Y. Zhang, D. P. Jin, N. Yu. Muchnoi, W. Gradl, X. S. Kang, Joachim Pettersson, M. Ripka, J. Chai, G. A. Chelkov, G. X. Sun, J. V. Bennett, Li Yan, X. F. Wang, Q. P. Ji, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. N. Guo, H. J. Lu, J. G. Lu, K. Zhang, X. Y. Zhang, Y. H. Zhang, Liqing Xu, M. Lara, X. Y. Shen, Xiao-Rui Lyu, I. B. Nikolaev, J. Z. Fan, T. C. Zhao, Ke Li, J. B. Liu, Peilian Liu, X. Q. Hao, Q. M. Ma, J. H. Yin, B. Kloss, W. P. Wang, Lingxuan Zhang, X. Y. Niu, Y. Yuan, Y. S. Zhu, G. S. Varner, D. Y. Wang, Yunlong Zhang, Y. K. Heng, Y. J. Sun, E. Boger, Z. H. Qin, Jun-Yi Zhang, F. E. Maas, Z. Y. Wang, D. Bettoni, Y. Ding, Zhiyong Zhang, Y. P. Lu, Yu Zhang, T. Hu, M. Shao, Y. T. Gu, P. L. Wang, Dayong Wang, N. Qin, Y. P. Guo, J. L. Zhang, B. J. Liu, R. Poling, G. R. Liao, W. G. Li, O. Bakina, J. Min, Jianping Zheng, S. Zhu, X. Liu, S. Spataro, X. Y. Song, F. A. Harris, X. P. Xu, Y. Y. Liu, Z. P. Zhang, H. R. Qi, X. Fang, L. Zotti, P. X. Shen, Z. Wu, H. Leithoff, W. Kühn, L. W. Jiang, Z. L. Huang, Serkant Ali Cetin, Lei Li, H. M. Liu, I. Uman, Zhiqing Zhang, Z. Y. You, Z. A. Zhu, J. B. Jiao, J. F. Hu, Feng Liu, B. Kopf, S. Q. Zhang, G. F. Cao, M. Ablikim, Y. J. Mao, H. X. Yang, K. L. He, I. Garzia, E. Fioravanti, J. J. Zhang, J. P. Liu, M. Destefanis, K. Goetzen, J. G. Messchendorp, D. W. Bennett, Zujian Wang, J. P. Dai, Qiunan Xu, M. Shi, C. P. Shen, M. Z. Wang, Jimin Zhao, Z. J. Xiao, X. L. Kang, A. Sarantsev, S. Schumann, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, J. J. Xu, Yao Wang, Xiaozhong Huang, M. Qi, Y. B. Li, H. J. Yang, J. S. Huang, Y. B. Zhao, Andrzej Kupsc, C. X. Liu, L. D. Liu, W. L. Yuan, L. Y. Dong, M. L. Chen, W. Shan, J. Dong, W. J. Zheng, Y. Q. Wang, F. Nerling, S. Nisar, C. J. Tang, Y. Hu, B. Wang, D. Xiao, Jie Zhao, D. X. Lin, Alexey Zhemchugov, H. M. Hu, J. W. Zhang, P. Larin, S. Z. Chen, Z. Gao, S. L. Niu, F. Y. Li, X. Q. Li, Y. F. Long, Y. X. Xia, S. H. Zhu, X. K. Zhou, K. Y. Liu, Z. B. Li, W. Ikegami Andersson, P. Kiese, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, Y. F. Wang, T. Hussain, X. Y. Ma, W. X. Gong, X. H. Sun, Q. A. Malik, G. Mezzadri, W. C. Yan, M. N. Achasov, L. P. Zhou, Y. M. Ma, Z. P. Mao, H. P. Cheng, J. Fang, Tao Li, Ch. Rosner, H. Liang, Yaquan Fang, M. Greco, K. Schoenning, Q. Y. Li, B. S. Zou, Niklaus Berger, G. Felici, H. J. Li, Q. L. Xiu, Q. Ouyang, S. S. Fang, Y. B. Liu, X. L. Luo, F. Bianchi, D. Y. Liu, R. Baldini Ferroli, Krisztian Peters, X. N. Li, Haiping Peng, Tao Luo, B. X. Yu, Zhi Zeng, H. S. Chen, Alperen Yuncu, H. L. Dai, and Igor Boyko

Subjects
Physics, Particle physics, Amplitude, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, Analytical chemistry, Dalitz plot, 010306 general physics, 01 natural sciences
Abstract

Using 448.0 x 10(6) psi(3686) events collected with the BESIII detector, an amplitude analysis is performed for psi(3686) -> gamma chi(c1), chi(c1) ->eta pi(+)pi(-) decays. The most dominant two- body structure observed is a(0)(980)(+/-) pi(-/+); a(0)(980)(+/-) -> eta pi(+/-.) line shape is modeled using a dispersion relation, and a significant nonzero a(0) (980) coupling to the eta'pi channel is measured. We observe chi(c1) -> a(2)(1700)pi production for the first time, with a significance larger than 17 sigma. The production of mesons with exotic quantum numbers, J(PC) = 1(-+), is investigated, and upper limits for the branching fractions chi(c1) -> pi(1)(1400)(+/-)pi(-/+) , chi(c1) -> pi(1)(1600)(+/-)pi(-/+) and chi(c1) -> pi 1(2015)(+/-)pi(-/+) with subsequent pi(1)(X)(+/-) -> eta pi(+/-) decay, are determined.

Published
2017

25. Early factors related to carbohydrate and fat intake at 8 and 12 months: results from the EDEN mother–child cohort

Author

Christine Lange, M.-A. Charles, W L Yuan, Sophie Nicklaus, A. Forhan, Barbara Heude, B. de Lauzon-Guillain, Sandrine Lioret, Centre des Sciences du Goût et de l'Alimentation [Dijon] (CSGA), Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Dietary Survey Unit Nutr Epidemiol OCA EN, Agence Française de Sécurité Sanitaire des Aliments, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS (U1153 / UMR_A_1125 / UMR_S_1153)), Institut National de la Recherche Agronomique (INRA)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM), Didit metaprogramme of INRA Foundation for Medical Research (FRM) National Agency for Research (ANR) National Institute for Research in Public Health (IRESP: TGIR cohorte sante programme) French Ministry of Health (DGS) French Ministry of Research, Inserm Bone and Joint Diseases National Research (PRO-A) Human Nutrition National Research Programmes, Paris-Sud University Nestle French National Institute for Population Health Surveillance (InVS) French National Institute for Health Education (INPES) European Union FP7 programmes (FP7, HELIX, ESCAPE, ENRIECO, Medall projects) Diabetes National Research Programme (French Association of Diabetic Patients (AFD) ANSES Mutuelle Generale de l'Education Nationale (MGEN) French National Agency for Food Security French-speaking association for the study of diabetes and metabolism (ALFEDIAM), Centre des Sciences du Goût et de l'Alimentation [Dijon] ( CSGA ), Institut National de la Recherche Agronomique ( INRA ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), Institut National de la Santé et de la Recherche Médicale ( INSERM ), Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité ( CRESS (U1153 / UMR_A 1125) ), Institut National de la Recherche Agronomique ( INRA ) -Université Sorbonne Paris Cité ( USPC ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), and Centre National de la Recherche Scientifique (CNRS)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)

Subjects
0301 basic medicine, Vitamin, Adult, multivariate-analysis, Calorie, [ SDV.AEN ] Life Sciences [q-bio]/Food and Nutrition, dietary patterns, Medicine (miscellaneous), Physiology, Recommended Dietary Allowances, Cohort Studies, 03 medical and health sciences, chemistry.chemical_compound, Eating, Fat intake, medicine, Dietary Carbohydrates, Humans, Food science, Infant Nutritional Physiological Phenomena, 2. Zero hunger, 030109 nutrition & dietetics, Nutrition and Dietetics, business.industry, infants, Infant, eating habits, Feeding Behavior, Maternal Nutritional Physiological Phenomena, food-intake, Carbohydrate, medicine.disease, Obesity, Dietary Fats, 3. Good health, Diet, Breast Feeding, chemistry, age, principal-components, Cohort, Female, sociodemographic characteristics, business, Energy Intake, energy-intake, Body mass index, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, associations
Abstract

International audience; BACKGROUND/OBJECTIVES: Few studies have examined the factors explaining the variability in fat and carbohydrate intake during infancy. We aimed to describe infants' fat and carbohydrate intake and analyse the associations with infant and maternal characteristics and feeding practices.SUBJECTS/METHODS: This study included 1275 infants aged 8 months from the French EDEN mother-child cohort. Carbohydrate intake, fat intake, added fat (vegetable oils and animal fats) and added sugar (honey, white sugar, brown sugar, jam and sweetened beverages) consumption were calculated at 8 and 12 months. Associations between these variables and infant and maternal characteristics as well as maternal dietary patterns during pregnancy, breast-feeding duration and age at complementary feeding introduction were analysed using multivariable linear and logistic regressions.RESULTS: Less than 5% of non-breast-fed infants reached the recommendation of consuming at least 40% of total energy from fat, whereas more than 95% of them reached 45% of energy from carbohydrates. Overall, infant and maternal characteristics and maternal diet during pregnancy were marginally associated with both carbohydrate/added sugar and fat/added fat intake. Nevertheless, age at complementary feeding introduction was associated with all outcomes.CONCLUSIONS: Our results suggest that only a small proportion of non-breast-fed infants at 8 and 12 months reached the recommendations for fat intake, whereas a majority of them reached the recommendations for carbohydrate intake. As subgroups of infants with a higher risk of inadequate diet were not identified, the present results call for an improved dissemination of information regarding infant-specific dietary fat needs in the entire population.

Published
2017

26. Amplitude Analysis of the Decays η′→π+π−π0 and η′→π0π0π0

Author

H. B. Li, B. Kloss, C. L. Luo, Y. J. Mao, R. Kliemt, H. X. Yang, I. Garzia, C. C. Zhang, Yaquan Fang, Shou-hua Zhu, B. Zhong, L. B. Guo, Lei Li, M. Qi, H. J. Yang, Jie Yu, Fang Liu, C. Hu, Z. Ning, X. Tang, J. P. Liu, H. R. Qi, U. Wiedner, I. Denysenko, Y. P. Guo, Cen Zhang, G. R. Liao, J. G. Messchendorp, T. Ma, Serkant Ali Cetin, Yanping Huang, Xiao-Rui Lyu, B. Q. Wang, T. J. Min, K. J. Zhu, J. B. Jiao, Ke Wang, I. Tapan, Qiunan Xu, Q. Y. Li, B. S. Zou, M. Shi, Y. H. Guan, Y. H. Yan, B. Y. Zhang, G. Cibinetto, H. J. Lu, J. G. Lu, J. W. Zhao, G. Felici, X. K. Zhou, L. G. Xia, S. Qian, Q. An, Jialun Ping, K. Zhang, X. Y. Zhang, Y. C. Zhu, I. B. Nikolaev, J. B. Liu, G. S. Varner, Y. J. Sun, E. Boger, Y. P. Lu, F. Li, F. E. Maas, J. F. Sun, Y. Ding, Xichao Ruan, Yang Li, T. Hu, R. Poling, P. F. Duan, A. Q. Guo, F. C. Ma, H. Xiao, J. H. Yin, A. Calcaterra, Z. G. Zhao, J. Z. Bai, W. M. Song, S. B. Liu, I. Uman, M. H. Gu, Y. Nefedov, Jun-Yi Zhang, Fenfen An, B. J. Liu, B. L. Wang, Yunlong Zhang, T. Held, T. C. Zhao, M. Shao, Y. T. Gu, Mario Greco, X. L. Ji, S. Marcello, Y. Zeng, H. J. Li, W. C. Yan, H. H. Zhang, Manuel Lara, Z. P. Zhang, H. Y. Sheng, Zhe Sun, Bibo Ke, D. Bettoni, J. L. Zhang, W. B. Yan, Z. Gao, S. L. Niu, O. Fedorov, Jie Zhao, Z. A. Zhu, D. X. Lin, Alexey Zhemchugov, H. M. Hu, W. P. Wang, Z. H. Qin, Z. Y. Zhang, J. F. Qiu, M. N. Achasov, Zhiqing Liu, Q. L. Xiu, Z. J. Sun, H. Loehner, J. F. Chang, L. P. Zhou, D. J. Ambrose, C. X. Yu, X. P. Xu, X. B. Ji, L. Fava, Karin Schönning, D. W. Bennett, Zujian Wang, Y. M. Ma, Jianping Zheng, S. Zhu, X. Q. Li, P. X. Shen, Z. Wu, F. H. Liu, Y. B. Chen, E. Fioravanti, Tao Luo, W. G. Li, A. G. Denig, Z. P. Mao, Y. F. Wang, O. B. Kolcu, L. W. Jiang, Xiaofeng Zhu, J. Z. Zhang, M. Ullrich, Z. J. Xiao, F. Nerling, C. P. Shen, B. Zheng, R. G. Ping, L. J. Wu, J. W. Zhang, Y. G. Xie, H. P. Cheng, J. Min, J. Fang, Tao Li, S. Spataro, Y. H. Zheng, Cong-Feng Qiao, Zhiqing Zhang, O. Albayrak, S. X. Du, K. Y. Liu, B. X. Yu, Z. A. Liu, X. L. Kang, A. Sarantsev, J. J. Zhang, M. Destefanis, Zhi Zeng, X. Cai, S. Pacetti, H. B. Liu, Ch. Rosner, M. Albrecht, W. D. Li, M. G. Zhao, R. P. Guo, M. M. Ma, H. M. Liu, P. Patteri, Y. N. Zhang, G. Li, X. Q. Hao, Y. J. Mo, Z. B. Li, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, W. L. Yuan, M. H. Ye, H. S. Chen, F. Y. Li, Z. L. Dou, V. Prasad, X. L. Gao, Q. Ouyang, Y. Ban, P. Weidenkaff, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, J. F. Hu, Tord Johansson, Alperen Yuncu, Jin Li, G. A. Chelkov, Y. X. Yang, Xiaozhong Huang, H. Liang, F. De Mori, P. Larin, S. P. Wen, Q. P. Ji, J. M. Bian, H. L. Dai, G. F. Cao, I. R. Boyko, C. D. Fu, S. S. Fang, S. L. Olsen, X. S. Qin, X. R. Zhou, B. Kopf, S. J. Zhao, C. Q. Feng, X. R. Chen, Z. Y. Wang, Cheng Li, C. Leng, M. Y. Dong, H. H. Liu, S. Z. Chen, J. C. Li, Liqing Xu, X. Y. Shen, P. L. Wang, C. Dong, S. Sosio, Z. Y. Deng, L. Zotti, M. Ripka, G. X. Sun, J. V. Bennett, Li Yan, Y. B. Liu, Z. Jiao, D. H. Zhang, E. H. Thorndike, K. L. He, M. Maggiora, Ling Zhao, T. Hussain, X. Y. Ma, Andrzej Kupsc, R. Baldini Ferroli, X. H. Liu, L. Q. Qin, X. K. Chu, Y. B. Zhao, S. W. Han, H. Y. Chen, X. Y. Zhou, L. Y. Dong, Xingguo Li, W. Shan, J. Dong, J. P. Dai, Jiaxi Liu, Lei Zhao, Z. L. Hou, M. Tiemens, W. X. Gong, J. Zhuang, Q. J. Xu, Joachim Pettersson, Krisztian Peters, M. Z. Wang, X. L. Luo, M. L. Chen, X. C. Chen, F. A. Harris, Jimin Zhao, J. C. Chen, Xuanhong Lou, Peilian Liu, Lingxuan Zhang, X. N. Li, Y. X. Xia, J. Q. Zhang, S. Nisar, C. J. Tang, Nasser Kalantar-Nayestanaki, J. H. Zou, S. Q. Zhang, X. Fang, Y. Hu, W. J. Zheng, C. H. Li, X. H. Sun, X. F. Wang, Haiping Peng, M. X. Luo, C. Z. Yuan, C. Morales Morales, Yue Pan, D. V. Dedovich, Q. M. Ma, D. Xiao, Z. G. Wang, H. Y. Zhang, S. S. Sun, P. Kiese, F. Bianchi, C. F. Redmer, R. A. Briere, F. Feldbauer, Magnus Wolke, X. Y. Niu, Y. Yuan, Y. S. Zhu, Y. F. Liang, G. S. Huang, X. S. Jiang, D. P. Jin, G. F. Chen, Yu Zhang, J. Y. Zhang, N. Qin, Q. Liu, Tristan Weber, L. L. Ma, L. Gong, Z. L. Huang, O. Cakir, Feng Liu, A. Amoroso, Y. K. Heng, M. Bertani, A. Hafner, Q. Zhao, Y. Z. Sun, Z. Haddadi, D. Y. Liu, L. Yang, A. Dbeyssi, M. Kornicer, A. Julin, R. E. Mitchell, Dan Wang, M. Ablikim, X. Y. Jiang, X. H. Mo, W. Gradl, L. S. Wang, D. Y. Wang, Gang Zhao, L. H. Wu, X. N. Ma, L. L. Wang, H. Cai, A. Zallo, M. Savrie, M. Fritsch, X. Y. Gao, M. Kavatsyuk, B. X. Zhang, S. Schumann, Yao Wang, Z. H. Wang, Xiaocong Ai, Y. Q. Wang, X. T. Huang, G. Rong, A. A. Zafar, K. H. Rashid, Y. T. Liang, S. J. Chen, K. J. Li, K. Goetzen, W. Kuehn, L. D. Liu, J. J. Xu, J. S. Huang, C. X. Liu, G. F. Xu, S. Jin, Y. Guo, X. Y. Song, R. Farinelli, H. L. Ma, D. M. Li, H. Muramatsu, M. Pelizaeus, J. Y. Liu, Q. Gao, Y. N. Gao, Y. Zhang, and J. Z. Fan

Subjects
Physics, Amplitude, Meson, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Analytical chemistry, Pi, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Abstract

Based on a sample of 1.31 x 10(9) J/Psi events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays eta' -> pi(+)pi(-)pi(0) and eta' -> pi(0)pi(0)pi(0) is performed. A significant P-wave contribution from eta' -> rho(+/-)eta(-/+) is observed for the first time in eta' -> pi(+)pi(-)pi(0). The branching fraction is determined to be B(eta' -> rho(+/-)pi(-/+)) = (7.44 +/- 0.60 +/- 1.26 +/- 1.84) x 10(-4), where the first uncertainty is statistical, the second systematic, and the third model dependent. In addition to the nonresonant S-wave component, there is a significant sigma meson component. The branching fractions of the combined S-wave components are determined to be B(eta' -> pi(+)pi(-)pi(0))(S) = (37.63 +/- 0.77 +/- 2.22 +/- 4.48) x 10(-4) and B(eta' -> pi(0)pi(0)pi(0)) = (35.22 +/- 0.82 +/- 2.54) x 10(-4), respectively. The latter one is consistent with previous BESIII measurements.

Published
2017

27. Measurement of integrated luminosity and center-of-mass energy of data taken by BESIII at

Author

J. F. Sun, S. Marcello, Y. Zeng, J. F. Chang, S. Han, J. Min, Zhiqing Liu, Magnus Wolke, Y. F. Liang, D. P. Jin, L. H. Wu, B. Kopf, Xiaofeng Zhu, J. Z. Zhang, M. Savrie, Orhan Cakir, P. Kiese, K. L. He, N. Yu. Muchno, K. Goetzen, Yaquan Fang, L. Xia, S. L. Olsen, Y. X. Xia, S. H. Zhu, Dayong Wang, N. Qin, L. J. Wu, Y. J. Mo, H. Y. Shen, R. Farinelli, X. S. Jiang, X. Q. Hao, S. Schumann, G. Cibinetto, Bibo Ke, Q. Ouyang, F. De Mori, H. S. Chen, T. Weber, X. Liu, H. R. Qi, Serkant Ali Cetin, Yao Wang, H. L. Ma, Xiao-Rui Lyu, Xiaozhong Huang, S. S. Fang, Y. B. Liu, H. L. Dai, Jie Zhao, D. X. Lin, M. Albrecht, G. R. Liao, J. F. Hu, X. Y. Zhou, R. Kliemt, X. Y. Jiang, M. M. Ma, J. C. Chen, P. R. Li, G. S. Varner, G. Cheng, Q. P. Ji, Liqing Xu, J. H. Liu, A. Dbeyssi, Ke Wang, W. B. Yan, Giulietto Felici, S. Pacetti, Jin Li, Y. J. Mao, H. X. Yang, I. Garzia, D. M. Li, H. M. Hu, Q An, X. F. Wang, Q. M. Ma, Jie Yu, T. J. Min, Zahra Haddadi, S. L. Niu, F. Y. Li, Andrzej Kupsc, W. L. Yuan, Peilian Liu, Lingxuan Zhang, B. Kloss, X. Y. Niu, Y. Pan, J. Chai, G. X. Sun, K. J. Zhu, X. Q. Li, Y. F. Long, M. Greco, Y. Yuan, Y. S. Zhu, M. Bertani, Z. Jiao, Fu-Hu Liu, D. H. Zhang, L. Zotti, X. Y. Shen, J. W. Zhang, M. Pelizaeus, S. Qian, Jialun Ping, A. Amoroso, K. Zhang, X. Y. Zhang, M. Lara, J. B. Liu, Y. J. Sun, Q. Liu, X. D. Ruan, Y. P. Lu, L. L. Ma, L. Gong, Jun-Yi Zhang, Y. P. Guo, P. F. Duan, Zhiyong Zhang, Chi Zhang, P. L. Wang, Y. Ding, L. G. Xia, B. J. Liu, S. Jin, G. F. Cao, Z. P. Zhang, D. Y. Liu, J. B. Jiao, S. Q. Zhang, C. Leng, Guangshun Huang, L. Yan, H. P. Chen, S. Ahmed, Y. X. Yang, A. A. Zafar, X. Fang, D. Bettoni, X. L. Ji, W. Kühn, K. Y. Liu, H. B. Li, Y. H. Guan, M. Y. Dong, Z. B. Li, D. W. Bennett, Zujian Wang, Tord Johansson, M. Tiemens, Z. Y. You, Z. A. Zhu, B. L. Wang, R. A. Briere, A. Julin, Y. F. Wang, Y. Guo, J. V. Bennett, Z. L. Huang, K. H. Rashid, Z. Ning, Feng Liu, I. Uman, Y. H. Zheng, Cong-Feng Qiao, K. Schoenning, Q. Y. Li, B. S. Zou, O. Albayrak, C. P. Shen, H. J. Li, X. B. Ji, Y. B. Zhao, H. B. Liu, W. Shan, I. Tapan, J. Dong, A. Yun, Kai Liu, Q. L. Xiu, T. C. Zhao, T. Hussain, M. G. Zhao, R. P. Guo, M. Z. Wang, Y. H. Yan, Yanwei Wang, C. L. Luo, P. Patteri, Y. Q. Wang, Jimin Zhao, Klaus Peters, X. Y. Ma, W. X. Gong, Y. T. Liang, X. S. Kang, S. Nisar, Huihui Liu, Y. G. Xie, J. P. Liu, C. J. Tang, Y. Hu, J. H. Zou, X. Y. Song, F. Bianchi, X. L. Luo, J. W. Zhao, M. H. Gu, Y. H. Zhang, F. A. Harris, Niklaus Berger, O. Fedorov, Bingxuan Liu, Y. Nefedov, Y. N. Zhang, X. Cai, S. X. Du, G. Li, P. Larin, S. J. Chen, A. Hafner, M. Ablikim, Q. Zhao, Dmitri Dedovich, Z. L. Dou, B. Wang, Y. Z. Sun, C. C. Zhang, S. S. Sun, S. Z. Chen, Tao Luo, D. Xiao, J. J. Xu, Z. J. Xiao, M. Maggiora, Ling Zhao, W. P. Wang, Lei Zhao, Z. Y. Wang, Yi Chen, C. D. Fu, X. K. Chu, C. Q. Feng, X. R. Chen, J. G. Messchendorp, Qiunan Xu, M. Shi, C. X. Yu, H. Leithoff, F. Li, B. Zhong, L. B. Guo, E. H. Thorndike, J. M. Bian, X. H. Sun, S. J. Zhao, Z. L. Hou, X. N. Ma, Y. C. Zhu, B. X. Yu, Zhi Zeng, J. Q. Zhang, Xiang Zhou, H. Cai, Xingguo Li, Y. B. Li, A. Zallo, L. Q. Qin, J. Z. Bai, F. Feldbauer, F. C. Ma, Gang Zhao, B. Zheng, R. G. Ping, F. F. An, Z. T. Sun, J. S. Huang, C. X. Liu, Z. H. Wang, H. Muramatsu, W. G. Li, X. C. Chen, Q. A. Malik, G. Mezzadri, W. C. Yan, C. Z. Yuan, Y. Ban, T. Holtmann, H. J. Lu, J. G. Lu, Igor Boyko, Z. A. Liu, J. Y. Liu, J. F. Qiu, M. Fritsch, V. Prasad, Ulrich Wiedner, P. Musiol, Q. J. Xu, R. E. Mitchell, C. F. Redmer, Xiaocong Ai, M. Kornicer, M. Kavatsyuk, P. Weidenkaff, F. H. Heinsius, L. Fava, Yu Zhang, F. Nerling, M. N. Achasov, F. E. Maas, T. Hu, S. Spataro, X. P. Xu, Y. Y. Liu, C. Schnier, Nasser Kalantar-Nayestanaki, C. Morales Morales, S. P. Wen, K. Li, X. T. Huang, X. S. Qin, X. R. Zhou, X. K. Zhou, Fang Liu, T. Ma, L. Yang, R. Baldini Ferroli, Cheng Li, L. P. Zhou, Y. M. Ma, H. Xiao, E. Boger, T. Held, Q. Gao, Y. N. Gao, I. Denysenko, Y. Zhang, G. Rong, B. X. Zhang, Z. G. Wang, P. X. Shen, J. Z. Fan, A. Zhemchugov, H. Y. Zhang, Lei Li, Z. Wu, H. M. Liu, Z. Y. Deng, L. W. Jiang, Z. P. Mao, O. B. Kolcu, Gueorgui Chelkov, X. N. Li, Haiping Peng, X. C. Lou, Zhiqing Zhang, J. C. Li, B. Y. Zhang, J. Fang, Tao Li, Z. Gao, A. Calcaterra, Ch. Rosner, W. Gradl, D. J. Ambrose, J. Zhuang, H. Liang, M. Ripka, I. B. Nikolaev, W. M. Song, J. Y. Zhang, A. Denig, D. Y. Wang, M. X. Luo, M. Qi, Yucheng Huang, H. J. Yang, Z. H. Qin, Y. K. Heng, W. D. Li, M. L. Chen, J. P. Dai, Cui Li, Z. G. Zhao, S. B. Liu, H. H. Zhang, Z. J. Sun, H. Loehner, C. Hu, X. Tang, Yunlong Zhang, J. L. Zhang, R. Poling, Jianping Zheng, S. Zhu, X. H. Mo, L. S. Wang, M. H. Ye, J. J. Zhang, M. Destefanis, X. L. Gao, L. L. Wang, C. Dong, S. Sosio, Joachim Pettersson, L. D. Liu, L. Y. Dong, G. F. Xui, W. J. Zheng, Q. Guo, J. H. Yin, M. Shao, Y. T. Gu, E. Fioravanti, X. L. Kang, A. Sarantsev, D. H. Wei, J. S. Lange, and Q. W. Zhao

Subjects
Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, ddc:530, Nuclear Experiment, 010306 general physics, Collider, Instrumentation, Astrophysics::Galaxy Astrophysics, Bhabha scattering, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Detector, Astronomy and Astrophysics, Collision, Data set, High Energy Physics::Experiment, Center of mass, Astrophysics::Earth and Planetary Astrophysics, Energy (signal processing)
Abstract

Chinese physics / C 41(11), 113001 (2017). doi:10.1088/1674-1137/41/11/113001, To study the nature of the state $Y(2175)$, a dedicated data set of $e^+e^-$ collision data was collected at the center-of-mass energy of 2.125 GeV with the BESIII detector at the BEPCII collider. By analyzing large-angle Bhabha scattering events, the integrated luminosity of this data set is determined to be $108.49\pm0.02\pm0.85$ pb$^{-1}$, where the first uncertainty is statistical and the second one is systematic. In addition, the center-of-mass energy of the data set is determined with radiative dimuon events to be $2126.55\pm0.03\pm0.85$ MeV, where the first uncertainty is statistical and the second one is systematic., Published by IOP Publ., Bristol [u.a.]

Published
2017

28. Measurements of the absolute branching fractions forDs+→ηe+νeandDs+→η′e+νe

Author

H. J. Lu, J. G. Lu, Xiangdong Ruan, S. L. Niu, Q. Liu, Lei Zhao, F. Y. Li, X. Q. Li, Y. F. Long, L. L. Ma, L. Gong, L. Fava, F. E. Maas, M. Greco, T. Hu, A. Amoroso, O. Bakina, W. G. Li, P. L. Wang, X. L. Luo, A. Dbeyssi, J. H. Yin, Q. P. Ji, Y. J. Sun, P. X. Shen, Y. T. Gu, S. Spataro, X. P. Xu, Y. Y. Liu, K. Y. Liu, W. P. Wang, F. Bianchi, Z. L. Huang, Feng Liu, X. L. Ji, S. Ahmed, Y. X. Yang, Z. Wu, Zhigang Wang, L. W. Jiang, Lei Li, Z. B. Li, W. Ikegami Andersson, E. Fioravanti, M. Ablikim, G. A. Chelkov, L. J. Wu, Jun-Yi Zhang, A. Julin, Y. P. Guo, Zhiqing Zhang, X. Q. He, X. L. Gao, Jin Li, A. Zallo, X. L. Kang, A. Sarantsev, D. H. Wei, Q. Ouyang, Y. J. Mo, D. Liu, S. S. Fang, Y. B. Liu, Q. L. Xiu, G. F. Cao, J. S. Lange, Q. W. Zhao, A. Hafner, Q. Zhao, Zhe Zeng, P. Kiese, Y. Pan, M. H. Ye, H. H. Liu, Jia Xu, Y. Z. Sun, L. Zotti, Cheng Li, C. Hu, Xiang Zhou, X. Tang, F. De Mori, D. W. Bennett, Zujian Wang, X. A. Xiong, Z. T. Sun, M. Qi, Y. X. Xia, J. C. Li, S. L. Olsen, A. Yuncu, R. A. Briere, Yaquan Fang, Z. A. Liu, Zhiqing Liu, W. C. Yan, Jie Liu, L. D. Liu, X. N. Ma, I. Tapan, X. Y. Zhou, Gang Zhao, Y. T. Liang, Y. G. Xie, J. Zhuang, T. Weber, M. Shao, A. A. Zafar, S. B. Liu, Ke Wang, X. S. Jiang, Y. H. Guan, C. Leng, X. C. Lou, L. Y. Dong, M. X. Luo, Y. H. Yan, V. Prasad, S. X. Du, Y. Ban, T. Johansson, J. F. Chang, H. J. Yang, Z. G. Zhao, J. W. Zhao, W. J. Zheng, Yucheng Huang, D. V. Dedovich, Z. L. Dou, T. Holtmann, P. L. Li, G. Rong, P. Weidenkaff, F. H. Heinsius, W. M. Song, Y. C. Zhu, Kai Liu, X. F. Wang, K. H. Rashid, P. F. Duan, K. Schoenning, Q. Y. Li, Y. B. Zhao, O. Cakir, O. B. Kolcu, M. Fritsch, X. Cai, Q. M. Ma, Liqing Xu, X. Y. Shen, G. F. Xu, Klaus Peters, F. A. Harris, S. P. Wen, B. L. Wang, X. S. Qin, Q. Gao, Y. N. Gao, S. Jin, B. Kloss, W. Shan, Niklaus Berger, K. J. Zhu, Y. F. Wang, J. Z. Bai, J. Q. Zhang, E. H. Thorndike, M. Kavatsyuk, X. Y. Niu, T. Held, Y. Zhang, T. C. Zhao, Y. Yuan, Y. S. Zhu, Chi Zhang, M. G. Zhao, X. Q. Hao, S. J. Chen, R. P. Guo, Jie Zhao, D. X. Lin, H. M. Hu, H. Leithoff, G. S. Huang, Zhenghao Zhang, Z. H. Qin, Y. Nefedov, A. Zhemchugov, Y. Guo, Jia-Jia Qin, Jia-ju Zhang, Xiao-Rui Lyu, Y. Ding, B. S. Zou, I. B. Nikolaev, Y. Q. Wang, T. Hussain, F. C. Ma, X. Y. Ma, O. Dorjkhaidav, S. Nisar, C. J. Tang, Y. Hu, Y. P. Lu, D. J. Ambrose, Tao Luo, B. X. Zhang, Z. Ning, S. Han, Y. J. Mao, J. B. Liu, X. K. Chu, H. X. Yang, W. X. Gong, A. Calcaterra, S. Fegan, X. Y. Song, F. Feldbauer, I. Garzia, B. J. Liu, B. X. Yu, G. S. Varner, A. Q. Guo, D. Bettoni, X. H. Mo, Dan Wang, H. P. Peng, J. L. Zhang, R. Farinelli, M. Bertani, R. Poling, L. H. Wu, M. Savrie, D. Xiao, Cui Li, H. H. Zhang, Z. Haddadi, H. L. Ma, W. Kühn, Z. Y. You, X. Fang, M. Albrecht, S. H. Zhu, Z. A. Zhu, L. S. Wang, X. B. Ji, Jianping Zheng, J. P. Liu, J. F. Sun, J. F. Qiu, X. C. Chen, S. Zhu, S. Schumann, H. S. Chen, D. M. Li, Z. J. Sun, H. Loehner, B.Y. Wang, H. Xiao, L. Yang, Yao Wang, J. M. Bian, Zhenyu Zhang, S. J. Zhao, S. Marcello, Y. Zeng, P. Patteri, W. D. Li, Peilian Liu, X. Y. Jiang, Lingxuan Zhang, X. H. Sun, Jianhao Zhang, K. Goetzen, J. G. Messchendorp, M. Pelizaeus, H. L. Dai, Igor Boyko, L. L. Wang, H. Cai, Q. A. Malik, G. Mezzadri, M. M. Ma, J. P. Dai, F. Nerling, I. Uman, Bingxuan Liu, H. B. Li, M. Shi, J. Chai, W. Gradl, J. C. Chen, C. P. Shen, G. Cibinetto, X. R. Zhou, Yu Zhang, M. Destefanis, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, R. Baldini Ferroli, G. Li, M. Ripka, A. G. Denig, C. L. Luo, L. P. Zhou, Nasser Kalantar-Nayestanaki, P. Musiol, B. Y. Zhang, D. Y. Wang, C. C. Zhang, C. Morales Morales, Q. J. Xu, Y. M. Ma, Z. P. Mao, M. H. Gu, C. D. Fu, C. Dong, S. Sosio, P. Larin, J. Min, C. F. Redmer, Xiaocong Ai, B. Zhong, L. B. Guo, X. R. Chen, C. Schnier, X. T. Huang, Z. G. Wang, H. Y. Zhang, X. N. Li, Z. Y. Deng, Haiwen Liu, H. P. Cheng, L. Xia, J. Fang, Tao Li, Joachim Pettersson, B. Kopf, J. Liu, W. B. Yan, C. X. Yu, K. L. He, G. X. Sun, J. V. Bennett, H. Muramatsu, Xingguo Li, Ulrich Wiedner, Y. H. Zheng, Cong-Feng Qiao, G. F. Chen, X. K. Zhou, O. Albayrak, D. H. Zhang, Ch. Rosner, R. Kliemt, Z. Jiao, Fu-Hu Liu, C. Q. Feng, M. Z. Wang, Jimin Zhao, R. G. Ping, G. R. Liao, J. F. Hu, J. Y. Zhang, Jie Yu, Y. B. Li, N. Yu. Muchnoi, B. Zheng, X. S. Kang, Y. H. Zhang, M. Kornicer, T. Ma, Z. Gao, J. S. Huang, C. X. Liu, T. J. Min, Y. K. Heng, Z. Y. Wang, L. Yan, Y. T. Zhang, M. Maggiora, Ling Zhao, Z. L. Hou, H. Y. Sheng, C. Z. Yuan, X. Liu, H. R. Qi, Z. J. Xiao, Serkant Ali Cetin, J. B. Jiao, Jianmin Dong, S. Q. Zhang, Fang Liu, Q. An, I. Denysenko, S. Qian, Jialun Ping, K. Zhang, X. Y. Zhang, M. Lara, E. Boger, Hao-Lin Li, M. Y. Dong, M. Tiemens, H. B. Liu, J. H. Zou, S. S. Sun, R. E. Mitchell, Bibo Ke, M. N. Achasov, Giulietto Felici, S. Pacetti, Ke Li, H. Liang, P. L. Chen, F. F. An, Magnus Wolke, Y. F. Liang, D. P. Jin, Dayong Wang, N. Qin, Xiaozhong Huang, Andrzej Kupsc, W. L. Yuan, and M. L. Chen

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Atomic physics, Nuclear Experiment, 010306 general physics, Branching (polymer chemistry), 01 natural sciences
Abstract

By analyzing 482 pb(-1) of e(+)e(-) collision data collected at root s = 4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays D-s(+) -> eta e(+)nu(e) and D-s(+) -> eta ' e(+)nu(e) to be B(D-s(+) -> eta e(+)nu(e)) = (2.30 +/- 0.31 +/- 0.08)% and B(D-s(+) -> eta ' e(+)nu(e)) = (0.93 +/- 0.30 +/- 0.05)%, respectively, and their ratio B(D-s(+) -> eta ' e(+)nu(e)) / B(D-s(+) -> eta ' e(+)nu(e)) = 0.40 +/- 0.14 +/- 0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the eta-eta' mixing angle and improve upon the D-s(+) semileptonic branching ratio precision.

