Author: "X. H. Zhao" / Journal: physical review letters - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"X. H. Zhao"' showing total 19 results

Start Over Author "X. H. Zhao" Journal physical review letters

19 results on '"X. H. Zhao"'

1. Observation ofη′→π+π−π+π−andη′→π+π−π0π0

Author: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, 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, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, J. Z. Fan, J. Fang, S. S. Fang, Y. Fang, L. Fava, C. Q. Feng, C. D. Fu, O. Fuks, Q. Gao, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, L. Huang, X. T. Huang, Y. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, L. W. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. Li, D. M. Li, F. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, D. X. Lin, B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, H. L. Lu, J. G. Lu, X. R. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, N. Q., M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, X. D. Ruan, A. Sarantsev, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, M. Werner, U. Wiedner, M. Wolke, L. H. Wu, N. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. Xue, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. B. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, and J. H. Zou
Subjects: Physics, Crystallography, Chiral perturbation theory, General Physics and Astronomy
Abstract: Using a sample of $1.3\ifmmode\times\else\texttimes\fi{}{10}^{9}\text{ }\text{ }J/\ensuremath{\psi}$ events collected with the BESIII detector, we report the first observation of ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$. The measured branching fractions are $\mathcal{B}({\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})=[8.53\ifmmode\pm\else\textpm\fi{}0.69(\text{stat.})\ifmmode\pm\else\textpm\fi{}0.64(\text{syst.})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and $\mathcal{B}({\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0})=[1.82\ifmmode\pm\else\textpm\fi{}0.35(\text{stat.})\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0ex}{0ex}}0.18(\text{syst.})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.
Published: 2014

2. Observation of a Charged(DD¯)±Mass Peak ine+e−→πDD¯ats=4.26 GeV

Author: J. F. Sun, Y. X. Yang, Xiangdong Ruan, Q. Liu, X. C. Lou, L. G. Xia, M. R. Shepherd, Q. Zhao, Y. Z. Sun, B. Kopf, N. Li, K. L. He, J. B. Jiao, Y. Zeng, Zhe Sun, Q. A. Malik, W. C. Yan, Zhiqiang Liu, Miao He, S. Braun, Jifeng Hu, L. P. Zhou, Z. P. Mao, Y. L. Han, Gang Zhao, M. Z. Wang, Xuejun Wang, Q. M. Ma, B. Kloss, Y. Yuan, Y. S. Zhu, I. Tapan, Y. H. Yan, J. W. Zhao, Y. Z. Yang, Guangshun Huang, J. L. Zhang, H. P. Cheng, J. Fang, P. Larin, D. Cronin-Hennessy, H. H. Zhang, B. Spruck, E. H. Thorndike, L. Q. Qin, J. P. Dai, Kai Liu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, S. L. Olsen, R. A. Briere, S. Schumann, J. Z. Bai, X. S. Jiang, M. Maggiora, M. Bertani, Ling Zhao, Ke Wang, Yao Wang, Y. C. Zhu, Lei Zhao, Z. Y. He, Z. L. Hou, Yang Yang, Y. Nefedov, V. V. Bytev, D. Y. Wang, S. L. Zang, Fenfen An, T. Held, C. Geng, D. Li, T. C. Zhao, Zhenghao Zhang, C. Z. Yuan, Y. P. Chu, J. C. Li, Xiao-Tong Lu, O. Cakir, G. R. Liao, H. L. Ma, H. J. Lu, J. G. Lu, J. Zhuang, W. L. Yuan, X. B. Ji, F. F. Jing, L. Fava, X. K. Chu, F. E. Maas, T. Hu, Q. P. Ji, D. M. Li, H. Muramatsu, W. Gradl, Y. F. Wang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, M. Pelizaeus, M. Ripka, S. H. Zhang, X. Y. Shen, C. Moralesmorales, Y. J. Mao, A. Zallo, Yang Qin, Y. F. Liang, R. Baldini Ferroli, Q. J. Xu, Q. Ouyang, Y. Ding, Michael Werner, Feng Liu, M. Ablikim, P. Friedel, D. P. Jin, Y. X. Xia, B. J. Liu, Guangming Huang, X. N. Li, Z. Wu, Haiping Peng, S. S. Fang, Hai Yu, Y. N. Gao, Y. Zhang, Q. An, T. Hussain, G. R. Lu, X. Y. Ma, X. K. Zhou, M. G. Zhao, H. Moeini, W. X. Gong, Wei Wu, A. Zhemchugov, Y. B. Liu, C. S. Ji, H. Liang, I. B. Nikolaev, Z. A. Zhu, X. Liu, Dayong Wang, Qun-Yao Wang, P. L. Liu, H. B. Li, A. G. Denig, C. L. Luo, Z. J. Xiao, C. C. Zhang, B. Zhong, L. B. Guo, Lei Li, Y. P. Guo, J. M. Bian, Ulrich Wiedner, Y. T. Liang, W. Lai, Z. Ning, M. Kornicer, T. Ma, Y. H. Zheng, LiLi Zhang, Tao Luo, J. V. Bennett, T. Guo, X. L. Ji, S. P. Yu, G. A. Chelkov, Cong-Feng Qiao, O. Albayrak, N. Yu. Muchnoi, Heng-Yun Ye, B. X. Yu, C. H. Li, A. Calcaterra, Z. G. Zhao, Y. H. Zhang, Z. B. Li, Serkant Ali Cetin, Q. G. Wen, Z. Y. Wang, Q. L. Xiu, L. Huang, M. Kavatsyuk, Z. Y. Zhang, Z. J. Sun, H. S. Chen, H. Loehner, Shujun Zhao, R. Poling, Jianping Zheng, H. L. Dai, Igor Boyko, C. B. Zhang, D. X. Lin, S. Qian, Jialun Ping, A. Q. Guo, H. M. Hu, X. Q. Li, J. C. Chen, O. Fuks, X. Y. Zhang, M. Lv, Y. G. Xie, M. Greco, J. W. Zhang, Nasser Kalantar-Nayestanaki, B. X. Zhang, Z. Xue, M. Lara, W. M. Song, J. Q. Zhang, S. X. Du, Y. J. Sun, E. Boger, M. Destefanis, M. H. Gu, H. Y. Sheng, B. S. Zou, L. L. Jiang, C. X. Yu, M. Leyhe, Z. H. Qin, Shan Wang, K. Y. Liu, B. Zheng, R. G. Ping, Chuan Liu, Y. B. Zhao, P. L. Wang, G. Li, W. G. Li, X. L. Luo, Z. A. Liu, X. L. Wang, W. Shan, G. S. Varner, Y. H. Guan, S. Spataro, M. L. Chen, Y. Ban, P. Weidenkaff, C. Hu, C. D. Fu, X. Tang, Y. Q. Wang, C. Q. Feng, S. P. Wen, H. M. Liu, S. Nisar, C. J. Tang, X. S. Qin, X. R. Zhou, J. L. Fu, M. Qi, Cheng Li, M. Shao, Y. T. Gu, Y. P. Lu, Z. Y. Deng, I. Uman, Q. J. Li, G. F. Cao, Xingguo Li, A. Sarantsev, D. H. Wei, M. Ullrich, K. J. Zhu, J. S. Lange, Xuantong Zhang, S. B. Liu, K. Moriya, Z. G. Wang, H. Y. Zhang, H. X. Yang, X. H. Mo, L. S. Wang, M. H. Ye, G. F. Chen, L. L. Wang, H. Cai, J. Y. Zhang, Jie Yu, C. P. Shen, L. Y. Dong, Y. K. Heng, Z. P. Zhang, T. J. Min, W. M. Ding, J. W. Park, Zujian Wang, X. H. Zhao, S. Ma, D. Toth, P. R. Li, F. Li, F. C. Ma, G. X. Sun, Li Yan, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Sanfeng Wu, K. Li, Fang Liu, I. Denysenko, J. S. Huang, J. F. Qiu, L. H. Wu, C. X. Liu, Xinye Xu, B. Y. Zhang, Zhiqing Liu, J. F. Chang, X. Cai, X. R. Li, M. Y. Dong, H. B. Liu, Z. H. Wang, J. H. Zou, C. F. Redmer, S. S. Sun, X. T. Huang, Jürgen Becker, R. E. Mitchell, G. Rong, W. B. Yan, M. N. Achasov, S. Pacetti, N. Wu, Krisztian Peters, B. Q. Wang, Chi Zhang, G. F. Xu, D. J. Ambrose, S. Jin, X. R. Chen, E. Prencipe, W. D. Li, Cui Li, A. A. Zafar, K. H. Rashid, X. Y. Song, S. J. Chen, O. Bondarenko, Huihui Liu, J. P. Liu, J. G. Messchendorp, F. A. Harris, Qiunan Xu, K. Goetzen, W. Kuehn, and J. Min
Subjects: Nuclear physics, Physics, Annihilation, Branching fraction, Electron–positron annihilation, Pi, Mass spectrum, Center (category theory), Analytical chemistry, General Physics and Astronomy, High Energy Physics::Experiment, Invariant mass, Bar (unit)
Abstract: We report on a study of the process e(+)e(-) -> pi(+/-) (D (D) over bar*)(-/+) at root s = 4.26 GeV using a 525 pb(-1) data sample collected with the BESIII detector at the BEPCII storage ring. A distinct charged structure is observed in the (D (D) over bar*)(-/+) invariant mass distribution. When fitted to a mass- dependent- width Breit- Wigner line shape, the pole mass and width are determined to be M-pole (3883: 9 +/- 1.5 (stat) +/- 4.2 dsyst__ MeV= c(2) and Gamma(pole) = (24: 8 +/- 3.3 (stat) +/- 11: 0 (syst)) MeV. The mass and width of the structure, which we refer to as Z(c)(3885), are 2 sigma and 1 sigma, respectively, below those of the Z(c)(3900) -> pi(+/-) J/psi peak observed by BESIII and Belle in pi(+)pi(-) J/psi final states produced at the same center- of- mass energy. The angular distribution of the pi Z(c)(3885) system favors a J(P) = J(P) = 1(+) quantum number assignment for the structure and disfavors 1(-) or 0(-). The Born cross section times the (D (D) over bar*) branching fraction of the Z(c)(3885) is measured to be sigma(e(+)e(-) -> pi(+/-)Z(c)(3885)(-/+)) x B(Z(c)(3885)-/+ -> (D (D) over bar*)(-/+) = (83.5 +/- 6.6 (stat) +/- 22.0 (syst)) pb. Assuming the Z(c)(3885) -> (D (D) over bar*)(-/+) signal reported here and the Z(c)(3900) -> pi J/psi signal are from the same source, the partial width ratio (Gamma(Z(c)(3885) -> D (D) over bar*)/Gamma(Z(c)(3900) -> pi J/psi)) = 6.2 +/- 1.1 (stat) +/- 2.7 (syst) is determined.
Published: 2014

3. Observation of a Charged Charmoniumlike StructureZc(4020)and Search for theZc(3900)ine+e−→π+π−hc

Author: F. Li, F. C. Ma, I. Uman, X. Q. Li, M. Greco, S. Schumann, M. Qi, J. F. Qiu, Zhiqing Liu, M. Ullrich, Z. H. Wang, J. F. Chang, K. Y. Liu, C. F. Redmer, Y. Ding, P. Larin, J. F. Sun, X. T. Huang, B. J. Liu, X. L. Ji, S. P. Yu, G. A. Chelkov, M. Ablikim, A. A. Zafar, G. Rong, H. J. Lu, C. Hu, X. Tang, J. G. Lu, X. Cai, X. R. Li, Y. Zeng, Zhe Sun, Talib Hussain, G. R. Lu, Y. F. Wang, W. G. Li, S. Spataro, X. P. Xu, L. Fava, F. E. Maas, H. M. Liu, G. F. Cao, S. B. Liu, Z. G. Zhao, Q. M. Ma, T. Hu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Z. A. Zhu, X. Y. Ma, Y. F. Liang, K. J. Zhu, Xuantong Zhang, D. P. Jin, B. Kloss, H. Moeini, W. X. Gong, Y. Yuan, Y. S. Zhu, Y. Z. Yang, L. Huang, Y. G. Xie, Michael Werner, K. Moriya, L. L. Jiang, I. Tapan, Y. H. Yan, M. Bertani, Z. P. Zhang, L. H. Wu, Xiangdong Ruan, Dayong Wang, P. L. Liu, X. H. Mo, L. S. Wang, Q. Liu, Lei Zhao, Y. H. Zheng, Cong-Feng Qiao, S. X. Du, Guangming Huang, Y. T. Liang, C. P. Shen, O. Albayrak, M. H. Ye, Q. A. Malik, K. Goetzen, Z. J. Sun, H. Loehner, J. W. Zhao, D. Cronin-Hennessy, Y. C. Zhu, W. Kuehn, J. M. Bian, Zhenyu Zhang, Zujian Wang, Y.N. Gao, C. H. Li, W. Lai, P. L. Wang, Meng Wang, C. B. Zhang, D. X. Lin, Kai Liu, X. L. Wang, H. H. Zhang, X. C. Lou, J. B. Jiao, L. G. Xia, A. Calcaterra, Z. Wu, N. Yu. Muchnoi, Z. B. Li, H. M. Hu, L. L. Wang, H. Cai, Heng-Yun Ye, F. A. Harris, Jie Yu, Y. H. Zhang, S. L. Olsen, M. H. Gu, Y. H. Guan, X. H. Zhao, W. Gradl, M. L. Chen, K. H. Rashid, R. A. Briere, M. Kornicer, M. Shao, Y. T. Gu, M. Kavatsyuk, Y. Nefedov, Shan Wang, Q. G. Wen, H. Y. Sheng, M. Maggiora, Ling Zhao, Z. Ning, M. Ripka, T. Held, Xiao-Tong Lu, Y. B. Zhao, Chi Zhang, W. Shan, X. S. Jiang, J. W. Zhang, Q. J. Li, J. C. Chen, J. C. Li, J. Min, C. X. Yu, T. J. Min, Z. Y. Wang, D. Li, B. X. Zhang, Z. Y. He, Z. L. Hou, Yang Yang, Y. L. Han, B. Spruck, E. H. Thorndike, D. Y. Wang, X. K. Zhou, D. J. Ambrose, Y. Q. Wang, S. Nisar, B. Zheng, R. G. Ping, B. Kopf, G. S. Varner, A. Sarantsev, D. H. Wei, J. S. Lange, J. Zhuang, A. Zallo, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, X. K. Chu, Y. D. Wang, H. L. Ma, L. Q. Qin, D. M. Li, C. J. Tang, Jianping Zheng, Y. P. Lu, Xuejun Wang, H. Muramatsu, X. R. Chen, N. Li, E. Prencipe, Nasser Kalantar-Nayestanaki, O. Cakir, C. Morales Morales, Yang Qin, Y. X. Xia, K. L. He, Feng Liu, Q. P. Ji, L. Y. Dong, C. Z. Yuan, J. P. Dai, M. Lv, Z. Xue, W. D. Li, S. J. Chen, O. Bondarenko, N. Wu, G. Li, Krisztian Peters, G. F. Xu, X. Liu, Qun-Yao Wang, LiLi Zhang, M. Pelizaeus, S. H. Zhang, X. Y. Shen, Y. X. Yang, Zhenli Xu, H. B. Li, M. Destefanis, A. G. Denig, C. L. Luo, S. Jin, W. M. Ding, C. Geng, Q. L. Xiu, C. D. Fu, P. R. Li, Cui Li, C. Q. Feng, Z. J. Xiao, Y. P. Guo, Z. A. Liu, J. Q. Zhang, C. C. Zhang, B. Zhong, L. B. Guo, Lei Li, Y. Ban, P. Weidenkaff, Z. Y. Deng, B. Q. Wang, T. Guo, G. X. Sun, Li Yan, Serkant Ali Cetin, M. R. Shepherd, S. P. Wen, X. S. Qin, X. R. Zhou, Ulrich Wiedner, J. L. Fu, Q. Zhao, Xingguo Li, Cheng Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. Z. Sun, X. L. Luo, T. Ma, X. Y. Song, J. Z. Bai, S. Qian, Jialun Ping, S. Ma, X. Y. Zhang, D. Toth, M. G. Zhao, S. L. Zang, M. Lara, Y. J. Sun, E. Boger, Y. P. Chu, X. B. Ji, Sanfeng Wu, Xiang Zhou, J. S. Huang, C. X. Liu, Gang Zhao, Y. J. Mao, Z. G. Wang, H. Y. Zhang, P. Friedel, Y. Zhang, Q. An, Wei Wu, A. Zhemchugov, G. F. Chen, G. R. Liao, W. L. Yuan, J. Y. Zhang, F. F. Jing, Q. Ouyang, Y. K. Heng, S. S. Fang, Y. B. Liu, O. Fuks, R. Baldini Ferroli, Q. J. Xu, X. N. Li, Haiping Peng, Hai Yu, Tao Luo, M. Y. Dong, J. V. Bennett, B. S. Zou, B. X. Yu, H. S. Chen, Shujun Zhao, H. L. Dai, Igor Boyko, H. B. Liu, Ke Wang, J. H. Zou, W. C. Yan, Zhiqiang Liu, Miao He, S. Braun, R. Poling, V. V. Bytev, S. S. Sun, Fenfen An, T. C. Zhao, Zhenghao Zhang, Jifeng Hu, L. P. Zhou, Jürgen Becker, Z. P. Mao, H. P. Cheng, R. E. Mitchell, A. Q. Guo, W. M. Song, M. Leyhe, Z. H. Qin, J. Fang, Chuan Liu, K. Li, H. X. Yang, Huihui Liu, J. P. Liu, Fang Liu, J. W. Park, J. G. Messchendorp, G. S. Huang, Qiunan Xu, I. Denysenko, C. S. Ji, B. Y. Zhang, H. Liang, I. B. Nikolaev, W. B. Yan, M. N. Achasov, and S. Pacetti
Subjects: Physics, Positron, Electron–positron annihilation, Pi, Mass spectrum, Analytical chemistry, General Physics and Astronomy, Invariant mass, State (functional analysis), Electron, Atomic physics, Bar (unit)
Abstract: We study e(+)e(-) -> pi(+) pi(-)h(c) at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies and are found to be of the same order of magnitude as those of e(+)e(-) -> pi(+) pi(-) J/Psi but with a different line shape. In the pi(+/-)h(c) mass spectrum, a distinct structure, referred to as Z(c)(4020) is observed at 4. 02 GeV/c(2). The Z(c)(4020) carries an electric charge and couples to charmonium. A fit to the pi(+/-)h(c) invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9 +/- 0.8 +/- 2.7) MeV/c(2) and a width of (7.9 +/- 2.7 +/- 2.6) MeV for the Z(c)(4020), where the first errors are statistical and the second systematic. The difference between the parameters of this structure and the Z(c) (4025) observed in the D*(D) over bar* final state is within 1.5 sigma, but whether they are the same state needs further investigation. No significant Z(c)(3900) signal is observed, and upper limits on the Z(c)(3900) production cross sections in pi +/- h(c) at center-of-mass energies of 4.23 and 4.26 GeVare set.
Published: 2013

