Year: 2015
Type: article
Abstract: We report a measurement of the branching fraction for $\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c1}$ and search for the transition $\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c2}$ based on $2.92\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ data accumulated at $\sqrt{s}=3.773\text{ }\text{ }\mathrm{GeV}$ with the BESIII detector at the BEPCII collider. We measure $\mathcal{B}(\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c1})=(2.48\ifmmode\pm\else\textpm\fi{}0.15\ifmmode\pm\else\textpm\fi{}0.23)\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}3}$, which is the most precise measurement to date. The upper limit on the branching fraction of $\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c2}$ at a 90% confidence level is $\mathcal{B}(\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c2})<0.64\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}3}$. The corresponding partial widths are $\mathrm{\ensuremath{\Gamma}}(\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c1})=(67.5\ifmmode\pm\else\textpm\fi{}4.1\ifmmode\pm\else\textpm\fi{}6.7)\text{ }\mathrm{keV}$ and $\mathrm{\ensuremath{\Gamma}}(\ensuremath{\psi}(3770)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{c2})<17.4\text{ }\mathrm{keV}$.
Authors: M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, M. Bertani, D. Bettoni, J. M. Bian, F. Bianchi, E. Boger, O. Bondarenko, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, P. F. Duan, J. Z. Fan, J. Fang, S. S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao, X. Y. Gao, Y. Gao, Z. Gao, I. Garzia, 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. Guo, Y. P. Guo, Z. Haddadi, A. Hafner, S. Han, Y. L. Han, X. Q. Hao, F. A. Harris, K. L. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, X. T. Huang, Y. Huang, T. Hussain, 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, A. Julin, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, R. Kliemt, B. Kloss, O. B. Kolcu, B. Kopf, M. Kornicer, W. Kühn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, C. Leng, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, Jin Li, K. Li, K. Li, Lei Li, P. R. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. M. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, J. Y. Liu, K. Liu, K. Y. Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, X. X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, H. J. Lu, J. G. Lu, R. Q. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. N. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, S. Marcello, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Niu, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, R. Poling, Y. N. Pu, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, N. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, H. L. Ren, M. Ripka, G. Rong, X. D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, W. M. Song, X. Y. Song, S. Sosio, S. Spataro, 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, M. Tiemens, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, 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, T. Weber, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, U. Wiedner, M. Wolke, L. H. 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, 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, J. H. Yin, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. H. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Y. T. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, S. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, L. Zotti, B. S. Zou, J. H. Zou
Institutions: Institute of High Energy Physics, Siberian Branch of the Russian Academy of Sciences, Budker Institute of Nuclear Physics, Carnegie Mellon University, Ruhr University Bochum, University of Rochester, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin, University of Science and Technology of China, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Peking University, Indiana University Bloomington, Indiana University, Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, University of Minnesota, Joint Institute for Nuclear Research, University of Groningen, Wuhan University, Istanbul Aydın University, Doğuş University, Beihang University, Nanjing University, Lanzhou University, Huangshan University, Shanghai Jiao Tong University, Helmholtz Institute Mainz, Johannes Gutenberg University Mainz, Liaoning University, Nankai University, Zhengzhou University, Tsinghua University, Università degli Studi del Piemonte Orientale “Amedeo Avogadro”, GSI Helmholtz Centre for Heavy Ion Research, Guangxi University, Nanjing Normal University, Henan Normal University, University of Hawaiʻi at Mānoa, University of Hawaii System, Central China Normal University, Shandong University, University of the Punjab, Uppsala University, Justus-Liebig-Universität Gießen, Seoul National University, Hangzhou Normal University, Beijing Institute of Petrochemical Technology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Sun Yat-sen University, Sichuan University, Guangxi Normal University, Shanxi University, Henan University of Science and Technology, Hunan University, Zhejiang University, COMSATS University Islamabad, Lahore Campus, Istituto Nazionale di Fisica Nucleare, University of Perugia, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, University of Ferrara, Bursa Uludağ Üni̇versi̇tesi̇, Soochow University, China Center of Advanced Science and Technology, University of South China
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, Strong, National Research Foundation, Deutsche Forschungsgemeinschaft, Rijksuniversiteit Groningen, National Natural Science Foundation of China, Russian Foundation for Basic Research, Chinese Academy of Sciences, National Research Foundation of Korea, Istituto Nazionale di Fisica Nucleare, Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of High Energy Physics
Awards: G1114156505, G1272654690, BEPCII/BESIII重粲结构精细扫描和QCD实验研究, G1612394202, G1652990914, G1784194674, G222768804, G3083249193, G3089166445, 粲偶素与类粲偶素的实验研究, G40748299, THEORETICAL AND EXPERIMENTAL HIGH ENERGY PHYSICS, RESEARCH IN HIGH ENERGY PHYSICS, G4695222216, UNDERSTANDING QCD IN THE LIGHT MESON SECTOR (WITH EMPHASIS ON MAPPING GLUONIC EXCITATIONS)..., RESEARCH IN HIGH ENERGY PHYSICS, G5402569047, EXPERIMENTAL AND THEORETICAL HIGH ENERGY PHYSICS, G568990336, G5907409172, G5951996050, G6002008181, GOALI/Collaborative Research: Scheduling Methodologies for Electronics and Hardware Manufacturing, 北京谱仪-III DD-bar对产生阈上共振态非-DD-bar衰变的实验研究, RESEARCH IN EXPERIMENTAL AND THEORETICAL HIGH ENERGY PHYSICS, G7113737004, G7180693554, G7451531393, G7663785162, G7924189137, G8311218318, G8332380056, G868043634, UNDERSTANDING QCD IN THE LIGHT MESON SECTOR (WITH EXPHASIS ON MAPPING GLUONIC EXCITATIONS) USING PION AND PHOTON PROBES, 北京谱仪III实验上的粲介子弱衰变研究
OpenAlex ID: W208982467