Published
2016

29. Measurement of Singly Cabibbo Suppressed Decays Λc+→pπ+π− and Λc+→pK+K−

Author

L. J. Wu, Y. J. Mo, L. Q. Qin, F. Feldbauer, Y. H. Guan, Kai Liu, Y. Nefedov, X. C. Chen, Tao Luo, M. Y. Dong, M. Tiemens, H. B. Liu, B. X. Yu, H. S. Chen, T. Weber, Zhi Zeng, H. L. Dai, Igor Boyko, M. H. Ye, Krisztian Peters, F. De Mori, J. H. Zou, X. Y. Zhou, S. S. Sun, Guangshun Huang, L. Yan, G. R. Liao, J. F. Hu, R. E. Mitchell, Q. P. Ji, L. D. Liu, L. Y. Dong, Bingxuan Liu, Cui Li, Liqing Xu, X. Y. Shen, Z. G. Wang, H. Y. Zhang, G. A. Chelkov, G. Li, W. J. Zheng, G. F. Xu, S. Jin, X. F. Wang, Y. X. Xia, S. H. Zhu, L. Xia, G. F. Chen, F. Nerling, C. D. Fu, Z. T. Sun, Z. A. Liu, Y. Guo, Q. M. Ma, B. Kloss, C. Q. Feng, X. R. Chen, J. Y. Zhang, Z. Y. Deng, X. Y. Song, V. Prasad, X. Y. Niu, Y. Yuan, Y. S. Zhu, Y. K. Heng, Yaquan Fang, J. M. Bian, Zhenyu Zhang, S. J. Zhao, Xingguo Li, Y. Ban, P. Weidenkaff, F. H. Heinsius, J. C. Chen, Xuanhong Lou, Nasser Kalantar-Nayestanaki, I. B. Nikolaev, J. H. Yin, M. Shao, Y. T. Gu, C. Morales Morales, J. Z. Bai, S. P. Wen, X. S. Qin, X. R. Zhou, Cheng Li, Jin Li, P. L. Li, Bibo Ke, E. Fioravanti, W. B. Yan, K. Schoenning, Q. Y. Li, B. S. Zou, M. N. Achasov, Chi Zhang, Niklaus Berger, H. H. Liu, J. C. Li, M. G. Zhao, R. P. Guo, X. L. Kang, Giulietto Felici, S. Pacetti, X. B. Ji, A. Sarantsev, D. H. Wei, J. S. Lange, Q. W. Zhao, Y. N. Zhang, J. Zhuang, F. Li, F. C. Ma, A. A. Zafar, M. X. Luo, Ke Li, P. Patteri, M. Maggiora, Ling Zhao, H. Liang, Yucheng Huang, D. V. Dedovich, Y. Ding, X. K. Zhou, Fang Liu, B. J. Liu, Lei Zhao, Z. L. Hou, I. Denysenko, K. H. Rashid, Xiao-Rui Lyu, X. H. Mo, L. S. Wang, B. Y. Zhang, J. F. Qiu, Y. T. Liang, G. S. Varner, W. Kühn, H. B. Li, A. G. Denig, C. L. Luo, Z. Y. You, Z. A. Zhu, L. L. Wang, H. Cai, C. Z. Yuan, S. J. Chen, C. C. Zhang, B. Zhong, L. B. Guo, X. Fang, Y. H. Zheng, Cong-Feng Qiao, J. J. Xu, H. Muramatsu, O. Albayrak, N. Yu. Muchnoi, Z. L. Huang, Ulrich Wiedner, Feng Liu, C. P. Shen, J. F. Sun, M. Kornicer, X. S. Kang, S. Qian, Z. H. Wang, P. Kiese, Y. B. Li, Jialun Ping, X. L. Ji, S. L. Olsen, Xiangdong Ruan, T. Ma, Y. H. Zhang, J. S. Huang, C. X. Liu, M. Ablikim, Q. Liu, K. Zhang, X. Y. Zhang, S. Marcello, R. A. Briere, Y. Zeng, P. Musiol, C. F. Redmer, Xiaocong Ai, C. Schnier, X. S. Jiang, L. L. Ma, Z. Y. Wang, Z. G. Zhao, S. Fegan, A. Zallo, X. K. Chu, M. Lara, X. T. Huang, Zhiqing Liu, G. Rong, L. Gong, Y. B. Chen, L. G. Xia, A. Amoroso, Jie Zhao, D. X. Lin, K. Goetzen, Alexey Zhemchugov, H. M. Hu, J. B. Liu, Yanwei Wang, A. Q. Guo, H. H. Zhang, Xiaofeng Zhu, J. Z. Zhang, Y. J. Sun, P. L. Wang, Z. J. Sun, H. Loehner, A. Dbeyssi, D. J. Ambrose, J. Chai, Y. G. Xie, J. W. Zhang, T. Johansson, J. F. Chang, W. M. Song, S. X. Du, O. Cakir, Peilian Liu, Y. F. Wang, R. Kliemt, Lingxuan Zhang, Y. P. Lu, A. Julin, I. Uman, O. B. Kolcu, Z. L. Dou, X. Cai, S. Schumann, W. P. Wang, Jie Yu, T. Hussain, Z. H. Qin, Yao Wang, F. A. Harris, X. Y. Ma, W. X. Gong, X. Q. Hao, M. H. Gu, T. J. Min, K. J. Zhu, Y. J. Mao, Z. Ning, P. Larin, H. X. Yang, I. Garzia, M. Albrecht, H. Leithoff, H. Y. Sheng, C. X. Yu, W. D. Li, X. H. Sun, J. P. Liu, J. G. Messchendorp, X. N. Ma, B. Zheng, R. G. Ping, S. L. Niu, J. P. Dai, F. Y. Li, X. Q. Li, Y. F. Long, M. Greco, Qiunan Xu, M. Shi, W. G. Li, X. Liu, I. Tapan, M. Fritsch, H. R. Qi, S. Spataro, X. P. Xu, K. Y. Liu, Y. Y. Liu, Y. H. Yan, Z. J. Xiao, J. W. Zhao, M. Kavatsyuk, Serkant Ali Cetin, Lei Li, H. M. Liu, Z. B. Li, W. Ikegami Andersson, Y. C. Zhu, G. F. Cao, D. Y. Liu, J. B. Jiao, B. X. Zhang, S. Q. Zhang, H. Xiao, E. Boger, T. Held, S. Han, Si Chen, C. Leng, L. H. Wu, M. Savrie, J. Q. Zhang, H. J. Lu, J. G. Lu, L. Fava, F. E. Maas, T. Hu, O. Bakina, P. X. Shen, Z. Wu, L. W. Jiang, Zhiqing Zhang, X. Y. Jiang, M. M. Ma, P. R. Li, Y. Pan, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, D. H. Zhang, J. Min, B. Kopf, K. L. He, M. Z. Wang, Jimin Zhao, M. Qi, H. J. Yang, Y. B. Zhao, W. Shan, J. Dong, Y. Q. Wang, S. Nisar, C. J. Tang, Y. Hu, S. B. Liu, M. Bertani, Z. Haddadi, B. Wang, D. Xiao, L. Yang, Jun-Yi Zhang, Y. P. Guo, L. Zotti, Z. P. Zhang, D. W. Bennett, Zujian Wang, C. Hu, W. Gradl, X. L. Luo, M. Ripka, X. Tang, D. Y. Wang, A. Yuncu, F. Bianchi, S. Ahmed, Y. X. Yang, A. Hafner, Q. Zhao, Y. Z. Sun, Xiang Zhou, Gang Zhao, Yunlong Zhang, D. Bettoni, J. L. Zhang, R. Poling, Jianping Zheng, S. Zhu, R. Farinelli, H. L. Ma, D. M. Li, J. J. Zhang, M. Destefanis, M. Pelizaeus, T. Holtmann, J. Y. Liu, Q. Ouyang, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, S. S. Fang, Y. B. Liu, J. Z. Fan, G. Cibinetto, R. Baldini Ferroli, Q. J. Xu, H. J. Li, Q. L. Xiu, C. Dong, S. Sosio, X. N. Li, Haiping Peng, Joachim Pettersson, J. H. Liu, Ke Wang, P. F. Duan, Fenfen An, Xian Gao, B. L. Wang, T. C. Zhao, Xiaozhong Huang, Andrzej Kupsc, W. L. Yuan, M. L. Chen, A. Calcaterra, Q. A. Malik, G. Mezzadri, W. C. Yan, Yu Zhang, Magnus Wolke, L. P. Zhou, Y. F. Liang, D. P. Jin, Y. M. Ma, Z. P. Mao, H. P. Cheng, Dayong Wang, N. Qin, J. Fang, Tao Li, Z. Gao, Ch. Rosner, and E. H. Thorndike

Subjects
Physics, Nuclear physics, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Pi, Analytical chemistry, General Physics and Astronomy, High Energy Physics::Experiment, 010306 general physics, Lambda, 01 natural sciences
Abstract

Using 567 pb(-1) of data collected with the BESIII detector at a center-of-mass energy of root s = 4.599 GeV, near the Lambda(+)(c)->(Lambda) over bar (-)(c) threshold, we study the singly Cabibbo-suppressed decays Lambda c(+) -> p pi(+) pi(-) and Lambda(+)(c) -> pK(+) K- By normalizing with respect to the Cabibbo-favored decay Lambda(+)(c)-> p pi(+)pi(-) we obtain ratios of branching fractions: [B(Lambda(+)(c) -> p pi(+)pi(-))/B(Lambda(+)(c) -> pK(-)pi(+))] = (6.70 +/- 0.48 +/- 0.25)% [B Lambda(+)(c) -> p phi)/B(Lambda(+)(c) -> pK(-)pi(+))] = (1.81 +/- 0.33 +/- 0.13)%,and [B(Lambda(+)(c) -> pK(+)K(non-phi)(-)/B(Lambda(+)(c) -> pK(-)pi(+))] (9.36 +/- 2.22 +/- 0.71)x10(-3), where the uncertainties are statistical and systematic, respectively. The absolute branching fractions are also presented. Among these measurements, the decay Lambda(+)(c) -> p pi(+)pi(-) is observed for the first time, and the precision of the branching fraction for Lambda(+)(c) -> pK(+)K(non-phi)(-) and Lambda(+)(c) -> p phi is significantly improved.

Published
2016

30. Measurement of theDs+→ℓ+νℓbranching fractions and the decay constantfDs+

Author

Y. H. Guan, L. Xia, G. F. Chen, X. C. Lou, Kai Liu, W. G. Li, J. Min, J. Y. Zhang, Xiangdong Ruan, J. H. Liu, S. Spataro, X. P. Xu, Q. Liu, B. Kopf, I. B. Nikolaev, Y. Nefedov, Ke Wang, J. H. Yin, Lei Li, H. M. Liu, K. H. Rashid, L. L. Ma, L. Gong, R. Kliemt, Y. K. Heng, M. Shao, Y. T. Gu, J. J. Xu, K. L. He, Y. B. Li, H. Liang, Q. P. Ji, L. G. Xia, A. Amoroso, G. F. Cao, Jie Yu, Bibo Ke, J. S. Huang, H. J. Li, E. Fioravanti, P. F. Duan, W. B. Yan, Cui Li, C. X. Liu, M. Z. Wang, Jimin Zhao, Fenfen An, Q. L. Xiu, M. N. Achasov, A. Dbeyssi, I. Uman, Yunlong Zhang, Giulietto Felici, D. Bettoni, Y. Ding, B. L. Wang, A. Q. Guo, B. J. Liu, X. L. Kang, A. Sarantsev, Y. H. Zheng, Cong-Feng Qiao, S. Pacetti, T. J. Min, K. J. Zhu, Jin Li, D. H. Wei, O. Albayrak, J. S. Lange, J. L. Zhang, Q. W. Zhao, M. H. Gu, T. C. Zhao, R. Poling, M. Kornicer, M. H. Ye, Jianping Zheng, W. M. Song, N. Yu. Muchnoi, S. Z. Chen, S. Zhu, X. S. Kang, H. Y. Sheng, Ke Li, P. Larin, A. Julin, C. X. Yu, A. Calcaterra, Z. G. Zhao, Tao Luo, Z. H. Wang, L. D. Liu, W. Kühn, Y. H. Zhang, W. P. Wang, M. G. Zhao, R. P. Guo, Z. H. Qin, L. Y. Dong, Guangshun Huang, C. Leng, J. J. Zhang, F. De Mori, M. Y. Dong, Y. N. Zhang, K. Goetzen, B. Zheng, R. G. Ping, Z. A. Zhu, Y. J. Mao, M. Destefanis, H. X. Yang, J. Z. Bai, M. Tiemens, W. J. Zheng, L. Yan, B. X. Yu, Zhi Zeng, L. Zotti, C. Hu, A. Zallo, D. Y. Liu, J. B. Jiao, X. Tang, X. K. Chu, I. Garzia, H. B. Liu, J. M. Bian, Zhenyu Zhang, S. J. Zhao, W. C. Yan, X. Y. Zhou, J. H. Zou, Z. Y. Wang, M. Bertani, Z. Haddadi, Y. X. Xia, S. H. Zhu, Yu Zhang, L. Yang, A. Yuncu, H. S. Chen, J. P. Liu, S. S. Sun, Z. J. Sun, H. Loehner, L. P. Zhou, J. G. Messchendorp, E. H. Thorndike, J. P. Dai, C. P. Shen, L. J. Wu, C. F. Redmer, Xiaocong Ai, X. B. Ji, H. L. Dai, Igor Boyko, Y. M. Ma, H. H. Zhang, Peilian Liu, X. F. Wang, J. C. Chen, Qiunan Xu, M. Shi, Lingxuan Zhang, Z. P. Mao, S. Q. Zhang, L. Q. Qin, J. Q. Zhang, H. P. Cheng, F. Feldbauer, Y. J. Mo, Nasser Kalantar-Nayestanaki, R. E. Mitchell, P. Patteri, J. Fang, Tao Li, X. H. Mo, L. S. Wang, Q. M. Ma, C. Morales Morales, B. Kloss, Z. T. Sun, X. K. Zhou, Fang Liu, Z. Gao, X. Y. Niu, X. C. Chen, Ch. Rosner, H. J. Lu, J. G. Lu, Bingxuan Liu, Z. A. Liu, Y. Yuan, C. Dong, Y. S. Zhu, X. T. Huang, L. L. Wang, H. Cai, I. Denysenko, V. Prasad, Jie Zhao, D. X. Lin, M. Maggiora, Ling Zhao, Y. B. Zhao, S. Sosio, A. A. Zafar, G. Rong, H. M. Hu, T. Weber, G. Cibinetto, H. B. Li, W. Gradl, M. Ripka, G. Li, R. Baldini Ferroli, F. E. Maas, Y. Ban, P. Weidenkaff, A. G. Denig, Yaquan Fang, C. L. Luo, S. P. Wen, X. S. Qin, X. R. Zhou, Lei Zhao, B. Y. Zhang, T. Hu, Z. L. Hou, Joachim Pettersson, Q. J. Xu, D. Y. Wang, G. F. Xu, M. Qi, H. J. Yang, W. Shan, C. D. Fu, C. Q. Feng, J. Dong, Cheng Li, J. W. Zhang, O. Bakina, X. R. Chen, X. N. Li, Y. Wang, Z. Y. Deng, C. C. Zhang, S. Jin, K. Schoenning, Q. Y. Li, B. S. Zou, Haiping Peng, B. Zhong, L. B. Guo, Liqing Xu, P. X. Shen, X. Y. Shen, Z. Wu, Xingguo Li, L. W. Jiang, X. L. Ji, Zhiqing Zhang, G. A. Chelkov, C. Z. Yuan, Y. Q. Wang, H. Muramatsu, S. B. Liu, Y. Guo, Ulrich Wiedner, X. Liu, H. R. Qi, Talib Hussain, X. Y. Song, Z. J. Xiao, Serkant Ali Cetin, S. Nisar, C. J. Tang, T. Ma, S. Qian, Jialun Ping, Y. G. Xie, K. Zhang, X. Y. Zhang, M. Lara, J. B. Liu, Y. Hu, Y. J. Sun, E. Boger, S. X. Du, Y. P. Lu, Z. L. Dou, H. H. Liu, J. C. Li, J. Zhuang, S. J. Chen, Xiao-Rui Lyu, B. Wang, M. X. Luo, Yucheng Huang, D. V. Dedovich, D. Xiao, S. Han, X. Y. Jiang, G. S. Varner, M. M. Ma, P. R. Li, L. H. Wu, M. Savrie, X. Y. Gao, Y. Pan, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Jun-Yi Zhang, Y. P. Guo, Z. P. Zhang, D. W. Bennett, Zujian Wang, X. N. Ma, Y. T. Liang, M. Fritsch, M. Kavatsyuk, I. Tapan, Y. H. Yan, J. W. Zhao, Y. C. Zhu, B. X. Zhang, H. Xiao, T. Held, D. J. Ambrose, X. Fang, Z. L. Huang, Feng Liu, M. Albrecht, W. D. Li, M. Ablikim, S. Schumann, Yao Wang, J. F. Sun, S. Marcello, Y. Zeng, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Krisztian Peters, G. R. Liao, J. F. Hu, Xiaozhong Huang, Chi Zhang, Andrzej Kupsc, W. L. Yuan, M. L. Chen, P. L. Wang, X. L. Luo, F. Bianchi, Xian Gao, Q. Ouyang, M. Ullrich, S. S. Fang, Y. B. Liu, Zhiqing Liu, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, X. Q. Hao, F. A. Harris, Magnus Wolke, Y. F. Liang, S. L. Niu, Z. Ning, D. P. Jin, F. Y. Li, X. Q. Li, M. Greco, J. Y. Liu, Dayong Wang, N. Qin, Q. Gao, Y. N. Gao, K. Y. Liu, Y. Zhang, Q. An, Z. B. Li, W. Ikegami Andersson, J. Z. Fan, A. Zhemchugov, F. Li, Y. F. Wang, F. C. Ma, R. Farinelli, X. Y. Ma, W. X. Gong, J. F. Qiu, L. Fava, H. L. Ma, D. M. Li, F. Nerling, M. Pelizaeus, Y. X. Yang, X. H. Sun, A. Hafner, Q. Zhao, Y. Z. Sun, Xiang Zhou, Gang Zhao, P. Kiese, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, Z. G. Wang, and H. Y. Zhang

Subjects
Physics, Nuclear physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, B meson, Exponential decay, 010306 general physics, Branching (polymer chemistry), 01 natural sciences
Abstract

Using 482 pb(-1) of e(+) e(-) collision data collected at a center-of-mass energy of root s = 4.009 GeV with the BESIII detector, we measure the branching fractions of the decays D-s(+) -> u(+)v(u) and D-s(+) -> tau(+)v(tau). By constraining the ratio of decay rates of Ds(+) to tau(+)v(u) and to u(+)v(u) to the Standard Model prediction, the branching fractions are determined to be B(D-s(+) -> u(+)v(u) = (0.495 +/- 0.067 +/- 0.026)% and B(D-s(+) -> tau(+)v(tau) = (4.83 +/- 0.65 +/- 0.26)% Using these branching fractions, we obtain a value for the decay constant f(Ds+) of (241.0 +/- 16.3 +/- 6.5) MeV, where the first error is statistical and the second systematic.

Published
2016

31. Determination of the number of J/psi events with J/psi -> inclusive decays

Author

J. C. Chen, Z. P. Zheng, M. Bertani, A. Zhemchugov, P. L. Wang, B. Zhong, X. L. Luo, Ling Zhao, Q. Ji, Qingming Ma, D. H. Zhang, Feng Liu, Chang Liu, X. K. Zhou, Y. P. Guo, J. K. C. Leung, Z. Y. He, J. F. Hu, Z. A. Liu, G. X. Sun, W. G. Li, J. B. Jiao, Xie-Yan Song, Yang Yang, T. R. Zhang, Chang-Zheng Yuan, N. Wu, Y. P. Chu, Junguang Lu, C. F. Qiao, M. H. Gu, I. Boyko, Y. Zeng, H. L. Ma, M. Shao, Brent J. Liu, M. Destefanis, W. X. Gong, G. Li, Q. Ouyang, Tao Luo, H. S. Zhao, Q. J. Li, H. M. Liu, G. M. Xu, D. P. Jin, F. F. Jing, X. R. Zhou, J. L. Fu, T. Held, H. J. Lu, D. H. Sun, Z. G. Zhao, Y. X. Yang, X. Cai, Cheng Li, Y. T. Liang, X. W. Zhu, Xian Lun Zhu, X. H. Mo, O. Bondarenko, Q. J. Wang, J. P. Liu, G. S. Varner, R. E. Mitchell, M. N. Achasov, J. X. Zuo, B. Wang, Z. Y. Deng, C. D. Fu, S. H. Zhang, Y. Xu, L. Fava, Michael Werner, H. H. Zhang, Jianping Zheng, Lei Zhao, Y. Z. Sun, N. B. Li, Q Zhao, J. P. Dai, Jie Yu, J. S. Huang, Chunyan Zhu, T. C. Zhao, H. Ye, Guo-Ming Chen, A. Calcaterra, Y. J. Sun, W. L. Yuan, J. L. Ping, Yao Wang, J. G. Zhang, Hang Liu, Wei Li, Z. L. Hou, K. J. Zhu, B. D. Schaefer, H. S. Chen, S. S. Sun, Guangyu Zhao, C. L. Ma, Chun S. J. Pun, Yu-Bin Liu, R. Poling, Shaodan Ma, E. Prencipe, S. G. Wang, S. P. Wen, Y. F. Liang, X. L. Li, M. G. Zhao, H. P. Cheng, X. F. Wang, Huihui Liu, Ka-Yuet Liu, J. G. Messchendorp, X. Q. Li, Zhibing Li, M. R. Shepherd, Feng Xue, Cui Li, Qun-Yao Wang, Yi-Fang Zhao, Y. Ban, Q. A. Malik, J. Zhang, F. F. An, Q. J. Xu, D. H. Wei, Y. Q. Wang, Z. P. Mao, Q. L. Xiu, Hua-Bin Li, G. F. Xu, Y. K. Heng, M. Pelizaeus, M. Kavatsyuk, K. Li, L. Y. Dong, Niklaus Berger, C. S. Ji, Fang Liu, Lei Zhou, H. M. Hu, D. J. Ambrose, C. X. Yu, E. H. Thorndike, X. S. Jiang, H. B. Liu, Sai-Juan Chen, M. Ablikim, J. W. Zhang, A. A. Zafar, Z. J. Xiao, X. H. Zhao, X. P. Xu, B. Huang, L. S. Wang, N. Kalantar-Nayestanaki, M. H. Ye, H. Loehner, Xing Lu, T. Yang, Y. H. Guan, J. Zhong, X. H. Liu, L. Zhang, Y. Zhang, B. S. Zou, H. L. Dai, K. Peters, X. L. Ji, C. L. Luo, I. Denysenko, E. Boger, Yuehong Xie, Wei Wu, J. Zhuang, D. M. Li, L. B. Guo, J. F. Sun, S. X. Du, S. P. Yu, Z. A. Zhu, H. Y. Sheng, L. H. Wu, S. J. Zhao, H. H. Liu, B. Y. Zhang, M. Greco, J. Schulze, Talib Hussain, M. X. Luo, J. C. Li, S. Pacetti, C. Motzko, J. M. Bian, Kun Liu, Shisong Fang, S. L. Olsen, B. X. Zhang, J. Fang, B. X. Yu, Y. Ding, U. Wiedner, L. L. Wang, Y. B. Liu, A. Zallo, X. Y. Zhang, S. Qian, Y. H. Zheng, I. B. Nikolaev, G. R. Lu, W. B. Yan, J. F. Chang, L. G. Xia, H. Mao, G. F. Cao, M. L. Chen, Y. S. Zhu, J. F. Qiu, L. L. Jiang, G. Rong, Zhihao Xu, Chuan Liu, J. Q. Zhang, Joong-Won Park, Zhiqiang Liu, Miao He, Y. M. Zhu, R. G. Ping, Q. An, X. T. Liao, G. Chelkov, X. Q. Hao, H. Xu, F. C. Ma, Zhiyong Zhang, S. X. Wu, K. H. Rashid, Yuanbo Chen, X. Liu, P. Weidenkaff, S. B. Liu, Lei Li, Xueyong Shen, Xiujuan Tang, Daniel P Cronin-Hennessy, X. B. Ji, K. Goetzen, Y. J. Mao, Z. P. Zhang, T. Ma, Zujian Wang, X. N. Li, W. M. Ding, Z. Wu, Y. S. Zhang, C. Geng, Zhi-Jun Sun, Haiping Peng, M. Y. Dong, H. L. Tian, C. J. Tang, K. X. Zhao, Hai Liang, Z. H. An, Yulei Han, B. Spruck, Zhe Sun, Y. B. Chen, J. Z. Zhang, K. Wang, F. Feldbauer, M. Qi, J. K. Becker, Kunlun He, N. Yu. Muchnoi, Kai Liu, Y. H. Zhang, Q. W. Lu, Q. G. Wen, J. Z. Bai, Y. T. Gu, C. Q. Feng, Yang Gao, Z. Y. Wang, B. Q. Wang, Y. Ma, C. P. Shen, R. A. Briere, M. Maggiora, Li Yan, Fu-Hu Liu, L. K. Jia, Z. Ning, S. L. Li, R. B. Ferroli, Feng Li, Y. F. Wang, F. A. Harris, J. H. Zou, X. Y. Ma, Chunmei Zhang, C. H. Li, Z. Jiao, Z. G. Wang, H. Y. Zhang, J. Y. Zhang, J. Min, D. Dedovich, Shouguang Jin, Y. P. Huang, Zhiqing Liu, S. Spataro, Y. P. Lu, G. R. Liao, X. R. Li, D. Toth, W. Gradl, A. Q. Guo, W. Lai, Y. H. Yan, Tao Hu, W. Kuehn, T. J. Min, C. Morales Morales, Z. H. Qin, Z. Xue, M. Lu, X. L. Wang, Xingtao Huang, A. Denig, V. Bytev, Y. Qin, G. M. Huang, J. S. Lange, C. X. Liu, Jingwei Zhao, Y. Yuan, S. H. Zhu, P. L. Liu, X. S. Qin, C. Nicholson, M. Ullrich, X. D. Ruan, F. E. Maas, A. Sarantsev, Y. Nefedov, X. D. Sun, H. X. Yang, Xuantong Zhang, M. Wang, and KVI - Center for Advanced Radiation Technology

Subjects
Physics, Systematic error, Nuclear and High Energy Physics, Electron–positron annihilation, Detector, Monte Carlo method, BESIII, Inclusive events, Astronomy and Astrophysics, J/ψ→, Nuclear physics, BESIII detector, Number of J/ψ events, +inclusive+events%22">J/psi -> inclusive events, number of J/psi events, Instrumentation
Abstract

The number of J/psi events collected with the BESIII detector at the BEPC II from June 12 to July 28, 2009 is determined to be (225.3 +/- 2.8) x 10(6) using J/psi -> inclusive events, where the uncertainty is the systematic error and the statistical one is negligible.