4. Observation of a Charged Charmoniumlike Structure ine+e−→π+π−J/ψats=4.26 GeV

Author: N. Wu, Krisztian Peters, M. Y. Dong, H. B. Liu, Z. A. Liu, J. H. Zou, S. S. Sun, Y. Ban, P. Weidenkaff, Xiao Dong Chen, B. Q. Wang, M. Qi, S. P. Wen, X. S. Qin, Jürgen Becker, X. R. Zhou, C. P. Shen, S. Spataro, C. S. Ji, H. Liang, J. L. Fu, Cheng Li, L. H. Wu, X. Liu, R. E. Mitchell, Q. P. Ji, Y. T. Liang, Z. J. Xiao, Y. P. Guo, Jie Yu, S. B. Liu, Y. L. Han, T. Guo, HongSheng Zhao, Jianping Zheng, M. Lv, Y.N. Gao, Z. Xue, M. Destefanis, Serkant Ali Cetin, J. M. Bian, Zhenyu Zhang, W. Lai, Z. B. Li, Y. B. Zhao, X. H. Mo, L. S. Wang, M. H. Ye, I. Tapan, S. L. Li, Y. H. Yan, H. X. Yang, P. L. Wang, Qi-Wen Lü, Y. H. Guan, M. H. Gu, J. W. Zhao, M. Maggiora, D. Cronin-Hennessy, L. L. Wang, H. Cai, M. Bertani, Chi Zhang, J. C. Chen, Xuanhong Lou, Nasser Kalantar-Nayestanaki, M. Kavatsyuk, Y. C. Zhu, Y. Q. Wang, H. Y. Sheng, C. X. Yu, S. Ma, D. Toth, Kai Liu, T. J. Min, K. J. Zhu, B. D. Schaefer, W. B. Yan, M. N. Achasov, C. Morales Morales, C. J. Tang, Y. P. Lu, S. Qian, Jialun Ping, Huihui Liu, L. Y. Dong, X. Y. Zhang, Zhiqiang Liu, Miao He, J. P. Liu, Ling Zhao, Z. G. Wang, H. Y. Zhang, S. Pacetti, Sanfeng Wu, T. Held, B. X. Zhang, Mario Greco, J. S. Huang, J. G. Messchendorp, B. Zheng, R. G. Ping, C. X. Liu, B. Spruck, M. Lara, E. H. Thorndike, Jifeng Hu, J. F. Sun, F. Li, F. C. Ma, W. Gradl, L. P. Zhou, Y. J. Sun, E. Boger, W. M. Ding, Y. Nefedov, G. F. Chen, G. S. Huang, Qiunan Xu, Y. Zeng, Zhe Sun, J. Min, Z. P. Mao, X. L. Ji, Y. F. Liang, J. Y. Zhang, K. Li, Fang Liu, L. Q. Qin, S. L. Olsen, S. P. Yu, K. Goetzen, I. B. Nikolaev, R. A. Briere, Y. D. Wang, Q. M. Ma, H. P. Cheng, A. Q. Guo, D. J. Ambrose, Z. Y. He, G. A. Chelkov, J. F. Qiu, K. H. Rashid, B. Kopf, D. P. Jin, J. Fang, I. Denysenko, G. Li, K. L. He, L. Fava, Zujian Wang, J. B. Jiao, Z. L. Hou, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, M. Shao, Y. T. Gu, Y. Ding, Q. J. Li, S. J. Chen, O. Bondarenko, Yang Yang, Talib Hussain, W. M. Song, Y. K. Heng, E. Prencipe, B. Y. Zhang, X. H. Zhao, C. D. Fu, X. S. Jiang, A. Sarantsev, Y. Yuan, Y. S. Zhu, Qun-Yao Wang, D. Y. Wang, D. H. Wei, J. S. Lange, X. Y. Shen, Dayong Wang, J. P. Dai, P. L. Liu, C. Q. Feng, B. J. Liu, W. D. Li, M. Leyhe, Z. H. Qin, L. L. Jiang, Joong-Won Park, LiLi Zhang, Xiangdong Ruan, Q. L. Xiu, Q. Liu, Lei Zhao, Chuan Liu, O. Fuks, Z. Y. Deng, C. L. Ma, W. G. Li, Feng Xue, Cui Li, G. R. Liao, Xuejun Wang, J. Q. Zhang, G. F. Xu, Shou-hua Zhu, W. Kühn, X. L. Wang, Xingguo Li, M. G. Zhao, X. P. Xu, Y. G. Xie, Y. J. Mo, F. F. Jing, S. Jin, C. Zhu, G. X. Sun, Li Yan, O. Cakir, Z. Jiao, Fu-Hu Liu, D. H. Zhang, L. G. Xia, H. J. Lu, J. G. Lu, H. M. Liu, Xiao-Tong Lu, Z. A. Zhu, J. Z. Bai, Y. F. Wang, G. M. Xu, Feng Liu, Q. Ouyang, B. S. Zou, S. X. Du, C. Z. Yuan, F. A. Harris, X. Y. Song, G. F. Cao, G. R. Lu, Xiaocong Ai, S. S. Fang, M. Kornicer, D. H. Sun, S. L. Zang, F. E. Maas, X. T. Huang, M. Ablikim, A. A. Zafar, Y. B. Liu, H. L. Ma, T. Hu, M. L. Chen, D. M. Li, Y. P. Chu, X. Y. Ma, H. Moeini, W. X. Gong, G. Rong, H. Muramatsu, X. B. Ji, C. Geng, Zhiqing Liu, X. L. Luo, M. Pelizaeus, Shan Wang, Michael Werner, Y. J. Mao, Guangming Huang, C. H. Li, H. S. Chen, Z. Wu, J. F. Chang, P. Friedel, Q. Gao, X. Q. Li, Y. Zhang, Q. An, G. S. Varner, Zhiqing Zhang, Wei Wu, A. Zhemchugov, Hang Liu, X. Cai, X. R. Li, S. H. Zhang, Y. X. Yang, H. H. Zhang, I. Uman, M. R. Shepherd, K. Y. Liu, K. X. Zhao, Z. Ning, C. Nicholson, Q. Zhao, Y. Z. Sun, X. K. Zhou, Xiang Zhou, Gang Zhao, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, Meng Wang, M. Ullrich, H. B. Li, N. Yu. Muchnoi, A. G. Denig, C. L. Luo, Heng-Yun Ye, Y. H. Zhang, C. C. Zhang, B. Zhong, L. B. Guo, Lei Li, Q. G. Wen, Ulrich Wiedner, T. Ma, Z. Y. Wang, Yanping Huang, J. C. Li, J. Zhuang, M. X. Luo, Jian Wei, Yucheng Huang, D. V. Dedovich, Zhenli Xu, X. T. Liao, R. Baldini Ferroli, A. Calcaterra, Z. G. Zhao, Q. J. Xu, D. X. Lin, L. Huang, H. M. Hu, Z. J. Sun, H. Loehner, X. N. Li, Haiping Peng, Hai Yu, Ke Wang, R. Poling, V. V. Bytev, Fenfen An, T. C. Zhao, Rui Zhang, Zhenghao Zhang, Tao Luo, J. V. Bennett, B. X. Yu, J. W. Zhang, Shujun Zhao, H. L. Dai, Igor Boyko, A. Zallo, Yang Qin, Y. X. Xia, P. Larin, Y. M. Zhu, Q. A. Malik, C. Hu, X. Tang, Xuantong Zhang, and K. Moriya
Subjects: Physics, Positron, Electron–positron annihilation, Analytical chemistry, Mass spectrum, General Physics and Astronomy, High Energy Physics::Experiment, Z(4430), Tetraquark, Atomic mass, X(3872), Zc(3900)
Abstract: We study the process e(+)e(-) -> pi(+)pi(-) J/psi at a center-of-mass energy of 4.260 GeV using a 525 pb(-1) data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9 +/- 1.9 +/- 3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c(2) in the pi(+/-) J/psi mass spectrum, which we refer to as the Z(c)(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the pi(+/-) J/psi invariant mass spectrum, neglecting interference, results in a mass of (3899.0 +/- 3.6 +/- 4.9) MeV/c(2) and a width of (46 +/- 10 +/- 20) MeV. Its production ratio is measured to be R = (sigma(e(+)e(-) -> pi(+/-) Z(c)(3900)(-/+) -> pi(+)pi(-) J/psi)/sigma(e(+)e(-) -> pi(+)pi(-) J/psi)) = (21.5 +/- 3.3 +/- 7.5)%. In all measurements the first errors are statistical and the second are systematic.
Published: 2013