Published
2012

32. Study ofD+→K−π+e+νe

Author

F. C. Ma, X. L. Ji, G. A. Chelkov, Q. Liu, F. De Mori, X. Y. Zhou, X. F. Wang, Q. M. Ma, B. Kloss, X. Y. Niu, Y. Yuan, Y. S. Zhu, Yu Zhang, Krisztian Peters, L. L. Ma, Talib Hussain, C. Dong, S. Sosio, Y. H. Guan, J. F. Qiu, L. G. Xia, A. Amoroso, A. Dbeyssi, M. Kornicer, A. Julin, Kai Liu, Yaquan Fang, L. J. Wu, L. Fava, C. Leng, G. R. Liao, J. F. Hu, Y. F. Wang, M. Maggiora, Ling Zhao, F. Nerling, A. Yuncu, Y. G. Xie, H. L. Ma, D. M. Li, H. B. Li, P. Larin, A. Q. Guo, Lei Zhao, X. N. Ma, Y. T. Liang, A. Zallo, M. H. Ye, Joachim Pettersson, H. Muramatsu, Z. T. Sun, Z. A. Liu, Tao Luo, X. Y. Ma, J. Min, S. X. Du, Y. N. Guo, Z. L. Hou, Yang Yang, S. B. Liu, W. X. Gong, A. G. Denig, C. L. Luo, V. Prasad, Y. Ban, P. Weidenkaff, Y. H. Yan, M. Fritsch, M. Kavatsyuk, W. M. Song, Shan Wang, Xiao-Rui Lyu, I. Tapan, M. Pelizaeus, B. X. Yu, Zhi Zeng, K. Li, C. C. Zhang, B. Zhong, L. B. Guo, J. J. Xu, Jun-Yi Zhang, Y. P. Guo, X. H. Sun, X. K. Zhou, K. Schoenning, B. S. Zou, Y. X. Yang, J. Q. Zhang, Fang Liu, W. P. Wang, D. Y. Liu, J. B. Jiao, Z. P. Zhang, J. F. Sun, C. Z. Yuan, S. Marcello, Y. Zeng, L. D. Liu, L. Y. Dong, Y. Nefedov, Z. Ning, B. Kopf, P. L. Wang, A. Hafner, Q. Zhao, J. W. Zhao, R. Kliemt, Y. C. Zhu, Y. Z. Sun, K. L. He, S. P. Wen, X. S. Qin, X. R. Zhou, B. X. Zhang, S. L. Niu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, I. Denysenko, H. S. Chen, H. J. Lu, J. G. Lu, G. S. Varner, Cheng Li, Yunlong Zhang, F. Y. Li, X. Q. Li, M. Greco, Z. H. Qin, Y. J. Mao, H. X. Yang, Q. Ouyang, Jie Yu, Xiang Zhou, X. K. Chu, B. Y. Zhang, D. W. Bennett, Zujian Wang, M. Z. Wang, S. Schumann, F. E. Maas, I. Garzia, D. Bettoni, H. Liang, I. B. Nikolaev, Q. P. Ji, T. Hu, Yao Wang, H. Xiao, H. L. Dai, Igor Boyko, Ulrich Wiedner, T. Ma, Guangshun Huang, Cui Li, S. S. Fang, W. J. Zheng, K. J. Zhu, J. L. Zhang, Jimin Zhao, L. Yan, T. Held, Gang Zhao, J. S. Huang, G. Cibinetto, Huihui Liu, Jianping Zheng, S. Zhu, J. C. Li, J. P. Liu, J. Zhuang, Y. B. Liu, K. Y. Liu, M. Y. Dong, D. J. Ambrose, Y. X. Xia, S. H. Zhu, J. Z. Bai, O. B. Kolcu, Z. B. Li, Chi Zhang, J. G. Messchendorp, Guangming Huang, H. B. Liu, J. H. Liu, Ke Wang, C. X. Liu, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, J. P. Dai, M. Bertani, Z. Haddadi, Peilian Liu, L. Yang, J. H. Zou, P. X. Shen, Z. Wu, L. W. Jiang, G. Felici, X. Fang, J. J. Zhang, J. Y. Liu, M. Shi, W. C. Yan, Lingxuan Zhang, M. Destefanis, Y. B. Zhao, M. Albrecht, P. Kiese, C. Hu, Feng Liu, X. Q. He, X. B. Ji, M. Tiemens, W. G. Li, S. S. Sun, Zhiqing Zhang, W. Shan, X. Tang, W. D. Li, M. Ablikim, S. L. Olsen, J. Dong, R. A. Briere, P. Patteri, M. N. Achasov, Zhiyong Zhang, X. M. Li, L. P. Zhou, R. Poling, S. Spataro, P. F. Duan, X. S. Jiang, X. P. Xu, Z. P. Mao, Y. Q. Wang, W. Gradl, M. Ripka, H. P. Cheng, J. Fang, Tao Li, G. Li, S. Nisar, C. J. Tang, Lei Li, H. M. Liu, R. E. Mitchell, Z. Gao, Xichao Ruan, Fenfen An, D. Y. Wang, Q. Gao, M. Qi, H. J. Yang, Y. Hu, Y. P. Lu, C. D. Fu, A. Calcaterra, Z. G. Zhao, Ch. Rosner, Y. N. Gao, M. H. Gu, X. H. Mo, L. S. Wang, C. Q. Feng, X. R. Chen, O. Cakir, K. Moriya, J. J. Liang, H. J. Li, Z. Y. Deng, G. F. Cao, Bibo Ke, W. B. Yan, Y. Zhang, T. C. Zhao, Q. L. Xiu, H. H. Zhang, H. Y. Sheng, B. Wang, Xingguo Li, D. Xiao, Z. J. Sun, H. Loehner, J. Z. Fan, L. L. Wang, S. Pacetti, X. Y. Jiang, C. X. Yu, H. Cai, X. Liu, M. M. Ma, B. Zheng, R. G. Ping, X. L. Luo, G. F. Xu, J. H. Yin, K. H. Rashid, L. Zotti, M. Shao, Y. T. Gu, Y. Pan, S. Jin, E. Fioravanti, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, R. Baldini Ferroli, S. Chen Chen, G. X. Sun, J. V. Bennett, F. Bianchi, Serkant Ali Cetin, Z. Jiao, Fu-Hu Liu, D. H. Zhang, S. Qian, Q. An, Jialun Ping, K. Zhang, X. Y. Zhang, X. N. Li, M. Lara, J. B. Liu, X. Y. Song, Y. J. Sun, E. Boger, Haiping Peng, X. C. Lou, Jie Zhao, D. X. Lin, H. M. Hu, K. Goetzen, W. Kuehn, F. A. Harris, J. W. Zhang, Zhiqing Liu, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, T. Johansson, Z. Y. Wang, J. F. Chang, E. H. Thorndike, L. Q. Qin, F. Feldbauer, X. C. Chen, X. Cai, X. Q. Hao, Y. J. Mo, T. Weber, Jin Li, Liqing Xu, X. Y. Shen, V. Santoro, Y. Ding, B. J. Liu, M. G. Zhao, R. P. Guo, Y. N. Zhang, Andrzej Kupsc, W. L. Yuan, Z. G. Wang, Z. A. Zhu, M. L. Chen, H. Y. Zhang, C. P. Shen, G. F. Chen, S. J. Chen, J. Y. Zhang, S. Han, L. H. Wu, I. Uman, M. Savrie, X. Y. Gao, L. Xia, Y. K. Heng, J. M. Bian, S. J. Zhao, Q. J. Xu, Z. H. Wang, J. C. Chen, Nasser Kalantar-Nayestanaki, C. Morales Morales, M. Ullrich, Z. J. Xiao, C. F. Redmer, Xiaocong Ai, A. Zhemchugov, X. T. Huang, A. A. Zafar, G. Rong, Magnus Wolke, Y. F. Liang, D. P. Jin, Dayong Wang, N. Qin, X. L. Gao, and F. Li

Subjects
Nuclear physics, Physics, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, 010306 general physics, 01 natural sciences, Helicity
Abstract

We present an analysis of the decay D+ -> K-pi(+)e(+)nu(e) based on data collected by the BESIII experiment at the psi(3770) resonance. Using a nearly background-free sample of 18262 events, we measure the branching fraction B(D+ -> K-pi+e+nu e) = (3.77 +/- 0.03 +/- 0.08)%. For 0.8 K-pi+e+nu e)([0.8,1.0]) = (3.39 +/- 0.03 +/- 0.08)%. A partial wave analysis shows that the dominant (K) over bar* (892)degrees component is accompanied by an S-wave contribution accounting for (6.05 +/- 0.22 +/- 0.18)% of the total rate and that other components are negligible. The parameters of the (K) over bar* (892)degrees resonance and of the form factors based on the spectroscopic pole dominance predictions are also measured. We also present a measurement of the (K) over bar* (892)degrees helicity basis form factors in a model-independent way.

Published
2016

33. Measurement of Singly Cabibbo Suppressed Decays Λ_{c}^{+}→pπ^{+}π^{-} and Λ_{c}^{+}→pK^{+}K^{-}

Author

M, Ablikim, M N, Achasov, S, Ahmed, X C, Ai, O, Albayrak, M, Albrecht, D J, Ambrose, A, Amoroso, F F, An, Q, An, J Z, Bai, O, Bakina, R, Baldini Ferroli, Y, Ban, D W, Bennett, J V, Bennett, N, Berger, M, Bertani, D, Bettoni, J M, Bian, F, Bianchi, E, Boger, I, Boyko, R A, Briere, H, Cai, X, Cai, O, Cakir, A, Calcaterra, G F, Cao, S A, Cetin, J, Chai, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S, Chen, S J, Chen, X, Chen, X R, Chen, Y B, Chen, H P, Cheng, X K, Chu, G, Cibinetto, H L, Dai, J P, Dai, A, Dbeyssi, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, F, De Mori, Y, Ding, C, Dong, J, Dong, L Y, Dong, M Y, Dong, Z L, Dou, S X, Du, P F, Duan, J Z, Fan, J, Fang, S S, Fang, X, Fang, Y, Fang, R, Farinelli, L, Fava, S, Fegan, F, Feldbauer, G, Felici, C Q, Feng, E, Fioravanti, M, Fritsch, C D, Fu, Q, Gao, X L, Gao, Y, Gao, Z, Gao, I, Garzia, K, Goetzen, L, Gong, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, R P, Guo, Y, Guo, Y P, Guo, Z, Haddadi, A, Hafner, S, Han, X Q, Hao, F A, Harris, K L, He, F H, Heinsius, T, Held, Y K, Heng, T, Holtmann, Z L, Hou, C, Hu, H M, Hu, J F, Hu, T, Hu, Y, Hu, G S, Huang, J S, Huang, X T, Huang, X Z, Huang, Y, Huang, Z L, Huang, T, Hussain, W, Ikegami Andersson, Q, Ji, Q P, Ji, X B, Ji, X L, Ji, L W, Jiang, X S, Jiang, X Y, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, T, Johansson, A, Julin, N, Kalantar-Nayestanaki, X L, Kang, X S, Kang, M, Kavatsyuk, B C, Ke, P, Kiese, R, Kliemt, B, Kloss, O B, Kolcu, B, Kopf, M, Kornicer, A, Kupsc, W, Kühn, J S, Lange, M, Lara, P, Larin, H, Leithoff, C, Leng, C, Li, Cheng, Li, D M, Li, F, Li, F Y, Li, G, Li, H B, Li, H J, Li, J C, Li, Jin, Li, K, Li, Lei, Li, P L, Li, P R, Li, Q Y, Li, T, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, Y B, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, D X, Lin, B, Liu, B J, Liu, C X, Liu, D, Liu, F H, Liu, Fang, Liu, Feng, Liu, H B, Liu, H H, Liu, H M, Liu, J, Liu, J B, Liu, J P, Liu, J Y, Liu, K, Liu, K Y, Liu, L D, Liu, P L, Liu, Q, Liu, S B, Liu, X, Liu, Y B, Liu, Y Y, Liu, Z A, Liu, Zhiqing, Liu, H, Loehner, Y F, Long, X C, Lou, H J, Lu, J G, Lu, Y, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, X R, Lyu, F C, Ma, H L, Ma, L L, Ma, M M, Ma, Q M, Ma, T, Ma, X N, Ma, X Y, Ma, Y M, Ma, F E, Maas, M, Maggiora, Q A, Malik, Y J, Mao, Z P, Mao, S, Marcello, J G, Messchendorp, G, Mezzadri, J, Min, T J, Min, R E, Mitchell, X H, Mo, Y J, Mo, C, Morales Morales, N Yu, Muchnoi, H, Muramatsu, P, Musiol, Y, Nefedov, F, Nerling, I B, Nikolaev, Z, Ning, S, Nisar, S L, Niu, X Y, Niu, S L, Olsen, Q, Ouyang, S, Pacetti, Y, Pan, P, Patteri, M, Pelizaeus, H P, Peng, K, Peters, J, Pettersson, J L, Ping, R G, Ping, R, Poling, V, Prasad, H R, Qi, M, Qi, S, Qian, C F, Qiao, L Q, Qin, N, Qin, X S, Qin, Z H, Qin, J F, Qiu, K H, Rashid, C F, Redmer, M, Ripka, G, Rong, Ch, Rosner, X D, Ruan, A, Sarantsev, M, Savrié, C, Schnier, K, Schoenning, S, Schumann, W, Shan, M, Shao, C P, Shen, P X, Shen, X Y, Shen, H Y, Sheng, M, Shi, W M, Song, X Y, Song, S, Sosio, S, Spataro, G X, Sun, J F, Sun, S S, Sun, X H, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, I, Tapan, E H, Thorndike, M, Tiemens, I, Uman, G S, Varner, B, Wang, B L, Wang, D, Wang, D Y, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, W, Wang, W P, Wang, X F, Wang, Y, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z H, Wang, Z Y, Wang, T, Weber, D H, Wei, P, Weidenkaff, S P, Wen, U, Wiedner, M, Wolke, L H, Wu, L J, Wu, Z, Wu, L, Xia, L G, Xia, Y, Xia, D, Xiao, H, Xiao, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, J J, Xu, L, Xu, Q J, Xu, Q N, Xu, X P, Xu, L, Yan, W B, Yan, W C, Yan, Y H, Yan, H J, Yang, H X, Yang, L, Yang, Y X, Yang, M, Ye, M H, Ye, J H, Yin, Z Y, You, B X, Yu, C X, Yu, J S, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A, Yuncu, A A, Zafar, A, Zallo, Y, Zeng, Z, Zeng, B X, Zhang, B Y, Zhang, C, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J J, Zhang, J L, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, K, Zhang, L, Zhang, S Q, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y N, Zhang, Y T, Zhang, Yu, Zhang, Z H, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, J W, Zhao, J Y, Zhao, J Z, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, Q W, Zhao, S J, Zhao, T C, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, W J, Zheng, Y H, Zheng, B, Zhong, L, Zhou, X, Zhou, X K, Zhou, X R, Zhou, X Y, Zhou, K, Zhu, K J, Zhu, S, Zhu, S H, Zhu, X L, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, L, Zotti, B S, Zou, and J H, Zou

Abstract

Using 567 pb^{-1} of data collected with the BESIII detector at a center-of-mass energy of sqrt[s]=4.599 GeV, near the Λ_{c}^{+}Λ[over ¯]_{c}^{-} threshold, we study the singly Cabibbo-suppressed decays Λ_{c}^{+}→pπ^{+}π^{-} and Λ_{c}^{+}→pK^{+}K^{-}. By normalizing with respect to the Cabibbo-favored decay Λ_{c}^{+}→pK^{-}π^{+}, we obtain ratios of branching fractions: [B(Λ_{c}^{+}→pπ^{+}π^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})]=(6.70±0.48±0.25)%, [B(Λ_{c}^{+}→pϕ)/B(Λ_{c}^{+}→pK^{-}π^{+})]=(1.81±0.33±0.13)%, and [B(Λ_{c}^{+}→pK^{+}K_{non-ϕ}^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})]=(9.36±2.22±0.71)×10^{-3}, where the uncertainties are statistical and systematic, respectively. The absolute branching fractions are also presented. Among these measurements, the decay Λ_{c}^{+}→pπ^{+}π^{-} is observed for the first time, and the precision of the branching fraction for Λ_{c}^{+}→pK^{+}K_{non-ϕ}^{-} and Λ_{c}^{+}→pϕ is significantly improved.

Published
2016

34. Observation of an Anomalous Line Shape of theη′π+π−Mass Spectrum near thepp¯Mass Threshold inJ/ψ→γη′π+π−

Author

S. L. Niu, F. Y. Li, S. Schumann, X. Q. Li, M. Greco, Tao Luo, Yao Wang, S. Ahmed, J. M. Bian, K. Li, Y. X. Yang, H. H. Liu, X. K. Zhou, Zhenyu Zhang, S. J. Zhao, J. C. Li, Z. Ning, Fang Liu, B. X. Yu, Bingxuan Liu, Zhi Zeng, K. Y. Liu, J. Zhuang, I. Denysenko, G. Li, M. X. Luo, C. Leng, A. Hafner, Q. Zhao, M. H. Ye, Z. B. Li, Jian Wei, Yucheng Huang, D. V. Dedovich, J. Min, C. D. Fu, B. Kopf, Y. J. Mao, H. X. Yang, I. Uman, K. L. He, C. Q. Feng, J. C. Chen, Xuanhong Lou, X. R. Chen, H. S. Chen, H. L. Dai, Igor Boyko, M. Qi, H. J. Yang, M. Z. Wang, I. Garzia, Z. Y. Deng, Jimin Zhao, B. Y. Zhang, F. De Mori, S. B. Liu, Nasser Kalantar-Nayestanaki, X. K. Chu, Y. Z. Sun, Xiang Zhou, G. F. Xu, L. D. Liu, S. Jin, X. N. Ma, Y. H. Guan, Kai Liu, M. Bertani, J. Q. Zhang, Z. Haddadi, L. Y. Dong, L. Yang, C. Morales Morales, Zhiqing Liu, P. Larin, A. Zallo, Xingguo Li, Gang Zhao, W. Gradl, J. P. Liu, Y. Ding, B. J. Liu, Y. Guo, Jun-Yi Zhang, Y. P. Guo, Y. F. Wang, C. Dong, S. Sosio, T. Johansson, J. F. Chang, J. H. Liu, Peilian Liu, Lingxuan Zhang, Ke Wang, T. Hussain, X. Y. Ma, Jin Li, W. X. Gong, O. B. Kolcu, X. Cai, Joachim Pettersson, R. Farinelli, M. Ripka, D. Y. Wang, W. Kühn, M. Fritsch, M. Kavatsyuk, X. Q. Hao, J. G. Messchendorp, J. P. Dai, Y. Nefedov, X. Y. Song, Z. P. Zhang, H. J. Lu, J. G. Lu, H. L. Ma, D. M. Li, W. J. Zheng, Z. A. Zhu, P. F. Duan, Xian Gao, Krisztian Peters, X. Y. Zhou, H. B. Li, A. G. Denig, C. L. Luo, C. C. Zhang, B. Zhong, L. B. Guo, Fenfen An, Qiunan Xu, M. Shi, Yunlong Zhang, I. Tapan, Y. H. Yan, X. H. Sun, D. W. Bennett, Zujian Wang, P. Kiese, B. L. Wang, M. Pelizaeus, S. Han, M. G. Zhao, R. P. Guo, C. P. Shen, D. Bettoni, P. L. Wang, Bibo Ke, T. C. Zhao, W. B. Yan, M. H. Gu, Shan Wang, Xiao-Rui Lyu, J. L. Zhang, H. Muramatsu, Jie Zhao, D. X. Lin, T. Holtmann, R. Poling, S. L. Olsen, Q. A. Malik, G. Mezzadri, A. Q. Guo, J. W. Zhao, R. A. Briere, Y. N. Zhang, L. J. Wu, X. F. Wang, O. Fedorov, X. S. Jiang, Alexey Zhemchugov, H. M. Hu, M. N. Achasov, Ulrich Wiedner, H. Y. Sheng, W. M. Song, Cui Li, X. Liu, C. X. Yu, Q. M. Ma, B. Kloss, K. Goetzen, Jianping Zheng, S. Zhu, M. Kornicer, B. X. Zhang, J. Y. Liu, Guangshun Huang, L. Yan, Z. G. Wang, H. Y. Zhang, Y. J. Mo, Giulietto Felici, S. Pacetti, O. Cakir, X. Y. Niu, H. R. Qi, Z. J. Xiao, R. Baldini Ferroli, W. C. Yan, T. Ma, Yanping Huang, J. W. Zhang, X. Fang, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, Q. J. Xu, G. S. Varner, F. A. Harris, H. Leithoff, B. Zheng, J. J. Zhang, M. Destefanis, L. Zotti, C. Hu, R. G. Ping, Z. T. Sun, F. E. Maas, T. Hu, Z. L. Huang, J. Z. Fan, Feng Liu, L. Xia, Y. C. Zhu, W. P. Wang, T. Weber, Z. A. Liu, Y. Yuan, Y. S. Zhu, F. Li, Z. H. Qin, G. R. Liao, J. F. Hu, X. Tang, Y. X. Xia, S. H. Zhu, M. Ablikim, G. F. Chen, G. A. Chelkov, F. C. Ma, V. Prasad, A. Calcaterra, Z. G. Zhao, P. X. Shen, Serkant Ali Cetin, J. Y. Zhang, Q. P. Ji, Xiangdong Ruan, M. Y. Dong, A. Yuncu, Si Chen, L. H. Wu, M. Savrie, Q. Liu, Z. Wu, Y. Ban, L. W. Jiang, J. J. Xu, X. N. Li, Magnus Wolke, P. Weidenkaff, F. H. Heinsius, X. Y. Gao, H. Xiao, E. Boger, Yu Zhang, Y. F. Liang, W. G. Li, Liqing Xu, X. Y. Shen, M. Tiemens, H. H. Zhang, Haiping Peng, S. Qian, Zhiqing Zhang, Jialun Ping, M. Maggiora, Ling Zhao, J. F. Qiu, K. Zhang, T. Held, L. L. Ma, Y. B. Li, H. B. Liu, D. P. Jin, S. P. Wen, Z. J. Sun, H. Loehner, Lei Zhao, L. Fava, L. Gong, X. Y. Zhang, K. J. Zhu, X. S. Qin, Z. L. Hou, J. S. Huang, X. R. Zhou, F. Nerling, L. G. Xia, A. Amoroso, L. P. Zhou, X. L. Ji, C. X. Liu, S. Spataro, X. P. Xu, Dayong Wang, N. Qin, Y. Y. Liu, A. A. Zafar, Y. K. Heng, M. Lara, J. B. Liu, Xiaozhong Huang, Cheng Li, D. J. Ambrose, J. H. Zou, Y. J. Sun, Lei Li, A. Dbeyssi, Y. M. Ma, K. H. Rashid, Y. P. Lu, H. M. Liu, C. Z. Yuan, Andrzej Kupsc, W. L. Yuan, Y. T. Liang, Z. P. Mao, S. J. Chen, S. S. Sun, A. Julin, Chi Zhang, M. L. Chen, Yanwei Wang, D. Y. Liu, J. B. Jiao, G. F. Cao, M. Albrecht, Y. G. Xie, S. Q. Zhang, W. D. Li, Z. H. Wang, P. Musiol, C. F. Redmer, Xiaocong Ai, C. Schnier, S. X. Du, Z. L. Dou, J. F. Sun, X. T. Huang, G. Rong, H. P. Cheng, J. Fang, Tao Li, S. Marcello, Y. Zeng, R. E. Mitchell, Z. Gao, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Ch. Rosner, Yaquan Fang, K. Schoenning, Q. Y. Li, B. S. Zou, Niklaus Berger, X. L. Luo, H. Liang, F. Bianchi, H. J. Li, Q. L. Xiu, Q. Ouyang, S. S. Fang, I. B. Nikolaev, Y. B. Liu, J. H. Yin, M. Shao, Y. T. Gu, E. Fioravanti, X. L. Kang, A. Sarantsev, D. H. Wei, J. S. Lange, Q. W. Zhao, X. H. Mo, L. S. Wang, L. L. Wang, H. Cai, Y. B. Zhao, W. Shan, J. Dong, Y. Q. Wang, S. Nisar, C. J. Tang, Y. Hu, B. Wang, D. Xiao, X. Y. Jiang, M. M. Ma, P. R. Li, Y. Pan, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, Z. Y. Wang, E. H. Thorndike, L. Q. Qin, F. Feldbauer, X. C. Chen, J. Z. Bai, X. B. Ji, P. Patteri, R. Kliemt, Jie Yu, T. J. Min, and G. Cibinetto

Subjects
Quantum chromodynamics, Physics, 010308 nuclear & particles physics, Glueball, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Nuclear physics, Amplitude, 0103 physical sciences, Bound state, Pi, Mass spectrum, High Energy Physics::Experiment, Invariant mass, 010306 general physics
Abstract

Using 1.09 x 10(9) J/psi events collected by the BESIII experiment in 2012, we study the J / psi -> gamma eta'pi(+)pi(-) process and observe a significant abrupt change in the slope of the eta'pi(+)pi(-) invariant mass distribution at the proton-antiproton (p (p) over bar) mass threshold. We use two models to characterize the eta'pi(+)pi(-) line shape around 1.85 GeV/c(2): one that explicitly incorporates the opening of a decay threshold in the mass spectrum (Flatte formula), and another that is the coherent sum of two resonant amplitudes. Both fits show almost equally good agreement with data, and suggest the existence of either a broad state around 1.85 GeV/c(2) with strong couplings to the c final states or a narrow state just below the p (p) over bar mass threshold. Although we cannot distinguish between the fits, either one supports the existence of a p (p) over bar moleculelike state or bound state with greater than 7 sigma significance.

Published
2016

35. Search for the weak decayη′→K±π∓and precise measurement of the branching fractionB(J/ψ→ϕη′)

Author

Q. Liu, Y. H. Guan, Y. J. Mo, C. Dong, S. Sosio, Kai Liu, J. Min, L. L. Ma, Y. X. Xia, S. H. Zhu, X. K. Zhou, S. B. Liu, H. S. Chen, T. Weber, Tao Luo, L. G. Xia, A. Amoroso, Joachim Pettersson, Y. N. Guo, Y. Nefedov, A. Dbeyssi, B. Kopf, B. X. Yu, Y. J. Mao, Q. P. Ji, C. Leng, H. X. Yang, K. L. He, Jin Li, I. Garzia, M. Kornicer, Cui Li, Z. H. Wang, Liqing Xu, X. Y. Shen, M. Z. Wang, Jimin Zhao, J. P. Liu, A. Julin, F. De Mori, V. Santoro, O. B. Kolcu, J. G. Messchendorp, C. F. Redmer, M. G. Zhao, J. P. Dai, Fang Liu, H. L. Dai, Igor Boyko, W. G. Li, X. M. Li, S. Spataro, X. P. Xu, Xiaocong Ai, F. Li, Lei Li, H. M. Liu, Y. N. Zhang, J. F. Hu, Y. Ding, G. F. Cao, I. Denysenko, Yunlong Zhang, Shan Wang, Xiao-Rui Lyu, J. Q. Zhang, X. Y. Zhou, M. H. Ye, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, G. Felici, D. Bettoni, J. L. Zhang, J. H. Liu, B. J. Liu, A. Zhemchugov, X. T. Huang, A. A. Zafar, I. Tapan, Y. H. Yan, A. Q. Guo, L. D. Liu, L. Y. Dong, B. Y. Zhang, Jianping Zheng, S. Zhu, Ke Wang, Xichao Ruan, M. H. Gu, X. F. Wang, W. M. Song, F. C. Ma, W. Kühn, K. Goetzen, J. W. Zhao, M. Bertani, Z. Haddadi, J. M. Bian, S. J. Zhao, G. Rong, Z. H. Qin, J. J. Zhang, M. Destefanis, W. J. Zheng, Q. M. Ma, Jie Zhao, D. X. Lin, Z. A. Zhu, G. S. Varner, L. Yang, Y. C. Zhu, N. Yu. Muchnoi, H. J. Lu, H. Y. Sheng, C. Hu, H. M. Hu, X. Tang, R. Poling, P. F. Duan, B. Kloss, X. Y. Niu, J. G. Lu, Fenfen An, S. Han, S. Qian, Q. An, Jialun Ping, X. S. Kang, Q. L. Xiu, J. Z. Bai, Y. Yuan, C. X. Yu, Y. S. Zhu, Yu Zhang, J. W. Zhang, C. P. Shen, T. C. Zhao, Q. J. Xu, Bibo Ke, W. B. Yan, J. C. Chen, Xuanhong Lou, F. E. Maas, Y. H. Zhang, Y. B. Zhao, H. Xiao, K. Zhang, X. Y. Zhang, L. H. Wu, W. Gradl, T. Hu, T. Held, B. Zheng, R. G. Ping, M. Ripka, Nasser Kalantar-Nayestanaki, K. J. Zhu, K. Moriya, M. Savrie, S. Schumann, J. F. Sun, S. Pacetti, C. Morales Morales, J. F. Qiu, X. L. Ji, D. Y. Wang, M. Qi, Z. T. Sun, X. H. Mo, D. J. Ambrose, Yao Wang, M. Maggiora, G. A. Chelkov, H. J. Yang, L. S. Wang, R. Baldini Ferroli, X. Y. Gao, Z. A. Liu, X. B. Ji, M. Tiemens, P. Larin, Z. G. Wang, Talib Hussain, Ling Zhao, Z. Y. Wang, Ke Li, M. Lara, J. B. Liu, Y. J. Sun, P. Patteri, Yaquan Fang, M. Greco, V. Prasad, L. Fava, G. F. Xu, W. Shan, Y. Ban, M. Y. Dong, P. Weidenkaff, Q. Ouyang, J. Dong, S. Jin, Lei Zhao, L. L. Wang, H. Y. Zhang, S. S. Fang, Guangming Huang, P. X. Shen, M. Albrecht, Z. Wu, E. Boger, S. P. Wen, H. Cai, X. S. Qin, X. R. Zhou, H. B. Liu, A. Yuncu, Y. G. Xie, Y. B. Liu, L. W. Jiang, Cheng Li, W. D. Li, Z. L. Hou, Yang Yang, F. Nerling, J. H. Zou, P. L. Wang, X. N. Li, Y. P. Lu, X. N. Ma, G. F. Chen, G. Li, X. L. Luo, Zhiqing Zhang, Y. T. Liang, J. H. Yin, K. H. Rashid, S. X. Du, H. L. Ma, A. Zallo, X. K. Chu, D. M. Li, Haiping Peng, S. S. Sun, E. H. Thorndike, J. Y. Zhang, C. D. Fu, M. Shao, Y. T. Gu, X. Y. Song, C. Q. Feng, X. R. Chen, Y. Q. Wang, W. P. Wang, F. Bianchi, H. Muramatsu, Z. Y. Deng, S. J. Chen, Peilian Liu, Lingxuan Zhang, M. Fritsch, S. Marcello, Y. Zeng, Xingguo Li, J. B. Jiao, M. Kavatsyuk, Zhiyong Zhang, R. Kliemt, R. E. Mitchell, L. Q. Qin, M. Pelizaeus, E. Fioravanti, S. Nisar, Jie Yu, J. S. Huang, C. X. Liu, B. X. Zhang, G. Cibinetto, Y. X. Yang, Y. K. Heng, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, C. J. Tang, F. Feldbauer, Y. Hu, X. Fang, K. Schoenning, B. S. Zou, Feng Liu, X. C. Chen, Q. W. Zhao, M. Ablikim, A. Hafner, W. C. Yan, Q. Zhao, Y. Z. Sun, X. Q. He, B. Wang, C. Z. Yuan, Xiang Zhou, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, M. N. Achasov, L. P. Zhou, D. Xiao, Z. P. Mao, Gang Zhao, X. Liu, X. Y. Jiang, H. P. Cheng, J. Fang, Tao Li, Serkant Ali Cetin, Ch. Rosner, H. H. Liu, J. C. Li, G. X. Sun, J. V. Bennett, Li Yan, H. Liang, I. B. Nikolaev, J. Y. Liu, J. Zhuang, Z. Jiao, Fu-Hu Liu, D. H. Zhang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, Y. P. Guo, Z. P. Zhang, D. W. Bennett, Zujian Wang, Chi Zhang, Q. Gao, Y. N. Gao, G. S. Huang, Y. Zhang, J. Z. Fan, Krisztian Peters, G. R. Liao, A. Calcaterra, Z. G. Zhao, H. H. Zhang, Z. J. Sun, H. Loehner, H. B. Li, A. G. Denig, C. L. Luo, C. C. Zhang, B. Zhong, L. B. Guo, Ulrich Wiedner, T. Ma, Magnus Wolke, Y. F. Liang, Z. Ning, D. P. Jin, Dayong Wang, N. Qin, Andrzej Kupsc, W. L. Yuan, M. L. Chen, Zhiqing Liu, I. Uman, T. Johansson, J. F. Chang, M. Ullrich, Z. J. Xiao, X. Cai, X. Q. Hao, L. Zotti, F. A. Harris, Y. F. Wang, X. Y. Ma, W. X. Gong, P. Kiese, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, Z. Gao, S. L. Niu, F. Y. Li, X. Q. Li, K. Y. Liu, and Z. B. Li

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, Pi, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 01 natural sciences
Abstract

We present the first search for the rare decay of eta' into K-+/- pi(-/+) in J/psi -> phi eta', using a sample of 1.3 x 10(9) J/psi events collected with the BESIII detector. No significant signal is observed, and the upper limit at the 90% confidence level for the ratio B(eta' -> K-+/- pi(-/+))/B(eta' -> gamma pi(+/-) pi(-/+)) is determined to be 1.3 x 10(-4). In addition, we report the measurement of the branching fraction of J/psi -> phi eta' to be [5.10 +/- 0.03(stat) +/- 0.32(syst)] x 10(-4), which agrees with previous results from BESII.

Published
2016

36. Study ofψdecays to theΞ−Ξ¯+andΣ(1385)∓Σ¯(1385)±final states

Author

J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, M. Y. Dong, Y. B. Zhao, E. Fioravanti, H. B. Liu, M. Maggiora, Yunlong Zhang, Ling Zhao, J. H. Zou, W. Shan, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, S. Han, D. Bettoni, S. S. Sun, Q. Liu, Lei Zhao, Q. W. Zhao, Z. L. Hou, A. Q. Guo, Jin Li, J. L. Zhang, J. B. Jiao, L. H. Wu, C. Leng, Y. Q. Wang, M. G. Zhao, Jianping Zheng, S. Zhu, M. Savrie, Y. F. Wang, L. L. Ma, L. Gong, S. Nisar, Y. N. Zhang, M. Destefanis, C. J. Tang, Z. G. Zhao, W. M. Song, Y. Hu, L. G. Xia, R. E. Mitchell, X. Y. Gao, G. Li, A. Amoroso, Y. P. Lu, H. H. Zhang, Z. G. Wang, H. Y. Zhang, M. H. Ye, R. Farinelli, C. D. Fu, G. F. Chen, M. Bertani, J. Q. Zhang, C. Z. Yuan, J. Y. Zhang, J. J. Zhang, H. Liang, C. Hu, Z. J. Sun, H. Loehner, Z. T. Sun, Y. K. Heng, B. Wang, D. Xiao, I. B. Nikolaev, Q. P. Ji, L. D. Liu, L. Y. Dong, W. P. Wang, W. X. Gong, H. L. Ma, D. M. Li, C. Q. Feng, X. R. Chen, Z. Y. Deng, X. Tang, M. Qi, A. Dbeyssi, Y. H. Guan, Z. A. Liu, V. Prasad, H. Muramatsu, H. J. Lu, J. G. Lu, W. J. Zheng, Fang Liu, M. Pelizaeus, H. J. Yang, Xingguo Li, J. C. Li, W. G. Li, M. Kornicer, F. E. Maas, T. Hu, Y. Ban, Tao Luo, V. Santoro, Y. H. Zheng, J. F. Sun, Kai Liu, K. J. Zhu, Z. Gao, X. L. Luo, X. Y. Jiang, P. Weidenkaff, A. Julin, Yaquan Fang, I. Denysenko, S. L. Niu, J. Zhuang, F. Y. Li, M. X. Luo, Jian Wei, X. Q. Li, S. Marcello, Y. X. Yang, S. Spataro, G. Cibinetto, X. P. Xu, Yucheng Huang, Cong-Feng Qiao, P. X. Shen, R. Kliemt, D. V. Dedovich, S. P. Wen, S. B. Liu, X. H. Mo, L. S. Wang, X. L. Gao, D. J. Ambrose, Y. Nefedov, B. Y. Zhang, O. Albayrak, Y. Zeng, F. De Mori, S. J. Chen, Z. Wu, X. S. Qin, L. W. Jiang, Jie Yu, K. Schoenning, Q. Y. Li, B. S. Zou, X. R. Zhou, Zhiqing Zhang, Lei Li, N. Yu. Muchnoi, A. Hafner, H. M. Liu, Cheng Li, G. Felici, G. F. Xu, S. Jin, Q. Zhao, W. C. Yan, J. F. Hu, C. Dong, S. Sosio, G. X. Sun, J. V. Bennett, Q. Ouyang, Li Yan, S. Schumann, X. S. Kang, Y. Z. Sun, J. Fang, X. Y. Zhou, L. L. Wang, H. Cai, A. Calcaterra, M. N. Achasov, H. B. Li, A. G. Denig, C. L. Luo, L. P. Zhou, X. Liu, H. R. Qi, Z. H. Wang, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Xiang Zhou, K. Y. Liu, Y. M. Ma, Y. H. Zhang, G. F. Cao, S. S. Fang, Z. P. Mao, Xichao Ruan, Joachim Pettersson, Y. N. Guo, H. P. Cheng, Tao Li, M. Albrecht, Z. B. Li, X. Y. Song, C. C. Zhang, B. Zhong, L. B. Guo, Yao Wang, W. D. Li, C. F. Redmer, Xiaocong Ai, B. X. Yu, Serkant Ali Cetin, Zhi Zeng, Gang Zhao, Y. B. Chen, Y. B. Liu, Ch. Rosner, Cui Li, Y. P. Guo, J. Z. Bai, Xiaofeng Zhu, J. Z. Zhang, P. Kiese, M. H. Gu, X. F. Wang, Bibo Ke, Ulrich Wiedner, P. L. Wang, T. Ma, S. L. Olsen, Q. M. Ma, A. Zhemchugov, X. T. Huang, Y. J. Mao, A. A. Zafar, G. Rong, Z. P. Zhang, R. A. Briere, H. Y. Sheng, H. X. Yang, J. Y. Liu, I. Garzia, X. Fang, B. Kloss, Z. Y. Wang, J. S. Huang, X. S. Jiang, C. X. Yu, S. Qian, Q. An, Jialun Ping, X. Y. Niu, Y. Yuan, Y. S. Zhu, I. Tapan, Y. H. Yan, K. Zhang, Z. Haddadi, W. B. Yan, X. Y. Zhang, D. W. Bennett, Zujian Wang, H. S. Chen, C. X. Liu, H. L. Dai, Igor Boyko, L. Yang, Q. Gao, Y. N. Gao, Feng Liu, X. B. Ji, M. Tiemens, Y. Zhang, P. Patteri, Yu Zhang, B. Zheng, R. G. Ping, J. W. Zhao, F. Bianchi, M. Lara, J. B. Liu, Y. C. Zhu, Y. J. Sun, E. Boger, Huihui Liu, J. Z. Fan, J. P. Liu, M. Ablikim, K. Goetzen, O. Cakir, X. Y. Ma, X. K. Chu, O. B. Kolcu, J. G. Messchendorp, D. Y. Liu, E. H. Thorndike, H. Xiao, S. Pacetti, L. Q. Qin, T. Held, X. N. Ma, Y. T. Liang, J. P. Dai, A. Zallo, Qiunan Xu, M. Fritsch, W. Gradl, M. Ripka, Chi Zhang, Zhiqing Liu, M. Kavatsyuk, Peilian Liu, Lingxuan Zhang, B. X. Zhang, Ke Li, G. S. Huang, T. Johansson, J. F. Chang, Q. L. Xiu, Zhiyong Zhang, D. Y. Wang, Z. H. Qin, F. Feldbauer, Krisztian Peters, J. Min, J. H. Liu, Ke Wang, G. R. Liao, B. Kopf, X. C. Chen, K. L. He, X. Cai, M. Z. Wang, Jimin Zhao, R. Poling, P. F. Duan, X. Q. Hao, Fenfen An, B. L. Wang, T. C. Zhao, Z. Ning, O. Fedorov, R. Baldini Ferroli, X. N. Li, M. Greco, Haiping Peng, X. C. Lou, L. Zotti, Jing Dong, F. A. Harris, Shan Wang, Xiao-Rui Lyu, F. Li, F. C. Ma, G. S. Varner, J. F. Qiu, F. Nerling, X. L. Ji, G. A. Chelkov, Talib Hussain, Y. J. Mo, T. Weber, A. Yuncu, Liqing Xu, M. Ullrich, Z. J. Xiao, X. Y. Shen, Y. G. Xie, Y. Ding, B. J. Liu, S. X. Du, W. Kühn, Z. A. Zhu, Z. L. Dou, L. Fava, C. P. Shen, Magnus Wolke, Y. F. Liang, J. M. Bian, S. J. Zhao, Q. J. Xu, J. C. Chen, Nasser Kalantar-Nayestanaki, D. P. Jin, C. Morales Morales, Yue Pan, Dayong Wang, N. Qin, Y. X. Xia, S. H. Zhu, X. K. Zhou, Andrzej Kupsc, W. L. Yuan, M. L. Chen, Jie Zhao, D. X. Lin, H. M. Hu, J. W. Zhang, I. Uman, and P. Larin

Subjects
Physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Analytical chemistry, Sigma, 01 natural sciences, Baryon, Angular distribution, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, 010306 general physics, Bar (unit)
Abstract

We study the decays of the charmonium resonances J/psi and psi(3686) to the final states Xi(-)(Xi) over bar (+), S(1385)(-/+)(Sigma) over bar (1385)(+/-) based on a single baryon tag method using data samples of (223.7 +/- 1.4) x 10(6) J/psi and (106.4 +/- 0.9) x 10(6) psi(3686) events collected with the BESIII detector at the BEPCII collider. The decay psi(3686) -> Sigma(1385)(-/+)(Sigma) over bar (1385)(+/-) is observed for the first time, and the measurements of the other processes, including the branching fractions and angular distributions, are in good agreement with, and much more precise than, the previously published results. Additionally, the ratios B(psi(3686)->Xi(-)(Xi) over bar (+))/B(J/psi ->Xi(-)(Xi) over bar (+)), B(psi(3686)->Sigma(1385)(-)(Sigma) over bar (1385)(+))/B(J/psi ->Sigma(1385)(-)(Sigma) over bar (1385)(+)) and B(psi(3686)->Sigma(1385)(+)(Sigma) over bar (1385)(-))/B(J/psi ->Sigma(1385)(+)(Sigma) over bar (1385)(-)) are detetmind

Published
2016

37. Search for a lightCP-odd Higgs boson in radiative decays ofJ/ψ

Author

H. J. Lu, J. G. Lu, F. E. Maas, T. Hu, Z. H. Wang, M. H. Gu, A. Calcaterra, Z. G. Zhao, H. Y. Sheng, H. H. Zhang, Guangming Huang, P. X. Shen, C. F. Redmer, X. T. Huang, C. X. Yu, M. Ablikim, A. A. Zafar, G. Rong, Z. J. Sun, H. Loehner, R. Kliemt, S. Han, Z. Wu, L. H. Wu, L. W. Jiang, M. Savrie, B. Zheng, R. G. Ping, X. Y. Gao, I. Tapan, Y. H. Yan, A. Q. Guo, P. L. Wang, J. W. Zhao, Jie Yu, Y. C. Zhu, J. H. Yin, C. Hu, X. Tang, Zhiqing Zhang, Hai-Bo Li, A. G. Denig, C. L. Luo, K. H. Rashid, X. K. Chu, J. Y. Liu, M. Shao, Y. T. Gu, Y. X. Xia, S. H. Zhu, X. K. Zhou, W. M. Song, Z. G. Wang, J. H. Liu, C. C. Zhang, B. Zhong, L. B. Guo, K. J. Zhu, Y. P. Guo, F. De Mori, K. Li, Fang Liu, M. Bertani, Ke Wang, H. Xiao, T. Held, Mario Greco, Z. P. Zhang, Q. Gao, W. P. Wang, Z. H. Qin, E. Fioravanti, G. Cibinetto, H. Y. Zhang, X. L. Ji, Ulrich Wiedner, Y. Zhang, I. Denysenko, T. Ma, G. A. Chelkov, Q. An, R. Poling, P. F. Duan, Y. Ding, Yuehong Xie, L. G. Xia, J. Z. Fan, A. Zhemchugov, W. G. Li, F. Li, F. C. Ma, Z. Haddadi, Jie Zhao, D. W. Bennett, Talib Hussain, M. Maggiora, Ling Zhao, Zujian Wang, X. L. Kang, L. Yang, Fenfen An, B. L. Wang, X. M. Li, A. Sarantsev, D. H. Wei, H. H. Liu, S. Spataro, D. X. Lin, C. Leng, J. S. Lange, X. Y. Zhou, Peilian Liu, S. Qian, Jialun Ping, X. P. Xu, G. F. Chen, T. C. Zhao, H. M. Hu, G. Li, A. Hafner, Q. Zhao, D. J. Ambrose, G. F. Xu, S. Jin, E. H. Thorndike, Lei Zhao, Zhiyong Zhang, Z. L. Hou, Yang Yang, Lei Li, H. M. Liu, J. F. Hu, A. Yuncu, Q. W. Zhao, J. W. Zhang, J. C. Li, J. Zhuang, Yunlong Zhang, Sai-Juan Chen, C. D. Fu, J. F. Qiu, Xiaocong Ai, L. Fava, Y. Z. Sun, B. Y. Zhang, LiLi Zhang, Y. H. Guan, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, Xiang Zhou, D. Bettoni, Y. B. Zhao, J. Y. Zhang, G. F. Cao, W. Shan, Gang Zhao, C. Q. Feng, X. R. Chen, Z. Y. Deng, C. Z. Yuan, Tao Luo, Y. J. Mao, X. F. Wang, Z. T. Sun, Z. A. Liu, Y. Guo, S. X. Du, W. Kühn, Z. A. Zhu, K. Zhang, Krisztian Peters, J. L. Zhang, B. X. Yu, Zhi Zeng, F. Nerling, J. Dong, M. H. Ye, L. D. Liu, M. Albrecht, Z. L. Dou, H. X. Yang, I. Garzia, X. Y. Zhang, X. Liu, M. Lara, J. B. Liu, Y. J. Sun, V. Prasad, E. Boger, Y. P. Lu, X. Y. Song, W. Gradl, I. Uman, Q. M. Ma, H. S. Chen, M. Ripka, L. Q. Qin, Y. Q. Wang, Q. Ouyang, S. S. Fang, Xingguo Li, X. Fang, Jianping Zheng, Y. Ban, P. Weidenkaff, S. Zhu, H. L. Dai, Igor Boyko, Y. B. Liu, Y. K. Heng, L. Y. Dong, Shan Wang, S. Nisar, H. L. Ma, C. J. Tang, Y. Hu, Xiao-Rui Lyu, D. M. Li, S. P. Wen, Kai Liu, W. D. Li, D. Y. Wang, B. Kloss, M. Qi, Jin Li, X. Y. Niu, J. Q. Zhang, H. Muramatsu, H. J. Yang, F. Feldbauer, J. P. Liu, X. S. Qin, X. R. Zhou, J. Z. Bai, R. Baldini Ferroli, Cheng Li, O. B. Kolcu, M. Pelizaeus, B. Wang, Feng Liu, W. J. Zheng, Bibo Ke, J. G. Messchendorp, Y. Yuan, Y. S. Zhu, D. Xiao, W. B. Yan, C. P. Shen, J. P. Dai, X. L. Luo, X. Y. Jiang, P. Larin, J. J. Zhang, M. Destefanis, X. L. Gao, G. S. Varner, P. R. Li, M. N. Achasov, X. N. Li, Y. Gao, S. B. Liu, Q. Liu, Giulietto Felici, Haiping Peng, X. C. Chen, M. G. Zhao, Y. J. Mo, X. B. Ji, J. S. Huang, F. Bianchi, X. D. Ruan, C. Dong, S. Sosio, S. Pacetti, Y. N. Zhang, P. Patteri, C. X. Liu, Y. Nefedov, G. X. Sun, J. V. Bennett, Li Yan, J. M. Bian, S. J. Zhao, L. L. Ma, Joachim Pettersson, T. Weber, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Q. P. Ji, Serkant Ali Cetin, A. Amoroso, Liqing Xu, X. Y. Shen, D. Y. Liu, Q. J. Xu, K. Goetzen, Cui Li, V. Santoro, M. Y. Dong, J. C. Chen, Xuanhong Lou, A. Dbeyssi, C. Morales Morales, Yue Pan, M. Tiemens, J. B. Jiao, X. N. Ma, H. B. Liu, G. R. Liao, M. Kornicer, X. H. Mo, L. S. Wang, N. Kalantar-Nayestanaki, J. H. Zou, Y. T. Liang, A. Julin, Q. L. Xiu, A. Zallo, L. L. Wang, H. Cai, J. Min, S. S. Sun, M. Fritsch, M. Kavatsyuk, R. E. Mitchell, B. Kopf, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, B. X. Zhang, N. Yu. Muchnoi, K. L. He, X. S. Kang, Y. H. Zhang, S. Schumann, M. Z. Wang, Yao Wang, Jimin Zhao, Z. Y. Wang, Magnus Wolke, Y. F. Liang, D. P. Jin, Chi Zhang, Brent J. Liu, J. F. Sun, S. Marcello, Y. Zeng, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Dayong Wang, N. Qin, Zhiqing Liu, T. Johansson, J. F. Chang, X. Cai, Z. Ning, Y. Y. Yang, L. Zotti, F. A. Harris, M. Ullrich, Z. J. Xiao, H. Liang, I. B. Nikolaev, Z. Gao, S. L. Niu, F. Y. Li, W. C. Yan, X. Q. Li, Yu Zhang, L. P. Zhou, Z. P. Mao, K. Y. Liu, Z. B. Li, H. P. Cheng, J. Fang, Tao Li, Y. F. Wang, Ch. Rosner, X. Y. Ma, W. X. Gong, Yaquan Fang, K. Schoenning, B. S. Zou, P. Kiese, S. L. Olsen, R. A. Briere, G. S. Huang, X. S. Jiang, O. Cakir, Andrzej Kupsc, W. L. Yuan, and M. L. Chen

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Physics beyond the Standard Model, Electron–positron annihilation, Supersymmetry, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, Higgs boson, High Energy Physics::Experiment, Singlet state, 010306 general physics, Minimal Supersymmetric Standard Model
Abstract

We search for a light Higgs boson A(0) in the fully reconstructed decay chain of J/psi -> gamma A(0), A(0)-> mu(+)mu(-) using (225.0 +/- 2.8) x 10(6) J/psi events collected by the BESIII experiment. The A(0) is a hypothetical CP-odd light Higgs boson predicted by many extensions of the Standard Model including two spin-0 doublets plus an extra singlet. We find no evidence for A(0) production and set 90% confidence-level upper limits on the product branching fraction B(J/psi -> gamma A(0)) x B(A(0)-> mu(+)mu(-)) in the range of (2.8-495.3) x 10(-8) for 0.212

Published
2016

38. Observation of the Singly Cabibbo-Suppressed DecayD+→ωπ+and Evidence forD0→ωπ0

Author

F. Li, F. C. Ma, X. H. Mo, L. S. Wang, N. Kalantar-Nayestanaki, M. H. Ye, J. Min, J. H. Liu, D. J. Ambrose, Yaquan Fang, J. F. Qiu, B. Kopf, Ke Wang, Bibo Ke, L. Fava, J. J. Liang, Xiaocong Ai, J. M. Bian, W. B. Yan, Zhenyu Zhang, S. J. Zhao, M. H. Gu, K. L. He, M. N. Achasov, F. Nerling, G. F. Xu, M. Albrecht, H. Y. Sheng, M. Z. Wang, L. L. Wang, H. Cai, C. X. Yu, P. F. Duan, K. Schoenning, B. S. Zou, Giulietto Felici, S. Jin, W. D. Li, Jimin Zhao, J. Z. Bai, S. Pacetti, Y. Ding, Y. H. Guan, Magnus Wolke, Y. F. Liang, Fenfen An, D. P. Jin, C. Leng, Dayong Wang, N. Qin, B. L. Wang, W. C. Yan, I. Uman, B. Zheng, R. G. Ping, Y. J. Mao, H. X. Yang, Y. Guo, Z. J. Xiao, J. C. Chen, J. C. Li, Kai Liu, I. Garzia, Xuanhong Lou, T. C. Zhao, Yu Zhang, L. P. Zhou, P. L. Wang, E. H. Thorndike, X. L. Luo, X. Y. Song, Z. T. Sun, Ke Li, Z. A. Liu, L. Q. Qin, J. Zhuang, X. Y. Jiang, H. L. Ma, M. Bertani, M. X. Luo, Z. P. Mao, Z. Haddadi, D. M. Li, F. Feldbauer, C. Morales Morales, V. Prasad, Y. Gao, Serkant Ali Cetin, H. P. Cheng, Y. Ban, P. Weidenkaff, L. Yang, Jian Wei, Y. Nefedov, I. Tapan, Yucheng Huang, D. V. Dedovich, X. B. Ji, Shan Wang, Xiao-Rui Lyu, J. Fang, Tao Li, Z. Gao, Y. H. Yan, X. C. Chen, W. P. Wang, Huihui Liu, J. P. Liu, X. K. Zhou, Fang Liu, F. Bianchi, S. P. Wen, X. S. Qin, X. R. Zhou, Z. A. Zhu, J. W. Zhao, S. Schumann, J. Q. Zhang, M. M. Ma, Jin Li, M. Pelizaeus, Ch. Rosner, P. R. Li, Y. F. Wang, Krisztian Peters, I. Denysenko, Y. C. Zhu, P. Patteri, J. G. Messchendorp, J. P. Dai, Cheng Li, S. Qian, Jialun Ping, R. Baldini Ferroli, K. Goetzen, W. Kuehn, W. Gradl, G. S. Varner, K. Zhang, X. Y. Zhang, X. Liu, M. Ripka, Yao Wang, M. Shi, J. Y. Liu, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, D. Y. Wang, M. Qi, Hai-Bo Li, A. G. Denig, X. K. Chu, L. Zotti, H. Liang, Q. J. Xu, M. Lara, Q. P. Ji, H. J. Lu, H. Xiao, E. Boger, J. G. Lu, Cui Li, H. J. Yang, C. Hu, F. A. Harris, J. B. Liu, B. Y. Zhang, A. Q. Guo, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, T. Held, C. L. Luo, M. G. Zhao, R. P. Guo, M. Y. Dong, X. Tang, Y. N. Zhang, T. Hussain, L. D. Liu, L. Y. Dong, X. Y. Ma, Guangshun Huang, M. Tiemens, L. Yan, C. C. Zhang, Y. J. Sun, Y. P. Lu, F. E. Maas, T. Hu, X. N. Li, H. B. Liu, Haiping Peng, W. M. Song, Tao Luo, Z. Y. Wang, J. H. Zou, W. X. Gong, Z. G. Wang, H. Y. Zhang, X. N. Ma, G. Li, C. D. Fu, X. L. Ji, Q. Gao, Y. Zhang, Q. An, Yuehong Xie, D. Y. Liu, C. Q. Feng, H. J. Li, B. Zhong, L. B. Guo, S. S. Sun, G. R. Liao, J. F. Hu, J. B. Jiao, H. Muramatsu, Ulrich Wiedner, J. Z. Fan, X. R. Chen, L. Xia, A. Yuncu, Y. T. Liang, A. Zallo, B. X. Yu, Guangming Huang, Z. H. Qin, Q. L. Xiu, Y. Pan, Peilian Liu, Zhi Zeng, P. X. Shen, G. F. Chen, M. Kornicer, Z. Y. Deng, S. B. Liu, Z. Wu, J. Y. Zhang, W. J. Zheng, W. G. Li, L. W. Jiang, T. Ma, M. Fritsch, LiLi Zhang, M. Kavatsyuk, X. M. Li, R. E. Mitchell, G. A. Chelkov, F. De Mori, Zhiqing Zhang, Yanwei Wang, G. X. Sun, J. V. Bennett, X. H. Sun, S. Spataro, X. P. Xu, Orhan Cakir, Xingguo Li, P. Kiese, J. J. Xu, Q. Ouyang, H. S. Chen, H. L. Dai, Igor Boyko, X. Y. Zhou, A. A. Zafar, Y. K. Heng, B. X. Zhang, S. X. Du, S. S. Fang, K. J. Zhu, S. L. Olsen, Lei Li, H. M. Liu, R. A. Briere, Z. Jiao, Fu-Hu Liu, D. H. Zhang, A. Calcaterra, Z. G. Zhao, J. S. Huang, Z. L. Dou, A. Hafner, Q. Zhao, Y. B. Liu, Y. Z. Sun, C. X. Liu, I. B. Nikolaev, K. H. Rashid, M. Maggiora, Ling Zhao, X. S. Jiang, K. Moriya, G. F. Cao, Xiang Zhou, H. H. Zhang, X. Fang, Lei Zhao, Z. J. Sun, H. Loehner, Feng Liu, Z. L. Hou, Yang Yang, R. Kliemt, Gang Zhao, J. H. Yin, X. F. Wang, J. F. Sun, Jun-Yi Zhang, Y. P. Guo, C. Z. Yuan, S. J. Chen, Q. M. Ma, Jie Yu, M. Shao, Y. T. Gu, S. L. Niu, Z. P. Zhang, F. Y. Li, C. Dong, S. Sosio, X. Q. Li, M. Greco, Z. H. Wang, S. Marcello, D. W. Bennett, Zujian Wang, B. Kloss, Y. Zeng, X. Y. Niu, K. Y. Liu, G. Cibinetto, Z. B. Li, C. F. Redmer, E. Fioravanti, Y. Yuan, Y. S. Zhu, Joachim Pettersson, Xiangdong Ruan, Y. B. Zhao, X. T. Huang, Q. Liu, W. Shan, J. Dong, M. Ablikim, G. Rong, Yunlong Zhang, Y. Q. Wang, S. Nisar, D. Bettoni, C. J. Tang, J. L. Zhang, Y. Hu, L. L. Ma, X. L. Kang, A. Sarantsev, D. H. Wei, R. Poling, Jianping Zheng, Y. B. Chen, S. Zhu, S. Han, Xiaofeng Zhu, J. Z. Zhang, J. S. Lange, B. Wang, Q. W. Zhao, D. Xiao, L. G. Xia, A. Amoroso, J. J. Zhang, M. Destefanis, Si Chen, L. H. Wu, A. Dbeyssi, M. Savrie, A. Julin, X. Y. Gao, Chi Zhang, Brent J. Liu, C. P. Shen, L. J. Wu, Y. J. Mo, Y. X. Xia, S. H. Zhu, T. Weber, Liqing Xu, X. Y. Shen, Y. Y. Yang, P. Larin, Jie Zhao, D. X. Lin, Alexey Zhemchugov, H. M. Hu, J. W. Zhang, Z. Ning, Xiaozhong Huang, Andrzej Kupsc, W. L. Yuan, M. L. Chen, Xian Gao, M. Ullrich, Zhiqing Liu, T. Johansson, J. F. Chang, O. B. Kolcu, and X. Cai

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, General Physics and Astronomy, Sigma, 010306 general physics, 01 natural sciences, Omega
Abstract

Based on 2.93 fb(-1) e(+)e(-) collision data taken at center-of-mass energy of 3.773 GeV by the BESIII detector, we report searches for the singly Cabibbo-suppressed decays D+ -> omega pi(+) and D-0 -> omega pi(0). A double tag technique is used to measure the absolute branching fractions B(D+ -> omega pi(+)) = (2.79 +/- 0.57 +/- 0.16) x 10(-4) and B(D-0 +/- omega pi(0)) = (1.17 +/- 0.34 +/- 0.07) x 10(-4), with statistical significances of 5.5 sigma and 4.1 sigma, where the first and second uncertainties are statistical and systematic, respectively.

Published
2016

39. Measurement of Azimuthal Asymmetries in Inclusive Charged Dipion Production ine+e−Annihilations ats=3.65 GeV

Author

J. Zhuang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, H. B. Li, A. G. Denig, C. L. Luo, C. C. Zhang, S. Han, B. Zhong, L. B. Guo, H. Muramatsu, Ulrich Wiedner, M. Kornicer, T. Ma, Orhan Cakir, F. Li, E. H. Thorndike, Bibo Ke, Jin Li, A. Calcaterra, Z. G. Zhao, P. Kiese, W. G. Li, Y. H. Guan, H. H. Zhang, Z. J. Sun, H. Loehner, W. B. Yan, P. Larin, Kai Liu, M. N. Achasov, L. H. Wu, M. Savrie, L. Q. Qin, F. Feldbauer, F. C. Ma, I. B. Nikolaev, S. L. Olsen, R. A. Briere, X. Fang, Shan Wang, Xiao-Rui Lyu, X. S. Jiang, M. Bertani, X. M. Li, J. Y. Liu, Giulietto Felici, S. Pacetti, S. Spataro, Krisztian Peters, Q. Liu, G. Li, X. P. Xu, X. Y. Gao, X. D. Ruan, X. C. Chen, R. Baldini Ferroli, J. S. Huang, Ke Li, C. Dong, S. Sosio, Q. Gao, Y. N. Gao, Z. Haddadi, X. K. Chu, Feng Liu, C. D. Fu, C. Q. Feng, Yaquan Fang, S. Qian, Y. Nefedov, L. L. Ma, Lei Li, Zhiqing Liu, X. R. Chen, M. Ablikim, Y. Zhang, Y. J. Mo, Q. An, L. Yang, C. Leng, C. X. Liu, J. H. Yin, M. Shao, Y. T. Gu, H. M. Liu, Peilian Liu, T. Johansson, Jialun Ping, M. G. Zhao, X. K. Zhou, Fang Liu, I. Denysenko, L. G. Xia, Z. Y. Deng, J. F. Chang, J. F. Qiu, J. Z. Fan, Y. P. Guo, G. S. Varner, A. Amoroso, M. Maggiora, Ling Zhao, Lingxuan Zhang, Zhiyong Zhang, Q. L. Xiu, K. Zhang, Jie Zhao, D. X. Lin, X. Y. Zhang, K. Schoenning, B. S. Zou, Y. N. Zhang, A. A. Zafar, H. S. Chen, Joachim Pettersson, L. Fava, Y. F. Wang, G. F. Cao, Alexey Zhemchugov, H. M. Hu, Cui Li, B. Y. Zhang, E. Fioravanti, Lei Zhao, Xingguo Li, A. Dbeyssi, T. Weber, Q. P. Ji, Y. J. Mao, J. M. Bian, Z. L. Hou, Z. P. Zhang, M. Lara, H. X. Yang, Yang Yang, F. Nerling, T. Hussain, J. B. Liu, O. B. Kolcu, I. Garzia, S. J. Zhao, W. Gradl, Y. J. Sun, M. H. Gu, Yunlong Zhang, H. Liang, G. R. Liao, K. Goetzen, R. Kliemt, J. F. Hu, Liqing Xu, X. Cai, X. Y. Shen, X. Y. Ma, V. Santoro, M. Ripka, J. Q. Zhang, K. H. Rashid, S. Schumann, J. W. Zhang, W. X. Gong, E. E. Eren, X. L. Kang, X. N. Li, A. Yuncu, M. Y. Dong, D. Bettoni, Y. P. Lu, A. Sarantsev, D. H. Wei, J. S. Lange, D. W. Bennett, Zujian Wang, H. L. Ma, H. Y. Sheng, Y. H. Zheng, Cong-Feng Qiao, H. B. Liu, Huihui Liu, O. Albayrak, Y. Ding, B. J. Liu, J. L. Zhang, Q. W. Zhao, Jie Yu, X. Q. Hao, J. P. Liu, R. Poling, H. J. Lu, J. G. Lu, D. Y. Wang, Q. J. Xu, C. X. Yu, Yao Wang, Haiping Peng, J. H. Zou, D. M. Li, Jianping Zheng, J. G. Messchendorp, J. Min, J. C. Chen, S. Zhu, Q. Ouyang, N. Yu. Muchnoi, Xuanhong Lou, Z. Ning, J. P. Dai, X. S. Kang, W. Kühn, F. E. Maas, Z. A. Zhu, A. Julin, S. J. Chen, M. Pelizaeus, T. Hu, S. S. Sun, Nasser Kalantar-Nayestanaki, Y. H. Zhang, B. Zheng, J. H. Liu, F. De Mori, S. S. Fang, X. H. Mo, L. S. Wang, Y. X. Xia, S. H. Zhu, Y. X. Yang, X. Y. Jiang, J. F. Sun, M. H. Ye, B. Kopf, R. G. Ping, Z. T. Sun, Z. A. Liu, X. L. Ji, S. L. Niu, K. J. Zhu, Ke Wang, W. C. Yan, C. Morales Morales, X. Q. He, Yu Zhang, C. Z. Yuan, A. Q. Guo, J. J. Zhang, Y. B. Liu, F. Y. Li, R. E. Mitchell, X. Q. Li, V. Prasad, P. R. Li, M. Greco, G. F. Xu, Z. Y. Wang, Z. G. Wang, L. P. Zhou, C. P. Shen, K. L. He, A. Hafner, S. Marcello, W. M. Song, M. Destefanis, L. L. Wang, H. Cai, P. L. Wang, G. Cibinetto, S. Jin, H. Y. Zhang, Y. Ban, Guangming Huang, P. Weidenkaff, Q. Zhao, Y. Zeng, Z. P. Mao, C. Hu, P. X. Shen, Y. Z. Sun, X. Tang, Z. Wu, X. Y. Zhou, M. Z. Wang, Jimin Zhao, G. F. Chen, X. L. Luo, H. P. Cheng, S. P. Wen, J. Fang, Tao Li, L. W. Jiang, Xiang Zhou, Y. Guo, J. Z. Bai, Z. H. Wang, Z. H. Qin, X. Liu, L. D. Liu, J. Y. Zhang, Z. Gao, X. N. Ma, Gang Zhao, X. S. Qin, X. R. Zhou, X. Y. Song, Y. T. Liang, Zhiqing Zhang, F. A. Harris, L. Y. Dong, Y. B. Chen, G. X. Sun, J. V. Bennett, W. P. Wang, F. Bianchi, M. Qi, Li Yan, K. Y. Liu, Xiaofeng Zhu, J. Z. Zhang, C. F. Redmer, Xiaocong Ai, Ch. Rosner, Guangshun Huang, H. J. Yang, A. Zallo, W. J. Zheng, Cheng Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Z. B. Li, P. F. Duan, L. Zotti, Y. G. Xie, Y. K. Heng, X. T. Huang, G. Rong, Y. B. Zhao, X. F. Wang, X. B. Ji, M. Tiemens, Fenfen An, W. Shan, K. Moriya, J. Dong, P. Patteri, M. Fritsch, G. A. Chelkov, S. X. Du, Y. Q. Wang, Q. M. Ma, M. Kavatsyuk, S. Nisar, C. J. Tang, Chi Zhang, Y. Hu, Serkant Ali Cetin, B. Kloss, S. B. Liu, B. Wang, X. Y. Niu, D. Xiao, B. X. Zhang, Y. Yuan, Y. S. Zhu, J. B. Jiao, T. C. Zhao, Tao Luo, B. X. Yu, H. L. Dai, Igor Boyko, I. Tapan, Y. H. Yan, J. W. Zhao, Y. C. Zhu, H. Xiao, E. Boger, T. Held, D. J. Ambrose, M. Albrecht, W. D. Li, I. Uman, M. Ullrich, Z. J. Xiao, Magnus Wolke, Y. F. Liang, D. P. Jin, Dayong Wang, N. Qin, Andrzej Kupsc, W. L. Yuan, M. L. Chen, and J. C. Li

Subjects
Quark, Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, Electron–positron annihilation, General Physics and Astronomy, Deep inelastic scattering, 01 natural sciences, Asymmetry, Azimuth, Nuclear physics, Pion, 0103 physical sciences, Fragmentation function, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, media_common
Abstract

We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e(+) e(-) -> pi pi X based on a data set of 62 pb(-1) at the center-of-mass energy of 3.65 GeV collected with the SESIII detector. These asymmetries can be attributed to the Collins fragmentation function. We observe a nonzero asymmetry, which increases with increasing pion momentum. As our energy scale is close to that of the existing semi-inclusive deep inelastic scattering experimental data, the measured asymmetries are important inputs for the global analysis of extracting the quark transversity distribution inside the nucleon and are valuable to explore the energy evolution of the spin-dependent fragmentation function.

Published
2016

40. Observation of an Anomalous Line Shape of the η′π+π- Mass Spectrum near the p p Mass Threshold in J /ψ →γη′π+π

Author

M, Ablikim, M N, Achasov, S, Ahmed, X C, Ai, O, Albayrak, M, Albrecht, D J, Ambrose, A, Amoroso, F F, An, Q, An, J Z, Bai, R, Baldini Ferroli, Y, Ban, D W, Bennett, J V, Bennett, N, Berger, M, Bertani, D, Bettoni, J M, Bian, F, Bianchi, E, Boger, I, Boyko, R A, Briere, H, Cai, X, Cai, O, Cakir, A, Calcaterra, G F, Cao, S A, Cetin, J F, Chang, G, Chelkov, G, Chen, H S, Chen, H Y, Chen, J C, Chen, M L, Chen, S, Chen, S J, Chen, X, Chen, X R, Chen, Y B, Chen, H P, Cheng, X K, Chu, G, Cibinetto, H L, Dai, J P, Dai, A, Dbeyssi, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, F, De Mori, Y, Ding, C, Dong, J, Dong, L Y, Dong, M Y, Dong, Z L, Dou, S X, Du, P F, Duan, J Z, Fan, J, Fang, S S, Fang, X, Fang, Y, Fang, R, Farinelli, L, Fava, O, Fedorov, F, Feldbauer, G, Felici, C Q, Feng, E, Fioravanti, M, Fritsch, C D, Fu, Q, Gao, X L, Gao, X Y, Gao, Y, Gao, Z, Gao, I, Garzia, K, Goetzen, L, Gong, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, R P, Guo, Y, Guo, Y P, Guo, Z, Haddadi, A, Hafner, S, Han, X Q, Hao, F A, Harris, K L, He, F H, Heinsius, T, Held, Y K, Heng, T, Holtmann, Z L, Hou, C, Hu, H M, Hu, J F, Hu, T, Hu, Y, Hu, G S, Huang, Y P, Huang, J S, Huang, X T, Huang, X Z, Huang, Y, Huang, Z L, Huang, T, Hussain, Q, Ji, Q P, Ji, X B, Ji, X L, Ji, L W, Jiang, X S, Jiang, X Y, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, T, Johansson, A, Julin, N, Kalantar-Nayestanaki, X L, Kang, X S, Kang, M, Kavatsyuk, B C, Ke, P, Kiese, R, Kliemt, B, Kloss, O B, Kolcu, B, Kopf, M, Kornicer, A, Kupsc, W, Kühn, J S, Lange, M, Lara, P, Larin, H, Leithoff, C, Leng, C, Li, Cheng, Li, D M, Li, F, Li, F Y, Li, G, Li, H B, Li, H J, Li, J C, Li, Jin, Li, K, Li, Lei, Li, P R, Li, Q Y, Li, T, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, Y B, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, D X, Lin, B, Liu, B J, Liu, C X, Liu, D, Liu, F H, Liu, Fang, Liu, Feng, Liu, H B, Liu, H H, Liu, H M, Liu, J, Liu, J B, Liu, J P, Liu, J Y, Liu, K, Liu, K Y, Liu, L D, Liu, P L, Liu, Q, Liu, S B, Liu, X, Liu, Y B, Liu, Y Y, Liu, Z A, Liu, Zhiqing, Liu, H, Loehner, X C, Lou, H J, Lu, J G, Lu, Y, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, X R, Lyu, F C, Ma, H L, Ma, L L, Ma, M M, Ma, Q M, Ma, T, Ma, X N, Ma, X Y, Ma, Y M, Ma, F E, Maas, M, Maggiora, Q A, Malik, Y J, Mao, Z P, Mao, S, Marcello, J G, Messchendorp, G, Mezzadri, J, Min, T J, Min, R E, Mitchell, X H, Mo, Y J, Mo, C, Morales Morales, N Yu, Muchnoi, H, Muramatsu, P, Musiol, Y, Nefedov, F, Nerling, I B, Nikolaev, Z, Ning, S, Nisar, S L, Niu, X Y, Niu, S L, Olsen, Q, Ouyang, S, Pacetti, Y, Pan, P, Patteri, M, Pelizaeus, H P, Peng, K, Peters, J, Pettersson, J L, Ping, R G, Ping, R, Poling, V, Prasad, H R, Qi, M, Qi, S, Qian, C F, Qiao, L Q, Qin, N, Qin, X S, Qin, Z H, Qin, J F, Qiu, K H, Rashid, C F, Redmer, M, Ripka, G, Rong, Ch, Rosner, X D, Ruan, A, Sarantsev, M, Savrié, C, Schnier, K, Schoenning, S, Schumann, W, Shan, M, Shao, C P, Shen, P X, Shen, X Y, Shen, H Y, Sheng, M, Shi, W M, Song, X Y, Song, S, Sosio, S, Spataro, G X, Sun, J F, Sun, S S, Sun, X H, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, I, Tapan, E H, Thorndike, M, Tiemens, I, Uman, G S, Varner, B, Wang, B L, Wang, D, Wang, D Y, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, S G, Wang, W, Wang, W P, Wang, X F, Wang, Y, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z H, Wang, Z Y, Wang, T, Weber, D H, Wei, J B, Wei, P, Weidenkaff, S P, Wen, U, Wiedner, M, Wolke, L H, Wu, L J, Wu, Z, Wu, L, Xia, L G, Xia, Y, Xia, D, Xiao, H, Xiao, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, J J, Xu, L, Xu, Q J, Xu, Q N, Xu, X P, Xu, L, Yan, W B, Yan, W C, Yan, Y H, Yan, H J, Yang, H X, Yang, L, Yang, Y X, Yang, M, Ye, M H, Ye, J H, Yin, B X, Yu, C X, Yu, J S, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A, Yuncu, A A, Zafar, A, Zallo, Y, Zeng, Z, Zeng, B X, Zhang, B Y, Zhang, C, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J J, Zhang, J L, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, K, Zhang, L, Zhang, S Q, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y N, Zhang, Y T, Zhang, Yu, Zhang, Z H, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, J W, Zhao, J Y, Zhao, J Z, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, Q W, Zhao, S J, Zhao, T C, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, W J, Zheng, Y H, Zheng, B, Zhong, L, Zhou, X, Zhou, X K, Zhou, X R, Zhou, X Y, Zhou, K, Zhu, K J, Zhu, S, Zhu, S H, Zhu, X L, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, L, Zotti, B S, Zou, and J H, Zou

Subjects
Physics and Astronomy (all)
Abstract

Using 1.09×10^{9} J/ψ events collected by the BESIII experiment in 2012, we study the J/ψ→γη^{'}π^{+}π^{-} process and observe a significant abrupt change in the slope of the η^{'}π^{+}π^{-} invariant mass distribution at the proton-antiproton (pp[over ¯]) mass threshold. We use two models to characterize the η^{'}π^{+}π^{-} line shape around 1.85 GeV/c^{2}: one that explicitly incorporates the opening of a decay threshold in the mass spectrum (Flatté formula), and another that is the coherent sum of two resonant amplitudes. Both fits show almost equally good agreement with data, and suggest the existence of either a broad state around 1.85 GeV/c^{2} with strong couplings to the pp[over ¯] final states or a narrow state just below the pp[over ¯] mass threshold. Although we cannot distinguish between the fits, either one supports the existence of a pp[over ¯] moleculelike state or bound state with greater than 7σ significance.