5. Observation of Two NewN*Resonances in the Decayψ(3686)→pp¯π0

Author: S. J. Zhao, Zheng Wang, J. S. Lange, S. G. Wang, Jingwei Zhao, C. X. Yu, L. L. Wang, X. Y. Zhang, X. S. Jiang, H. B. Liu, B. S. Zou, J. F. Sun, Xingtao Huang, A. Denig, V. Bytev, Y. X. Yang, Y. Yuan, X. H. Mo, Q. J. Wang, J. P. Liu, Jianping Zheng, W. Gradl, M. L. Chen, J. L. Fu, H. Mao, Y. Qin, H. H. Zhang, Y. Z. Sun, T. C. Zhao, J. L. Ping, W. L. Yuan, P. Weidenkaff, S. H. Zhu, S. H. Zhang, Zhenyu Zhang, W. Lai, X. L. Ji, Zhiqiang Liu, Miao He, Q. An, P. L. Liu, M. Lv, J. G. Zhang, R. G. Ping, C. L. Ma, Daniel P Cronin-Hennessy, C. S. Ji, R. Poling, W. Kühn, P. Wang, T. Yang, S. X. Wu, I. Denysenko, E. Boger, S. Pacetti, B. X. Yu, Jianhao Zhang, Xiujuan Tang, Jie Yu, Guo-Ming Chen, Tao Hu, Lei Zhao, X. Q. Hao, Y. H. Yan, Wu Li, Jin Wang, Z. L. Hou, G. Rong, Xing Lu, J. Zhong, T. J. Min, Y. M. Zhu, X. R. Zhou, J. S. Huang, Z. J. Xiao, Z. H. An, B. Spruck, K. H. Rashid, L. Y. Dong, Niklaus Berger, E. Prencipe, S. P. Wen, Y. F. Liang, X. Liu, Z. H. Qin, M. Shao, Z. T. Sun, C. Morales Morales, R. E. Mitchell, Y. P. Guo, J. K. C. Leung, F. Feldbauer, X. S. Qin, Chang-Zheng Yuan, C. Nicholson, M. Y. Dong, X. L. Li, G. X. Sun, J. B. Jiao, Y. P. Chu, Junguang Lu, C. F. Qiao, Z. G. Zhao, M. R. Shepherd, Feng Xue, Cui Li, Y. T. Liang, J. Fang, B. Zheng, S. Spataro, M. Ullrich, M. Pelizaeus, X. D. Ruan, J. F. Chang, G. F. Cao, Y. J. Sun, D. H. Sun, Hua-Bin Li, M. Qi, Wei Li, X. L. Wang, J. K. Becker, Xu Zhang, Hao Liu, S. S. Sun, F. F. An, J. P. Dai, Y. H. Guan, X. H. Liu, J. C. Chen, Xie-Yan Song, J. Zhang, Ling Zhao, Guangyu Zhao, Hai Liang, Z. Y. He, Z. Xue, M. Kavatsyuk, Y. P. Lu, Kun Liu, Fang Liu, C. L. Luo, Lei Zhou, G. R. Liao, A. Zhemchugov, Yang Yang, Yulei Han, Li-Feng Wang, Y. K. Heng, D. Toth, Chunyan Zhu, Sai-Juan Chen, D. H. Zhang, Yang Gao, Shisong Fang, Yuehong Xie, Wei Wu, K. Peters, Kunlun He, Q. Ouyang, Q. J. Li, J. F. Hu, Z. P. Mao, G. M. Xu, Kai Liu, Z. A. Liu, G. S. Varner, M. Bertani, Z. Ning, H. Y. Zhang, Haiwen Liu, X. H. Zhao, B. Zhong, Yong’an Liu, S. P. Yu, Shaodan Ma, X. T. Liao, A. Zallo, L. G. Xia, Qingming Ma, Kai Zhu, R. A. Briere, Feng Liu, Chang Liu, Y. S. Zhu, J. F. Qiu, H. Xu, X. P. Xu, F. C. Ma, G. M. Huang, J. Min, Chun S. J. Pun, D. Dedovich, T. R. Zhang, M. H. Gu, O. Bondarenko, D. J. Ambrose, J. Z. Bai, Y. T. Gu, M. G. Zhao, Y. J. Mao, D. M. Li, Shouguang Jin, Qian Wang, Y. P. Huang, G. Li, Y. D. Wang, X. N. Li, X. F. Wang, Zhen Wang, M. Ye, Huihui Liu, C. Motzko, C. Geng, L. Fava, Tao Luo, Xian Lun Zhu, S. L. Olsen, Li Yan, Talib Hussain, J. G. Messchendorp, G. R. Lu, C. D. Fu, A. Calcaterra, Q. L. Xiu, Jiangchao Li, Yi-Fang Zhao, Fu-Hu Liu, L. Zhang, H. S. Chen, Zong-Ping Zheng, H. Loehner, Joong-Won Park, Y. H. Zheng, W. B. Yan, H. L. Dai, J. Zhuang, S. X. Du, L. L. Jiang, Jun-Yi Zhang, G. F. Xu, L. H. Wu, M. X. Luo, G. Chelkov, B. X. Zhang, I. B. Nikolaev, Xueyong Shen, Zujian Wang, Y. S. Zhang, Xiaobo Zhu, Zhi-Jun Sun, Zhihao Xu, Chuan Liu, J. Schulze, J. M. Bian, N. Yu. Muchnoi, F. F. Jing, Y. H. Zhang, Q. W. Lu, K. Li, B. Huang, N. Kalantar-Nayestanaki, Y. Ding, E. H. Thorndike, Q. G. Wen, S. Qian, M. Maggiora, Bingxin Zhang, M. N. Achasov, J. X. Zuo, H. Y. Sheng, M. Greco, S. B. Liu, U. Wiedner, Lei Li, L. K. Jia, Z. P. Zhang, YongJu Chen, T. Ma, Jianguo Zhang, M. H. Ye, Yun-Zhi Zhang, H. P. Cheng, Y. Q. Wang, Z. A. Zhu, M. Ablikim, A. A. Zafar, X. B. Ji, K. Goetzen, Q. Ji, W. M. Ding, N. Wu, Feng Li, D. P. Jin, Y. F. Wang, F. A. Harris, B. Wang, Z. Y. Deng, Michael Werner, X. Y. Ma, Hang Liu, Chunmei Zhang, Q. J. Xu, D. H. Wei, C. H. Li, X. Q. Li, H. M. Hu, Hailong Ma, L. B. Guo, Z. Wu, Y. B. Chen, J. Z. Zhang, Y. B. Liu, K. Y. Liu, H. L. Tian, C. J. Tang, K. X. Zhao, K. Wang, P. L. Wang, X. L. Luo, C. Q. Feng, X. K. Zhou, B. Q. Wang, Y. Ma, H. S. Zhao, C. P. Shen, T. Held, H. J. Lu, Cunming Liu, I. Boyko, Y. Xu, N. B. Li, Y. Zeng, Q Zhao, H. Ye, Brent J. Liu, M. Destefanis, W. X. Gong, Zhibing Li, Y. Ban, Q. A. Malik, Zhiqing Liu, F. E. Maas, Cheng Li, A. Sarantsev, Y. Nefedov, X. D. Sun, H. X. Yang, K. J. Zhu, M. Wang, X. R. Li, A. Q. Guo, Z. Jiao, S. L. Li, R. B. Ferroli, J. H. Zou, and X. Cai
Subjects: Baryon, Nuclear physics, Physics, Branching fraction, Electron–positron annihilation, Partial wave analysis, Analytical chemistry, General Physics and Astronomy, Resonance, Bar (unit)
Abstract: Based on 106 x 10(6)psi(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of psi(3686) -> p (p) over bar pi(0) is performed. The branching fraction of this channel has been determined to be B psi(3686) -> p (p) over bar pi(0) = (1.65 +/- 0.03 +/- 0.15) x 10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2(+) resonance with a mass of 2300(-30-0)(+40+109) MeV/c(2) and width of 340(-30-58)(+30+110) MeV/c(2), and one 5/2(-) resonance with a mass of 2570(-10-10)(+19+34) MeV/c(2) and width of 250(-24-21)(+14+69) MeV/c(.)(2) For the remaining 5 N* intermediate resonances [N(1440), N(1520), N(1535), N(1650) and N(1720)], the analysis yields mass and width values that are consistent with those from established resonances. DOI: 10.1103/PhysRevLett.110.022001
Published: 2013

6. First Observation of theM1Transitionψ(3686)→γηc(2S)

Author: C. Q. Feng, L. Zhang, Z. Jiao, Z. A. Zhu, B. Q. Wang, M. Bertani, Y. Ma, C. P. Shen, B. Zhong, J. Q. Zhang, Zhe Sun, X. S. Qin, C. Nicholson, Qingming Ma, Zhiqing Liu, Y. B. Chen, Feng Liu, Chang Liu, J. Z. Zhang, M. Ullrich, X. D. Ruan, H. H. Liu, T. R. Zhang, K. Wang, Kun Liu, Shisong Fang, F. F. An, Y. H. Guan, X. H. Liu, X. H. Mo, M. H. Gu, L. Yu, X. R. Li, Q. J. Wang, J. P. Liu, Y. P. Guo, J. K. C. Leung, G. Li, A. Q. Guo, Jianping Zheng, W. L. Yuan, Ling Zhao, H. Loehner, J. B. Jiao, M. Lv, J. G. Zhang, X. T. Liao, Y. P. Chu, Junguang Lu, C. F. Qiao, J. Z. Bai, Y. T. Gu, J. C. Chen, Lei Zhao, Z. Y. He, G. Chelkov, Yang Yang, C. L. Ma, H. Xu, F. C. Ma, I. Boyko, Y. Zeng, J. Zhuang, L. H. Wu, M. X. Luo, Y. H. Yan, Z. Ning, X. L. Wang, X. S. Jiang, J. S. Huang, C. Geng, A. Zhemchugov, R. A. Briere, D. H. Zhang, H. B. Liu, S. L. Li, R. B. Ferroli, C. S. Ji, T. Yang, L. Y. Dong, L. K. Jia, I. Denysenko, E. Boger, B. X. Zhang, Y. J. Mao, Niklaus Berger, S. Pacetti, Zhiqiang Liu, Miao He, Q. An, B. X. Yu, D. P. Jin, W. Kuehn, J. F. Hu, X. L. Li, S. X. Wu, B. S. Zou, T. J. Min, Xiujuan Tang, X. N. Li, Brent J. Liu, M. Destefanis, Feng Li, G. M. Xu, H. M. Hu, H. Mao, Haiping Peng, X. Cai, Y. T. Liang, Zhihao Xu, Chuan Liu, Zong-Ping Zheng, Z. H. Qin, J. H. Zou, Xie-Yan Song, W. X. Gong, G. M. Huang, D. J. Ambrose, Chang-Zheng Yuan, P. Weidenkaff, J. Zhang, M. Kavatsyuk, A. Sarantsev, Tao Luo, B. Wang, Z. Y. Deng, Daniel P Cronin-Hennessy, Xingtao Huang, A. Denig, Q. Ouyang, Sai-Juan Chen, K. Li, Michael Werner, E. H. Thorndike, Chun S. J. Pun, V. Bytev, Li Yan, H. L. Ma, C. Motzko, S. L. Olsen, Y. Qin, M. Shao, Xian Lun Zhu, C. D. Fu, N. Yu. Muchnoi, Y. Nefedov, D. H. Sun, Hang Liu, J. S. Lange, L. B. Guo, M. G. Zhao, T. C. Zhao, J. L. Ping, X. D. Sun, R. Poling, G. R. Lu, X. F. Wang, Huihui Liu, Fu-Hu Liu, Y. H. Zhang, Q. W. Lu, H. X. Yang, K. J. Zhu, Jingwei Zhao, A. Calcaterra, X. W. Zhu, O. Bondarenko, Yu-Bin Liu, H. H. Zhang, Jiangchao Li, Z. G. Zhao, Yuanbo Chen, Q. J. Xu, J. G. Messchendorp, S. B. Liu, Joong-Won Park, Q. G. Wen, Xuantong Zhang, C. X. Liu, L. Fava, Y. X. Yang, S. H. Zhang, H. L. Dai, Jie Yu, D. H. Wei, Yao Wang, Y. Yuan, Q. L. Xiu, E. Prencipe, Z. Y. Wang, M. Maggiora, Lei Li, G. X. Sun, W. G. Li, M. Wang, S. X. Du, Guo-Ming Chen, Z. L. Hou, Y. B. Liu, Z. P. Zhang, B. D. Schaefer, Y. Ban, S. G. Wang, J. Schulze, M. Y. Dong, X. L. Ji, S. P. Yu, S. P. Wen, Y. F. Liang, Y. Z. Sun, Q. A. Malik, S. H. Zhu, J. M. Bian, Z. H. An, B. Spruck, Z. Xue, T. Ma, Q. Ji, C. X. Yu, Y. Ding, Haosheng Chen, Talib Hussain, P. L. Wang, G. F. Xu, S. Qian, J. F. Sun, M. R. Shepherd, F. Feldbauer, Hai Liang, P. L. Liu, Feng Xue, Cui Li, Hua-Bin Li, M. Qi, J. K. Becker, Y. Xu, N. B. Li, Q. J. Li, Q Zhao, H. M. Liu, M. Pelizaeus, H. Ye, G. S. Varner, Y. Zhang, Yulei Han, Yuehong Xie, Xing Lu, Wei Wu, F. E. Maas, J. Zhong, H. P. Cheng, X. Q. Li, Kunlun He, Kai Liu, Yang Gao, Ka-Yuet Liu, N. Wu, Y. Q. Wang, Zhibing Li, M. Ablikim, C. L. Luo, A. A. Zafar, W. B. Yan, L. L. Jiang, X. L. Luo, Fang Liu, Lei Zhou, X. K. Zhou, Xueyong Shen, Zujian Wang, Y. S. Zhang, H. S. Zhao, Zhi-Jun Sun, X. P. Xu, T. Held, H. J. Lu, D. M. Li, B. Y. Zhang, Y. H. Zheng, I. B. Nikolaev, F. F. Jing, M. N. Achasov, J. X. Zuo, Z. G. Wang, H. Y. Zhang, Guangyu Zhao, R. E. Mitchell, J. Y. Zhang, J. P. Dai, J. Min, Chunyan Zhu, D. Dedovich, Shaodan Ma, Shouguang Jin, Yi-Fang Zhao, Y. P. Huang, W. Gradl, W. Lai, Y. K. Heng, J. W. Zhang, X. Q. Hao, Tao Hu, B. Huang, Zhiyong Zhang, L. S. Wang, N. Kalantar-Nayestanaki, M. H. Ye, K. H. Rashid, X. Liu, C. Morales Morales, H. Y. Sheng, S. Spataro, M. Greco, U. Wiedner, Y. P. Lu, G. R. Liao, D. Toth, S. J. Zhao, L. L. Wang, X. Y. Zhang, M. L. Chen, R. G. Ping, S. S. Sun, X. B. Ji, K. Goetzen, Z. P. Mao, X. H. Zhao, W. M. Ding, J. Fang, J. F. Chang, G. F. Cao, G. Rong, Z. A. Liu, Y. M. Zhu, X. R. Zhou, J. L. Fu, Cheng Li, Z. J. Xiao, B. Zheng, Y. J. Sun, Wei Li, Qun-Yao Wang, K. Peters, A. Zallo, L. G. Xia, Y. S. Zhu, J. F. Qiu, Z. Wu, H. L. Tian, C. J. Tang, K. X. Zhao, Y. F. Wang, F. A. Harris, X. Y. Ma, Chunmei Zhang, and C. H. Li
Subjects: Physics, Branching fraction, Electron–positron annihilation, Excited state, Analytical chemistry, General Physics and Astronomy
Abstract: Using a sample of 106×10(6) ψ(3686) events collected with the BESIII detector at the BEPCII storage ring, we have made the first measurement of the M1 transition between the radially excited charmonium S-wave spin-triplet and the radially excited S-wave spin-singlet states: ψ(3686)→γη(c)(2S). Analyses of the processes ψ(3686)→γη(c)(2S) with η(c)(2S)→K(S)(0)K(±)π(∓) and K(+)K(-)π(0) give an η(c)(2S) signal with a statistical significance of greater than 10 standard deviations under a wide range of assumptions about the signal and background properties. The data are used to obtain measurements of the η(c)(2S) mass (M(η(c)(2S))=3637.6±2.9(stat)±1.6(syst) MeV/c(2)), width (Γ(η(c)(2S))=16.9±6.4(stat)±4.8(syst) MeV), and the product branching-fraction (B(ψ(3686)→γη(c)(2S))×B(η(c)(2S)→KKπ)=(1.30±0.20(stat)±0.30(syst))×10(-5)). Combining our result with a BABAR measurement of B(η(c)(2S)→KKπ), we find the branching fraction of the M1 transition to be B(ψ(3686)→γη(c)(2S))=(6.8±1.1(stat)±4.5(syst))×10(-4).
Published: 2012