Published
2016

41. Measurement of the branching fraction for ψ(3770) → γχc0

Author

Guangshun Huang, L. Yan, S. Qian, Q. An, Jialun Ping, K. Zhang, X. Y. Zhang, C. Leng, Y. H. Guan, M. Lara, J. B. Liu, G. F. Xu, Kai Liu, S. Jin, Zhiqing Liu, P. Kiese, Yaquan Fang, K. Schoenning, Q. Y. Li, Y. J. Sun, B. S. Zou, G. Li, E. Boger, Y. P. Lu, Bibo Ke, T. Johansson, J. F. Chang, S. L. Olsen, R. A. Briere, H. H. Liu, S. B. Liu, J. Q. Zhang, J. C. Li, W. B. Yan, C. D. Fu, C. Q. Feng, O. B. Kolcu, S. Pacetti, X. R. Chen, I. Uman, J. Zhuang, Krisztian Peters, X. S. Jiang, X. Cai, Y. Nefedov, X. K. Chu, Z. Y. Deng, X. Y. Song, M. Y. Dong, S. Han, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, W. G. Li, X. Q. Hao, D. J. Ambrose, H. B. Liu, Xingguo Li, X. H. Mo, L. S. Wang, X. Liu, H. R. Qi, J. H. Zou, H. J. Lu, J. G. Lu, M. Maggiora, Ling Zhao, Lei Zhao, O. Cakir, Z. Ning, L. H. Wu, X. M. Li, M. H. Ye, R. Kliemt, Z. L. Hou, M. Savrie, S. Spataro, X. P. Xu, Y. H. Zheng, Peilian Liu, F. Li, F. C. Ma, Shan Wang, Xiao-Rui Lyu, Cui Li, F. E. Maas, T. Hu, Lingxuan Zhang, Zhiyong Zhang, Cong-Feng Qiao, R. Farinelli, O. Albayrak, X. Y. Gao, L. Xia, L. L. Wang, Jie Yu, G. R. Liao, J. F. Hu, S. S. Sun, R. E. Mitchell, Lei Li, H. M. Liu, H. L. Ma, Serkant Ali Cetin, H. Cai, Y. F. Wang, P. Larin, D. M. Li, N. Yu. Muchnoi, J. S. Huang, C. X. Liu, G. F. Cao, M. Albrecht, X. S. Kang, C. Z. Yuan, K. J. Zhu, K. Li, X. K. Zhou, Fang Liu, I. Denysenko, Xichao Ruan, M. H. Gu, H. Y. Sheng, Y. H. Zhang, M. Pelizaeus, X. Y. Ma, C. X. Yu, G. Cibinetto, S. J. Chen, A. Q. Guo, G. S. Varner, W. D. Li, B. Y. Zhang, E. E. Eren, W. X. Gong, P. X. Shen, Z. Wu, L. W. Jiang, Zhiqing Zhang, L. D. Liu, L. Y. Dong, B. Zheng, R. G. Ping, J. Y. Liu, K. Goetzen, W. Kuehn, W. M. Song, L. Zotti, J. F. Qiu, Z. Y. Wang, Z. H. Wang, A. Calcaterra, Z. G. Zhao, Z. T. Sun, W. J. Zheng, Z. A. Liu, V. Prasad, J. Z. Bai, C. F. Redmer, Xiaocong Ai, X. L. Ji, W. P. Wang, Q. Gao, Y. N. Gao, L. Fava, E. H. Thorndike, D. Y. Liu, Y. Zhang, J. B. Jiao, G. A. Chelkov, Y. Ban, P. Weidenkaff, Talib Hussain, F. A. Harris, H. H. Zhang, A. Zhemchugov, X. T. Huang, J. Z. Fan, F. Nerling, L. Q. Qin, A. A. Zafar, G. Rong, Z. H. Qin, S. P. Wen, I. Tapan, Z. J. Sun, H. Loehner, Y. J. Mao, S. L. Niu, F. Feldbauer, X. S. Qin, X. R. Zhou, J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, Y. X. Yang, Y. H. Yan, Cheng Li, J. W. Zhao, X. B. Ji, M. Tiemens, H. X. Yang, I. Garzia, F. Y. Li, A. Yuncu, Y. G. Xie, X. Q. Li, M. Greco, E. Fioravanti, Y. C. Zhu, X. C. Chen, P. Patteri, S. X. Du, H. B. Li, A. G. Denig, C. L. Luo, Y. X. Xia, S. H. Zhu, Z. L. Dou, A. Hafner, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, Q. Zhao, Y. Z. Sun, H. Xiao, J. S. Lange, Q. W. Zhao, Xiang Zhou, K. Y. Liu, T. Held, J. P. Liu, C. C. Zhang, Z. B. Li, Gang Zhao, B. Zhong, L. B. Guo, J. G. Messchendorp, J. P. Dai, Qiunan Xu, P. L. Wang, Chi Zhang, H. Muramatsu, Ulrich Wiedner, T. Ma, W. C. Yan, J. F. Sun, M. N. Achasov, L. P. Zhou, Y. M. Ma, Z. P. Mao, H. P. Cheng, J. Fang, Tao Li, Z. Gao, Ch. Rosner, H. Liang, I. B. Nikolaev, Q. P. Ji, S. Marcello, Jie Zhao, D. X. Lin, Y. Zeng, H. M. Hu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, M. Qi, J. W. Zhang, H. J. Yang, J. Min, B. Kopf, K. L. He, M. Z. Wang, Jimin Zhao, M. Bertani, Andrzej Kupsc, W. L. Yuan, Z. Haddadi, L. Yang, M. L. Chen, W. Gradl, M. Ripka, Magnus Wolke, D. Y. Wang, Y. F. Liang, D. P. Jin, Dayong Wang, N. Qin, J. H. Liu, Y. P. Guo, Ke Wang, Z. P. Zhang, M. Ullrich, Z. J. Xiao, P. F. Duan, Fenfen An, B. L. Wang, T. C. Zhao, D. W. Bennett, Zujian Wang, O. Fedorov, Tao Luo, B. X. Yu, Zhi Zeng, H. S. Chen, H. L. Dai, Igor Boyko, R. Baldini Ferroli, X. N. Li, Haiping Peng, X. C. Lou, Y. B. Zhao, W. Shan, J. Dong, Y. Q. Wang, S. Nisar, C. J. Tang, Y. Hu, J. M. Bian, S. J. Zhao, Q. J. Xu, J. C. Chen, Nasser Kalantar-Nayestanaki, C. Morales Morales, Jin Li, M. G. Zhao, Y. N. Zhang, B. Wang, Z. G. Wang, H. Y. Zhang, G. F. Chen, J. Y. Zhang, D. Xiao, G. Felici, X. Y. Jiang, Y. K. Heng, Q. Liu, L. L. Ma, L. Gong, L. G. Xia, A. Amoroso, A. Dbeyssi, M. Kornicer, A. Julin, F. De Mori, X. Y. Zhou, Y. Pan, X. F. Wang, Q. M. Ma, G. X. Sun, J. V. Bennett, B. Kloss, X. Y. Niu, Y. Yuan, Y. S. Zhu, Yu Zhang, Q. L. Xiu, Z. Jiao, Fu-Hu Liu, D. H. Zhang, X. L. Luo, F. Bianchi, C. Hu, X. Tang, Q. Ouyang, S. S. Fang, Y. B. Liu, X. L. Gao, C. Dong, S. Sosio, Joachim Pettersson, Y. N. Guo, Yunlong Zhang, D. Bettoni, J. L. Zhang, R. Poling, Jianping Zheng, S. Zhu, J. J. Zhang, M. Destefanis, Y. J. Mo, T. Weber, Liqing Xu, X. Y. Shen, V. Santoro, Y. Ding, B. J. Liu, Z. A. Zhu, C. P. Shen, S. Schumann, Yao Wang, X. Fang, Feng Liu, M. Ablikim, X. N. Ma, Y. T. Liang, A. Zallo, M. Fritsch, M. Kavatsyuk, and B. X. Zhang

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, BESIII, детектор, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Monte Carlo method, Detector, Collision, 01 natural sciences, lcsh:QC1-999, NO, Data set, Nuclear physics, BEPCII, коллайдер, 0103 physical sciences, 010306 general physics, lcsh:Physics
Abstract

Kolcu, Onur Buğra (Arel Author) --- Makale 70 yazarlıdır., By analyzing a data set of 2.92fb-1 of e+e- collision data taken at s=3.773GeV and 106.41×106 ?(3686) decays taken at s=3.686GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ?(3770)›??c0 to be B(?(3770)›??c0)=(6.88±0.28±0.67)×10-3 and ?[?(3770)›??c0]=(187±8±19)keV, respectively. These are the most precise measurements to date.

Published
2016

42. Observation of pseudoscalar and tensor resonances in J /ψ →γφφ

Author

H. H. Liu, H. R. Qi, Y. P. Guo, Serkant Ali Cetin, J. C. Li, J. B. Jiao, Xiang-Zhou Cai, H. Liang, J. Zhuang, Q. P. Ji, M. X. Luo, Jian Wei, D. V. Dedovich, S. Qian, Q. An, Jialun Ping, K. Zhang, X. Y. Zhang, J. B. Liu, I. Uman, X. L. Ji, Y. J. Sun, E. Boger, C. Hu, Y. P. Lu, H. B. Li, B. Kloss, A. G. Denig, C. L. Luo, G. A. Chelkov, X. Tang, C. C. Zhang, H. J. Lu, J. G. Lu, B. Zhong, L. B. Guo, J. Min, Lei Li, F. E. Maas, T. Hu, E. H. Thorndike, R. Baldini Ferroli, Z. Y. Zhang, T. Ma, X. L. Li, Yanping Huang, W. L. Yuan, X. H. Liu, L. Q. Qin, H. B. Liu, Q. Ouyang, S. S. Fang, P. X. Shen, Z. Wu, Krisztian Peters, M. Ullrich, Z. J. Xiao, L. W. Jiang, M. Z. Wang, Zhiqing Zhang, Y. G. Xie, B. Kopf, Y. B. Liu, C. Leng, X. N. Li, A. Calcaterra, Z. G. Zhao, K. L. He, Z. L. Dou, D. W. Bennett, Zujian Wang, H. H. Zhang, Haiping Peng, S. W. Han, Z. J. Sun, H. Loehner, Z. A. Liu, Z. Gao, M. Maggiora, Ling Zhao, Jiaxi Liu, S. L. Niu, L. G. Xia, X. H. Mo, L. S. Wang, M. H. Ye, X. Q. Li, Lei Zhao, V. Prasad, Y. Ban, P. Weidenkaff, J. Q. Zhang, K. J. Zhu, Z. L. Hou, S. P. Wen, Jimin Zhao, Y. B. Chen, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, X. S. Qin, X. R. Zhou, L. L. Wang, H. Cai, Cheng Li, K. Y. Liu, N. Yu. Muchnoi, X. S. Kang, Z. B. Li, Y. H. Zhang, G. Li, Y. F. Wang, S. L. Olsen, C. Z. Yuan, C. F. Redmer, Xichao Ruan, Andrzej Kupsc, C. D. Fu, Z. Y. Wang, C. Q. Feng, X. R. Chen, M. H. Gu, Z. Y. Deng, M. Ripka, Y. X. Xia, Y. H. Guan, T. Hussain, X. Y. Ma, W. X. Gong, L. Y. Dong, J. M. Bian, H. Y. Sheng, S. J. Zhao, X. K. Zhou, C. X. Yu, Yaquan Fang, M. Greco, P. L. Wang, C. H. Li, Shou-hua Zhu, S. B. Liu, B. Zheng, Q. J. Xu, R. G. Ping, Y. Nefedov, W. J. Zheng, X. L. Luo, G. X. Sun, J. V. Bennett, Li Yan, M. Y. Dong, J. C. Chen, Xuanhong Lou, Cen Zhang, Z. Jiao, D. H. Zhang, X. K. Chu, Nasser Kalantar-Nayestanaki, Ke Wang, I. B. Nikolaev, C. Morales Morales, K. Schoenning, Q. Y. Li, B. S. Zou, M. Qi, Yue Pan, J. H. Yin, H. J. Yang, J. Z. Bai, M. Shao, Y. T. Gu, W. P. Wang, F. Bianchi, R. Poling, P. F. Duan, Peilian Liu, Fenfen An, Lingxuan Zhang, B. L. Wang, W. C. Yan, Magnus Wolke, Y. F. Liang, T. C. Zhao, E. Fioravanti, D. P. Jin, O. Fedorov, Tao Luo, L. P. Zhou, J. H. Zou, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, D. Y. Liu, J. S. Lange, S. Schumann, B. X. Yu, X. P. Xu, X. B. Ji, M. Tiemens, Zhi Zeng, Y. M. Ma, Q. W. Zhao, N. Qin, Yunlong Zhang, Z. P. Mao, J. F. Chang, Yao Wang, P. Patteri, D. Bettoni, F. Y. Li, H. S. Chen, Alperen Yuncu, P. Kiese, Jin Li, Igor Boyko, J. L. Zhang, H. P. Cheng, J. Fang, Tao Li, R. A. Briere, Jianping Zheng, R. Kliemt, S. Zhu, S. S. Sun, Z. G. Wang, Shan Wang, H. Y. Zhang, X. S. Jiang, Ch. Rosner, Jie Yu, Xiao-Rui Lyu, S. X. Du, Y. J. Mo, X. Q. Hao, G. F. Chen, J. Y. Zhang, J. J. Zhang, Y. B. Zhao, W. Shan, M. Destefanis, G. S. Varner, O. Cakir, P. Larin, J. Dong, G. Cibinetto, M. Bertani, Z. Haddadi, L. Yang, S. Nisar, C. J. Tang, Y. Hu, Y. K. Heng, Manuel Lara, D. Xiao, Liqing Xu, Jie Zhao, D. X. Lin, X. N. Ma, Alexey Zhemchugov, H. M. Hu, X. Y. Shen, W. Gradl, V. Santoro, A. Zallo, F. H. Liu, J. W. Zhang, Y. Ding, D. Y. Wang, B. Wang, B. J. Liu, A. A. Zafar, M. G. Zhao, M. Fritsch, G. Felici, M. Kavatsyuk, Y. N. Zhang, W. Kühn, Q. Liu, Tristan Weber, Z. A. Zhu, Y. X. Yang, X. T. Chen, L. L. Ma, L. Gong, B. X. Zhang, K. H. Rashid, A. Amoroso, C. P. Shen, Q. L. Xiu, X. Fang, R. E. Mitchell, A. Dbeyssi, F. Feldbauer, Feng Liu, M. Ablikim, X. Y. Jiang, M. Kornicer, Y. T. Liang, A. Julin, S. J. Chen, F. De Mori, X. L. Gao, X. Y. Zhou, C. Dong, S. Sosio, K. J. Li, X. F. Wang, Q. M. Ma, Joachim Pettersson, Y. N. Guo, A. Hafner, Q. Zhao, Y. Z. Sun, X. Y. Niu, Y. Yuan, Y. S. Zhu, Yu Zhang, Z. H. Wang, G. S. Huang, Xiaocong Ai, K. Goetzen, Dan Wang, Y. Q. Wang, M. L. Chen, X. T. Huang, H. L. Dai, G. Rong, G. R. Liao, J. F. Sun, Gang Zhao, S. Marcello, Y. Zeng, Zhe Sun, L. H. Wu, M. Savrie, Xiaofeng Zhu, J. Z. Zhang, X. Y. Gao, R. Farinelli, L. D. Liu, F. A. Harris, H. L. Ma, D. M. Li, H. Muramatsu, M. Pelizaeus, J. Y. Liu, Q. Gao, Y. N. Gao, Y. Zhang, J. Z. Fan, J. S. Huang, Z. P. Zhang, C. X. Liu, G. F. Xu, S. Jin, X. Y. Song, F. Li, F. C. Ma, L. Zotti, J. F. Qiu, L. Fava, F. Nerling, Z. Ning, Y. J. Mao, H. X. Yang, I. Garzia, J. P. Liu, I. Tapan, Y. H. Yan, J. W. Zhao, J. G. Messchendorp, J. P. Dai, Zhiqing Liu, T. Johansson, Qiunan Xu, Y. C. Zhu, O. B. Kolcu, H. Xiao, T. Held, W. G. Li, S. Spataro, H. M. Liu, J. F. Hu, G. F. Cao, A. Q. Guo, W. M. Song, Z. H. Qin, D. J. Ambrose, M. Albrecht, W. D. Li, Bibo Ke, W. B. Yan, M. N. Achasov, S. Pacetti, Fang Liu, U. Wiedner, I. Denysenko, and B. Y. Zhang

Subjects
Physics, Pseudoscalar, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Partial wave analysis, 0103 physical sciences, Analytical chemistry, Resonance, 010306 general physics, 01 natural sciences, NO
Abstract

Based on a sample of (1310.6 +/- 10.5) x 10(6) J/psi events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay J/psi -> gamma phi phi is performed in order to study the intermediate states. Results of the partial wave analysis show that the structures are predominantly 0(-+) states. The existence of the eta(2225) is confirmed, and its resonance parameters are measured. Two additional pseudoscalar states, the eta(2100) with a mass of 2050(-24-26)(+30+75) MeV/c(2) and a width of 250(-30-164)(+36+181) MeV/c(2) and the X(2500) with a mass of 2470(-19-23)(+15+101) MeV/c(2) and a width of 230(-35-33)(+64+56) MeV/c(2), are observed. In addition to these three pseudoscalar states, the scalar state f(0)(2100), and three tensor states, the f(2)(2010), f(2)(2300) and f(2)(2340), are observed in the process J/psi -> gamma phi phi The product branching fractions B(J/psi -> gamma X) x B(X -> phi phi) are reported.

Published
2016

43. Study of decay dynamics andCPasymmetry inD+→KL0e+νedecay

Author

H. B. Li, X. K. Chu, F. Y. Li, X. Q. Li, Ling Zhao, A. G. Denig, C. L. Luo, H. J. Lu, J. G. Lu, Q. Ouyang, Lei Zhao, Z. L. Hou, Yang Yang, Peilian Liu, C. C. Zhang, B. Zhong, L. B. Guo, Lingxuan Zhang, Y. Ding, S. S. Fang, F. E. Maas, T. Hu, Y. B. Liu, P. L. Wang, Z. T. Sun, Z. A. Liu, X. L. Luo, V. Prasad, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, I. Uman, C. Hu, X. Tang, R. Kliemt, Y. Ban, P. Weidenkaff, C. Leng, A. Zallo, L. G. Xia, Ulrich Wiedner, K. J. Zhu, K. Moriya, B. J. Liu, W. P. Wang, N. Yu. Muchnoi, X. S. Kang, S. P. Wen, Jie Yu, F. Bianchi, J. Min, X. S. Qin, X. R. Zhou, Guangming Huang, Y. H. Zhang, P. X. Shen, Z. Wu, Cheng Li, S. Schumann, K. Y. Liu, Z. B. Li, C. Z. Yuan, J. F. Sun, P. Larin, Z. A. Zhu, X. H. Mo, L. S. Wang, M. H. Ye, J. B. Jiao, L. W. Jiang, H. L. Ma, D. M. Li, T. Ma, B. Kopf, F. Li, D. Y. Liu, Z. Y. Wang, Yao Wang, X. Y. Jiang, Y. H. Guan, Kai Liu, Zhiqing Zhang, C. P. Shen, L. J. Wu, L. L. Wang, H. Cai, F. C. Ma, K. L. He, H. Muramatsu, M. Pelizaeus, M. H. Gu, M. M. Ma, P. R. Li, X. N. Ma, Y. J. Mo, S. B. Liu, G. Li, Y. F. Wang, H. Y. Sheng, M. Z. Wang, D. Bettoni, E. H. Thorndike, L. D. Liu, Y. X. Yang, Y. Zeng, Y. T. Liang, C. D. Fu, C. X. Yu, H. H. Liu, Y. Nefedov, J. C. Li, H. S. Chen, T. Weber, L. Y. Dong, Jimin Zhao, C. Q. Feng, X. R. Chen, L. Q. Qin, J. F. Qiu, B. Zheng, R. G. Ping, M. Fritsch, F. Feldbauer, Z. Y. Deng, M. Maggiora, A. Hafner, M. Kavatsyuk, Q. P. Ji, Q. Zhao, Y. Z. Sun, L. Fava, Y. X. Xia, S. H. Zhu, Liqing Xu, X. Y. Shen, S. Han, W. J. Zheng, X. Y. Ma, X. K. Zhou, Xingguo Li, X. C. Chen, M. Qi, S. Qian, Jialun Ping, G. X. Sun, J. V. Bennett, Li Yan, Xiang Zhou, K. Zhang, X. Y. Zhang, J. Zhuang, Z. Ning, M. X. Luo, Jian Wei, J. Z. Bai, Yucheng Huang, Gang Zhao, F. Nerling, B. X. Zhang, Cui Li, Z. Jiao, Fu-Hu Liu, W. X. Gong, D. V. Dedovich, Y. B. Chen, H. J. Yang, Xiaofeng Zhu, J. Z. Zhang, L. H. Wu, D. H. Zhang, M. Lara, J. B. Liu, Y. J. Mao, H. J. Li, J. Y. Liu, M. Savrie, Y. J. Sun, E. Boger, Y. P. Lu, Y. B. Zhao, G. Cibinetto, Q. L. Xiu, J. Q. Zhang, S. Marcello, J. H. Yin, G. Felici, K. H. Rashid, S. Chen Chen, W. F. Wang, H. H. Zhang, W. Shan, X. B. Ji, M. Tiemens, Q. Gao, Y. N. Gao, Y. Zhang, P. Patteri, Q. An, X. Fang, J. Dong, Jie Zhao, D. X. Lin, Feng Liu, M. Shao, Y. T. Gu, X. Y. Gao, H. M. Hu, E. Fioravanti, X. H. Sun, J. Z. Fan, A. Zhemchugov, X. Liu, M. Ablikim, Y. Q. Wang, X. L. Kang, A. Sarantsev, D. H. Wei, J. S. Lange, J. W. Zhang, Q. W. Zhao, S. Nisar, C. J. Tang, Y. Hu, Z. J. Xiao, Serkant Ali Cetin, M. Bertani, Z. Haddadi, Z. G. Zhao, P. Kiese, L. Yang, Chi Zhang, Z. J. Sun, H. Loehner, B. Wang, D. Xiao, S. L. Olsen, R. A. Briere, Jun-Yi Zhang, Y. P. Guo, W. Gradl, G. S. Huang, M. Ripka, S. Sosio, Krisztian Peters, Z. P. Zhang, X. S. Jiang, G. R. Liao, D. W. Bennett, Zujian Wang, O. Cakir, Zhiqing Liu, Jin Li, T. Johansson, J. F. Chang, Z. H. Wang, X. Cai, X. Q. Hao, F. A. Harris, C. F. Redmer, Xiaocong Ai, M. G. Zhao, R. P. Guo, X. T. Huang, A. A. Zafar, G. Rong, Y. N. Zhang, M. Ullrich, Z. G. Wang, H. Y. Zhang, M. Y. Dong, G. F. Chen, H. B. Liu, S. J. Chen, J. Y. Zhang, J. H. Zou, S. S. Sun, Magnus Wolke, J. J. Xu, Y. F. Liang, D. P. Jin, L. Zotti, Y. K. Heng, Dayong Wang, N. Qin, J. M. Bian, Zhenyu Zhang, S. J. Zhao, M. Destefanis, J. S. Huang, C. X. Liu, J. C. Chen, Xuanhong Lou, Nasser Kalantar-Nayestanaki, Andrzej Kupsc, C. Morales Morales, Yue Pan, W. L. Yuan, M. L. Chen, R. E. Mitchell, J. J. Liang, G. F. Xu, S. Jin, Y. Guo, Bibo Ke, W. B. Yan, X. Y. Song, M. N. Achasov, K. Goetzen, W. Kuehn, S. Pacetti, Ke Li, Fang Liu, I. Denysenko, B. Y. Zhang, Xiangdong Ruan, Q. Liu, L. L. Ma, A. Amoroso, A. Dbeyssi, M. Kornicer, A. Julin, F. De Mori, X. Y. Zhou, X. F. Wang, Q. M. Ma, B. Kloss, X. Y. Niu, Y. Yuan, Y. S. Zhu, Q. J. Xu, D. J. Ambrose, W. C. Yan, X. N. Li, Haiping Peng, I. Garzia, Yu Zhang, Tao Luo, L. P. Zhou, B. X. Yu, Zhi Zeng, Z. P. Mao, A. Calcaterra, H. P. Cheng, J. Fang, Tao Li, M. Albrecht, W. D. Li, Ch. Rosner, H. Liang, H. L. Dai, Igor Boyko, H. X. Yang, I. B. Nikolaev, Ding-Xiong Wang, J. P. Liu, O. B. Kolcu, J. G. Messchendorp, J. P. Dai, M. Shi, I. Tapan, Y. H. Yan, J. W. Zhao, J. H. Liu, W. G. Li, X. M. Li, S. Spataro, X. P. Xu, Y. C. Zhu, Ke Wang, Lei Li, H. M. Liu, Yaquan Fang, H. Xiao, J. F. Hu, R. Baldini Ferroli, T. Held, K. Schoenning, B. S. Zou, G. F. Cao, R. Poling, P. F. Duan, Fenfen An, T. C. Zhao, A. Q. Guo, W. M. Song, Z. H. Qin, Shan Wang, Xiao-Rui Lyu, G. S. Varner, X. L. Ji, G. A. Chelkov, Talib Hussain, A. Yuncu, Y. G. Xie, S. X. Du, X. L. Gao, C. Dong, M. Greco, Joachim Pettersson, Yunlong Zhang, J. L. Zhang, Jianping Zheng, S. Zhu, J. J. Zhang, Z. Gao, and S. L. Niu

Subjects
Physics, Nuclear and High Energy Physics, Annihilation, Meson, 010308 nuclear & particles physics, Branching fraction, Cabibbo–Kobayashi–Maskawa matrix, Electron–positron annihilation, Hadron, Form factor (quantum field theory), Analytical chemistry, 01 natural sciences, Nuclear physics, 0103 physical sciences, CP violation, 010306 general physics
Abstract

Using 2.92 fb(-1) of electron-positron annihilation data collected at root s = 3.773 GeV with the BESIII detector, we obtain the first measurements of the absolute branching fraction B(D+ -> K(L)(0)e(+)nu(e)) = (4.481 +/- 0.027(stat) +/- 0.103(sys))% and the CP asymmetry A(CP)(D+-> KL0e+nu e) = (-0.59 +/- 0.60(stat) +/- 1.48(sys))%. From the D+ -> K(L)(0)e(+)nu(e) differential decay rate distribution, the product of the hadronic form factor and the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element, f(+)(K)(0)vertical bar V-cs vertical bar, is determined to be 0.728 +/- 0.006(stat) +/- 0.011(sys). Using vertical bar V-cs vertical bar from the SM constrained fit with the measured f(+)(K)(0)vertical bar V-cs vertical bar, f(+)(K)(0) = 0.748 +/- 0.007(stat) +/- 0.012(sys) is obtained, and utilizing the unquenched Lattice QCD (LQCD) calculation for f(+)(K)(0), vertical bar V-cs vertical bar = 0.975 +/- 0.008(stat) +/- 0.015(sys) +/- 0.025(LQCD).

Published
2015

44. Measurement of the Absolute Branching Fraction forΛc+→Λe+νe

Author

X. K. Chu, Yu Zhang, A. Q. Guo, Y. J. Mo, L. P. Zhou, Z. Gao, X. Fang, Z. P. Mao, W. M. Song, E. H. Thorndike, H. P. Cheng, Feng Liu, Shan Wang, J. Fang, Tao Li, Xiao-Rui Lyu, F. Li, Chi Zhang, H. S. Chen, D. J. Ambrose, M. H. Ye, W. P. Wang, M. Ablikim, L. Q. Qin, F. Feldbauer, Peilian Liu, Lingxuan Zhang, F. C. Ma, I. Uman, Ch. Rosner, C. Dong, S. Sosio, Z. H. Qin, C. Leng, T. Weber, Q. P. Ji, X. R. Chen, J. M. Bian, Zhenyu Zhang, L. D. Liu, L. Y. Dong, G. S. Varner, H. Liang, Tao Luo, J. Z. Bai, Joachim Pettersson, X. C. Chen, Bibo Ke, Y. H. Guan, Liqing Xu, Kai Liu, X. Y. Shen, V. Santoro, M. Albrecht, W. G. Li, H. L. Ma, D. M. Li, W. B. Yan, M. N. Achasov, W. J. Zheng, W. D. Li, B. X. Yu, J. C. Chen, Xuanhong Lou, X. M. Li, Y. Ding, Nasser Kalantar-Nayestanaki, S. Spataro, A. Calcaterra, Z. G. Zhao, X. P. Xu, M. H. Gu, D. Bettoni, J. F. Qiu, Zhi Zeng, L. Fava, M. Pelizaeus, Giulietto Felici, S. Schumann, S. Pacetti, H. Y. Sheng, Yao Wang, C. Morales Morales, X. Liu, J. Q. Zhang, Y. Nefedov, X. B. Ji, Y. J. Mao, J. L. Zhang, R. Poling, Zhiqing Liu, Cui Li, H. R. Qi, B. J. Liu, Lei Li, H. M. Liu, I. Tapan, J. Y. Liu, Jianping Zheng, S. Zhu, Jin Li, Z. J. Sun, P. Patteri, C. X. Yu, Z. J. Xiao, H. H. Liu, M. Y. Dong, M. Tiemens, J. C. Li, H. J. Lu, J. G. Lu, Y. H. Yan, J. W. Zhao, Y. C. Zhu, J. F. Chang, O. B. Kolcu, I. B. Nikolaev, Z. A. Zhu, G. F. Cao, J. Zhuang, H. X. Yang, I. Garzia, J. H. Yin, M. G. Zhao, Q. L. Xiu, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, X. L. Ji, Shujun Zhao, H. L. Dai, Igor Boyko, Y. X. Xia, S. H. Zhu, X. N. Ma, Y. T. Liang, A. Zallo, B. Zheng, R. G. Ping, Z. T. Sun, Z. A. Liu, F. Nerling, Y. N. Zhang, V. Prasad, M. X. Luo, J. J. Zhang, M. Fritsch, F. E. Maas, G. Li, M. Destefanis, J. Z. Fan, X. Cai, Serkant Ali Cetin, W. L. Yuan, J. H. Zou, L. Zotti, Yaquan Fang, S. S. Sun, Jian Wei, Yucheng Huang, D. V. Dedovich, H. Xiao, Andrzej Kupsc, J. P. Liu, M. Kavatsyuk, T. Hu, Z. G. Wang, C. Hu, H. Y. Zhang, Y. Ban, E. Boger, P. Weidenkaff, R. Baldini Ferroli, M. Shao, Y. T. Gu, K. Schoenning, B. S. Zou, T. Held, C. P. Shen, X. Q. Hao, C. D. Fu, C. Q. Feng, Y. X. Yang, J. G. Messchendorp, H. B. Li, J. P. Dai, X. Tang, M. L. Chen, Z. Y. Deng, L. Xia, Guangming Huang, G. F. Chen, Q. J. Xu, A. Yuncu, D. Y. Liu, R. E. Mitchell, J. B. Jiao, B. X. Zhang, Q. Ouyang, A. G. Denig, C. L. Luo, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, C. C. Zhang, K. Li, S. P. Wen, J. Y. Zhang, Z. Ning, X. K. Zhou, Y. B. Liu, Fang Liu, X. S. Qin, X. R. Zhou, B. Zhong, L. B. Guo, Qiunan Xu, E. Fioravanti, P. X. Shen, Z. Wu, L. W. Jiang, S. S. Fang, H. B. Liu, G. F. Xu, I. Denysenko, H. Muramatsu, X. L. Kang, A. Sarantsev, Ulrich Wiedner, Xingguo Li, Cheng Li, A. Hafner, M. Kornicer, X. N. Li, Q. Zhao, Y. Z. Sun, Zhiqing Zhang, Haiping Peng, Yiming Zhang, N. Yu. Muchnoi, J. H. Liu, X. S. Kang, B. Wang, D. H. Wei, Y. H. Zhang, B. Y. Zhang, J. S. Lange, T. Ma, Q. W. Zhao, R. Kliemt, Y. K. Heng, Xiang Zhou, P. L. Wang, Y. G. Xie, Ke Wang, K. J. Zhu, Jie Yu, P. Larin, X. L. Luo, S. Jin, H. Y. Chen, Gang Zhao, X. H. Mo, L. S. Wang, S. X. Du, Z. L. Dou, Magnus Wolke, P. F. Duan, Fenfen An, F. A. Harris, L. L. Wang, Y. F. Liang, F. Bianchi, H. Cai, B. L. Wang, G. Cibinetto, D. P. Jin, X. Y. Jiang, Z. Y. Wang, T. C. Zhao, Guangshun Huang, P. R. Li, L. Yan, O. Fedorov, Jie Zhao, D. X. Lin, Dayong Wang, N. Qin, Zahra Haddadi, Alexey Zhemchugov, H. M. Hu, Xian Gao, Y. Pan, J. W. Zhang, G. X. Sun, J. V. Bennett, M. Ullrich, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. P. Guo, H. H. Zhang, Z. P. Zhang, G. A. Chelkov, D. W. Bennett, Zujian Wang, S. Qian, Jialun Ping, K. Zhang, X. Y. Zhang, M. Lara, J. B. Liu, Y. Guo, M. Maggiora, Ling Zhao, Y. J. Sun, Y. B. Zhao, Lei Zhao, W. Shan, Y. P. Lu, Z. L. Hou, Yang Yang, J. Dong, D. Y. Wang, Y. Q. Wang, S. Nisar, C. J. Tang, Y. Hu, X. Y. Song, C. Z. Yuan, D. Xiao, K. Goetzen, W. Kuehn, J. F. Sun, S. Marcello, Y. Zeng, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Krisztian Peters, Y. F. Wang, G. R. Liao, J. F. Hu, T. Hussain, X. Y. Ma, W. X. Gong, J. Min, J. S. Huang, C. X. Liu, B. Kopf, K. L. He, M. Z. Wang, Orhan Cakir, P. Kiese, Jimin Zhao, S. L. Olsen, R. A. Briere, X. S. Jiang, M. Bertani, L. Yang, S. L. Niu, F. Y. Li, X. Q. Li, M. Greco, K. Y. Liu, W. Gradl, M. Ripka, Z. B. Li, Tord Johansson, M. Qi, H. J. Yang, S. B. Liu, F. De Mori, X. Y. Zhou, X. F. Wang, Q. M. Ma, B. Kloss, X. Y. Niu, Y. Yuan, Y. S. Zhu, Xiangdong Ruan, Q. Liu, L. L. Ma, L. G. Xia, A. Amoroso, A. Dbeyssi, A. Julin, S. Han, L. H. Wu, M. Savrie, X. Y. Gao, Z. H. Wang, C. F. Redmer, Xiaocong Ai, X. T. Huang, G. Rong, A. A. Zafar, K. H. Rashid, S. J. Chen, and W. C. Yan

Subjects
Physics, Annihilation, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Theoretical models, Analytical chemistry, General Physics and Astronomy, Lambda baryon, Lambda, 01 natural sciences, Nuclear physics, Baryon, Charmed baryons, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

We report the first measurement of the absolute branching fraction for Lambda(+)(c) -> Lambda e(+)nu(e). This measurement is based on 567 pb(-1) of e(+)e(-) annihilation data produced at root s = 4.599 GeV, which is just above the Lambda(+)(c)Lambda(-)(c) threshold. The data were collected with the BESIII detector at the BEPCII storage rings. The branching fraction is determined to be B(Lambda(+)(c) -> Lambda e(+)nu(e)) = [3.63 +/- 0.38(stat) +/- 0.20(syst)] %, representing a significant improvement in precision over the current indirect determination. As the branching fraction for Lambda(+)(c) -> Lambda e(+)nu(e) is the benchmark for those of other Lambda(+)(c) semileptonic channels, our result provides a unique test of different theoretical models, which is the most stringent to date.

Published
2015

45. Observation of a Neutral Structure near theDD¯*Mass Threshold ine+e−→(DD¯*)0π0ats=4.226and 4.257 GeV

Author

Z. T. Sun, Z. A. Liu, E. H. Thorndike, Y. X. Xia, S. H. Zhu, L. Q. Qin, V. Prasad, W. G. Li, F. Feldbauer, Shan Wang, Xiao-Rui Lyu, Y. Ban, P. Weidenkaff, F. Li, C. Dong, S. Sosio, X. M. Li, Yunlong Zhang, D. Bettoni, F. C. Ma, J. L. Zhang, R. Poling, Jianping Zheng, S. Zhu, J. J. Zhang, M. Destefanis, M. Bertani, P. L. Wang, S. Spataro, L. Yang, X. P. Xu, Joachim Pettersson, D. Y. Liu, J. B. Jiao, X. C. Chen, C. Leng, S. P. Wen, Jin Li, G. S. Varner, L. Zotti, X. L. Luo, C. Hu, X. S. Qin, X. R. Zhou, X. Tang, Lei Li, H. M. Liu, S. Chen Chen, J. F. Qiu, A. Yuncu, J. Z. Bai, Cheng Li, L. Fava, X. H. Mo, K. J. Zhu, L. S. Wang, M. H. Ye, W. Gradl, F. De Mori, M. Ripka, Tao Luo, K. Moriya, F. Nerling, H. Liang, Jie Zhao, D. X. Lin, G. F. Cao, M. Qi, H. J. Yang, L. L. Wang, H. Cai, I. Tapan, Alexey Zhemchugov, H. M. Hu, Q. P. Ji, Y. Ding, Y. H. Guan, X. B. Ji, Z. Ning, W. P. Wang, B. J. Liu, B. X. Yu, Zhi Zeng, F. Bianchi, X. Y. Zhou, Bibo Ke, I. B. Nikolaev, Y. H. Yan, J. W. Zhao, M. G. Zhao, P. Patteri, J. H. Yin, X. L. Ji, X. K. Chu, R. P. Guo, Y. N. Zhang, M. Shao, Y. T. Gu, Y. C. Zhu, Kai Liu, H. X. Yang, J. W. Zhang, I. Garzia, E. Fioravanti, H. S. Chen, W. B. Yan, W. Kühn, G. Li, H. Xiao, E. Boger, H. L. Dai, Igor Boyko, J. M. Bian, Z. A. Zhu, Zhenyu Zhang, S. J. Zhao, S. B. Liu, M. N. Achasov, X. L. Kang, A. Sarantsev, D. H. Wei, Y. H. Zheng, J. S. Lange, C. D. Fu, T. Held, J. Q. Zhang, Q. W. Zhao, J. H. Liu, Cong-Feng Qiao, O. Albayrak, C. Q. Feng, W. C. Yan, X. F. Wang, J. J. Xu, X. R. Chen, S. Qian, Jialun Ping, J. P. Liu, J. Min, Z. Y. Deng, Ke Wang, D. J. Ambrose, X. Q. He, Giulietto Felici, L. D. Liu, N. Yu. Muchnoi, Q. M. Ma, L. Y. Dong, X. S. Kang, S. Pacetti, W. J. Zheng, Y. H. Zhang, C. P. Shen, P. F. Duan, Yu Zhang, K. Zhang, J. S. Huang, J. G. Messchendorp, J. P. Dai, C. X. Liu, F. A. Harris, H. J. Lu, X. Y. Zhang, Xingguo Li, M. Lara, J. B. Liu, R. Kliemt, J. G. Lu, B. Kopf, K. L. He, Peilian Liu, J. C. Chen, L. P. Zhou, M. Shi, Xuanhong Lou, Y. G. Xie, Lingxuan Zhang, B. Kloss, X. Y. Niu, L. J. Wu, Fenfen An, T. C. Zhao, Jie Yu, Y. Nefedov, Y. J. Sun, M. Z. Wang, Nasser Kalantar-Nayestanaki, F. E. Maas, M. Albrecht, W. D. Li, Jimin Zhao, Z. P. Mao, Y. Yuan, Y. J. Mo, Y. S. Zhu, C. Morales Morales, S. X. Du, Z. Y. Wang, H. P. Cheng, A. Q. Guo, T. Hu, Y. P. Lu, Z. G. Wang, Xiangdong Ruan, J. Fang, Tao Li, Z. Gao, Q. Liu, W. M. Song, H. J. Li, P. Larin, H. Y. Zhang, Ke Li, K. Goetzen, G. Cibinetto, Q. L. Xiu, M. Y. Dong, L. Xia, Ch. Rosner, M. H. Gu, G. F. Chen, L. L. Ma, T. Weber, Guangming Huang, P. X. Shen, Z. Wu, H. Y. Sheng, J. Y. Zhang, L. G. Xia, A. Amoroso, R. Baldini Ferroli, L. W. Jiang, Z. H. Qin, M. Tiemens, Yaquan Fang, A. Dbeyssi, Zhiqing Zhang, Cui Li, C. X. Yu, X. Liu, H. B. Liu, Y. K. Heng, Z. J. Xiao, J. J. Liang, A. Julin, Liqing Xu, X. Y. Shen, Q. J. Xu, Q. Ouyang, B. Zheng, R. G. Ping, S. S. Fang, G. F. Xu, J. H. Zou, S. Jin, Serkant Ali Cetin, Y. B. Liu, K. Schoenning, B. S. Zou, Y. Guo, X. Y. Song, S. S. Sun, X. N. Li, Haiping Peng, R. E. Mitchell, X. K. Zhou, Fang Liu, I. Denysenko, B. Y. Zhang, S. Han, L. H. Wu, M. Savrie, X. Y. Gao, Z. H. Wang, Chi Zhang, C. F. Redmer, Xiaocong Ai, X. T. Huang, G. Rong, J. F. Sun, S. Marcello, Y. Zeng, A. A. Zafar, Y. B. Chen, K. H. Rashid, Xiaofeng Zhu, J. Z. Zhang, Krisztian Peters, S. J. Chen, G. R. Liao, J. F. Hu, Guangshun Huang, L. Yan, H. H. Zhang, G. A. Chelkov, M. Maggiora, Ling Zhao, Lei Zhao, Z. L. Hou, Yang Yang, D. Y. Wang, C. Z. Yuan, X. Fang, Feng Liu, M. Ablikim, X. N. Ma, Y. T. Liang, A. Zallo, M. Fritsch, M. Kavatsyuk, Jun-Yi Zhang, Y. P. Guo, B. X. Zhang, H. B. Li, Z. P. Zhang, S. Schumann, Yao Wang, A. G. Denig, C. L. Luo, D. W. Bennett, Zujian Wang, C. C. Zhang, B. Zhong, L. B. Guo, Y. B. Zhao, W. Shan, J. Dong, H. Muramatsu, Y. Q. Wang, Ulrich Wiedner, S. Nisar, C. J. Tang, M. Kornicer, Y. Hu, T. Ma, B. Wang, D. Xiao, X. Y. Jiang, M. M. Ma, P. R. Li, Zahra Haddadi, Y. Pan, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, D. H. Zhang, A. Calcaterra, Z. G. Zhao, Z. J. Sun, H. Loehner, H. H. Liu, J. C. Li, J. Zhuang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, Orhan Cakir, P. Kiese, S. L. Olsen, R. A. Briere, X. S. Jiang, Y. F. Wang, T. Hussain, X. Y. Ma, W. X. Gong, X. H. Sun, S. L. Niu, F. Y. Li, X. Q. Li, M. Greco, K. Y. Liu, Z. B. Li, Y. J. Mao, J. Y. Liu, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, J. Z. Fan, I. Uman, H. L. Ma, D. M. Li, M. Pelizaeus, Y. X. Yang, A. Hafner, Q. Zhao, Y. Z. Sun, Xiang Zhou, Gang Zhao, Zhiqing Liu, T. Johansson, J. F. Chang, Magnus Wolke, Y. F. Liang, O. B. Kolcu, X. Cai, D. P. Jin, X. Q. Hao, Dayong Wang, N. Qin, Andrzej Kupsc, W. L. Yuan, M. L. Chen, Xian Gao, and M. Ullrich

Subjects
Physics, Electron–positron annihilation, Isospin, Analytical chemistry, Pi, General Physics and Astronomy, Resonance, Atomic physics, Atomic mass, Bar (unit)
Abstract

A neutral structure in the D (D) over bar* system around the D (D) over bar* mass threshold is observed with a statistical significance greater than 10 sigma in the processes e(+)e(-) -> D+D*(-)pi(0) + c.c. and e(+)e(-) -> D-0(D) over bar*(0)pi(0) + c.c. at root s = 4.226 and 4.257 GeV in the BESIII experiment. The structure is denoted as Z(c)(3885)(0). Assuming the presence of a resonance, its pole mass and width are determined to be [3885.7(-5.7)(+4.3) (stat) +/- 8.4(syst)] MeV/c(2) and [35(-12)(+11) (stat) +/- 15(syst)] MeV, respectively. The Born cross sections are measured to be sigma[e(+)e(-) -> Z(c)(3885)(0)pi(0); Z(c)(3885)(0) -> D (D) over bar*] = [77 +/- 13(stat) +/- 17(syst)] pb at 4.226 GeV and [47 +/- 9(stat) +/- 10(syst)] pb at 4.257 GeV. The ratio of decay rates B[Z(c)(3885)(0) -> D+D*(-) + c.c.]/B[Z(c)(3885)(0) -> D-0(D) over bar*(0) + c.c.] is determined to be 0.96 +/- 0.18(stat) +/- 0.12(syst), consistent with no isospin violation in the process, Z(c)(3885)(0) -> D (D) over bar*.

Published
2015

46. Study of $J/ψ\to p\bar{p}$ and $J/ψ\to n\bar{n}$

Author

BESIII Collaboration, M. Ablikim(Institute of High Energy Physics, Beijing, P. R. China), M. N. Achasov(G.I. Budker Institute of Nuclear Physics SB RAS), D. J. Ambrose(University of Rochester, Rochester, New York, USA), F. F. An(Institute of High Energy Physics, Beijing, P. R. China), Q. An(University of Science and Technology of China, Hefei, P. R. China), Z. H. An(Institute of High Energy Physics, Beijing, P. R. China), J. Z. Bai(Institute of High Energy Physics, Beijing, P. R. China), R. B. Ferroli(INFN Laboratori Nazionali di Frascati, Frascati, Italy), Y. Ban(Peking University, Beijing, P. R. China), J. Becker(Bochum Ruhr-University, Bochum, Germany), N. Berger(Institute of High Energy Physics, Beijing, P. R. China), M. B. Bertani(INFN Laboratori Nazionali di Frascati, Frascati, Italy), J. M. Bian(University of Minnesota, Minneapolis, MN, USA), E. Boger(20, a), O. Bondarenko(KVI/University of Groningen, Groningen, The Netherlands), I. Boyko(Joint Institute for Nuclear Research, Dubna, Russia), R. A. Briere(Carnegie Mellon University, Pittsburgh, PA, USA), V. Bytev(Joint Institute for Nuclear Research, Dubna, Russia), X. Cai(Institute of High Energy Physics, Beijing, P. R. China), A. C. Calcaterra(INFN Laboratori Nazionali di Frascati, Frascati, Italy), G. F. Cao(Institute of High Energy Physics, Beijing, P. R. China), J. F. Chang(Institute of High Energy Physics, Beijing, P. R. China), G. Chelkov(20, a), G. Chen(Institute of High Energy Physics, Beijing, P. R. China), H. S. Chen(Institute of High Energy Physics, Beijing, P. R. China), J. C. Chen(Institute of High Energy Physics, Beijing, P. R. China), M. L. Chen(Institute of High Energy Physics, Beijing, P. R. China), S. J. Chen(Nanjing University, Nanjing, P. R. China), Y. Chen(Institute of High Energy Physics, Beijing, P. R. China), Y. B. Chen(Institute of High Energy Physics, Beijing, P. R. China), H. P. Cheng(Huangshan College, Huangshan, P. R. China), Y. P. Chu(Institute of High Energy Physics, Beijing, P. R. China), D. Cronin-Hennessy(University of Minnesota, Minneapolis, MN, USA), H. L. Dai(Institute of High Energy Physics, Beijing, P. R. China), J. P. Dai(Institute of High Energy Physics, Beijing, P. R. China), D. Dedovich(Joint Institute for Nuclear Research, Dubna, Russia), Z. Y. Deng(Institute of High Energy Physics, Beijing, P. R. China), A. Denig(Johannes Gutenberg University of Mainz, Mainz, Germany), I. Denysenko(20, b), M. Destefanis(University of Turin and INFN, Turin, Italy), W. M. Ding(Shandong University, Jinan, P. R. China), Y. Ding(Liaoning University, Shenyang, P. R. China), L. Y. Dong(Institute of High Energy Physics, Beijing, P. R. China), M. Y. Dong(Institute of High Energy Physics, Beijing, P. R. China), S. X. Du(Zhengzhou University, Zhengzhou, P. R. China), J. Fang(Institute of High Energy Physics, Beijing, P. R. China), S. S. Fang(Institute of High Energy Physics, Beijing, P. R. China), L. Fava(44, c), F. Feldbauer(Bochum Ruhr-University, Bochum, Germany), C. Q. Feng(University of Science and Technology of China, Hefei, P. R. China), C. D. Fu(Institute of High Energy Physics, Beijing, P. R. China), J. L. Fu(Nanjing University, Nanjing, P. R. China), Y. Gao(Tsinghua University, Beijing, P. R. China), C. Geng(University of Science and Technology of China, Hefei, P. R. China), K. Goetzen(GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt, Germany), W. X. Gong(Institute of High Energy Physics, Beijing, P. R. China), W. Gradl(Johannes Gutenberg University of Mainz, Mainz, Germany), M. Greco(University of Turin and INFN, Turin, Italy), M. H. Gu(Institute of High Energy Physics, Beijing, P. R. China), Y. T. Gu(GuangXi University, Nanning, P.R.China), Y. H. Guan(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), A. Q. Guo(Nankai University, Tianjin, P. R. China), L. B. Guo(Nanjing Normal University, Nanjing, P. R. China), Y. P. Guo(Nankai University, Tianjin, P. R. China), Y. L. Han(Institute of High Energy Physics, Beijing, P. R. China), X. Q. Hao(Institute of High Energy Physics, Beijing, P. R. China), F. A. Harris(University of Hawaii, Honolulu, Hawaii, USA), K. L. He(Institute of High Energy Physics, Beijing, P. R. China), M. He(Institute of High Energy Physics, Beijing, P. R. China), Z. Y. He(Nankai University, Tianjin, P. R. China), T. Held(Bochum Ruhr-University, Bochum, Germany), Y. K. Heng(Institute of High Energy Physics, Beijing, P. R. China), Z. L. Hou(Institute of High Energy Physics, Beijing, P. R. China), H. M. Hu(Institute of High Energy Physics, Beijing, P. R. China), J. F. Hu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), T. Hu(Institute of High Energy Physics, Beijing, P. R. China), B. Huang(Institute of High Energy Physics, Beijing, P. R. China), G. M. Huang(Huazhong Normal University, Wuhan, P. R. China), J. S. Huang(Henan Normal University, Xinxiang, P. R. China), X. T. Huang(Shandong University, Jinan, P. R. China), Y. P. Huang(Institute of High Energy Physics, Beijing, P. R. China), T. Hussain(University of the Punjab, Lahore, Pakistan), C. S. Ji(University of Science and Technology of China, Hefei, P. R. China), Q. Ji(Institute of High Energy Physics, Beijing, P. R. China), X. B. Ji(Institute of High Energy Physics, Beijing, P. R. China), X. L. Ji(Institute of High Energy Physics, Beijing, P. R. China), L. K. Jia(Institute of High Energy Physics, Beijing, P. R. China), L. L. Jiang(Institute of High Energy Physics, Beijing, P. R. China), X. S. Jiang(Institute of High Energy Physics, Beijing, P. R. China), J. B. Jiao(Shandong University, Jinan, P. R. China), Z. Jiao(Huangshan College, Huangshan, P. R. China), D. P. Jin(Institute of High Energy Physics, Beijing, P. R. China), S. Jin(Institute of High Energy Physics, Beijing, P. R. China), F. F. Jing(Tsinghua University, Beijing, P. R. China), N. Kalantar-Nayestanaki(KVI/University of Groningen, Groningen, The Netherlands), M. Kavatsyuk(KVI/University of Groningen, Groningen, The Netherlands), W. Kuehn(Universitaet Giessen, Giessen, Germany), W. Lai(Institute of High Energy Physics, Beijing, P. R. China), J. S. Lange(Universitaet Giessen, Giessen, Germany), J. K. C. Leung(The University of Hong Kong, Pokfulam, Hong Kong), C. H. Li(Institute of High Energy Physics, Beijing, P. R. China), Cheng Li(University of Science and Technology of China, Hefei, P. R. China), Cui Li(University of Science and Technology of China, Hefei, P. R. China), D. M. Li(Zhengzhou University, Zhengzhou, P. R. China), F. Li(Institute of High Energy Physics, Beijing, P. R. China), G. Li(Institute of High Energy Physics, Beijing, P. R. China), H. B. Li(Institute of High Energy Physics, Beijing, P. R. China), J. C. Li(Institute of High Energy Physics, Beijing, P. R. China), K. Li(Hangzhou Normal University, Hangzhou, P. R. China), Lei Li(Institute of High Energy Physics, Beijing, P. R. China), N. B. Li(Nanjing Normal University, Nanjing, P. R. China), Q. J. Li(Institute of High Energy Physics, Beijing, P. R. China), S. L. Li(Institute of High Energy Physics, Beijing, P. R. China), W. D. Li(Institute of High Energy Physics, Beijing, P. R. China), W. G. Li(Institute of High Energy Physics, Beijing, P. R. China), X. L. Li(Shandong University, Jinan, P. R. China), X. N. Li(Institute of High Energy Physics, Beijing, P. R. China), X. Q. Li(Nankai University, Tianjin, P. R. China), X. R. Li(Seoul National University, Seoul, Korea), Z. B. Li(Sun Yat-Sen University, Guangzhou, P. R. China), H. Liang(University of Science and Technology of China, Hefei, P. R. China), Y. F. Liang(Sichuan University, Chengdu, P. R. China), Y. T. Liang(Universitaet Giessen, Giessen, Germany), G. R. Liao(Tsinghua University, Beijing, P. R. China), X. T. Liao(Institute of High Energy Physics, Beijing, P. R. China), B. J. Liu(Institute of High Energy Physics, Beijing, P. R. China), C. L. Liu(Carnegie Mellon University, Pittsburgh, PA, USA), C. X. Liu(Institute of High Energy Physics, Beijing, P. R. China), C. Y. Liu(Institute of High Energy Physics, Beijing, P. R. China), F. H. Liu(Shanxi University, Taiyuan, P. R. China), Fang Liu(Institute of High Energy Physics, Beijing, P. R. China), Feng Liu(Huazhong Normal University, Wuhan, P. R. China), H. Liu(Shanxi University, Taiyuan, P. R. China), H. B. Liu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), H. H. Liu(Henan University of Science and Technology, Luoyang, P. R. China), H. M. Liu(Institute of High Energy Physics, Beijing, P. R. China), H. W. Liu(Institute of High Energy Physics, Beijing, P. R. China), J. P. Liu(Wuhan University, Wuhan, P. R. China), Kun Liu(Peking University, Beijing, P. R. China), Kai Liu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), K. Y. Liu(Liaoning University, Shenyang, P. R. China), P. L. Liu(Shandong University, Jinan, P. R. China), S. B. Liu(University of Science and Technology of China, Hefei, P. R. China), X. Liu(Institute of High Energy Physics, Beijing, P. R. China), X. H. Liu(Institute of High Energy Physics, Beijing, P. R. China), Y. B. Liu(Nankai University, Tianjin, P. R. China), Y. Liu(Institute of High Energy Physics, Beijing, P. R. China), Z. A. Liu(Institute of High Energy Physics, Beijing, P. R. China), Zhiqiang Liu(Institute of High Energy Physics, Beijing, P. R. China), Zhiqing Liu(Institute of High Energy Physics, Beijing, P. R. China), H. Loehner(KVI/University of Groningen, Groningen, The Netherlands), G. R. Lu(Henan Normal University, Xinxiang, P. R. China), H. J. Lu(Huangshan College, Huangshan, P. R. China), J. G. Lu(Institute of High Energy Physics, Beijing, P. R. China), Q. W. Lu(Shanxi University, Taiyuan, P. R. China), X. R. Lu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), Y. P. Lu(Institute of High Energy Physics, Beijing, P. R. China), C. L. Luo(Nanjing Normal University, Nanjing, P. R. China), M. X. Luo(Zhejiang University, Hangzhou, P. R. China), T. Luo(University of Hawaii, Honolulu, Hawaii, USA), X. L. Luo(Institute of High Energy Physics, Beijing, P. R. China), M. Lv(Institute of High Energy Physics, Beijing, P. R. China), C. L. Ma(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), F. C. Ma(Liaoning University, Shenyang, P. R. China), H. L. Ma(Institute of High Energy Physics, Beijing, P. R. China), Q. M. Ma(Institute of High Energy Physics, Beijing, P. R. China), S. Ma(Institute of High Energy Physics, Beijing, P. R. China), T. Ma(Institute of High Energy Physics, Beijing, P. R. China), X. Y. Ma(Institute of High Energy Physics, Beijing, P. R. China), Y. Ma(Institute of High Energy Physics, Beijing, P. R. China), F. E. Maas(Helmholtz Institute Mainz, Mainz, Germany), M. Maggiora(University of Turin and INFN, Turin, Italy), Q. A. Malik(University of the Punjab, Lahore, Pakistan), H. Mao(Institute of High Energy Physics, Beijing, P. R. China), Y. J. Mao(Peking University, Beijing, P. R. China), Z. P. Mao(Institute of High Energy Physics, Beijing, P. R. China), J. G. Messchendorp(KVI/University of Groningen, Groningen, The Netherlands), J. Min(Institute of High Energy Physics, Beijing, P. R. China), T. J. Min(Institute of High Energy Physics, Beijing, P. R. China), R. E. Mitchell(Indiana University, Bloomington, Indiana, USA), X. H. Mo(Institute of High Energy Physics, Beijing, P. R. China), C. Morales Morales(Helmholtz Institute Mainz, Mainz, Germany), C. Motzko(Bochum Ruhr-University, Bochum, Germany), N. Yu. Muchnoi(G.I. Budker Institute of Nuclear Physics SB RAS), Y. Nefedov(Joint Institute for Nuclear Research, Dubna, Russia), C. Nicholson(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), I. B. Nikolaev(G.I. Budker Institute of Nuclear Physics SB RAS), Z. Ning(Institute of High Energy Physics, Beijing, P. R. China), S. L. Olsen(Seoul National University, Seoul, Korea), Q. Ouyang(Institute of High Energy Physics, Beijing, P. R. China), S. P. Pacetti(18, d), J. W. Park(Seoul National University, Seoul, Korea), M. Pelizaeus(University of Hawaii, Honolulu, Hawaii, USA), K. Peters(GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt, Germany), J. L. Ping(Nanjing Normal University, Nanjing, P. R. China), R. G. Ping(Institute of High Energy Physics, Beijing, P. R. China), R. Poling(University of Minnesota, Minneapolis, MN, USA), E. Prencipe(Johannes Gutenberg University of Mainz, Mainz, Germany), C. S. J. Pun(The University of Hong Kong, Pokfulam, Hong Kong), M. Qi(Nanjing University, Nanjing, P. R. China), S. Qian(Institute of High Energy Physics, Beijing, P. R. China), C. F. Qiao(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), X. S. Qin(Institute of High Energy Physics, Beijing, P. R. China), Y. Qin(Peking University, Beijing, P. R. China), Z. H. Qin(Institute of High Energy Physics, Beijing, P. R. China), J. F. Qiu(Institute of High Energy Physics, Beijing, P. R. China), K. H. Rashid(University of the Punjab, Lahore, Pakistan), G. Rong(Institute of High Energy Physics, Beijing, P. R. China), X. D. Ruan(GuangXi University, Nanning, P.R.China), A. Sarantsev(20, e), J. Schulze(Bochum Ruhr-University, Bochum, Germany), M. Shao(University of Science and Technology of China, Hefei, P. R. China), C. P. Shen(38, f), X. Y. Shen(Institute of High Energy Physics, Beijing, P. R. China), H. Y. Sheng(Institute of High Energy Physics, Beijing, P. R. China), M. R. Shepherd(Indiana University, Bloomington, Indiana, USA), X. Y. Song(Institute of High Energy Physics, Beijing, P. R. China), S. Spataro(University of Turin and INFN, Turin, Italy), B. Spruck(Universitaet Giessen, Giessen, Germany), D. H. Sun(Institute of High Energy Physics, Beijing, P. R. China), G. X. Sun(Institute of High Energy Physics, Beijing, P. R. China), J. F. Sun(Henan Normal University, Xinxiang, P. R. China), S. S. Sun(Institute of High Energy Physics, Beijing, P. R. China), X. D. Sun(Institute of High Energy Physics, Beijing, P. R. China), Y. J. Sun(University of Science and Technology of China, Hefei, P. R. China), Y. Z. Sun(Institute of High Energy Physics, Beijing, P. R. China), Z. J. Sun(Institute of High Energy Physics, Beijing, P. R. China), Z. T. Sun(University of Science and Technology of China, Hefei, P. R. China), C. J. Tang(Sichuan University, Chengdu, P. R. China), X. Tang(Institute of High Energy Physics, Beijing, P. R. China), E. H. Thorndike(University of Rochester, Rochester, New York, USA), H. L. Tian(Institute of High Energy Physics, Beijing, P. R. China), D. Toth(University of Minnesota, Minneapolis, MN, USA), M. U. Ulrich(Universitaet Giessen, Giessen, Germany), G. S. Varner(University of Hawaii, Honolulu, Hawaii, USA), B. Wang(GuangXi University, Nanning, P.R.China), B. Q. Wang(Peking University, Beijing, P. R. China), K. Wang(Institute of High Energy Physics, Beijing, P. R. China), L. L. Wang(China Center of Advanced Science and Technology, Beijing, P. R. China), L. S. Wang(Institute of High Energy Physics, Beijing, P. R. China), M. Wang(Shandong University, Jinan, P. R. China), P. Wang(Institute of High Energy Physics, Beijing, P. R. China), P. L. Wang(Institute of High Energy Physics, Beijing, P. R. China), Q. Wang(Peking University, Beijing, P. R. China), Q. J. Wang(Institute of High Energy Physics, Beijing, P. R. China), S. G. Wang(Peking University, Beijing, P. R. China), X. F. Wang(Henan Normal University, Xinxiang, P. R. China), X. L. Wang(University of Science and Technology of China, Hefei, P. R. China), Y. D. Wang(University of Science and Technology of China, Hefei, P. R. China), Y. F. Wang(Institute of High Energy Physics, Beijing, P. R. China), Y. Q. Wang(Shandong University, Jinan, P. R. China), Z. Wang(Institute of High Energy Physics, Beijing, P. R. China), Z. G. Wang(Institute of High Energy Physics, Beijing, P. R. China), Z. Y. Wang(Institute of High Energy Physics, Beijing, P. R. China), D. H. Wei(Guangxi Normal University, Guilin, P. R. China), P. Weidenkaff(Johannes Gutenberg University of Mainz, Mainz, Germany), Q. G. Wen(University of Science and Technology of China, Hefei, P. R. China), S. P. Wen(Institute of High Energy Physics, Beijing, P. R. China), M. W. Werner(Universitaet Giessen, Giessen, Germany), U. Wiedner(Bochum Ruhr-University, Bochum, Germany), L. H. Wu(Institute of High Energy Physics, Beijing, P. R. China), N. Wu(Institute of High Energy Physics, Beijing, P. R. China), S. X. Wu(University of Science and Technology of China, Hefei, P. R. China), W. Wu(Nankai University, Tianjin, P. R. China), Z. Wu(Institute of High Energy Physics, Beijing, P. R. China), L. G. Xia(Tsinghua University, Beijing, P. R. China), Z. J. Xiao(Nanjing Normal University, Nanjing, P. R. China), Y. G. Xie(Institute of High Energy Physics, Beijing, P. R. China), Q. L. Xiu(Institute of High Energy Physics, Beijing, P. R. China), G. F. Xu(Institute of High Energy Physics, Beijing, P. R. China), G. M. Xu(Peking University, Beijing, P. R. China), H. Xu(Institute of High Energy Physics, Beijing, P. R. China), Q. J. Xu(Hangzhou Normal University, Hangzhou, P. R. China), X. P. Xu(Soochow University, Suzhou, China), Y. Xu(Nankai University, Tianjin, P. R. China), Z. R. Xu(University of Science and Technology of China, Hefei, P. R. China), F. Xue(Huazhong Normal University, Wuhan, P. R. China), Z. Xue(Institute of High Energy Physics, Beijing, P. R. China), L. Yan(University of Science and Technology of China, Hefei, P. R. China), W. B. Yan(University of Science and Technology of China, Hefei, P. R. China), Y. H. Yan(Hunan University, Changsha, P. R. China), H. X. Yang(Institute of High Energy Physics, Beijing, P. R. China), T. Yang(GuangXi University, Nanning, P.R.China), Y. Yang(Huazhong Normal University, Wuhan, P. R. China), Y. X. Yang(Guangxi Normal University, Guilin, P. R. China), H. Ye(Institute of High Energy Physics, Beijing, P. R. China), M. Ye(Institute of High Energy Physics, Beijing, P. R. China), M. H. Ye(China Center of Advanced Science and Technology, Beijing, P. R. China), B. X. Yu(Institute of High Energy Physics, Beijing, P. R. China), C. X. Yu(Nankai University, Tianjin, P. R. China), J. S. Yu(Lanzhou University, Lanzhou, P. R. China), S. P. Yu(Shandong University, Jinan, P. R. China), C. Z. Yuan(Institute of High Energy Physics, Beijing, P. R. China), W. L. Yuan(Nanjing Normal University, Nanjing, P. R. China), Y. Yuan(Institute of High Energy Physics, Beijing, P. R. China), A. A. Zafar(University of the Punjab, Lahore, Pakistan), A. Z. Zallo(INFN Laboratori Nazionali di Frascati, Frascati, Italy), Y. Zeng(Hunan University, Changsha, P. R. China), B. X. Zhang(Institute of High Energy Physics, Beijing, P. R. China), B. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), C. C. Zhang(Institute of High Energy Physics, Beijing, P. R. China), D. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), H. H. Zhang(Sun Yat-Sen University, Guangzhou, P. R. China), H. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Zhang(Nanjing Normal University, Nanjing, P. R. China), J. G. Zhang(Henan Normal University, Xinxiang, P. R. China), J. Q. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. W. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Z. Zhang(Institute of High Energy Physics, Beijing, P. R. China), L. Zhang(Nanjing University, Nanjing, P. R. China), S. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), T. R. Zhang(Nanjing Normal University, Nanjing, P. R. China), X. J. Zhang(Institute of High Energy Physics, Beijing, P. R. China), X. Y. Zhang(Shandong University, Jinan, P. R. China), Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), Y. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), Y. S. Zhang(GuangXi University, Nanning, P.R.China), Z. P. Zhang(University of Science and Technology of China, Hefei, P. R. China), Z. Y. Zhang(Wuhan University, Wuhan, P. R. China), G. Zhao(Institute of High Energy Physics, Beijing, P. R. China), H. S. Zhao(Institute of High Energy Physics, Beijing, P. R. China), J. W. Zhao(Institute of High Energy Physics, Beijing, P. R. China), K. X. Zhao(Nanjing Normal University, Nanjing, P. R. China), Lei Zhao(University of Science and Technology of China, Hefei, P. R. China), Ling Zhao(Institute of High Energy Physics, Beijing, P. R. China), M. G. Zhao(Nankai University, Tianjin, P. R. China), Q. Zhao(Institute of High Energy Physics, Beijing, P. R. China), S. J. Zhao(Zhengzhou University, Zhengzhou, P. R. China), T. C. Zhao(Institute of High Energy Physics, Beijing, P. R. China), X. H. Zhao(Nanjing University, Nanjing, P. R. China), Y. B. Zhao(Institute of High Energy Physics, Beijing, P. R. China), Z. G. Zhao(University of Science and Technology of China, Hefei, P. R. China), A. Zhemchugov(20, a), B. Zheng(University of South China, Hengyang, P. R. China), J. P. Zheng(Institute of High Energy Physics, Beijing, P. R. China), Y. H. Zheng(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), Z. P. Zheng(Institute of High Energy Physics, Beijing, P. R. China), B. Zhong(Institute of High Energy Physics, Beijing, P. R. China), J. Zhong(Bochum Ruhr-University, Bochum, Germany), L. Zhou(Institute of High Energy Physics, Beijing, P. R. China), X. K. Zhou(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), X. R. Zhou(University of Science and Technology of China, Hefei, P. R. China), C. Zhu(Institute of High Energy Physics, Beijing, P. R. China), K. Zhu(Institute of High Energy Physics, Beijing, P. R. China), K. J. Zhu(Institute of High Energy Physics, Beijing, P. R. China), S. H. Zhu(Institute of High Energy Physics, Beijing, P. R. China), X. L. Zhu(Tsinghua University, Beijing, P. R. China), X. W. Zhu(Institute of High Energy Physics, Beijing, P. R. China), Y. M. Zhu(Nankai University, Tianjin, P. R. China), Y. S. Zhu(Institute of High Energy Physics, Beijing, P. R. China), Z. A. Zhu(Institute of High Energy Physics, Beijing, P. R. China), J. Zhuang(Institute of High Energy Physics, Beijing, P. R. China), B. S. Zou(Institute of High Energy Physics, Beijing, P. R. China), J. H. Zou(Institute of High Energy Physics, Beijing, P. R. China), and J. X. Zuo(Institute of High Energy Physics, Beijing, P. R. China)

Subjects
hep-ex, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The decays $J/\psi\to p\bar{p}$ and $J/\psi\to n\bar{n}$ have been investigated with a sample of 225.2 million $J/\psi$ events collected with the BESIII detector at the BEPCII $e^+e^-$ collider. The branching fractions are determined to be $\mathcal{B}(J/\psi\to p\bar{p})=(2.112\pm0.004\pm0.031)\times10^{-3}$ and $\mathcal{B}(J/\psi\to n\bar{n})=(2.07\pm0.01\pm0.17)\times10^{-3}$. Distributions of the angle $\theta$ between the proton or anti-neutron and the beam direction are well described by the form $1+\alpha\cos^2\theta$, and we find $\alpha=0.595\pm0.012\pm0.015$ for $J/\psi\to p\bar{p}$ and $\alpha=0.50\pm0.04\pm0.21$ for $J/\psi\to n\bar{n}$. Our branching-fraction results suggest a large phase angle between the strong and electromagnetic amplitudes describing the $J/\psi\to N\bar{N}$ decay.