7. Observation of two new N* resonances in the decay ψ(3686)→ppπ0

Author: M, Ablikim, M N, Achasov, D J, Ambrose, F F, An, Q, An, Z H, An, J Z, Bai, Y, Ban, J, Becker, N, Berger, M, Bertani, J M, Bian, E, Boger, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, A, Calcaterra, G F, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, W M, Ding, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, J, Fang, S S, Fang, L, Fava, F, Feldbauer, C Q, Feng, R B, Ferroli, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, Y L, Han, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, T, Held, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, N, Kalantar-Nayestanaki, M, Kavatsyuk, W, Kühn, W, Lai, J S, Lange, J K C, Leung, C H, Li, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, K, Li, Lei, Li, N B, Li, Q J, Li, S L, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, H, Liu, H B, Liu, H H, Liu, H M, Liu, H W, Liu, J P, Liu, K Y, Liu, Kai, Liu, Kun, Liu, P L, Liu, S B, Liu, X, Liu, X H, Liu, Y, Liu, Y B, Liu, Z A, Liu, Zhiqiang, Liu, Zhiqing, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, M, Lv, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, S, Ma, T, Ma, X Y, Ma, Y, Ma, F E, Maas, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, T J, Min, R E, Mitchell, X H, Mo, C, Morales Morales, C, Motzko, N Yu, Muchnoi, Y, Nefedov, C, Nicholson, I B, Nikolaev, Z, Ning, S L, Olsen, Q, Ouyang, S, Pacetti, J W, Park, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, E, Prencipe, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, Y, Qin, Z H, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, E H, Thorndike, H L, Tian, D, Toth, M, Ullrich, G S, Varner, B, Wang, B Q, Wang, J X, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, Q J, Wang, S G, Wang, X F, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, P, Weidenkaff, Q G, Wen, S P, Wen, M, Werner, U, Wiedner, L H, Wu, N, Wu, S X, Wu, W, Wu, Z, Wu, L G, Xia, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, G M, Xu, H, Xu, Q J, Xu, X P, Xu, Y, Xu, Z R, Xu, F, Xue, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, T, Yang, Y, Yang, Y X, Yang, H, Ye, M, Ye, M H, Ye, B X, Yu, C X, Yu, J S, Yu, S P, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J G, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y S, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, J W, Zhao, K X, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y M, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, and J X, Zuo
Abstract: Based on 106×10(6)ψ(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of ψ(3686)→ppπ0 is performed. The branching fraction of this channel has been determined to be B(ψ(3686)→ppπ0)=(1.65±0.03±0.15)×10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2+ resonance with a mass of 2300(-30-0)(+40+109) MeV/c2 and width of 340(-30-58)(+30+110) MeV/c2, and one 5/2- resonance with a mass of 2570(-10-10)(+19+34) MeV/c2 and width of 250(-24-21)(+14+69) MeV/c2. For the remaining 5 N* intermediate resonances [N(1440), N(1520), N(1535), N(1650) and N(1720)], the analysis yields mass and width values that are consistent with those from established resonances.
Published: 2012

8. Measurements of the Mass and Width of theηcUsing the Decayψ(3686)→γηc

Author: P. L. Wang, X. L. Luo, HongSheng Zhao, Q. J. Wang, R. Poling, A. Calcaterra, C. S. Ji, X. L. Ji, Jianping Zheng, H. Liang, T. Yang, M. Lv, S. P. Yu, G. A. Chelkov, Z. Xue, Talib Hussain, Zong-Ping Zheng, M. Destefanis, Xiaobo Zhu, Xiangdong Ruan, J. Z. Bai, Meng Wang, N. Yu. Muchnoi, Qi-Wen Lü, Heng-Yun Ye, W. G. Li, S. X. Du, Y. H. Zhang, Kaihui Liu, Y. P. Guo, J. K. C. Leung, G. R. Liao, Z. A. Liu, D. Alberto, Q. A. Malik, K. J. Zhu, Xuantong Zhang, Q. G. Wen, M. H. Ye, Y. P. Chu, X. B. Ji, C. F. Qiao, F. F. Jing, Zhiqiang Liu, Miao He, Zhiyong Zhang, X. Liu, S. Spataro, X. P. Xu, C. Zhu, Z. Y. Wang, Ke Wang, M. Pelizaeus, Y. Ban, L. P. Zhou, W. L. Yuan, Q. Ouyang, Z. J. Xiao, X. Sun, J. M. Bian, E. H. Thorndike, L. Y. Dong, Z. P. Mao, Zhenyu Zhang, W. Lai, M. Y. Dong, Shan Wang, M. Bertani, Q. P. Ji, S. J. Zhao, H. P. Cheng, J. Fang, J. F. Hu, F. Li, F. C. Ma, X. H. Liu, Y. H. Guan, S. P. Wen, Y. B. Liu, X. S. Qin, V. V. Bytev, G. S. Varner, X. Q. Hao, Xiujuan Tang, G. F. Cao, S. Qian, Jialun Ping, Fenfen An, J. C. Chen, Hang Liu, S. H. Zhang, X. L. Li, N. B. Li, X. R. Zhou, J. L. Fu, J. P. Dai, Nasser Kalantar-Nayestanaki, M. Maggiora, M. L. Chen, Ling Zhao, T. C. Zhao, Cheng Li, C. L. Ma, I. B. Nikolaev, Y. Ding, J. F. Qiu, E. Boger, K. H. Rashid, H. X. Yang, M. Shao, Y. T. Gu, Shou-hua Zhu, Lei Zhao, Z. Y. He, Z. L. Hou, J. H. Zou, Tao Luo, G. R. Lu, J. S. Huang, T. J. Min, Chun S. J. Pun, Q. J. Li, J. B. Jiao, Yang Yang, J. Zhong, D. J. Ambrose, Z. H. An, Xian Lun Zhu, B. X. Yu, Y. Nefedov, Y. T. Liang, C. Geng, B. S. Zou, Q. L. Xiu, M. G. Zhao, Y. P. Lu, X. F. Wang, Huihui Liu, S. S. Sun, J. P. Liu, A. Sarantsev, D. H. Wei, Z. A. Zhu, J. S. Lange, Jiangchao Li, M. H. Gu, H. S. Chen, Z. G. Wang, H. Y. Sheng, J. G. Messchendorp, H. Y. Zhang, G. X. Sun, Li Yan, Huirun Chen, J. X. Zuo, Julian Schulze, Yi-Fang Zhao, D. H. Sun, Jürgen Becker, Xing Lu, Yong Liu, G. F. Chen, H. L. Dai, Igor Boyko, Joong-Won Park, J. F. Sun, Q. M. Ma, J. Y. Zhang, J. Min, G. M. Xu, Z. Jiao, Fu-Hu Liu, Z. B. Li, C. X. Yu, A. Q. Guo, R. E. Mitchell, X. T. Liao, H. Xu, C. Z. Yuan, J. Zhuang, Y. K. Heng, Y. Yuan, B. Huang, X. H. Mo, L. S. Wang, D. H. Zhang, H. M. Liu, G. Li, H. M. Hu, Sai-Juan Chen, Nicolas Berger, Q. J. Xu, W. B. Yan, B. Zheng, R. G. Ping, M. N. Achasov, J. W. Zhang, M. Qi, H. L. Tian, C. D. Fu, Zhihao Xu, C. Q. Feng, W. D. Li, Chuan Liu, L. L. Wang, Z. Y. Deng, X. N. Li, S. Pacetti, L. L. Jiang, A. Zallo, Y. J. Sun, Yang Gao, Y. S. Zhu, Cui Li, K. Li, S. B. Liu, Fang Liu, J. Zhang, M. Kavatsyuk, Q. Liu, Qun-Yao Wang, H. B. Liu, Xueyong Shen, H. Mao, B. Y. Zhang, Zujian Wang, Y. S. Zhang, Zhi-Jun Sun, Y. H. Zheng, D. Cronin-Hennessy, B. Spruck, X. H. Zhao, H. J. Lu, J. G. Lu, Yin Xu, H. L. Ma, D. M. Li, Yulei Han, C. J. Tang, Kunlun He, L. H. Wu, B. X. Zhang, G. F. Xu, T. Hu, S. Jin, B. Wang, Y. X. Yang, Feng Liu, Chang Liu, Guangming Huang, M. R. Shepherd, T. R. Zhang, Z. Wu, Xie-Yan Song, N. Wu, Q. Zhao, Krisztian Peters, Y. Z. Sun, Y. H. Yan, Z. G. Zhao, K. Goetzen, W. Kuehn, W. L. Ding, H. Loehner, L. Zhang, H. H. Liu, B. Q. Wang, Gang Zhao, Shisong Fang, H. H. Zhang, Y. J. Mao, C. P. Shen, Yao Wang, M. X. Luo, D. V. Dedovich, O. Bondarenko, Y. Zhang, J. Q. Zhang, Brent J. Liu, Q. An, Yuehong Xie, Wei Wu, A. Zhemchugov, H. B. Li, C. L. Luo, Yuanbo Chen, S. Ma, D. Toth, C. C. Zhang, B. Zhong, L. B. Guo, Y. Zeng, Zhe Sun, Lei Li, Ulrich Wiedner, T. Ma, Yanping Huang, Y. B. Chen, J. Z. Zhang, X. Q. Li, Y. Q. Wang, C. X. Liu, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, Z. Ning, S. L. Li, R. B. Ferroli, Xiao-Yang Zhang, X. K. Zhou, Zhiqing Liu, J. F. Chang, X. L. Wang, X. Cai, X. R. Li, I. Denysenko, Y. F. Wang, Jingwei Zhao, Y. F. Liang, D. P. Jin, X. Y. Ma, W. X. Gong, F. A. Harris, C. H. Li, S. L. Olsen, R. A. Briere, X. S. Jiang, L. K. Jia, M. Greco, and K. Y. Liu
Subjects: Physics, Meson, Detector, Radiative transfer, General Physics and Astronomy, Singlet state, State (functional analysis), Atomic physics, Measure (mathematics), Storage ring, Line (formation)
Abstract: The mass and width of the lowest-lying S-wave spin singlet charmonium state, the η(c), are measured using a data sample of 1.06×10(8) ψ(3686) decays collected with the BESIII detector at the BEPCII storage ring. We use a model that incorporates full interference between the signal reaction, ψ(3686)→γη(c), and a nonresonant radiative background to describe the line shape of the η(c) successfully. We measure the η(c) mass to be 2984.3±0.6±0.6 MeV/c(2) and the total width to be 32.0±1.2±1.0 MeV, where the first errors are statistical and the second are systematic.
Published: 2012

9. First Observation ofη(1405)Decays intof0(980)π0

Author: C. S. Ji, H. Liang, T. Yang, X. D. Ruan, M. Y. Dong, J. H. Zou, N. B. Li, M. Qi, H. L. Tian, S. S. Sun, Xiao-Tong Lu, J. M. Bian, Yin Xu, L. Y. Dong, L. H. Wu, Jürgen Becker, Z. Ning, X. L. Ji, S. P. Yu, G. A. Chelkov, J. B. Jiao, S. J. Zhao, W. Lai, R. E. Mitchell, Shan Wang, Talib Hussain, G. S. Varner, Hang Liu, Y. G. Xie, Y. F. Wang, H. L. Ma, M. H. Gu, S. X. Du, J. Zhong, Q. J. Xu, J. C. Chen, Q. L. Xiu, J. Z. Bai, H. Y. Sheng, D. M. Li, Y. H. Zheng, X. Wan, C. X. Yu, X. Y. Ma, W. X. Gong, Xiaobo Zhu, Cong-Feng Qiao, Zhiqiang Liu, Miao He, N. Yu. Muchnoi, Nasser Kalantar-Nayestanaki, B. Zheng, R. G. Ping, L. P. Zhou, Heng-Yun Ye, Y. H. Zhang, G. R. Liao, Q. G. Wen, C. H. Li, I. B. Nikolaev, K. H. Rashid, M. Bertani, Zhiqing Liu, Z. A. Liu, Z. P. Mao, H. J. Lu, M. Shao, Y. T. Gu, W. B. Yan, Y. X. Yang, Y. P. Chu, X. B. Ji, H. P. Cheng, J. Fang, S. B. Liu, Y. Nefedov, F. F. Jing, Z. Y. Wang, J. G. Lu, F. Li, M. N. Achasov, W. L. Yuan, B. Spruck, E. H. Thorndike, Y. Ban, J. F. Chang, S. Qian, Q. An, Jialun Ping, Q. Ouyang, Q. J. Li, Q. P. Ji, Y. T. Liang, S. P. Wen, X. H. Liu, S. S. Fang, X. Q. Li, X. Tang, Q. M. Ma, M. R. Shepherd, S. Pacetti, Y. B. Zhao, N. Wu, Krisztian Peters, Y. B. Liu, L. L. Wang, X. Y. Zhang, X. S. Qin, X. R. Zhou, J. P. Dai, A. Zallo, F. C. Ma, J. L. Fu, X. Cai, P. L. Wang, Z. H. An, M. G. Zhao, Y. Q. Wang, S. H. Zhang, M. Greco, X. Y. Shen, A. Sarantsev, Cheng Li, Shou-hua Zhu, M. Maggiora, Ling Zhao, C. L. Ma, X. R. Li, A. Zhemchugov, X. T. Huang, Q. Zhao, X. L. Luo, D. H. Wei, Y. Z. Sun, J. S. Lange, Lei Zhao, Z. Y. He, Z. L. Hou, Y. Yuan, Y. J. Sun, E. Boger, Y. S. Zhu, Y. Ding, A. A. Zafar, Z. G. Wang, H. Y. Zhang, K. Y. Liu, Z. B. Li, G. Rong, Yang Yang, Y. H. Guan, C. Geng, J. X. Zuo, G. F. Chen, J. F. Qiu, K. Li, T. Hu, G. R. Lu, J. Zhang, Fang Liu, J. Min, B. S. Zou, Z. A. Zhu, H. B. Liu, S. L. Olsen, R. A. Briere, J. Y. Zhang, X. S. Jiang, B. Huang, G. M. Xu, I. Denysenko, X. H. Mo, L. S. Wang, M. Kavatsyuk, C. J. Tang, D. H. Sun, Gang Zhao, T. J. Min, K. J. Zhu, L. K. Jia, Y. K. Heng, M. H. Ye, C. Z. Yuan, K. L. He, L. L. Jiang, Q. Liu, Qun-Yao Wang, Zhiyong Zhang, B. Wang, B. Y. Zhang, X. Liu, Xuantong Zhang, Y. P. Lu, M. Z. Wang, Y. P. Guo, S. J. Chen, B. X. Zhang, Q. A. Malik, F. A. Harris, Guangming Huang, G. Li, O. Bondarenko, Y. N. Gao, Y. Zhang, Z. Wu, C. D. Fu, C. Q. Feng, Z. P. Zheng, Wei Wu, Z. Y. Deng, Xingguo Li, B. Q. Wang, Y. L. Han, X. K. Zhou, HongSheng Zhao, Q. J. Wang, J. K. C. Leung, Jianping Zheng, M. Lv, Z. Xue, M. Destefanis, C. P. Shen, Feng Liu, Chang Liu, J. Q. Zhang, Z. P. Zhang, M. Ablikim, T. R. Zhang, S. L. Li, Y. H. Yan, H. M. Hu, Zujian Wang, D. Cronin-Hennessy, H. Mao, Nicolas Berger, J. W. Zhang, Y. S. Zhang, Yao Wang, X. Q. Hao, X. H. Zhao, Brent J. Liu, D. J. Ambrose, J. F. Sun, Y. Zeng, Zhe Sun, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, G. X. Sun, Li Yan, W. D. Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Cui Li, Jingwei Zhao, Y. F. Liang, D. P. Jin, H. B. Li, C. L. Luo, Y. J. Mao, Z. J. Xiao, H. X. Yang, H.S. Xu, Yuanbo Chen, Chun S. J. Pun, C. C. Zhang, B. Zhong, L. B. Guo, X. L. Wang, X. F. Wang, Huihui Liu, J. P. Liu, M. L. Chen, Lei Li, W. L. Ding Ding, J. G. Messchendorp, Ulrich Wiedner, A. Q. Guo, T. Ma, Yanping Huang, H. H. Liu, J. C. Li, J. Zhuang, M. X. Luo, D. V. Dedovich, Chuan Liu, W. G. Li, S. Spataro, X. P. Xu, C. Zhu, Zhenli Xu, K. Goetzen, W. Kuehn, H. M. Liu, J. F. Hu, G. F. Cao, A. Calcaterra, Z. G. Zhao, Tao Luo, H. H. Zhang, Z. J. Sun, B. X. Yu, H. Loehner, L. Zhang, S. Ma, D. Toth, H. S. Chen, J. S. Huang, Yong Liu, H. L. Dai, Igor Boyko, C. X. Liu, Ke Wang, G. F. Xu, M. Pelizaeus, S. Jin, X. Sun, R. Poling, V. V. Bytev, Julian Schulze, Joong-Won Park, X. Y. Song, Fenfen An, T. C. Zhao, Qi-Wen Lü, X. T. Liao, D. Alberto, R. Baldini Ferroli, and X. N. Li
Subjects: Nuclear physics, Physics, Particle physics, Meson, Isospin, Electron–positron annihilation, Mass spectrum, Pi, General Physics and Astronomy, High Energy Physics::Experiment
Abstract: The decays J/psi -> gamma pi(+)pi(-)pi(0) and J/psi ->gamma pi(0)pi(0)pi(0) are analyzed using a sample of 225 X 10(6) J/psi events collected with the BESIII detector. The decay of eta(1405) -> f(0)(980)pi(0) with a large isospin violation is observed for the first time. The width of the f(0)(980) observed in the dipion mass spectra is anomalously narrower than the world average. Decay rates for three-pion decays of the eta' are also measured precisely.
Published: 2012

10. Evidence for the direct two-photon transition from ψ(3686) to J/ψ

Author: M, Ablikim, M N, Achasov, D J, Ambrose, F F, An, Q, An, Z H, An, J Z, Bai, R B, Ferroli, Y, Ban, J, Becker, N, Berger, M B, Bertani, J M, Bian, E, Boger, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, A C, Calcaterra, G F, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, W M, Ding, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, J, Fang, S S, Fang, L, Fava, F, Feldbauer, C Q, Feng, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, Y L, Han, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, T, Held, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, N, Kalantar-Nayestanaki, M, Kavatsyuk, W, Kuehn, W, Lai, J S, Lange, J K C, Leung, C H, Li, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, K, Li, Lei, Li, N B, Li, Q J, Li, S L, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, H, Liu, H B, Liu, H H, Liu, H M, Liu, H W, Liu, J P, Liu, Kun, Liu, Kai, Liu, K Y, Liu, P L, Liu, S B, Liu, X, Liu, X H, Liu, Y B, Liu, Y, Liu, Z A, Liu, Zhiqiang, Liu, Zhiqing, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, M, Lv, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, S, Ma, T, Ma, X Y, Ma, Y, Ma, F E, Maas, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, T J, Min, R E, Mitchell, X H, Mo, C, Morales Morales, C, Motzko, N Yu, Muchnoi, Y, Nefedov, C, Nicholson, I B, Nikolaev, Z, Ning, S L, Olsen, Q, Ouyang, S P, Pacetti, J W, Park, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, E, Prencipe, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, Y, Qin, Z H, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, E H, Thorndike, H L, Tian, D, Toth, M U, Ulrich, G S, Varner, B, Wang, B Q, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, Q J, Wang, S G, Wang, X F, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, P, Weidenkaff, Q G, Wen, S P, Wen, M W, Werner, U, Wiedner, L H, Wu, N, Wu, S X, Wu, W, Wu, Z, Wu, L G, Xia, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, G M, Xu, H, Xu, Q J, Xu, X P, Xu, Y, Xu, Z R, Xu, F, Xue, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, T, Yang, Y, Yang, Y X, Yang, H, Ye, M, Ye, M H, Ye, B X, Yu, C X, Yu, J S, Yu, S P, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A Z, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J G, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y S, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, J W, Zhao, K X, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y M, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, and J X, Zuo
Subjects: Physics, Particle physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy
Abstract: The two-photon transition ψ(3686)→γγJ/ψ is studied in a sample of 1.06×10(8) ψ(3686) decays collected by the BESIII detector. The branching fraction is measured to be (3.1±0.6(stat)(-1.0)(+0.8)(syst))×10(-4) using J/ψ→e(+)e(-) and J/ψ→μ(+)μ(-) decays, and its upper limit is estimated to be 4.5×10(-4) at the 90% confidence level. This work represents the first measurement of a two-photon transition among charmonium states. The orientation of the ψ(3686) decay plane and the J/ψ polarization in this decay are also studied. In addition, the product branching fractions of sequential E1 transitions ψ(3686)→γχ(cJ) and χ(cJ)→γJ/ψ(J=0,1,2) are reported.
Published: 2012

11. Spin-Parity Analysis ofpp¯Mass Threshold Structure inJ/ψandψ(3686)Radiative Decays

Author: N. Wu, Krisztian Peters, M. Bertani, Z. P. Zheng, K. Goetzen, W. Kuehn, Shou-hua Zhu, B. Q. Wang, C. P. Shen, Feng Liu, Chang Liu, O. Bondarenko, Jingwei Zhao, T. R. Zhang, Yin Xu, L. H. Wu, J. K. C. Leung, L. Zhang, B. S. Zou, H. M. Hu, H. L. Ma, D. M. Li, F. Li, Shan Wang, H. Mao, Tao Luo, Nicolas Berger, Z. G. Wang, H. Y. Zhang, Y. F. Liang, D. P. Jin, Y. Q. Wang, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, J. W. Zhang, D. J. Ambrose, P. L. Wang, M. H. Gu, A. Q. Guo, Y. H. Guan, G. F. Xu, J. B. Jiao, J. X. Zuo, G. F. Chen, F. C. Ma, Yao Wang, S. Jin, Y. J. Mao, H. Y. Sheng, Brent J. Liu, M. Qi, J. Z. Bai, X. L. Luo, J. Zhong, X. Q. Hao, H. L. Tian, J. Y. Zhang, G. S. Varner, Y. H. Zheng, Xiaobo Zhu, Cong-Feng Qiao, B. X. Yu, Zujian Wang, Y. S. Zhang, C. X. Yu, X. Y. Song, S. Ma, Hang Liu, B. Huang, H. H. Liu, B. Spruck, B. Zheng, R. G. Ping, Z. Ning, W. D. Li, M. Maggiora, Ling Zhao, Y. T. Liang, Q. A. Malik, X. H. Mo, D. Toth, L. S. Wang, X. H. Zhao, X. K. Zhou, Y. Zhang, H. S. Chen, Q. P. Ji, X. Q. Li, M. Greco, Meng Wang, N. Yu. Muchnoi, Y. K. Heng, Q. An, Y. Nefedov, Z. A. Liu, M. H. Ye, Q. M. Ma, Zhihao Xu, Chuan Liu, Heng-Yun Ye, Yuehong Xie, J. F. Sun, S. H. Zhang, Lei Zhao, Z. Y. He, Z. L. Hou, Yang Yang, Z. B. Li, H. X. Yang, H.S. Xu, A. Zallo, X. Y. Shen, J. M. Bian, Zhenyu Zhang, W. Lai, Y. P. Chu, Y. H. Zhang, Y. Ban, J. S. Huang, Yang Gao, Chun S. J. Pun, X. B. Ji, Wei Wu, A. Zhemchugov, J. Zhang, Shujun Zhao, Yong Liu, M. Kavatsyuk, J. Q. Zhang, C. X. Liu, H. L. Dai, Igor Boyko, Y. Ding, J. C. Li, Shisong Fang, Q. G. Wen, Cui Li, S. P. Wen, Y. Zeng, Zhe Sun, Y. Yuan, Y. S. Zhu, G. M. Xu, C. Z. Yuan, X. S. Qin, X. F. Wang, Huihui Liu, X. R. Zhou, G. R. Lu, J. P. Liu, J. F. Qiu, J. L. Fu, Zhiqing Liu, Cheng Li, Zhiyong Zhang, J. G. Messchendorp, Z. Y. Wang, Z. A. Zhu, X. L. Ji, Xiangdong Ruan, G. X. Sun, Li Yan, S. P. Yu, J. F. Chang, Y. B. Chen, J. Zhuang, B. X. Zhang, G. A. Chelkov, Z. Jiao, Fu-Hu Liu, D. H. Zhang, J. C. Chen, Y. X. Yang, E. H. Thorndike, W. G. Li, Xiaofeng Zhu, J. Z. Zhang, X. Liu, L. Y. Dong, Talib Hussain, Y. B. Zhao, S. B. Liu, S. L. Li, D. H. Sun, Xing Lu, Y. H. Yan, H. J. Lu, J. G. Lu, S. Spataro, X. P. Xu, G. R. Liao, H. H. Zhang, Nasser Kalantar-Nayestanaki, HongSheng Zhao, M. X. Luo, X. H. Liu, Q. J. Wang, R. Poling, C. Zhu, Ke Wang, D. Cronin-Hennessy, F. F. Jing, X. Cai, X. R. Li, J. Min, Z. J. Xiao, H. M. Liu, G. Li, Yulei Han, Q. Liu, Qun-Yao Wang, Jianping Zheng, H. B. Liu, J. F. Hu, M. Pelizaeus, C. J. Tang, X. Sun, M. R. Shepherd, Y. P. Guo, J. P. Dai, G. F. Cao, D. V. Dedovich, C. L. Ma, W. L. Yuan, Q. Ouyang, Julian Schulze, K. L. He, Sai-Juan Chen, T. Hu, Q. Zhao, M. Lv, K. Y. Liu, Joong-Won Park, M. G. Zhao, L. L. Jiang, Y. Z. Sun, C. Geng, S. X. Du, Y. B. Liu, C. D. Fu, Y. P. Lu, B. Wang, V. V. Bytev, Z. Xue, Fenfen An, N. B. Li, M. Destefanis, C. Q. Feng, Guangming Huang, F. A. Harris, Z. Wu, Qi-Wen Lü, S. Qian, Jialun Ping, I. B. Nikolaev, D. Alberto, L. L. Wang, T. C. Zhao, X. Y. Zhang, Q. L. Xiu, Z. Y. Deng, K. H. Rashid, M. Shao, Y. T. Gu, Y. J. Sun, E. Boger, Gang Zhao, Xingguo Li, Q. J. Li, X. T. Liao, Zhiqiang Liu, Miao He, L. P. Zhou, Z. P. Mao, Z. H. An, R. Baldini Ferroli, H. P. Cheng, Z. G. Zhao, J. Fang, K. J. Zhu, Xuantong Zhang, Xiujuan Tang, A. Sarantsev, D. H. Wei, J. S. Lange, Y. F. Wang, A. Calcaterra, C. S. Ji, Q. J. Xu, H. Liang, T. Yang, X. L. Wang, T. J. Min, Z. J. Sun, H. Loehner, X. N. Li, H. B. Li, C. L. Luo, Yuanbo Chen, K. Li, C. C. Zhang, M. L. Chen, B. Zhong, L. B. Guo, X. Y. Ma, Lei Li, W. L. Ding Ding, W. X. Gong, Ulrich Wiedner, Fang Liu, T. Ma, Yanping Huang, I. Denysenko, B. Y. Zhang, C. H. Li, M. Y. Dong, J. H. Zou, S. L. Olsen, R. A. Briere, S. S. Sun, X. S. Jiang, L. K. Jia, Jürgen Becker, R. E. Mitchell, W. B. Yan, M. N. Achasov, and S. Pacetti
Subjects: Physics, Branching fraction, Electron–positron annihilation, Partial wave analysis, Analytical chemistry, Radiative transfer, General Physics and Astronomy, Parity (physics), Atomic physics, Quantum number, Production rate, Gamma gamma
Abstract: A partial wave analysis of the p (p) over bar mass-threshold enhancement in the reaction J/psi -> gamma p (p) over bar is used to determine its J(PC) quantum numbers to be 0(-+), its peak mass to be below threshold at M 1832(-5)(+19)(stat)(-17)(+18)(syst) +/- 19(model) MeV/c(2), and its total width to be Gamma gamma X(p)]BR[X(p (p) over bar) -> p (p) over bar] = [9:0(-1.1)(+0.4)(stat)(-5.0)(+1:5)(syst) +/- 2: 3(model)] x 10(-5). A similar analysis performed on psi(3686) -> gamma p (p) over bar decays shows, for the first time, the presence of a corresponding enhancement with a production rate relative to that for J/psi decays of R = [5.08(-0.45)(+0: 71)(stat)(-058)(+0: 67) (syst) +/- 0: 12(model)%.
Published: 2012