Published
2015

47. Observation of Electromagnetic Dalitz decays J/ψ\to P e^+e^

Author

M. AblikimInstitute of High Energy Physics, M. N. Achasov(8, a), X. C. Ai(Institute of High Energy Physics), O. Albayrak(Carnegie Mellon University), M. Albrecht(, Bochum Ruhr-University, Germany), D. J. Ambrose(University of Rochester), F. F. An(Institute of High Energy Physics), Q. An(University of Science and Technology of China), J. Z. Bai(Institute of High Energy Physics), R. Baldini Ferroli(19A), Y. Ban(Peking University), J. V. Bennett(Indiana University), M. Bertani(19A), J. M. Bian(University of Minnesota), E. Boger(21, b), O. Bondarenko(KVI, University of Groningen), I. Boyko(Joint Institute for Nuclear Research), S. Braun(Universitaet Giessen), R. A. Briere(Carnegie Mellon University), H. Cai(Wuhan University), X. Cai(Institute of High Energy Physics), O. Cakir(36A), A. Calcaterra(19A), G. F. Cao(Institute of High Energy Physics), S. A. Cetin(36B), J. F. Chang(Institute of High Energy Physics), G. Chelkov(21, b), G. Chen(Institute of High Energy Physics), H. S. Chen(Institute of High Energy Physics), J. C. Chen(Institute of High Energy Physics), M. L. Chen(Institute of High Energy Physics), S. J. Chen(Nanjing University), X. Chen(Institute of High Energy Physics), X. R. Chen(Lanzhou University), Y. B. Chen(Institute of High Energy Physics), H. P. Cheng(Huangshan College), X. K. Chu(Peking University), Y. P. Chu(Institute of High Energy Physics), D. Cronin-Hennessy(University of Minnesota), H. L. Dai(Institute of High Energy Physics), J. P. Dai(Institute of High Energy Physics), D. Dedovich(Joint Institute for Nuclear Research), Z. Y. Deng(Institute of High Energy Physics), A. Denig(Johannes Gutenberg University of Mainz), I. Denysenko(Joint Institute for Nuclear Research), M. Destefanis(45A,45C), W. M. Ding(Shandong University), Y. Ding(Liaoning University), C. Dong(Nankai university), J. Dong(Institute of High Energy Physics), L. Y. Dong(Institute of High Energy Physics), M. Y. Dong(Institute of High Energy Physics), S. X. Du(Zhengzhou University), J. Z. Fan(Tsinghua University), J. Fang(Institute of High Energy Physics), S. S. Fang(Institute of High Energy Physics), Y. Fang(Institute of High Energy Physics), L. Fava(45B,45C), C. Q. Feng(University of Science and Technology of China), C. D. Fu(Institute of High Energy Physics), J. L. Fu(Nanjing University), O. Fuks(21, b), Q. Gao(Institute of High Energy Physics), Y. Gao(Tsinghua University), C. Geng(University of Science and Technology of China), K. Goetzen(GSI Helmholtzcentre for Heavy Ion Research GmbH), W. X. Gong(Institute of High Energy Physics), W. Gradl(Johannes Gutenberg University of Mainz), M. Greco(45A,45C), M. H. Gu(Institute of High Energy Physics), Y. T. Gu(GuangXi University), Y. H. Guan(Institute of High Energy Physics), A. Q. Guo(Nankai university), L. B. Guo(Nanjing Normal University), T. Guo(Nanjing Normal University), Y. P. Guo(Johannes Gutenberg University of Mainz), Y. L. Han(Institute of High Energy Physics), F. A. Harris(University of Hawaii), K. L. He(Institute of High Energy Physics), M. He(Institute of High Energy Physics), Z. Y. He(Nankai university), T. Held(, Bochum Ruhr-University, Germany), Y. K. Heng(Institute of High Energy Physics), Z. L. Hou(Institute of High Energy Physics), C. Hu(Nanjing Normal University), H. M. Hu(Institute of High Energy Physics), J. F. Hu(Universitaet Giessen), T. Hu(Institute of High Energy Physics), G. M. Huang(Central China Normal University), G. S. Huang(University of Science and Technology of China), H. P. Huang(Wuhan University), J. S. Huang(Henan Normal University), L. Huang(Institute of High Energy Physics), X. T. Huang(Shandong University), Y. Huang(Nanjing University), T. Hussain(University of the Punjab), C. S. Ji(University of Science and Technology of China), Q. Ji(Institute of High Energy Physics), Q. P. Ji(Nankai university), X. B. Ji(Institute of High Energy Physics), X. L. Ji(Institute of High Energy Physics), L. L. Jiang(Institute of High Energy Physics), L. W. Jiang(Wuhan University), X. S. Jiang(Institute of High Energy Physics), J. B. Jiao(Shandong University), Z. Jiao(Huangshan College), D. P. Jin(Institute of High Energy Physics), S. Jin(Institute of High Energy Physics), T. Johansson(Uppsala University), N. Kalantar-Nayestanaki(KVI, University of Groningen), X. L. Kang(Institute of High Energy Physics), X. S. Kang(Nankai university), M. Kavatsyuk(KVI, University of Groningen), B. Kloss(Johannes Gutenberg University of Mainz), B. Kopf(, Bochum Ruhr-University, Germany), M. Kornicer(University of Hawaii), W. Kuehn(Universitaet Giessen), A. Kupsc(Uppsala University), W. Lai(Institute of High Energy Physics), J. S. Lange(Universitaet Giessen), M. Lara(Indiana University), P. Larin(Helmholtz Institute Mainz), M. Leyhe(, Bochum Ruhr-University, Germany), C. H. Li(Institute of High Energy Physics), Cheng Li(University of Science and Technology of China), Cui Li(University of Science and Technology of China), D. Li(Hunan University), D. M. Li(Zhengzhou University), F. Li(Institute of High Energy Physics), G. Li(Institute of High Energy Physics), H. B. Li(Institute of High Energy Physics), J. C. Li(Institute of High Energy Physics), K. Li(Shandong University), Lei Li(Institute of High Energy Physics), P. R. Li(University of Chinese Academy of Sciences), Q. J. Li(Institute of High Energy Physics), T. Li(Shandong University), W. D. Li(Institute of High Energy Physics), W. G. Li(Institute of High Energy Physics), X. L. Li(Shandong University), X. N. Li(Institute of High Energy Physics), X. Q. Li(Nankai university), Z. B. Li(Sun Yat-Sen University), H. Liang(University of Science and Technology of China), Y. F. Liang(Sichuan University), Y. T. Liang(Universitaet Giessen), D. X. Lin(Helmholtz Institute Mainz), B. J. Liu(Institute of High Energy Physics), C. L. Liu(Carnegie Mellon University), C. X. Liu(Institute of High Energy Physics), F. H. Liu(Shanxi University), Fang Liu(Institute of High Energy Physics), Feng Liu(Central China Normal University), H. B. Liu(GuangXi University), H. H. Liu(Henan University of Science and Technology), H. M. Liu(Institute of High Energy Physics), J. Liu(Institute of High Energy Physics), J. P. Liu(Wuhan University), K. Liu(Tsinghua University), K. Y. Liu(Liaoning University), P. L. Liu(Shandong University), Q. Liu(University of Chinese Academy of Sciences), S. B. Liu(University of Science and Technology of China), X. Liu(Institute of High Energy Physics), Y. B. Liu(Nankai university), Z. A. Liu(Institute of High Energy Physics), Zhiqiang Liu(Institute of High Energy Physics), Zhiqing Liu(Johannes Gutenberg University of Mainz), H. Loehner(KVI, University of Groningen), X. C. Lou(1, c), G. R. Lu(Henan Normal University), H. J. Lu(Huangshan College), H. L. Lu(Institute of High Energy Physics), J. G. Lu(Institute of High Energy Physics), X. R. Lu(University of Chinese Academy of Sciences), Y. Lu(Institute of High Energy Physics), Y. P. Lu(Institute of High Energy Physics), C. L. Luo(Nanjing Normal University), M. X. Luo(Zhejiang University), T. Luo(University of Hawaii), X. L. Luo(Institute of High Energy Physics), M. Lv(Institute of High Energy Physics), F. C. Ma(Liaoning University), H. L. Ma(Institute of High Energy Physics), Q. M. Ma(Institute of High Energy Physics), S. Ma(Institute of High Energy Physics), T. Ma(Institute of High Energy Physics), X. Y. Ma(Institute of High Energy Physics), F. E. Maas(Helmholtz Institute Mainz), M. Maggiora(45A,45C), Q. A. Malik(University of the Punjab), Y. J. Mao(Peking University), Z. P. Mao(Institute of High Energy Physics), J. G. Messchendorp(KVI, University of Groningen), J. Min(Institute of High Energy Physics), T. J. Min(Institute of High Energy Physics), R. E. Mitchell(Indiana University), X. H. Mo(Institute of High Energy Physics), Y. J. Mo(Central China Normal University), H. Moeini(KVI, University of Groningen), C. Morales Morales(Helmholtz Institute Mainz), K. Moriya(Indiana University), N. Yu. Muchnoi(8, a), H. Muramatsu(University of Minnesota), Y. Nefedov(Joint Institute for Nuclear Research), I. B. Nikolaev(8, a), Z. Ning(Institute of High Energy Physics), S. Nisar(COMSATS Institute of Information Technology), X. Y. Niu(Institute of High Energy Physics), S. L. Olsen(Seoul National University), Q. Ouyang(Institute of High Energy Physics), S. Pacetti(19B), M. Pelizaeus(, Bochum Ruhr-University, Germany), H. P. Peng(University of Science and Technology of China), K. Peters(GSI Helmholtzcentre for Heavy Ion Research GmbH), J. L. Ping(Nanjing Normal University), R. G. Ping(Institute of High Energy Physics), R. Poling(University of Minnesota), N. Q.(Wuhan University), M. Qi(Nanjing University), S. Qian(Institute of High Energy Physics), C. F. Qiao(University of Chinese Academy of Sciences), L. Q. Qin(Shandong University), X. S. Qin(Institute of High Energy Physics), Y. Qin(Peking University), Z. H. Qin(Institute of High Energy Physics), J. F. Qiu(Institute of High Energy Physics), K. H. Rashid(University of the Punjab), C. F. Redmer(Johannes Gutenberg University of Mainz), M. Ripka(Johannes Gutenberg University of Mainz), G. Rong(Institute of High Energy Physics), X. D. Ruan(GuangXi University), A. Sarantsev(21, d), K. Schoenning(Uppsala University), S. Schumann(Johannes Gutenberg University of Mainz), W. Shan(Peking University), M. Shao(University of Science and Technology of China), C. P. Shen(Beihang University), X. Y. Shen(Institute of High Energy Physics), H. Y. Sheng(Institute of High Energy Physics), M. R. Shepherd(Indiana University), W. M. Song(Institute of High Energy Physics), X. Y. Song(Institute of High Energy Physics), S. Spataro(45A,45C), B. Spruck(Universitaet Giessen), G. X. Sun(Institute of High Energy Physics), J. F. Sun(Henan Normal University), S. S. Sun(Institute of High Energy Physics), Y. J. Sun(University of Science and Technology of China), Y. Z. Sun(Institute of High Energy Physics), Z. J. Sun(Institute of High Energy Physics), Z. T. Sun(University of Science and Technology of China), C. J. Tang(Sichuan University), X. Tang(Institute of High Energy Physics), I. Tapan(36C), E. H. Thorndike(University of Rochester), D. Toth(University of Minnesota), M. Ullrich(Universitaet Giessen), I. Uman(36B), G. S. Varner(University of Hawaii), B. Wang(Nankai university), D. Wang(Peking University), D. Y. Wang(Peking University), K. Wang(Institute of High Energy Physics), L. L. Wang(Institute of High Energy Physics), L. S. Wang(Institute of High Energy Physics), M. Wang(Shandong University), P. Wang(Institute of High Energy Physics), P. L. Wang(Institute of High Energy Physics), Q. J. Wang(Institute of High Energy Physics), S. G. Wang(Peking University), W. Wang(Institute of High Energy Physics), X. F. Wang(Tsinghua University), Y. D. Wang(19A), Y. F. Wang(Institute of High Energy Physics), Y. Q. Wang(Johannes Gutenberg University of Mainz), Z. Wang(Institute of High Energy Physics), Z. G. Wang(Institute of High Energy Physics), Z. H. Wang(University of Science and Technology of China), Z. Y. Wang(Institute of High Energy Physics), D. H. Wei(Guangxi Normal University), J. B. Wei(Peking University), P. Weidenkaff(Johannes Gutenberg University of Mainz), S. P. Wen(Institute of High Energy Physics), M. Werner(Universitaet Giessen), U. Wiedner(, Bochum Ruhr-University, Germany), M. Wolke(Uppsala University), L. H. Wu(Institute of High Energy Physics), N. Wu(Institute of High Energy Physics), Z. Wu(Institute of High Energy Physics), L. G. Xia(Tsinghua University), Y. Xia(Hunan University), D. Xiao(Institute of High Energy Physics), Z. J. Xiao(Nanjing Normal University), Y. G. Xie(Institute of High Energy Physics), Q. L. Xiu(Institute of High Energy Physics), G. F. Xu(Institute of High Energy Physics), L. Xu(Institute of High Energy Physics), Q. J. Xu(Hangzhou Normal University), Q. N. Xu(University of Chinese Academy of Sciences), X. P. Xu(Soochow University), Z. Xue(Institute of High Energy Physics), L. Yan(University of Science and Technology of China), W. B. Yan(University of Science and Technology of China), W. C. Yan(University of Science and Technology of China), Y. H. Yan(Hunan University), H. X. Yang(Institute of High Energy Physics), L. Yang(Wuhan University), Y. Yang(Central China Normal University), Y. X. Yang(Guangxi Normal University), H. Ye(Institute of High Energy Physics), M. Ye(Institute of High Energy Physics), M. H. Ye(China Center of Advanced Science and Technology), B. X. Yu(Institute of High Energy Physics), C. X. Yu(Nankai university), H. W. Yu(Peking University), J. S. Yu(Lanzhou University), S. P. Yu(Shandong University), C. Z. Yuan(Institute of High Energy Physics), W. L. Yuan(Nanjing University), Y. Yuan(Institute of High Energy Physics), A. Yuncu(36B), A. A. Zafar(University of the Punjab), A. Zallo(19A), S. L. Zang(Nanjing University), Y. Zeng(Hunan University), B. X. Zhang(Institute of High Energy Physics), B. Y. Zhang(Institute of High Energy Physics), C. Zhang(Nanjing University), C. B. Zhang(Hunan University), C. C. Zhang(Institute of High Energy Physics), D. H. Zhang(Institute of High Energy Physics), H. H. Zhang(Sun Yat-Sen University), H. Y. Zhang(Institute of High Energy Physics), J. J. Zhang(Institute of High Energy Physics), J. Q. Zhang(Institute of High Energy Physics), J. W. Zhang(Institute of High Energy Physics), J. Y. Zhang(Institute of High Energy Physics), J. Z. Zhang(Institute of High Energy Physics), S. H. Zhang(Institute of High Energy Physics), X. J. Zhang(Institute of High Energy Physics), X. Y. Zhang(Shandong University), Y. Zhang(Institute of High Energy Physics), Y. H. Zhang(Institute of High Energy Physics), Z. H. Zhang(Central China Normal University), Z. P. Zhang(University of Science and Technology of China), Z. Y. Zhang(Wuhan University), G. Zhao(Institute of High Energy Physics), J. W. Zhao(Institute of High Energy Physics), Lei Zhao(University of Science and Technology of China), Ling Zhao(Institute of High Energy Physics), M. G. Zhao(Nankai university), Q. Zhao(Institute of High Energy Physics), Q. W. Zhao(Institute of High Energy Physics), S. J. Zhao(Zhengzhou University), T. C. Zhao(Institute of High Energy Physics), X. H. Zhao(Nanjing University), Y. B. Zhao(Institute of High Energy Physics), Z. G. Zhao(University of Science and Technology of China), A. Zhemchugov(21, b), B. Zheng(University of South China), J. P. Zheng(Institute of High Energy Physics), Y. H. Zheng(University of Chinese Academy of Sciences), B. Zhong(Nanjing Normal University), L. Zhou(Institute of High Energy Physics), Li Zhou(Nankai university), X. Zhou(Wuhan University), X. K. Zhou(University of Chinese Academy of Sciences), X. R. Zhou(University of Science and Technology of China), X. Y. Zhou(Institute of High Energy Physics), K. Zhu(Institute of High Energy Physics), K. J. Zhu(Institute of High Energy Physics), S. H. Zhu(Institute of High Energy Physics), X. L. Zhu(Tsinghua University), Y. C. Zhu(University of Science and Technology of China), Y. S. Zhu(Institute of High Energy Physics), Z. A. Zhu(Institute of High Energy Physics), J. Zhuang(Institute of High Energy Physics), B. S. Zou(Institute of High Energy Physics), and J. H. Zou(Institute of High Energy Physics)

Subjects
hep-ex, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract

Based on a sample of (225.3\pm2.8)\times 10^{6} J/\psi events collected with the BESIII detector, the electromagnetic Dalitz decays of J/\psi \to P e^+e^-(P=\eta'/\eta/\pi^0) are studied. By reconstructing the pseudoscalar mesons in various decay modes, the decays J/\psi \to \eta' e^+e^-, J/\psi \to \eta e^+e^- and J/\psi \to \pi^0 e^+e^- are observed for the first time. The branching fractions are determined to be \mathcal{B}(J/\psi\to \eta' e^+e^-) = (5.81\pm0.16\pm0.31)\times10^{-5}, \mathcal{B}(J/\psi\to \eta e^+e^-) = (1.16\pm0.07\pm0.06)\times10^{-5}, and \mathcal{B}(J/\psi\to \pi^0 e^+e^-)=(7.56\pm1.32\pm0.50)\times10^{-7}, where the first errors are statistical and the second ones systematic.