12. ηπ+π−Resonant Structure around1.8 GeV/c2andη(1405)inJ/ψ→ωηπ+π−

Author: K. Li, Fang Liu, Xiang Li, X. Q. Hao, Yao Wang, Y. H. Yan, I. Denysenko, N. Wu, Krisztian Peters, Y. Ding, D. Cronin-Hennessy, R. R. Fan, B. Y. Zhang, Y. W. Liu, Z. Ning, Shan Wang, P. L. Wang, X. L. Luo, S. L. Olsen, R. A. Briere, B. Q. Wang, H. H. Zhang, G. R. Lu, X. X. Cao, X. K. Zhou, S. Spataro, M. Bertani, H. J. Lu, J. G. Lu, F. Li, Z. A. Zhu, M. H. Ye, G. S. Varner, Hang Liu, J. F. Sun, F. C. Ma, X. S. Jiang, W. G. Li, L. K. Jia, T. Hu, J. Z. Bai, Y. H. Guan, H. M. Hu, X. P. Xu, Y. Zeng, C. Zhu, Zhe Sun, J. F. Chang, W. B. Yan, M. N. Achasov, D. H. Sun, X. B. Ma, L. Y. Dong, Nicolas Berger, X. L. Wang, M. Maggiora, Ke Wang, Ling Zhao, X. L. Ji, Y. T. Liang, X. Cai, R. Baldini, Lei Zhao, Z. Y. He, Z. L. Hou, M. H. Gu, Yang Yang, M. Pelizaeus, H. M. Liu, G. A. Chelkov, X. Sun, A. Calcaterra, Z. G. Zhao, S. Pacetti, S. Grishin, H. Y. Sheng, C. P. Shen, Y. B. Chen, Talib Hussain, Xiaofeng Zhu, J. Z. Zhang, Guangming Huang, Mingming Yang, J. W. Zhang, Y. J. Mao, J. F. Hu, M. Greco, G. F. Cao, Xiangdong Ruan, Z. J. Sun, H. Loehner, Z. Wu, G. M. Xu, M. L. Chen, X. Wan, Shou-hua Zhu, C. Z. Yuan, V. V. Bytev, Y. G. Xie, J. F. Qiu, M. Y. Dong, C. X. Yu, L. Zhang, H. B. Li, C. L. Luo, HongSheng Zhao, F. F. Jing, R. Poling, S. X. Du, G. X. Sun, Z. Z. Xu, Y. H. Zheng, Xiaobo Zhu, Cong-Feng Qiao, Yuanbo Chen, Jianping Zheng, L. L. Jiang, I. B. Nikolaev, J. Zhang, Li Yan, J. H. Zou, Y. Xu, K. Y. Liu, K. H. Rashid, X. R. Li, C. C. Zhang, B. Zhong, L. B. Guo, M. Kavatsyuk, Y. P. Chu, W. L. Yuan, S. S. Sun, Lei Li, Q. Ouyang, L. Zhong, M. Shao, Y. T. Gu, S. S. Fang, A. Zallo, X. B. Ji, F. A. Harris, H. X. Yang, H.S. Xu, Q. J. Li, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Ulrich Wiedner, Chun S. J. Pun, Meng Wang, Tao Luo, N. Yu. Muchnoi, T. Ma, Yanping Huang, Z. Xue, Z. L. Zhao, Jiawei Zhao, Jürgen Becker, H. H. Liu, B. S. Zou, Q. P. Ji, Z. H. An, J. K. C. Leung, J. C. Li, Y. B. Liu, B. X. Zhang, Y. F. Wang, Z. P. Zheng, C. S. Ji, Y. H. Zhang, B. X. Yu, Y. Zhang, Y. B. Zhao, Q. An, X. Y. Ma, Q. G. Wen, W. X. Gong, Julian Schulze, Wei Wu, A. Zhemchugov, N. B. Li, H. Liang, T. Yang, J. Zhuang, M. X. Luo, D. V. Dedovich, B. Zheng, R. G. Ping, G. C. Liu, H. S. Chen, Z. Y. Wang, A. Sarantsev, D. H. Wei, J. S. Lange, Shujun Zhao, Feng Liu, S. H. Zhang, X. Y. Shen, Yong Liu, R. E. Mitchell, Huihui Liu, J. P. Liu, J. G. Messchendorp, Y. X. Yang, A. Q. Guo, C. J. Tang, H. L. Dai, Igor Boyko, Zhenli Xu, Chang Liu, T. R. Zhang, Ye Yuan, M. R. Shepherd, S. P. Yu Yu, Y. P. Lu, G. Li, B. Huang, L. Yu, C. D. Fu, X. H. Mo, L. S. Wang, Q. Zhao, Y. Z. Sun, Jingwei Zhao, Q. M. Ma, C. Q. Feng, Zhibing Li, Z. Y. Deng, Gang Zhao, X. H. Liu, Chuan Liu, Z. A. Liu, X. T. Liao, Xiao-Tong Lu, Xingguo Li, Y. S. Zhu, J. P. Dai, W. D. Li, Zhiqiang Liu, Miao He, H. L. Ma, D. M. Li, C. L. Ma, L. P. Zhou, Y. F. Liang, D. P. Jin, Bing Liu, Qi-Wen Lü, Cui Li, K. J. Zhu, C. Geng, Ting Zhao, Z. P. Mao, G. F. Xu, Q. J. Xu, D. Alberto, H. P. Cheng, J. Fang, Y. Ban, S. Jin, X. N. Li, S. P. Wen, X. S. Qin, X. R. Zhou, J. L. Fu, Cheng Li, S. Sonoda, X. Y. Song, Q. Liu, Qun-Yao Wang, Zhiyong Zhang, X. Liu, Z. J. Xiao, Y. P. Guo, K. Goetzen, W. Kuehn, S. Qian, Jialun Ping, L. L. Wang, X. Y. Zhang, Y. J. Sun, D. Toth, J. S. Huang, J. B. Jiao, C. X. Liu, J. Zhong, M. Destefanis, X. Tang, Sachio Komamiya, M. G. Zhao, Xuantong Zhang, J. M. Bian, Zhenyu Zhang, J. C. Chen, Nasser Kalantar-Nayestanaki, Z. G. Wang, Q. A. Malik, H. Y. Zhang, J. X. Zuo, G. F. Chen, J. Y. Zhang, Y. K. Heng, J. Min, H. B. Liu, Y. Nefedov, K. L. He, M. Qi, H. L. Tian, S. B. Liu, L. H. Wu, Y.N. Gao, Y. Q. Wang, X. T. Huang, M. Ablikim, A. A. Zafar, G. Rong, S. J. Chen, O. Bondarenko, Zujian Wang, B. Spruck, X. H. Zhao, and H. Mao
Subjects: Nuclear physics, Physics, Branching fraction, Electron–positron annihilation, Mass spectrum, Pi, Analytical chemistry, General Physics and Astronomy, High Energy Physics::Experiment, Nuclear Experiment, Omega
Abstract: We present results of a study of the decay J/psi -> omega eta pi(+)pi(-) using a sample of (225.2 +/- 2.8) x 10(6) J/psi events collected by the BESIII detector, and report the observation of a new process J/psi -> omega X(1870) with a statistical significance of 7.2 sigma, in which X(1870) decays to a(0)(+/-)(980)pi(-/+). Fitting to eta pi(+)pi(-) mass spectrum yields a mass M = 1877.3 +/- 6.3(stat)(-7.4)(+3.4)(syst) MeV/c(2), a width Gamma = 57 +/- 12(stat)(-4)(+19)(syst) MeV/c(2), and a product branching fraction B(J/psi -> omega X) x B(X -> a(0)(+/-)(980)pi(-/+)) x B(a(0)(+/-)(980)(->) eta pi(+/-)) = [1.50 +/- 0.26(stat)(-0.36)(+0.72)(syst)] x 10(-4). Signals for J/psi -> omega f(1)(1285) and J/psi -> omega eta(1405) are also clearly observed and measured.
Published: 2011

13. Observation ofχc1Decays into Vector Meson Pairsϕϕ,ωω, andωϕ

Author: Z. G. Wang, J. F. Sun, H. Y. Zhang, P. L. Wang, Qi-Wen Lü, Tao Luo, J. X. Zuo, Y. Zeng, J. K. C. Leung, Zhe Sun, G. F. Chen, M. Maggiora, Ling Zhao, A. Q. Guo, J. Y. Zhang, Y. Q. Wang, B. X. Yu, J. B. Jiao, F. A. Harris, W. B. Yan, Y. J. Mao, H. X. Yang, H.S. Xu, Chun S. J. Pun, Lei Zhao, Z. Y. He, Z. L. Hou, J. P. Liu, S. Grishin, Y. B. Chen, J. G. Messchendorp, Z. P. Zhang, J. Zhong, Xiaofeng Zhu, J. Z. Zhang, X. Tang, X. T. Huang, M. Qi, S. Pacetti, J. C. Li, L. L. Jiang, H. L. Tian, H. S. Chen, N. B. Li, Q. A. Malik, B. Spruck, Y. Ding, Z. P. Zheng, G. Rong, X. H. Liu, B. J. Liu, F. Li, Yong Liu, F. C. Ma, J. Zhuang, H. L. Dai, M. X. Luo, Y. K. Heng, Zhiqiang Liu, Miao He, D. V. Dedovich, Feng Liu, Chang Liu, Xiang Liu, J. P. Dai, Y. H. Guan, G. R. Lu, X. X. Cao, C. Z. Yuan, L. An, R. R. Fan, Shan Wang, S. Sonoda, N. Wu, M. N. Achasov, X. T. Liao, L. P. Zhou, Sachio Komamiya, C. L. Ma, G. F. Xu, M. Ablikim, T. R. Zhang, S. Jin, K. J. Zhu, L. Yu, Z. J. Xiao, Z. A. Zhu, J. F. Qiu, Y. W. Liu, Guofa Xu, M. Shao, Y. T. Gu, Xuantong Zhang, Zhenli Xu, Z. P. Mao, G. R. Liao, A. A. Zafar, M. Y. Dong, A. Zallo, H. J. Lu, J. G. Lu, C. Geng, S. B. Liu, Q. J. Li, D. H. Sun, Y. C. Xu, Z. L. Zhao, Y. Nefedov, W. D. Li, Y. P. Guo, Krisztian Peters, Lingxuan Zhang, Qun-Yao Wang, B. Q. Wang, X. Y. Song, H. P. Cheng, C. P. Shen, J. Fang, M. Z. Wang, R. Baldini, G. S. Varner, Q. M. Ma, Y. B. Zhao, D. Toth, H. B. Li, J. Z. Bai, C. L. Luo, J. F. Chang, M. Kavatsyuk, Yuanbo Chen, Hang Liu, T. Hu, Julian Schulze, Cui Li, Z. H. An, F. F. Jing, C. C. Zhang, B. Zhong, L. B. Guo, Lei Li, X. L. Li, HongSheng Zhao, X. N. Li, S. Qian, Q. An, Jialun Ping, Jianping Zheng, C. S. Ji, Y. P. Chu, Z. A. Liu, X. Y. Zhang, Y. J. Sun, B. X. Zhang, H. Mao, X. Cai, Jingwei Zhao, W. L. Yuan, Q. Ouyang, L. Zhong, Y. H. Yan, A. Sarantsev, D. H. Wei, J. S. Lange, Y. H. Zheng, Xiaobo Zhu, Cong-Feng Qiao, N. Yu. Muchnoi, Y. H. Zhang, Y. Ban, S. S. Fang, D. Cronin-Hennessy, Hao Liu, J. S. Huang, C. X. Liu, G. A. Chelkov, X. B. Ji, H. Liang, S. L. Olsen, T. Yang, Q. G. Wen, Y. F. Liang, T. Ma, Yanping Huang, Q. P. Ji, J. H. Zou, Guangming Huang, C. J. Tang, Y. Yuan, Y. S. Zhu, M. G. Zhao, Y. H. Yang, S. S. Sun, Y. P. Lu, D. P. Jin, Mingming Yang, I. R. Boyko, M. H. Ye, X. L. Ji, S. P. Wen, Y. B. Liu, X. S. Qin, X. R. Zhou, K. Goetzen, W. Kuehn, Z. Y. Wang, K. H. Rashid, S. X. Du, K. Y. Liu, Z. Xue, M. Y. Duan, Z. G. Zhao, Yao Wang, J. L. Fu, Y. T. Liang, Cheng Li, S. H. Zhang, X. Y. Shen, Z. Y. Zhang, Z. Wu, Ke Wang, X. Sun, X. L. Luo, Z. Ning, H. H. Zhang, Y. N. Gao, Z. J. Sun, Q. Liu, M. Destefanis, Xichao Ruan, H. Loehner, G. Li, S. J. Chen, Y. Zhang, M. H. Gu, Jürgen Becker, J. M. Bian, H. Y. Sheng, R. Poling, V. V. Bytev, Y. G. Xie, R. E. Mitchell, X. L. Wang, X. Wan, S. J. Zhao, C. D. Fu, Jun-Yi Zhang, C. Q. Feng, C. X. Yu, X. B. Ma, Z. Y. Deng, M. L. Chen, T. C. Zhao, L. Y. Dong, Fang Liu, U. Wiedner, B. Zheng, R. G. Ping, Wei Wu, G. C. Liu, Chuan Liu, W. G. Li, L. H. Wu, J. C. Chen, S. Spataro, C. Zhu, H. M. Liu, I. Denysenko, M. Greco, Shou-hua Zhu, J. F. Hu, Zujian Wang, G. F. Cao, Xiao-Tong Lu, B. Y. Zhang, X. R. Li, H. L. Ma, B. S. Zou, X. H. Zhao, D. M. Li, B. Huang, X. H. Mo, L. S. Wang, M. Pelizaeus, Y. X. Yang, O. Bondarenko, M. R. Shepherd, P. Zweber, L. L. Wang, G. X. Sun, Li Yan, Q. Zhao, Y. Z. Sun, Z. Jiao, D. H. Zhang, Gang Zhao, Alexey Zhemchugov, H. M. Hu, F. H. Liu, Nicolas Berger, J. W. Zhang, Jiawei Zhao, X. K. Zhou, X. Q. Hao, X. Q. Li, Z. Z. Xu, Z. B. Li, Y. F. Wang, T. Hussain, X. Y. Ma, W. X. Gong, R. A. Briere, X. S. Jiang, L. K. Jia, J. Min, H. B. Liu, K. L. He, and M. Bertani
Subjects: Physics, Particle physics, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, Vector meson, Omega, Helicity
Abstract: Using $(106\ifmmode\pm\else\textpm\fi{}4)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\psi}(3686)$ events accumulated with the BESIII detector at the BEPCII ${e}^{+}{e}^{\ensuremath{-}}$ collider, we present the first measurement of decays of ${\ensuremath{\chi}}_{c1}$ to vector meson pairs $\ensuremath{\phi}\ensuremath{\phi}$, $\ensuremath{\omega}\ensuremath{\omega}$, and $\ensuremath{\omega}\ensuremath{\phi}$. The branching fractions are measured to be $(4.4\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.5)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $(6.0\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.7)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, and $(2.2\ifmmode\pm\else\textpm\fi{}0.6\ifmmode\pm\else\textpm\fi{}0.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, for ${\ensuremath{\chi}}_{c1}\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}$, $\ensuremath{\omega}\ensuremath{\omega}$, and $\ensuremath{\omega}\ensuremath{\phi}$, respectively, which indicates that the hadron helicity selection rule is significantly violated in ${\ensuremath{\chi}}_{\mathrm{cJ}}$ decays. In addition, the measurement of ${\ensuremath{\chi}}_{\mathrm{cJ}}\ensuremath{\rightarrow}\ensuremath{\omega}\ensuremath{\phi}$ provides the first indication of the rate of doubly OZI-suppressed ${\ensuremath{\chi}}_{\mathrm{cJ}}$ decay. Finally, we present improved measurements for the branching fractions of ${\ensuremath{\chi}}_{c0}$ and ${\ensuremath{\chi}}_{c2}$ to vector meson pairs.
Published: 2011

14. ηπ+ π- resonant structure around 1.8 GeV/c(2) and η(1405) in J/ψ → ωηπ+ π

Author: M, Ablikim, M N, Achasov, D, Alberto, Q, An, Z H, An, J Z, Bai, R, Baldini, Y, Ban, J, Becker, N, Berger, M, Bertani, J M, Bian, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, A C, Calcaterra, G F, Cao, X X, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, I, Denysenko, M, Destefanis, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, R R, Fan, J, Fang, S S, Fang, C Q, Feng, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, M, Greco, S, Grishin, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, N, Kalantar-Nayestanaki, M, Kavatsyuk, S, Komamiya, W, Kuehn, J S, Lange, J K C, Leung, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, K, Li, Lei, Li, N B, Li, Q J, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, G C, Liu, H, Liu, H B, Liu, H H, Liu, H M, Liu, H W, Liu, J P, Liu, K, Liu, K Y, Liu, Q, Liu, S B, Liu, X, Liu, X H, Liu, Y B, Liu, Y W, Liu, Yong, Liu, Z A, Liu, Z Q, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, T, Ma, X, Ma, X Y, Ma, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, R E, Mitchell, X H, Mo, N Yu, Muchnoi, Y, Nefedov, I B, Nikolaev, Z, Ning, S L, Olsen, Q, Ouyang, S, Pacetti, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Sonoda, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, H L, Tian, D, Toth, G S, Varner, X, Wan, B Q, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, S G, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, Q G, Wen, S P, Wen, U, Wiedner, L H, Wu, N, Wu, W, Wu, Z, Wu, Z J, Xiao, Y G, Xie, G F, Xu, G M, Xu, H, Xu, Q J, Xu, X P, Xu, Y, Xu, Z R, Xu, Z Z, Xu, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, M, Yang, T, Yang, Y, Yang, Y X, Yang, M, Ye, M H, Ye, B X, Yu, C X, Yu, L, Yu, S P Yu, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, Jiawei, Zhao, Jingwei, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, Z L, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, and J X, Zuo
Abstract: We present results of a study of the decay J/ψ → ωηπ+ π- using a sample of (225.2 ± 2.8) × 10(6) J/ψ events collected by the BESIII detector, and report the observation of a new process J/ψ → ωX(1870) with a statistical significance of 7.2σ, in which X(1870) decays to a(0)(±)(980)π±. Fitting to ηπ+ π- mass spectrum yields a mass M = 1877.3 ± 6.3(stat)(-7.4)(+3.4)(syst) MeV/c(2), a width Γ = 57 ± 12(stat)(-4)(+19)(syst) MeV/c(2), and a product branching fraction B(J/ψ → ωX) × B(X→a(0)(±)(980)π±) × B(a(0) (±)(980) → ηπ±) = [1.50 ± 0.26(stat)(-0.36)(+0.72) (syst)] × 10(-4). Signals for J/ψ → ωf(1)(1285) and J/ψ → ω η(1405) are also clearly observed and measured.
Published: 2011

15. Observation of χ(c1) decays into vector meson pairs φφ, ωω, and ωφ

Author: M, Ablikim, M N, Achasov, L, An, Q, An, Z H, An, J Z, Bai, R, Baldini, Y, Ban, J, Becker, N, Berger, M, Bertani, J M, Bian, O, Bondarenko, I, Boyko, R A, Briere, V, Bytev, X, Cai, G F, Cao, X X, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Chen, H P, Cheng, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, I, Denysenko, M, Destefanis, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, M Y, Duan, R R, Fan, J, Fang, S S, Fang, C Q, Feng, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, M, Greco, S, Grishin, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, Y P, Guo, X Q, Hao, F A, Harris, K L, He, M, He, Z Y, He, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, T, Hussain, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, F F, Jing, M, Kavatsyuk, S, Komamiya, W, Kuehn, J S, Lange, J K C, Leung, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J C, Li, Lei, Li, N B, Li, Q J, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Z B, Li, H, Liang, Y F, Liang, Y T, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, G C, Liu, H, Liu, H B, Liu, H M, Liu, H W, Liu, J P, Liu, K, Liu, K Y, Liu, Q, Liu, S B, Liu, X, Liu, X H, Liu, Y B, Liu, Y W, Liu, Yong, Liu, Z A, Liu, Z Q, Liu, H, Loehner, G R, Lu, H J, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, T, Ma, X, Ma, X Y, Ma, M, Maggiora, Q A, Malik, H, Mao, Y J, Mao, Z P, Mao, J G, Messchendorp, J, Min, R E, Mitchell, X H, Mo, N Yu, Muchnoi, Y, Nefedov, Z, Ning, S L, Olsen, Q, Ouyang, S, Pacetti, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, C S J, Pun, M, Qi, S, Qian, C F, Qiao, X S, Qin, J F, Qiu, K H, Rashid, G, Rong, X D, Ruan, A, Sarantsev, J, Schulze, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, M R, Shepherd, X Y, Song, S, Sonoda, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, X F, Tang, H L, Tian, D, Toth, G S, Varner, X, Wan, B Q, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, Q, Wang, S G, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, Q G, Wen, S P, Wen, U, Wiedner, L H, Wu, N, Wu, W, Wu, Z, Wu, Z J, Xiao, Y G, Xie, G F, Xu, G M, Xu, H, Xu, Y, Xu, Z R, Xu, Z Z, Xu, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, M, Yang, T, Yang, Y, Yang, Y X, Yang, M, Ye, M H, Ye, B X, Yu, C X, Yu, L, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A A, Zafar, A, Zallo, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, T R, Zhang, X J, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Z P, Zhang, Z Y, Zhang, G, Zhao, H S, Zhao, Jiawei, Zhao, Jingwei, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, Z L, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhong, L, Zhou, X K, Zhou, X R, Zhou, C, Zhu, K, Zhu, K J, Zhu, S H, Zhu, X L, Zhu, X W, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, J X, Zuo, and P, Zweber
Abstract: Using (106±4)×10⁻⁶ ψ(3686) events accumulated with the BESIII detector at the BEPCII e⁺e⁻ collider, we present the first measurement of decays of χ(c1) to vector meson pairs φφ, ωω, and ωφ. The branching fractions are measured to be (4.4±0.3±0.5)×10⁻⁴, (6.0±0.3±0.7)×10⁻⁴, and (2.2±0.6±0.2)×10⁻⁵, for χ(c1)→φφ, ωω, and ωφ, respectively, which indicates that the hadron helicity selection rule is significantly violated in χ(cJ) decays. In addition, the measurement of χ(cJ)→ωφ provides the first indication of the rate of doubly OZI-suppressed χ(cJ) decay. Finally, we present improved measurements for the branching fractions of χ(c0) and χ(c2) to vector meson pairs.
Published: 2011

16. Confirmation of theX(1835)and Observation of the ResonancesX(2120)andX(2370)inJ/ψ→γπ+π−η′

Author: HY Zhang, Z. Xue, H. M. Hu, Zong-Ping Zheng, M. Qi, M. Y. Dong, Haosheng Chen, F. F. Jing, B. Zhong, L. B. Guo, W. L. Yuan, S. S. Sun, Z. Ning, P. L. Wang, X. L. Luo, H. S. Zhao, Y. B. Liu, X. B. Ma, Y. Xu, N. B. Li, Q Zhao, Meng Wang, N. Yu. Muchnoi, Hai Liang, L. An, Yang Gao, S. G. Wang, F. Feldbauer, Qingming Ma, M. H. Ye, J. C. Chen, M. Y. Duan, D. P. Jin, Chang Liu, C. Q. Feng, C. X. Yu, Zhibing Li, Y. H. Zhang, Q. W. Lu, A. Zhemchugov, Kunlun He, K. Peters, Z. P. Mao, X. L. Wang, R. R. Fan, T. R. Zhang, Chang-Zheng Yuan, D. H. Zhang, X. H. Zhao, Shou-hua Zhu, X. K. Zhou, J. F. Hu, C. Motzko, J. H. Zou, X. B. Ji, K. Goetzen, Y. H. Yan, J. F. Sun, L. Yu, G. X. Sun, W. G. Li, S. L. Olsen, G. Li, Z. Y. Wang, X. Q. Li, W. Kuehn, Hang Liu, J. S. Huang, X. R. Li, M. Maggiora, M. Bertani, C. P. Shen, X. Q. Hao, D. H. Sun, H. Loehner, Z. L. Zhao, G. R. Lu, X. T. Liao, H. Xu, Y. Q. Wang, M. Ablikim, F. C. Ma, D. H. Wei, J. Z. Bai, Y. T. Gu, G. Rong, G. M. Huang, S. J. Zhao, Julian Schulze, Z. Wu, H. H. Zhang, I. Boyko, L. L. Wang, Yi-Fang Zhao, L. Zhang, Q. J. Li, H. M. Liu, X. Y. Zhang, Z. Z. Xu, Y. Zeng, X. L. Ji, J. F. Qiu, M. L. Chen, A. A. Zafar, Xie-Yan Song, B. Huang, Y. H. Guan, L. S. Wang, L. Y. Dong, Niklaus Berger, Yao Wang, G. S. Varner, H. L. Ma, K. Y. Liu, H. L. Tian, C. J. Tang, Z. H. An, M. Shao, H. H. Liu, X. H. Liu, B. Spruck, Ling Zhong, Z. A. Zhu, B. Q. Wang, H. Y. Sheng, Xingtao Huang, M. Greco, P. Zweber, U. Wiedner, Y. J. Mao, V. Bytev, Feng Liu, S. P. Wen, Li Yan, Ling Zhao, Q. Ouyang, Shisong Fang, K. H. Rashid, Y. F. Liang, C. S. Ji, Z. Jiao, Fu-Hu Liu, Y. F. Wang, J. Zhuang, L. H. Wu, R. G. Ping, F. A. Harris, Lei Zhao, Z. Y. He, Yang Yang, Q. Liu, X. L. Li, X. S. Jiang, Brent J. Liu, T. Yang, M. X. Luo, X. D. Ruan, W. B. Yan, L. L. Jiang, M. Destefanis, Cui Li, J. P. Dai, Chunyan Zhu, T. Hussain, X. Y. Ma, H. B. Liu, B. S. Zou, C. X. Liu, Y. S. Zhu, I. Denysenko, Y. T. Liang, X. F. Tang, Z. G. Zhao, Y. X. Yang, J. S. Lange, G. M. Xu, Chunmei Zhang, W. X. Gong, C. Geng, Xueyong Shen, Guangyu Zhao, H. Mao, J. Zhang, M. Kavatsyuk, Zujian Wang, H. J. Lu, Zhiyong Zhang, G. Chelkov, H. L. Dai, M. R. Shepherd, X. X. Cao, X. Liu, Y. W. Liu, T. C. Zhao, J. L. Ping, Y. Z. Sun, Zhi-Jun Sun, S. X. Du, R. Poling, B. X. Yu, Yuanbo Chen, S. B. Liu, Z. Y. Deng, Y. K. Heng, J. W. Zhang, J. M. Bian, Q. A. Malik, Jingwei Zhao, Lei Li, Hua-Bin Li, Z. P. Zhang, Y. Ding, Zhiqiang Liu, Miao He, Daniel P Cronin-Hennessy, R. A. Briere, Xing Lu, A. Zallo, Q. An, Y. Zhang, J. Zhong, T. Ma, S. Qian, Yuehong Xie, Wei Wu, Zhe Sun, G. C. Liu, L. K. Jia, Jiawei Zhao, Y. Yuan, H. P. Cheng, J. Fang, J. F. Chang, S. Grishin, Feng Li, Y. B. Chen, J. Z. Zhang, G. F. Cao, K. Wang, Q. Ji, Jürgen Becker, N. Wu, R. E. Mitchell, M. N. Achasov, J. X. Zuo, S. Pacetti, Fang Liu, Lei Zhou, D. M. Li, B. Y. Zhang, Cheng Li, Y. H. Zheng, X. N. Li, Tao Luo, Xian Lun Zhu, C. D. Fu, Jiangchao Li, Yong Liu, G. F. Xu, M. Pelizaeus, C. L. Luo, B. X. Zhang, Zhihao Xu, Chuan Liu, Chun S. J. Pun, M. G. Zhao, J. P. Liu, J. G. Messchendorp, A. Q. Guo, Mingming Yang, Z. A. Liu, Tao Hu, X. S. Qin, X. R. Zhou, J. L. Fu, Z. J. Xiao, M. H. Gu, Z. G. Wang, X. Wan, B. Zheng, J. Y. Zhang, J. Min, Y. J. Sun, D. Dedovich, Wei Li, S. Sonoda, Shouguang Jin, X. Tang, Y. P. Huang, Sachio Komamiya, Qun-Yao Wang, A. Sarantsev, S. Spataro, Y. Nefedov, X. D. Sun, H. X. Yang, K. J. Zhu, Xuantong Zhang, Y. Ban, Y. P. Lu, G. R. Liao, D. Toth, R. Baldini, X. H. Mo, Jianping Zheng, X. W. Zhu, C. L. Ma, S. H. Zhang, Guo-Ming Chen, Z. L. Hou, Sai-Juan Chen, Y. P. Guo, J. K. C. Leung, J. B. Jiao, Y. P. Chu, Junguang Lu, C. F. Qiao, and X. Cai
Subjects: Physics, Nuclear physics, Particle physics, Pion, Meson, Electron–positron annihilation, Hadron, Mass spectrum, General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Quarkonium, Spectral line
Abstract: With a sample of (225.2 +/- 2.8) x 10(6) J/psi events registered in the BESIII detector, J/psi -> gamma pi(+)pi(-)eta' is studied using two eta' decay modes: eta' -> pi(+)pi(-)eta and eta' -> gamma rho(0). The X(1835), which was previously observed by BESII, is confirmed with a statistical significance that is larger than 20 sigma. In addition, in the pi(+)pi(-)eta' invariant-mass spectrum, the X(2120) and the X(2370), are observed with statistical significances larger than 7.2 sigma and 6.4 sigma, respectively. For the X(1835), the angular distribution of the radiative photon is consistent with expectations for a pseudoscalar.
Published: 2011

17. Evidence forψ′Decays intoγπ0andγη

Author: M. Ablikim, M. N. Achasov, L. An, Q. An, Z. H. An, J. Z. Bai, R. Baldini, Y. Ban, J. Becker, N. Berger, M. Bertani, J. M. Bian, I. Boyko, R. A. Briere, V. Bytev, X. Cai, G. F. Cao, X. X. Cao, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, Y. Chen, Y. B. Chen, H. P. Cheng, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, I. Denysenko, M. Destefanis, Y. Ding, L. Y. Dong, M. Y. Dong, S. X. Du, M. Y. Duan, R. R. Fan, J. Fang, S. S. Fang, F. Feldbauer, C. Q. Feng, C. D. Fu, J. L. Fu, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, M. Greco, S. Grishin, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, Y. P. Guo, X. Q. Hao, F. A. Harris, K. L. He, M. He, Z. Y. He, Y. K. Heng, Z. L. Hou, H. M. Hu, J. F. Hu, T. Hu, B. Huang, G. M. Huang, J. S. Huang, X. T. Huang, Y. P. Huang, T. Hussain, C. S. Ji, Q. Ji, X. B. Ji, X. L. Ji, L. K. Jia, L. L. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, F. F. Jing, M. Kavatsyuk, S. Komamiya, W. Kuehn, J. S. Lange, J. K. C. Leung, Cheng Li, Cui Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, Lei Li, N. B. Li, Q. J. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, X. R. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, X. T. Liao, B. J. Liu, C. L. Liu, C. X. Liu, C. Y. Liu, F. H. Liu, Fang Liu, Feng Liu, G. C. Liu, H. Liu, H. B. Liu, H. M. Liu, H. W. Liu, J. P. Liu, K. Liu, K. Y. Liu, Q. Liu, S. B. Liu, X. H. Liu, Y. B. Liu, Y. W. Liu, Yong Liu, Z. A. Liu, Z. Q. Liu, H. Loehner, G. R. Lu, H. J. Lu, J. G. Lu, Q. W. Lu, X. R. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, C. L. Ma, F. C. Ma, H. L. Ma, Q. M. Ma, T. Ma, X. Ma, X. Y. Ma, M. Maggiora, Q. A. Malik, H. Mao, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, R. E. Mitchell, X. H. Mo, C. Motzko, N. Yu. Muchnoi, Y. Nefedov, Z. Ning, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, K. Peters, J. L. Ping, R. G. Ping, R. Poling, C. S. J. Pun, M. Qi, S. Qian, C. F. Qiao, X. S. Qin, J. F. Qiu, K. H. Rashid, G. Rong, X. D. Ruan, A. Sarantsev, J. Schulze, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, X. Y. Song, S. Sonoda, S. Spataro, B. Spruck, D. H. Sun, G. X. Sun, J. F. Sun, S. S. Sun, X. D. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, X. F. Tang, H. L. Tian, D. Toth, G. S. Varner, X. Wan, B. Q. Wang, K. Wang, L. L. Wang, L. S. Wang, P. Wang, P. L. Wang, Q. Wang, S. G. Wang, X. L. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. Y. Wang, D. H. Wei, S. P. Wen, U. Wiedner, L. H. Wu, N. Wu, W. Wu, Z. Wu, Z. J. Xiao, Y. G. Xie, G. F. Xu, G. M. Xu, H. Xu, Y. Xu, Z. R. Xu, Z. Z. Xu, Z. Xue, L. Yan, W. B. Yan, Y. H. Yan, H. X. Yang, M. Yang, T. Yang, Y. Yang, Y. X. Yang, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, L. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. A. Zafar, A. Zallo, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, L. Zhang, S. H. Zhang, T. R. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, H. S. Zhao, Jiawei Zhao, Jingwei Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, Z. L. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, Z. P. Zheng, B. Zhong, J. Zhong, L. Zhong, L. Zhou, X. K. Zhou, X. R. Zhou, C. Zhu, K. Zhu, K. J. Zhu, S. H. Zhu, X. L. Zhu, X. W. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, J. H. Zou, J. X. Zuo, and P. Zweber
Subjects: Physics, General Physics and Astronomy
Published: 2010