Published
2015

48. Two-photon widths of the $χ_{c0, 2}$ states and helicity analysis for $χ_{c2}\arγγ$}

Author

BESIII Collaboration, M. Ablikim(Institute of High Energy Physics, Beijing, P. R. China), M. N. Achasov(G.I. Budker Institute of Nuclear Physics SB RAS), D. J. Ambrose(University of Rochester, Rochester, New York, USA), F. F. An(Institute of High Energy Physics, Beijing, P. R. China), Q. An(University of Science and Technology of China, Hefei, P. R. China), Z. H. An(Institute of High Energy Physics, Beijing, P. R. China), J. Z. Bai(Institute of High Energy Physics, Beijing, P. R. China), R. B. Ferroli(INFN Laboratori Nazionali di Frascati, Frascati, Italy), Y. Ban(Peking University, Beijing, P. R. China), J. Becker(Bochum Ruhr-University, Bochum, Germany), N. Berger(Institute of High Energy Physics, Beijing, P. R. China), M. B. Bertani(INFN Laboratori Nazionali di Frascati, Frascati, Italy), J. M. Bian(University of Minnesota, Minneapolis, MN, USA), E. Boger(20, a), O. Bondarenko(KVI/University of Groningen, Groningen, The Netherlands), I. Boyko(Joint Institute for Nuclear Research, Dubna, Russia), R. A. Briere(Carnegie Mellon University, Pittsburgh, PA, USA), V. Bytev(Joint Institute for Nuclear Research, Dubna, Russia), X. Cai(Institute of High Energy Physics, Beijing, P. R. China), A. C. Calcaterra(INFN Laboratori Nazionali di Frascati, Frascati, Italy), G. F. Cao(Institute of High Energy Physics, Beijing, P. R. China), J. F. Chang(Institute of High Energy Physics, Beijing, P. R. China), G. Chelkov(20, a), G. Chen(Institute of High Energy Physics, Beijing, P. R. China), H. S. Chen(Institute of High Energy Physics, Beijing, P. R. China), J. C. Chen(Institute of High Energy Physics, Beijing, P. R. China), M. L. Chen(Institute of High Energy Physics, Beijing, P. R. China), S. J. Chen(Nanjing University, Nanjing, P. R. China), Y. Chen(Institute of High Energy Physics, Beijing, P. R. China), Y. B. Chen(Institute of High Energy Physics, Beijing, P. R. China), H. P. Cheng(Huangshan College, Huangshan, P. R. China), Y. P. Chu(Institute of High Energy Physics, Beijing, P. R. China), D. Cronin-Hennessy(University of Minnesota, Minneapolis, MN, USA), H. L. Dai(Institute of High Energy Physics, Beijing, P. R. China), J. P. Dai(Institute of High Energy Physics, Beijing, P. R. China), D. Dedovich(Joint Institute for Nuclear Research, Dubna, Russia), Z. Y. Deng(Institute of High Energy Physics, Beijing, P. R. China), A. Denig(Johannes Gutenberg University of Mainz, Mainz, Germany), I. Denysenko(20, b), M. Destefanis(University of Turin and INFN, Turin, Italy), W. M. Ding(Shandong University, Jinan, P. R. China), Y. Ding(Liaoning University, Shenyang, P. R. China), L. Y. Dong(Institute of High Energy Physics, Beijing, P. R. China), M. Y. Dong(Institute of High Energy Physics, Beijing, P. R. China), S. X. Du(Zhengzhou University, Zhengzhou, P. R. China), J. Fang(Institute of High Energy Physics, Beijing, P. R. China), S. S. Fang(Institute of High Energy Physics, Beijing, P. R. China), L. Fava(44, c), F. Feldbauer(Bochum Ruhr-University, Bochum, Germany), C. Q. Feng(University of Science and Technology of China, Hefei, P. R. China), C. D. Fu(Institute of High Energy Physics, Beijing, P. R. China), J. L. Fu(Nanjing University, Nanjing, P. R. China), Y. Gao(Tsinghua University, Beijing, P. R. China), C. Geng(University of Science and Technology of China, Hefei, P. R. China), K. Goetzen(GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt, Germany), W. X. Gong(Institute of High Energy Physics, Beijing, P. R. China), W. Gradl(Johannes Gutenberg University of Mainz, Mainz, Germany), M. Greco(University of Turin and INFN, Turin, Italy), M. H. Gu(Institute of High Energy Physics, Beijing, P. R. China), Y. T. Gu(GuangXi University, Nanning, P.R.China), Y. H. Guan(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), A. Q. Guo(Nankai University, Tianjin, P. R. China), L. B. Guo(Nanjing Normal University, Nanjing, P. R. China), Y. P. Guo(Nankai University, Tianjin, P. R. China), Y. L. Han(Institute of High Energy Physics, Beijing, P. R. China), X. Q. Hao(Institute of High Energy Physics, Beijing, P. R. China), F. A. Harris(University of Hawaii, Honolulu, Hawaii, USA), K. L. He(Institute of High Energy Physics, Beijing, P. R. China), M. He(Institute of High Energy Physics, Beijing, P. R. China), Z. Y. He(Nankai University, Tianjin, P. R. China), T. Held(Bochum Ruhr-University, Bochum, Germany), Y. K. Heng(Institute of High Energy Physics, Beijing, P. R. China), Z. L. Hou(Institute of High Energy Physics, Beijing, P. R. China), H. M. Hu(Institute of High Energy Physics, Beijing, P. R. China), J. F. Hu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), T. Hu(Institute of High Energy Physics, Beijing, P. R. China), B. Huang(Institute of High Energy Physics, Beijing, P. R. China), G. M. Huang(Huazhong Normal University, Wuhan, P. R. China), J. S. Huang(Henan Normal University, Xinxiang, P. R. China), X. T. Huang(Shandong University, Jinan, P. R. China), Y. P. Huang(Institute of High Energy Physics, Beijing, P. R. China), T. Hussain(University of the Punjab, Lahore, Pakistan), C. S. Ji(University of Science and Technology of China, Hefei, P. R. China), Q. Ji(Institute of High Energy Physics, Beijing, P. R. China), X. B. Ji(Institute of High Energy Physics, Beijing, P. R. China), X. L. Ji(Institute of High Energy Physics, Beijing, P. R. China), L. K. Jia(Institute of High Energy Physics, Beijing, P. R. China), L. L. Jiang(Institute of High Energy Physics, Beijing, P. R. China), X. S. Jiang(Institute of High Energy Physics, Beijing, P. R. China), J. B. Jiao(Shandong University, Jinan, P. R. China), Z. Jiao(Huangshan College, Huangshan, P. R. China), D. P. Jin(Institute of High Energy Physics, Beijing, P. R. China), S. Jin(Institute of High Energy Physics, Beijing, P. R. China), F. F. Jing(Tsinghua University, Beijing, P. R. China), N. Kalantar-Nayestanaki(KVI/University of Groningen, Groningen, The Netherlands), M. Kavatsyuk(KVI/University of Groningen, Groningen, The Netherlands), W. Kuehn(Universitaet Giessen, Giessen, Germany), W. Lai(Institute of High Energy Physics, Beijing, P. R. China), J. S. Lange(Universitaet Giessen, Giessen, Germany), J. K. C. Leung(The University of Hong Kong, Pokfulam, Hong Kong), C. H. Li(Institute of High Energy Physics, Beijing, P. R. China), Cheng Li(University of Science and Technology of China, Hefei, P. R. China), Cui Li(University of Science and Technology of China, Hefei, P. R. China), D. M. Li(Zhengzhou University, Zhengzhou, P. R. China), F. Li(Institute of High Energy Physics, Beijing, P. R. China), G. Li(Institute of High Energy Physics, Beijing, P. R. China), H. B. Li(Institute of High Energy Physics, Beijing, P. R. China), J. C. Li(Institute of High Energy Physics, Beijing, P. R. China), K. Li(Hangzhou Normal University, Hangzhou, P. R. China), Lei Li(Institute of High Energy Physics, Beijing, P. R. China), N. B. Li(Nanjing Normal University, Nanjing, P. R. China), Q. J. Li(Institute of High Energy Physics, Beijing, P. R. China), S. L. Li(Institute of High Energy Physics, Beijing, P. R. China), W. D. Li(Institute of High Energy Physics, Beijing, P. R. China), W. G. Li(Institute of High Energy Physics, Beijing, P. R. China), X. L. Li(Shandong University, Jinan, P. R. China), X. N. Li(Institute of High Energy Physics, Beijing, P. R. China), X. Q. Li(Nankai University, Tianjin, P. R. China), X. R. Li(Seoul National University, Seoul, Korea), Z. B. Li(Sun Yat-Sen University, Guangzhou, P. R. China), H. Liang(University of Science and Technology of China, Hefei, P. R. China), Y. F. Liang(Sichuan University, Chengdu, P. R. China), Y. T. Liang(Universitaet Giessen, Giessen, Germany), G. R. Liao(Tsinghua University, Beijing, P. R. China), X. T. Liao(Institute of High Energy Physics, Beijing, P. R. China), B. J. Liu(Institute of High Energy Physics, Beijing, P. R. China), C. L. Liu(Carnegie Mellon University, Pittsburgh, PA, USA), C. X. Liu(Institute of High Energy Physics, Beijing, P. R. China), C. Y. Liu(Institute of High Energy Physics, Beijing, P. R. China), F. H. Liu(Shanxi University, Taiyuan, P. R. China), Fang Liu(Institute of High Energy Physics, Beijing, P. R. China), Feng Liu(Huazhong Normal University, Wuhan, P. R. China), H. Liu(Shanxi University, Taiyuan, P. R. China), H. B. Liu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), H. H. Liu(Henan University of Science and Technology, Luoyang, P. R. China), H. M. Liu(Institute of High Energy Physics, Beijing, P. R. China), H. W. Liu(Institute of High Energy Physics, Beijing, P. R. China), J. P. Liu(Wuhan University, Wuhan, P. R. China), Kun Liu(Peking University, Beijing, P. R. China), Kai Liu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), K. Y. Liu(Liaoning University, Shenyang, P. R. China), P. L. Liu(Shandong University, Jinan, P. R. China), S. B. Liu(University of Science and Technology of China, Hefei, P. R. China), X. Liu(Institute of High Energy Physics, Beijing, P. R. China), X. H. Liu(Institute of High Energy Physics, Beijing, P. R. China), Y. B. Liu(Nankai University, Tianjin, P. R. China), Y. Liu(Institute of High Energy Physics, Beijing, P. R. China), Z. A. Liu(Institute of High Energy Physics, Beijing, P. R. China), Zhiqiang Liu(Institute of High Energy Physics, Beijing, P. R. China), Zhiqing Liu(Institute of High Energy Physics, Beijing, P. R. China), H. Loehner(KVI/University of Groningen, Groningen, The Netherlands), G. R. Lu(Henan Normal University, Xinxiang, P. R. China), H. J. Lu(Huangshan College, Huangshan, P. R. China), J. G. Lu(Institute of High Energy Physics, Beijing, P. R. China), Q. W. Lu(Shanxi University, Taiyuan, P. R. China), X. R. Lu(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), Y. P. Lu(Institute of High Energy Physics, Beijing, P. R. China), C. L. Luo(Nanjing Normal University, Nanjing, P. R. China), M. X. Luo(Zhejiang University, Hangzhou, P. R. China), T. Luo(University of Hawaii, Honolulu, Hawaii, USA), X. L. Luo(Institute of High Energy Physics, Beijing, P. R. China), M. Lv(Institute of High Energy Physics, Beijing, P. R. China), C. L. Ma(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), F. C. Ma(Liaoning University, Shenyang, P. R. China), H. L. Ma(Institute of High Energy Physics, Beijing, P. R. China), Q. M. Ma(Institute of High Energy Physics, Beijing, P. R. China), S. Ma(Institute of High Energy Physics, Beijing, P. R. China), T. Ma(Institute of High Energy Physics, Beijing, P. R. China), X. Y. Ma(Institute of High Energy Physics, Beijing, P. R. China), Y. Ma(Institute of High Energy Physics, Beijing, P. R. China), F. E. Maas(Helmholtz Institute Mainz, Mainz, Germany), M. Maggiora(University of Turin and INFN, Turin, Italy), Q. A. Malik(University of the Punjab, Lahore, Pakistan), H. Mao(Institute of High Energy Physics, Beijing, P. R. China), Y. J. Mao(Peking University, Beijing, P. R. China), Z. P. Mao(Institute of High Energy Physics, Beijing, P. R. China), J. G. Messchendorp(KVI/University of Groningen, Groningen, The Netherlands), J. Min(Institute of High Energy Physics, Beijing, P. R. China), T. J. Min(Institute of High Energy Physics, Beijing, P. R. China), R. E. Mitchell(Indiana University, Bloomington, Indiana, USA), X. H. Mo(Institute of High Energy Physics, Beijing, P. R. China), C. Morales Morales(Helmholtz Institute Mainz, Mainz, Germany), C. Motzko(Bochum Ruhr-University, Bochum, Germany), N. Yu. Muchnoi(G.I. Budker Institute of Nuclear Physics SB RAS), Y. Nefedov(Joint Institute for Nuclear Research, Dubna, Russia), C. Nicholson(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), I. B. Nikolaev(G.I. Budker Institute of Nuclear Physics SB RAS), Z. Ning(Institute of High Energy Physics, Beijing, P. R. China), S. L. Olsen(Seoul National University, Seoul, Korea), Q. Ouyang(Institute of High Energy Physics, Beijing, P. R. China), S. P. Pacetti(18, d), J. W. Park(Seoul National University, Seoul, Korea), M. Pelizaeus(University of Hawaii, Honolulu, Hawaii, USA), K. Peters(GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt, Germany), J. L. Ping(Nanjing Normal University, Nanjing, P. R. China), R. G. Ping(Institute of High Energy Physics, Beijing, P. R. China), R. Poling(University of Minnesota, Minneapolis, MN, USA), E. Prencipe(Johannes Gutenberg University of Mainz, Mainz, Germany), C. S. J. Pun(The University of Hong Kong, Pokfulam, Hong Kong), M. Qi(Nanjing University, Nanjing, P. R. China), S. Qian(Institute of High Energy Physics, Beijing, P. R. China), C. F. Qiao(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), X. S. Qin(Institute of High Energy Physics, Beijing, P. R. China), Y. Qin(Peking University, Beijing, P. R. China), Z. H. Qin(Institute of High Energy Physics, Beijing, P. R. China), J. F. Qiu(Institute of High Energy Physics, Beijing, P. R. China), K. H. Rashid(University of the Punjab, Lahore, Pakistan), G. Rong(Institute of High Energy Physics, Beijing, P. R. China), X. D. Ruan(GuangXi University, Nanning, P.R.China), A. Sarantsev(20, e), J. Schulze(Bochum Ruhr-University, Bochum, Germany), M. Shao(University of Science and Technology of China, Hefei, P. R. China), C. P. Shen(38, f), X. Y. Shen(Institute of High Energy Physics, Beijing, P. R. China), H. Y. Sheng(Institute of High Energy Physics, Beijing, P. R. China), M. R. Shepherd(Indiana University, Bloomington, Indiana, USA), X. Y. Song(Institute of High Energy Physics, Beijing, P. R. China), S. Spataro(University of Turin and INFN, Turin, Italy), B. Spruck(Universitaet Giessen, Giessen, Germany), D. H. Sun(Institute of High Energy Physics, Beijing, P. R. China), G. X. Sun(Institute of High Energy Physics, Beijing, P. R. China), J. F. Sun(Henan Normal University, Xinxiang, P. R. China), S. S. Sun(Institute of High Energy Physics, Beijing, P. R. China), X. D. Sun(Institute of High Energy Physics, Beijing, P. R. China), Y. J. Sun(University of Science and Technology of China, Hefei, P. R. China), Y. Z. Sun(Institute of High Energy Physics, Beijing, P. R. China), Z. J. Sun(Institute of High Energy Physics, Beijing, P. R. China), Z. T. Sun(University of Science and Technology of China, Hefei, P. R. China), C. J. Tang(Sichuan University, Chengdu, P. R. China), X. Tang(Institute of High Energy Physics, Beijing, P. R. China), E. H. Thorndike(University of Rochester, Rochester, New York, USA), H. L. Tian(Institute of High Energy Physics, Beijing, P. R. China), D. Toth(University of Minnesota, Minneapolis, MN, USA), M. U. Ulrich(Universitaet Giessen, Giessen, Germany), G. S. Varner(University of Hawaii, Honolulu, Hawaii, USA), B. Wang(GuangXi University, Nanning, P.R.China), B. Q. Wang(Peking University, Beijing, P. R. China), K. Wang(Institute of High Energy Physics, Beijing, P. R. China), L. L. Wang(China Center of Advanced Science and Technology, Beijing, P. R. China), L. S. Wang(Institute of High Energy Physics, Beijing, P. R. China), M. Wang(Shandong University, Jinan, P. R. China), P. Wang(Institute of High Energy Physics, Beijing, P. R. China), P. L. Wang(Institute of High Energy Physics, Beijing, P. R. China), Q. Wang(Peking University, Beijing, P. R. China), Q. J. Wang(Institute of High Energy Physics, Beijing, P. R. China), S. G. Wang(Peking University, Beijing, P. R. China), X. F. Wang(Henan Normal University, Xinxiang, P. R. China), X. L. Wang(University of Science and Technology of China, Hefei, P. R. China), Y. D. Wang(University of Science and Technology of China, Hefei, P. R. China), Y. F. Wang(Institute of High Energy Physics, Beijing, P. R. China), Y. Q. Wang(Shandong University, Jinan, P. R. China), Z. Wang(Institute of High Energy Physics, Beijing, P. R. China), Z. G. Wang(Institute of High Energy Physics, Beijing, P. R. China), Z. Y. Wang(Institute of High Energy Physics, Beijing, P. R. China), D. H. Wei(Guangxi Normal University, Guilin, P. R. China), P. Weidenkaff(Johannes Gutenberg University of Mainz, Mainz, Germany), Q. G. Wen(University of Science and Technology of China, Hefei, P. R. China), S. P. Wen(Institute of High Energy Physics, Beijing, P. R. China), M. W. Werner(Universitaet Giessen, Giessen, Germany), U. Wiedner(Bochum Ruhr-University, Bochum, Germany), L. H. Wu(Institute of High Energy Physics, Beijing, P. R. China), N. Wu(Institute of High Energy Physics, Beijing, P. R. China), S. X. Wu(University of Science and Technology of China, Hefei, P. R. China), W. Wu(Nankai University, Tianjin, P. R. China), Z. Wu(Institute of High Energy Physics, Beijing, P. R. China), L. G. Xia(Tsinghua University, Beijing, P. R. China), Z. J. Xiao(Nanjing Normal University, Nanjing, P. R. China), Y. G. Xie(Institute of High Energy Physics, Beijing, P. R. China), Q. L. Xiu(Institute of High Energy Physics, Beijing, P. R. China), G. F. Xu(Institute of High Energy Physics, Beijing, P. R. China), G. M. Xu(Peking University, Beijing, P. R. China), H. Xu(Institute of High Energy Physics, Beijing, P. R. China), Q. J. Xu(Hangzhou Normal University, Hangzhou, P. R. China), X. P. Xu(Soochow University, Suzhou, China), Y. Xu(Nankai University, Tianjin, P. R. China), Z. R. Xu(University of Science and Technology of China, Hefei, P. R. China), F. Xue(Huazhong Normal University, Wuhan, P. R. China), Z. Xue(Institute of High Energy Physics, Beijing, P. R. China), L. Yan(University of Science and Technology of China, Hefei, P. R. China), W. B. Yan(University of Science and Technology of China, Hefei, P. R. China), Y. H. Yan(Hunan University, Changsha, P. R. China), H. X. Yang(Institute of High Energy Physics, Beijing, P. R. China), T. Yang(GuangXi University, Nanning, P.R.China), Y. Yang(Huazhong Normal University, Wuhan, P. R. China), Y. X. Yang(Guangxi Normal University, Guilin, P. R. China), H. Ye(Institute of High Energy Physics, Beijing, P. R. China), M. Ye(Institute of High Energy Physics, Beijing, P. R. China), M. H. Ye(China Center of Advanced Science and Technology, Beijing, P. R. China), B. X. Yu(Institute of High Energy Physics, Beijing, P. R. China), C. X. Yu(Nankai University, Tianjin, P. R. China), J. S. Yu(Lanzhou University, Lanzhou, P. R. China), S. P. Yu(Shandong University, Jinan, P. R. China), C. Z. Yuan(Institute of High Energy Physics, Beijing, P. R. China), W. L. Yuan(Nanjing Normal University, Nanjing, P. R. China), Y. Yuan(Institute of High Energy Physics, Beijing, P. R. China), A. A. Zafar(University of the Punjab, Lahore, Pakistan), A. Z. Zallo(INFN Laboratori Nazionali di Frascati, Frascati, Italy), Y. Zeng(Hunan University, Changsha, P. R. China), B. X. Zhang(Institute of High Energy Physics, Beijing, P. R. China), B. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), C. C. Zhang(Institute of High Energy Physics, Beijing, P. R. China), D. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), H. H. Zhang(Sun Yat-Sen University, Guangzhou, P. R. China), H. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Zhang(Nanjing Normal University, Nanjing, P. R. China), J. G. Zhang(Henan Normal University, Xinxiang, P. R. China), J. Q. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. W. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), J. Z. Zhang(Institute of High Energy Physics, Beijing, P. R. China), L. Zhang(Nanjing University, Nanjing, P. R. China), S. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), T. R. Zhang(Nanjing Normal University, Nanjing, P. R. China), X. J. Zhang(Institute of High Energy Physics, Beijing, P. R. China), X. Y. Zhang(Shandong University, Jinan, P. R. China), Y. Zhang(Institute of High Energy Physics, Beijing, P. R. China), Y. H. Zhang(Institute of High Energy Physics, Beijing, P. R. China), Y. S. Zhang(GuangXi University, Nanning, P.R.China), Z. P. Zhang(University of Science and Technology of China, Hefei, P. R. China), Z. Y. Zhang(Wuhan University, Wuhan, P. R. China), G. Zhao(Institute of High Energy Physics, Beijing, P. R. China), H. S. Zhao(Institute of High Energy Physics, Beijing, P. R. China), J. W. Zhao(Institute of High Energy Physics, Beijing, P. R. China), K. X. Zhao(Nanjing Normal University, Nanjing, P. R. China), Lei Zhao(University of Science and Technology of China, Hefei, P. R. China), Ling Zhao(Institute of High Energy Physics, Beijing, P. R. China), M. G. Zhao(Nankai University, Tianjin, P. R. China), Q. Zhao(Institute of High Energy Physics, Beijing, P. R. China), S. J. Zhao(Zhengzhou University, Zhengzhou, P. R. China), T. C. Zhao(Institute of High Energy Physics, Beijing, P. R. China), X. H. Zhao(Nanjing University, Nanjing, P. R. China), Y. B. Zhao(Institute of High Energy Physics, Beijing, P. R. China), Z. G. Zhao(University of Science and Technology of China, Hefei, P. R. China), A. Zhemchugov(20, a), B. Zheng(University of South China, Hengyang, P. R. China), J. P. Zheng(Institute of High Energy Physics, Beijing, P. R. China), Y. H. Zheng(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), Z. P. Zheng(Institute of High Energy Physics, Beijing, P. R. China), B. Zhong(Institute of High Energy Physics, Beijing, P. R. China), J. Zhong(Bochum Ruhr-University, Bochum, Germany), L. Zhou(Institute of High Energy Physics, Beijing, P. R. China), X. K. Zhou(Graduate University of Chinese Academy of Sciences, Beijing, P. R. China), X. R. Zhou(University of Science and Technology of China, Hefei, P. R. China), C. Zhu(Institute of High Energy Physics, Beijing, P. R. China), K. Zhu(Institute of High Energy Physics, Beijing, P. R. China), K. J. Zhu(Institute of High Energy Physics, Beijing, P. R. China), S. H. Zhu(Institute of High Energy Physics, Beijing, P. R. China), X. L. Zhu(Tsinghua University, Beijing, P. R. China), X. W. Zhu(Institute of High Energy Physics, Beijing, P. R. China), Y. M. Zhu(Nankai University, Tianjin, P. R. China), Y. S. Zhu(Institute of High Energy Physics, Beijing, P. R. China), Z. A. Zhu(Institute of High Energy Physics, Beijing, P. R. China), J. Zhuang(Institute of High Energy Physics, Beijing, P. R. China), B. S. Zou(Institute of High Energy Physics, Beijing, P. R. China), J. H. Zou(Institute of High Energy Physics, Beijing, P. R. China), and J. X. Zuo(Institute of High Energy Physics, Beijing, P. R. China)

Subjects
hep-ex, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Based on a data sample of 106 M $\psi^{\prime}$ events collected with the BESIII detector, the decays $\psi^{\prime}\ar\gamma\chi_{c0, 2}$,$\chi_{c0, 2}\ar\gamma\gamma$ are studied to determine the two-photon widths of the $\chi_{c0, 2}$ states. The two-photon decay branching fractions are determined to be ${\cal B}(\chi_{c0}\ar\gamma\gamma) = (2.24\pm 0.19\pm 0.12\pm 0.08)\times 10^{-4}$ and ${\cal B}(\chi_{c2}\ar\gamma\gamma) = (3.21\pm 0.18\pm 0.17\pm 0.13)\times 10^{-4}$. From these, the two-photon widths are determined to be $\Gamma_{\gamma \gamma}(\chi_{c0}) = (2.33\pm0.20\pm0.13\pm0.17)$ keV, $\Gamma_{\gamma \gamma}(\chi_{c2}) = (0.63\pm0.04\pm0.04\pm0.04)$ keV, and $\cal R$ $=\Gamma_{\gamma \gamma}(\chi_{c2})/\Gamma_{\gamma \gamma}(\chi_{c0})=0.271\pm 0.029\pm 0.013\pm 0.027$, where the uncertainties are statistical, systematic, and those from the PDG ${\cal B}(\psi^{\prime}\ar\gamma\chi_{c0,2})$ and $\Gamma(\chi_{c0,2})$ errors, respectively. The ratio of the two-photon widths for helicity $\lambda=0$ and helicity $\lambda=2$ components in the decay $\chi_{c2}\ar\gamma\gamma$ is measured for the first time to be $f_{0/2} =\Gamma^{\lambda=0}_{\gamma\gamma}(\chi_{c2})/\Gamma^{\lambda=2}_{\gamma\gamma}(\chi_{c2}) = 0.00\pm0.02\pm0.02$.

Published
2015

49. Observation of a Neutral Charmoniumlike StateZc(4025)0ine+e−→(D*D¯*)0π0

Author

F. C. Ma, Zhiqing Liu, T. Johansson, J. F. Chang, J. F. Qiu, L. Fava, F. Nerling, X. Cai, H. Liang, X. Q. Hao, X. K. Chu, L. Zotti, Guangshun Huang, Q. P. Ji, C. Hu, S. L. Niu, X. Q. Li, P. L. Wang, Peilian Liu, Lingxuan Zhang, Y. J. Mo, Z. G. Wang, S. Qian, Jialun Ping, Z. Ning, Chi Zhang, M. Greco, X. Tang, P. Larin, Z. T. Sun, Z. A. Liu, V. Prasad, Y. Ban, P. Weidenkaff, S. P. Wen, X. S. Qin, X. R. Zhou, Cheng Li, I. B. Nikolaev, J. H. Yin, H. Y. Zhang, H. H. Zhang, X. L. Luo, K. Zhang, X. Y. Zhang, G. F. Chen, M. Shao, Y. T. Gu, G. A. Chelkov, M. Bertani, Huan Ren, H. B. Li, H. S. Chen, T. Weber, A. G. Denig, C. L. Luo, M. Lara, J. B. Liu, Yaquan Fang, A. Q. Guo, J. Y. Zhang, K. Y. Liu, M. H. Gu, A. Yuncu, H. Y. Sheng, R. Baldini Ferroli, E. Fioravanti, C. X. Yu, W. P. Wang, Z. B. Li, E. H. Thorndike, Z. Haddadi, B. Zheng, R. G. Ping, Shan Wang, Y. J. Sun, Q. J. Xu, L. Yang, Y. P. Lu, F. Bianchi, L. Q. Qin, Xiao-Rui Lyu, Xiangdong Ruan, K. J. Zhu, C. C. Zhang, B. Zhong, L. B. Guo, I. Tapan, W. M. Song, K. Schoenning, Orhan Cakir, M. Maggiora, Ling Zhao, C. Leng, P. Kiese, Q. Liu, Y. K. Heng, G. S. Varner, X. L. Kang, A. Sarantsev, D. H. Wei, B. S. Zou, J. S. Lange, J. M. Bian, X. N. Li, H. Muramatsu, Ulrich Wiedner, K. Moriya, Y. H. Yan, Y. H. Guan, I. Uman, J. W. Zhao, Yang Qin, Lei Zhao, Z. Y. He, Z. L. Hou, Yang Yang, S. L. Olsen, R. A. Briere, Q. W. Zhao, Zhenyu Zhang, S. J. Zhao, D. Y. Wang, F. Feldbauer, Krisztian Peters, Haiping Peng, Liqing Xu, S. H. Zhang, F. A. Harris, L. L. Ma, M. Kornicer, Y. L. Han, X. S. Jiang, E. E. Eren, W. C. Yan, Zhiqiang Liu, Y. C. Zhu, T. Ma, Yu Zhang, Y. X. Xia, M. H. Ye, L. G. Xia, A. Amoroso, Yunlong Zhang, X. Liu, K. Li, Z. H. Qin, J. C. Chen, Kai Liu, J. H. Liu, X. Y. Shen, V. Santoro, Ke Wang, L. P. Zhou, X. C. Chen, X. L. Ji, Xuanhong Lou, L. L. Jiang, D. Bettoni, W. Gradl, Nasser Kalantar-Nayestanaki, A. Dbeyssi, M. Ripka, Z. J. Xiao, W. G. Li, Z. P. Mao, C. Z. Yuan, J. L. Zhang, R. Poling, H. P. Cheng, J. Fang, Tao Li, L. D. Liu, X. K. Zhou, Fang Liu, C. Morales Morales, L. Y. Dong, A. Calcaterra, Z. G. Zhao, J. Q. Zhang, X. M. Li, M. Qi, H. J. Yang, I. Denysenko, Jianping Zheng, E. Boger, M. Ullrich, Y. G. Xie, Z. Gao, S. Spataro, G. R. Liao, Li Zhou, Ch. Rosner, P. F. Duan, Serkant Ali Cetin, J. F. Hu, Fenfen An, A. Julin, Y. N. Pu, S. Zhu, W. J. Zheng, B. L. Wang, Y. Nefedov, Jin Li, Y. B. Zhao, S. X. Du, Y. F. Wang, X. P. Xu, J. B. Jiao, T. Held, T. C. Zhao, Z. J. Sun, H. Loehner, Jie Zhao, D. X. Lin, H. J. Lu, J. G. Lu, F. De Mori, C. Geng, Alexey Zhemchugov, H. M. Hu, T. Hussain, Y. Ding, B. J. Liu, X. Y. Zhou, W. Shan, J. Dong, Tao Luo, X. Y. Ma, M. G. Zhao, W. X. Gong, F. E. Maas, B. Y. Zhang, M. Lv, Lei Li, H. M. Liu, J. C. Li, J. W. Zhang, T. Hu, Y. N. Zhang, Cui Li, Q. L. Xiu, B. X. Yu, Y. Q. Wang, J. F. Sun, X. F. Wang, J. Zhuang, M. X. Luo, S. B. Liu, Q. M. Ma, C. H. Li, O. B. Kolcu, Jian Wei, Yucheng Huang, S. Nisar, C. J. Tang, B. Kloss, X. Y. Niu, X. H. Mo, L. S. Wang, Guangming Huang, Y. Hu, D. V. Dedovich, P. X. Shen, W. Kühn, Y. Yuan, Y. S. Zhu, J. J. Zhang, G. F. Cao, J. Min, H. L. Dai, Igor Boyko, S. Marcello, Y. Zeng, M. Destefanis, Z. Wu, Y. H. Zheng, Cong-Feng Qiao, L. W. Jiang, Bibo Ke, D. J. Ambrose, O. Albayrak, L. L. Wang, H. Cai, B. Wang, B. Kopf, Zhiqing Zhang, W. B. Yan, D. Xiao, M. N. Achasov, Z. A. Zhu, N. Yu. Muchnoi, X. Y. Jiang, Giulietto Felici, K. L. He, S. Pacetti, P. R. Li, X. S. Kang, Heng-Yun Ye, Y. H. Zhang, Magnus Wolke, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, M. Z. Wang, Y. F. Liang, Jimin Zhao, C. Dong, S. Sosio, M. Y. Dong, D. P. Jin, Z. Y. Wang, G. X. Sun, J. V. Bennett, H. B. Liu, Li Yan, J. H. Zou, M. Albrecht, Z. Jiao, Fu-Hu Liu, D. H. Zhang, C. P. Shen, Joachim Pettersson, S. S. Sun, R. Q. Lu, Y. P. Guo, Z. P. Zhang, W. D. Li, R. E. Mitchell, Dayong Wang, N. Qin, D. W. Bennett, Zujian Wang, Q. Ouyang, H. X. Yang, I. Garzia, S. S. Fang, Y. B. Liu, Andrzej Kupsc, W. L. Yuan, M. L. Chen, Huihui Liu, J. P. Liu, J. G. Messchendorp, J. P. Dai, Qiunan Xu, K. Goetzen, Y. X. Yang, Z. H. Wang, G. F. Xu, S. Jin, Y. Guo, X. Y. Song, C. F. Redmer, Xiaocong Ai, A. Hafner, Q. Zhao, J. S. Huang, X. T. Huang, C. X. Liu, G. Rong, H. P. Huang, Y. Z. Sun, A. A. Zafar, Xiang Zhou, K. H. Rashid, Gang Zhao, H. W. Yu, S. J. Chen, S. Han, H. L. Ma, D. M. Li, L. H. Wu, M. Savrie, M. Pelizaeus, X. Y. Gao, Y. J. Mao, J. Y. Liu, Q. Gao, Y. N. Gao, Y. Zhang, Q. An, J. Z. Fan, X. Fang, Feng Liu, M. Ablikim, X. N. Ma, Y. T. Liang, A. Zallo, G. Li, C. D. Fu, M. Fritsch, C. Q. Feng, X. R. Chen, Z. Y. Deng, M. Kavatsyuk, Xingguo Li, B. X. Zhang, J. Z. Bai, S. Schumann, Yao Wang, X. B. Ji, M. Tiemens, P. Patteri, Xiao-Hai Liu, R. Kliemt, Jie Yu, T. J. Min, G. Cibinetto, and F. Li

Subjects
Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, Mass spectrometry, 01 natural sciences, Atomic mass, Recoil, 0103 physical sciences, Mass spectrum, Pi, Atomic physics, Born approximation, 010306 general physics, Bar (unit)
Abstract

We report a study of the process e(+)e(-) -> (D*(D) over bar*)(0)pi(0) using e(+)e(-) collision data samples with integrated luminosities of 1092 pb(-1) at root s = 4.23 GeV and 826 pb(-1) at root s = 4.26 GeV collected with the BESIII detector at the BEPCII storage ring. We observe a new neutral structure near the (D*(D) over bar*)(0) mass threshold in the pi(0) recoil mass spectrum, which we denote as Z(c)(4025)(0). Assuming a Breit-Wigner line shape, its pole mass and pole width are determined to be (4025.5(-4.7)(+2.0) +/- 3.1) MeV/c(2) and (23.0 +/- 6.0 +/- 1.0) MeV, respectively. The Born cross sections of e(+)e(-) -> Z(c)(4025)(0)pi(0) -> (D*(D) over bar*)(0)pi(0) are measured to be (61.6 +/- 8.2 +/- 9.0) pb at root s = 4.23 GeV and (43.4 +/- 8.0 +/- 5.4) pb at root s = 4.26 GeV. The first uncertainties are statistical and the second are systematic.

Published
2015

50. Study of dynamics ofD0→K−e+νeandD0→π−e+νedecays

Author

J. B. Jiao, Y. H. Guan, M. Qi, Kai Liu, H. J. Yang, Y. F. Wang, X. L. Ji, D. J. Ambrose, S. Schumann, Y. Nefedov, F. Li, C. Leng, W. G. Li, X. Y. Ma, Xiaocong Ai, W. X. Gong, Z. J. Xiao, Talib Hussain, Serkant Ali Cetin, Yao Wang, S. Qian, Jialun Ping, K. Zhang, X. Y. Zhang, X. Liu, F. C. Ma, M. Lara, J. B. Liu, Y. J. Sun, Y. P. Lu, M. Maggiora, Ling Zhao, P. Larin, L. Zotti, C. Hu, X. Tang, X. M. Li, S. Spataro, X. P. Xu, M. Albrecht, Lei Zhao, Z. L. Hou, Yang Yang, D. Y. Wang, J. Q. Zhang, S. B. Liu, Lei Li, W. D. Li, J. F. Sun, L. L. Jiang, H. L. Ma, H. B. Li, J. F. Qiu, G. Li, H. M. Liu, L. Fava, S. L. Niu, Y. B. Zhao, Q. L. Xiu, C. Z. Yuan, O. B. Kolcu, F. Nerling, X. Fang, J. Min, F. Y. Li, X. Q. Li, M. Greco, K. J. Zhu, D. M. Li, Sai-Juan Chen, S. X. Du, Cui Li, K. Moriya, W. Shan, J. Dong, Y. Q. Wang, C. D. Fu, C. Q. Feng, X. R. Chen, Z. Y. Deng, Feng Liu, M. Pelizaeus, S. Nisar, C. J. Tang, Z. T. Sun, B. Kopf, S. Marcello, Y. Hu, G. F. Cao, K. L. He, K. Y. Liu, A. G. Denig, Z. B. Li, C. L. Luo, Y. Zeng, Y. X. Yang, H. J. Lu, J. G. Lu, Xiangdong Ruan, Z. A. Liu, C. C. Zhang, B. Zhong, L. B. Guo, Xingguo Li, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Q. Ouyang, F. A. Harris, Tord Johansson, Guangshun Huang, M. Z. Wang, Orhan Cakir, Yunlong Zhang, M. H. Ye, S. S. Fang, V. Prasad, I. Tapan, P. L. Wang, P. Kiese, B. Wang, Shan Wang, Xiao-Rui Lyu, Q. Liu, D. Bettoni, D. Xiao, Y. H. Yan, S. L. Olsen, Jimin Zhao, K. Goetzen, R. A. Briere, W. Kuehn, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, A. Hafner, F. E. Maas, Y. Ban, T. Hu, P. Weidenkaff, X. Y. Jiang, J. W. Zhao, Q. Zhao, Y. B. Liu, Y. Z. Sun, J. L. Zhang, N. Yu. Muchnoi, R. Poling, R. Kliemt, S. P. Wen, X. N. Ma, Zhiqing Liu, Y. T. Liang, Xiang Zhou, M. Bertani, P. R. Li, X. S. Kang, H. Muramatsu, Y. C. Zhu, Ulrich Wiedner, A. Q. Guo, W. M. Song, A. Zallo, G. S. Varner, X. S. Jiang, H. H. Zhang, G. A. Chelkov, Z. Haddadi, L. Yang, J. F. Chang, Jianping Zheng, S. Zhu, X. S. Qin, X. R. Zhou, L. D. Liu, Cheng Li, L. Y. Dong, Jie Yu, Y. H. Zhang, M. Fritsch, X. L. Luo, T. Ma, H. Xiao, E. Boger, Gang Zhao, Y. J. Mao, T. Held, M. Kavatsyuk, Y. Gao, Guangming Huang, P. X. Shen, J. Y. Liu, G. X. Sun, J. V. Bennett, Li Yan, Krisztian Peters, J. C. Li, J. J. Zhang, Z. Wu, W. P. Wang, M. Destefanis, F. Bianchi, L. L. Ma, W. Gradl, M. Ripka, L. W. Jiang, X. Cai, Z. H. Qin, Z. Y. Wang, W. J. Zheng, Z. Jiao, Fu-Hu Liu, B. X. Zhang, D. H. Zhang, M. H. Gu, A. Yuncu, H. Y. Sheng, J. Zhuang, X. Q. Hao, Zhiqing Zhang, M. X. Luo, Q. Gao, C. Dong, Jian Wei, S. Sosio, Y. Zhang, Yucheng Huang, Chuan Liu, Y. P. Guo, H. X. Yang, I. Garzia, D. V. Dedovich, E. H. Thorndike, Z. P. Zhang, Q. An, Z. Ning, Yuehong Xie, G. R. Liao, J. F. Hu, G. Cibinetto, J. Z. Fan, C. X. Yu, D. W. Bennett, Zujian Wang, Joachim Pettersson, L. G. Xia, A. Amoroso, L. Q. Qin, G. F. Xu, F. Feldbauer, Huihui Liu, J. P. Liu, B. Zheng, R. G. Ping, S. Jin, J. Z. Bai, J. G. Messchendorp, J. P. Dai, A. Calcaterra, Z. G. Zhao, X. C. Chen, Chi Zhang, Brent J. Liu, X. K. Chu, Y. Guo, A. Dbeyssi, Z. J. Sun, H. Loehner, X. Y. Song, M. Kornicer, X. B. Ji, Peilian Liu, A. Julin, F. De Mori, X. Y. Zhou, X. F. Wang, P. Patteri, Q. M. Ma, B. Kloss, X. Y. Niu, Y. Yuan, Y. S. Zhu, LiLi Zhang, J. S. Huang, X. H. Mo, L. S. Wang, N. Kalantar-Nayestanaki, C. X. Liu, L. L. Wang, H. Cai, I. B. Nikolaev, Y. J. Mo, H. S. Chen, T. Weber, J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, Q. P. Ji, Liqing Xu, X. Y. Shen, V. Santoro, Y. Ding, E. Fioravanti, Z. A. Zhu, X. L. Kang, A. Sarantsev, D. H. Wei, J. S. Lange, Q. W. Zhao, C. P. Shen, Jin Li, M. G. Zhao, Andrzej Kupsc, W. L. Yuan, Y. N. Zhang, Y. X. Xia, S. H. Zhu, Z. G. Wang, M. L. Chen, H. Y. Zhang, G. F. Chen, J. Y. Zhang, Jie Zhao, D. X. Lin, Y. K. Heng, Alexey Zhemchugov, H. M. Hu, J. M. Bian, Zhenyu Zhang, S. J. Zhao, E. E. Eren, J. C. Chen, Xuanhong Lou, J. W. Zhang, C. Morales Morales, I. Uman, M. Ullrich, Z. H. Wang, Yaquan Fang, C. F. Redmer, K. Schoenning, B. S. Zou, W. C. Yan, X. Q. He, X. T. Huang, M. Ablikim, Yu Zhang, A. A. Zafar, G. Rong, L. P. Zhou, Z. P. Mao, H. P. Cheng, J. Fang, Tao Li, Z. Gao, S. Han, Ch. Rosner, H. Liang, L. H. Wu, M. Savrie, Magnus Wolke, Y. F. Liang, X. Y. Gao, D. P. Jin, Dayong Wang, N. Qin, M. Y. Dong, M. Tiemens, H. B. Liu, J. H. Zou, S. S. Sun, J. H. Liu, Ke Wang, R. E. Mitchell, Bibo Ke, W. B. Yan, P. F. Duan, Fenfen An, M. N. Achasov, Giulietto Felici, S. Pacetti, T. C. Zhao, R. Baldini Ferroli, Ke Li, Q. J. Xu, X. K. Zhou, Fang Liu, X. N. Li, I. Denysenko, Haiping Peng, Tao Luo, B. Y. Zhang, B. X. Yu, H. L. Dai, and Igor Boyko

Subjects
Semileptonic decay, Physics, Nuclear and High Energy Physics, QCD sum rules, Particle physics, 010308 nuclear & particles physics, Cabibbo–Kobayashi–Maskawa matrix, Electron–positron annihilation, Hadron, Analytical chemistry, Lattice QCD, 01 natural sciences, Light cone, 0103 physical sciences, Sum rule in quantum mechanics, 010306 general physics
Abstract

In an analysis of a 2.92 fb(-1) data sample taken at 3.773 GeV with the BESIII detector operated at the BEPCII collider, we measure the absolute decay branching fractions B(D-0 -> K(-)e(+)nu(e)) = (3.505 +/- 0.014 +/- 0.033)% and B(D-0 -> pi(-)e(+)nu(e)) = (0.295 +/- 0.004 +/- 0.003)%. From a study of the differential decay rates we obtain the products of hadronic form factor and the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element f(+)(K)(0)vertical bar V-cs vertical bar = 0.7172 +/- 0.0025 +/- 0.0035 and f(+)(pi)(0)vertical bar V-cd vertical bar = 0.1435 +/- 0.0018 +/- 0.0009. Combining these products with the values of vertical bar V-cs(d)vertical bar from the SM constraint fit, we extract the hadronic form factors f(+)(K)(0) = 0.7368 +/- 0.0026 +/- 0.0036 and f(+)(pi)(0) = 0.6372 +/- 0.0080 +/- 0.0044, and their ratio f(+)(pi)(0)/f(+)(K)(0) = 0.8649 +/- 0.0112 +/- 0.0073. These form factors and their ratio are used to test unquenched lattice QCD calculations of the form factors and a light cone sum rule (LCSR) calculation of their ratio. The measured value of f(+)(K(pi))(0)vertical bar V-cs(d)vertical bar and the lattice QCD value for f(+)(K(pi))(0) are used to extract values of the CKM matrix elements of vertical bar V-cs vertical bar = 0.9601 +/- 0.0033 +/- 0.0047 +/- 0.0239 and vertical bar V-cd vertical bar = 0.2155 +/- 0.0027 +/- 0.0014 +/- 0.0094, where the third errors are due to the uncertainties in lattice QCD calculations of the form factors. Using the LCSR value for f(+)(pi)(0)/f(+)(K)(0), we determine the ratio vertical bar V-cd vertical bar/vertical bar V-cs vertical bar = 0.238 +/- 0.004 +/- 0.002 +/- 0.011, where the third error is from the uncertainty in the LCSR normalization. In addition, we measure form factor parameters for three different theoretical models that describe the weak hadronic charged currents for these two semileptonic decays. All of these measurements are the most precise to date.

Published
2015

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