18. Measurements ofhc(P11)inψ′Decays

Author: J. G. Lu, H. H. Zhang, T. Hu, Sachio Komamiya, Y. J. Sun, Zong-Ping Zheng, S. Sonoda, Xiao-Yang Zhang, P. L. Wang, Qi-Wen Lü, M. G. Zhao, Y. Yuan, Guangming Huang, Z. Wu, Xiaobo Zhu, Y. Zeng, Zhe Sun, Miao He, Y. X. Yang, Y. P. Lu, Q. Zhao, Peng Chen, H. B. Liu, Jifeng Hu, L. P. Zhou, Q. Liu, Qun-Yao Wang, Q. P. Ji, Y. Z. Sun, M. Qi, Y. F. Wang, H. L. Tian, J. M. Bian, Zhenyu Zhang, J. Z. Bai, Yang Gao, Xiangdong Ruan, Hongli Ma, S. Lange, N. Yu. Muchnoi, Z. P. Mao, Feng Liu, Shan Wang, S. Grishin, J. Z. Zhang, J. Fang, Y. H. Zhang, Yi-Fang Zhao, S. B. Liu, J. B. Jiao, M. Maggiora, Ling Zhao, Y. Ding, Ming Xu, Jia Liu, L. Zhang, X. T. Liao, J. C. Chen, G. S. Varner, Hang Liu, Y. H. Yan, J. Zhong, H. Y. Sheng, X. Y. Ma, W. X. Gong, X. Wan, Lei Zhao, Yi Bing Chen, Z. Y. He, Z. L. Hou, X. B. Ma, Yu-Bin Liu, Y. Nefedov, Yao Wang, B. Huang, X. H. Mo, L. S. Wang, F. Li, Z. Y. Wang, C. X. Yu, G. R. Lu, X. X. Cao, HongSheng Zhao, R. Poling, K. Goetzen, W. Kuehn, Jianping Zheng, W. G. Li, Y. J. Mao, Z. A. Zhu, B. Zheng, R. G. Ping, M. H. Ye, F. C. Ma, Shuang Han, Y. P. Guo, J. K. C. Leung, Jiawei Wang, B. Q. Wang, W. B. Yan, L. An, M. N. Achasov, S. J. Zhao, J. S. Huang, X. R. Li, P. Zweber, M. Y. Duan, X. L. Ji, D. H. Sun, F. A. Harris, B. S. Zou, H. Xu, Q. M. Zhu, F. P. Ning, K. Y. Liu, Z. Xue, G. A. Chelkov, X. P. Xu, C. Zhu, M. Destefanis, Y. P. Chu, X. B. Ji, C. F. Qiao, M. Shao, Y. T. Gu, Z. G. Zhao, S. Qian, Jialun Ping, G. M. Xu, C. Z. Yuan, L. L. Wang, Niklaus Berger, X. L. Li, Brent J. Liu, Y. W. Liu, X. H. Liu, J. F. Qiu, Y. Zhang, Q. An, Yuehong Xie, C. S. Ji, Yongxiang Li, M. L. Chen, X. Tang, Y. T. Liang, Wei Wu, A. Zhemchugov, X. D. Wang, Q. J. Li, X. Q. Li, T. R. Liang, San-Ming Yang, J. F. Sun, Y. Q. Wang, J. F. Chang, S. L. Olsen, G. C. Liu, R. A. Briere, H. M. Liu, Z. B. Li, J. P. Dai, Z. H. An, X. S. Jiang, C. J. Tang, Kunlun He, S. X. Du, N. Wu, Krisztian Peters, A. Sarantsev, D. H. Wei, C. L. Ma, Z. A. Liu, Y. Ban, X. Cai, L. K. Jia, Xiao-Tong Lu, M. Ablikim, G. Rong, M. Y. Dong, K. J. Zhu, H. H. Liu, Mingming Yang, W. D. Li, G. F. Cao, G. F. Xu, G. R. Liao, J. C. Li, Michela Greco, S. P. Wen, D. M. Li, L. Y. Dong, S. H. Zhang, S. Jin, H. M. Hu, C. Geng, Cui Li, X. N. Li, C. P. Shen, B. X. Zhang, Yin Xu, S. Spataro, X. L. Wang, M. X. Luo, J. H. Zou, H. X. Yang, Z. J. Xiao, M. Pelizaeus, J. L. Fu, D. V. Dedovich, Peidong Yang, J. W. Zhang, S. S. Sun, L. H. Wu, D. Cronin-Hennessy, L. L. Jiang, Chun S. J. Pun, Xingtao Huang, X. W. Hu, D. Toth, Y. S. Zhu, H. B. Li, C. L. Luo, Z. L. Zhou, L. P. Chen, J. P. Liu, C. X. Liu, Ke Wang, G. Li, Jingwei Zhao, Jiawei Zhao, Fang Liu, Cang Zhao, C. C. Zhang, B. Zhong, L. B. Guo, Tiefu Zhao, I. Denysenko, Xueyong Shen, Lei Li, Sai-Juan Chen, Zujian Wang, Qingming Ma, B. Y. Zhang, Ulrich Wiedner, C. D. Fu, C. Q. Feng, Cheng Li, Jiemin Li, Zhi-Jun Sun, Z. Y. Deng, Y. H. Zheng, X. Sun, Y. F. Liang, Z. Z. Xu, Min Xu, B. Spruck, D. P. Jin, Chang Liu, X. H. Zhao, Q. Ouyang, Y. B. Liu, G. X. Sun, Li Yan, V. V. Bytev, Fu-Hu Liu, D. H. Zhang, L. Yu, Hao Liang, X. L. Luo, X. F. Tang, Y. M. Wu, Lu Li, A. Q. Guo, J. Zhuang, Tao Luo, B. X. Yu, Chuan Liu, H. S. Chen, Yong Liu, H. L. Dai, Igor Boyko, Z. G. Wang, H. Y. Zhang, J. X. Zuo, G. F. Chen, J. Y. Zhang, J. Min, Y. K. Heng, and Yanping Huang
Subjects: Physics, Particle decay, Classical mechanics, Meson, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, Pi, General Physics and Astronomy, Quarkonium, Dimensionless quantity
Abstract: We present measurements of the charmonium state h(c) (P-1(1)) made with 106 x 10(6) psi' events collected by BESIII at BEPCII. Clear signals are observed for psi' -> pi(0)h(c) with and without the subsequent radiative decay h(c) -> gamma eta(c). First measurements of the absolute branching ratios B(psi' -> pi(0)h(c)) = (8.4 +/- 1.3 +/- 1.0 x 10(-4) and B(h(c) -> gamma eta(c)) = (54.3 +/- 6.7 +/- 5.2)% are presented. A statistics-limited determination of the previously unmeasured h(c) width leads to an upper limit Gamma(h(c)) pi(0)h(c)) x B(h(c) -> gamma eta(c)) = (4.58 +/- 0.40 +/- 0.50) x 10(-4) are consistent with previous results.
Published: 2010

19. Measurements of h(c)(1P(1)) in psi' decays

Author: M, Ablikim, M N, Achasov, L, An, Q, An, Z H, An, J Z, Bai, Y, Ban, N, Berger, J M, Bian, I, Boyko, R A, Briere, V, Bytev, X, Cai, G F, Cao, X X, Cao, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, L P, Chen, M L, Chen, P, Chen, S J, Chen, Y B, Chen, Y P, Chu, D, Cronin-Hennessy, H L, Dai, J P, Dai, D, Dedovich, Z Y, Deng, I, Denysenko, M, Destefanis, Y, Ding, L Y, Dong, M Y, Dong, S X, Du, M Y, Duan, J, Fang, C Q, Feng, C D, Fu, J L, Fu, Y, Gao, C, Geng, K, Goetzen, W X, Gong, M, Greco, S, Grishin, Y T, Gu, A Q, Guo, L B, Guo, Y P, Guo, S Q, Han, F A, Harris, K L, He, M, He, Z Y, He, Y K, Heng, Z L, Hou, H M, Hu, J F, Hu, T, Hu, X W, Hu, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Huang, C S, Ji, Q, Ji, X B, Ji, X L, Ji, L K, Jia, L L, Jiang, X S, Jiang, J B, Jiao, D P, Jin, S, Jin, S, Komamiya, W, Kuehn, S, Lange, J K C, Leung, Cheng, Li, Cui, Li, D M, Li, F, Li, G, Li, H B, Li, J, Li, J C, Li, Lei, Li, Lu, Li, Q J, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, X R, Li, Y X, Li, Z B, Li, H, Liang, T R, Liang, Y T, Liang, Y F, Liang, G R, Liao, X T, Liao, B J, Liu, C L, Liu, C X, Liu, C Y, Liu, F H, Liu, Fang, Liu, Feng, Liu, G C, Liu, H, Liu, H B, Liu, H M, Liu, H W, Liu, J, Liu, J P, Liu, K, Liu, K Y, Liu, Q, Liu, S B, Liu, X H, Liu, Y B, Liu, Y F, Liu, Y W, Liu, Yong, Liu, Z A, Liu, G R, Lu, J G, Lu, Q W, Lu, X R, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, C L, Ma, F C, Ma, H L, Ma, Q M, Ma, X, Ma, X Y, Ma, M, Maggiora, Y J, Mao, Z P, Mao, J, Min, X H, Mo, N Yu, Muchnoi, Y, Nefedov, F P, Ning, S L, Olsen, Q, Ouyang, M, Pelizaeus, K, Peters, J L, Ping, R G, Ping, R, Poling, C S J, Pun, M, Qi, S, Qian, C F, Qiao, J F, Qiu, G, Rong, X D, Ruan, A, Sarantsev, M, Shao, C P, Shen, X Y, Shen, H Y, Sheng, S, Sonoda, S, Spataro, B, Spruck, D H, Sun, G X, Sun, J F, Sun, S S, Sun, X D, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, X F, Tang, H L, Tian, D, Toth, G S, Varner, X, Wan, B Q, Wang, J K, Wang, K, Wang, L L, Wang, L S, Wang, P, Wang, P L, Wang, Q, Wang, S G, Wang, X D, Wang, X L, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z Y, Wang, D H, Wei, S P, Wen, U, Wiedner, L H, Wu, N, Wu, W, Wu, Y M, Wu, Z, Wu, Z J, Xiao, Y G, Xie, G F, Xu, G M, Xu, H, Xu, Min, Xu, Ming, Xu, X P, Xu, Y, Xu, Z Z, Xu, Z, Xue, L, Yan, W B, Yan, Y H, Yan, H X, Yang, M, Yang, P, Yang, S M, Yang, Y X, Yang, M, Ye, M H, Ye, B X, Yu, C X, Yu, L, Yu, C Z, Yuan, Y, Yuan, Y, Zeng, B X, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, L, Zhang, S H, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Z P, Zhang, C, Zhao, H S, Zhao, Jiawei, Zhao, Jingwei, Zhao, Lei, Zhao, Ling, Zhao, M G, Zhao, Q, Zhao, S J, Zhao, T C, Zhao, X H, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, Y H, Zheng, Z P, Zheng, B, Zhong, J, Zhong, L, Zhou, Z L, Zhou, C, Zhu, K, Zhu, K J, Zhu, Q M, Zhu, X W, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, B S, Zou, J H, Zou, J X, Zuo, and P, Zweber
Abstract: We present measurements of the charmonium state h(c)(1P(1)) made with 106x10(6) psi' events collected by BESIII at BEPCII. Clear signals are observed for psi'--pi0 h(c) with and without the subsequent radiative decay h(c)--gamma eta(c). First measurements of the absolute branching ratios B(psi'--pi0 h(c)) = (8.4+/-1.3+/-1.0) x 10(-4) and B(h(c)--gamma eta(c)) = (54.3+/-6.7+/-5.2)% are presented. A statistics-limited determination of the previously unmeasured h(c) width leads to an upper limit Gamma(h(c))1.44 MeV (90% confidence). Measurements of M(h(c)) = 3525.40+/-0.13+/-0.18 MeV/c2 and B(psi'--pi0 h(c)) x B(h(c)--gamma eta(c)) = (4.58+/-0.40+/-0.50) x 10(-4) are consistent with previous results.
Published: 2010

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources

Refine your results

19 results on '"X. H. Zhao"'

1. Observation ofη′→π+π−π+π−andη′→π+π−π0π0

2. Observation of a Charged(DD¯)±Mass Peak ine+e−→πDD¯ats=4.26 GeV

3. Observation of a Charged Charmoniumlike StructureZc(4020)and Search for theZc(3900)ine+e−→π+π−hc

4. Observation of a Charged Charmoniumlike Structure ine+e−→π+π−J/ψats=4.26 GeV

5. Observation of Two NewN*Resonances in the Decayψ(3686)→pp¯π0

6. First Observation of theM1Transitionψ(3686)→γηc(2S)

7. Observation of two new N* resonances in the decay ψ(3686)→ppπ0

8. Measurements of the Mass and Width of theηcUsing the Decayψ(3686)→γηc

9. First Observation ofη(1405)Decays intof0(980)π0

10. Evidence for the direct two-photon transition from ψ(3686) to J/ψ

11. Spin-Parity Analysis ofpp¯Mass Threshold Structure inJ/ψandψ(3686)Radiative Decays

12. ηπ+π−Resonant Structure around1.8 GeV/c2andη(1405)inJ/ψ→ωηπ+π−

13. Observation ofχc1Decays into Vector Meson Pairsϕϕ,ωω, andωϕ

14. ηπ+ π- resonant structure around 1.8 GeV/c(2) and η(1405) in J/ψ → ωηπ+ π

15. Observation of χ(c1) decays into vector meson pairs φφ, ωω, and ωφ

16. Confirmation of theX(1835)and Observation of the ResonancesX(2120)andX(2370)inJ/ψ→γπ+π−η′

17. Evidence forψ′Decays intoγπ0andγη

18. Measurements ofhc(P11)inψ′Decays

19. Measurements of h(c)(1P(1)) in psi' decays

Catalog

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Database

19 results on '"X. H. Zhao"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources