/ hep-ex arXiv:1406.2486


Study of e$^+$e$^-$ $\rightarrow \text{p} \overline{\text{p}}\pi^0$ in the Vicinity of the $\psi\text{(3770)}$


Ablikim, M. (Beijing, Inst. High Energy Phys.) ; Achasov, M.N. (Novosibirsk State U.) ; Ai, X.C. (Beijing, Inst. High Energy Phys.) ; Albayrak, O. (Carnegie Mellon U.) ; Albrecht, M. (Ruhr U., Bochum) ; Ambrose, D.J. (Rochester U.) ; An, F.F. (Beijing, Inst. High Energy Phys.) ; An, Q. (Hefei, CUST) ; Bai, J.Z. (Beijing, Inst. High Energy Phys.) ; Ferroli, R.Baldini (Frascati) ; Ban, Y. (Peking U.) ; Bennett, J.V. (Indiana U.) ; Bertani, M. (Frascati) ; Bian, J.M. (Minnesota U.) ; Boger, E. (Moscow, MIPT) ; Bondarenko, O. (Groningen, KVI) ; Boyko, I. (Dubna, JINR) ; Braun, S. (Giessen U.) ; Briere, R.A. (Carnegie Mellon U.) ; Cai, H. (Wuhan U.) ; Cai, X. (Beijing, Inst. High Energy Phys.) ; Cakir, O. (Ankara U.) ; Calcaterra, A. (Frascati) ; Cao, G.F. (Beijing, Inst. High Energy Phys.) ; Cetin, S.A. (Dogus U., Kadikoy) ; Chang, J.F. (Beijing, Inst. High Energy Phys.) ; Chelkov, G. (Moscow, MIPT) ; Chen, G. (Beijing, Inst. High Energy Phys.) ; Chen, H.S. (Beijing, Inst. High Energy Phys.) ; Chen, J.C. (Beijing, Inst. High Energy Phys.) ; Chen, M.L. (Beijing, Inst. High Energy Phys.) ; Chen, S.J. (Nanjing U., Dept. Astron.) ; Chen, X. (Beijing, Inst. High Energy Phys.) ; Chen, X.R. (Lanzhou U.) ; Chen, Y.B. (Beijing, Inst. High Energy Phys.) ; Cheng, H.P. (Huangshan U.) ; Chu, X.K. (Peking U.) ; Chu, Y.P. (Beijing, Inst. High Energy Phys.) ; Cronin-Hennessy, D. (Minnesota U.) ; Dai, H.L. (Beijing, Inst. High Energy Phys.) ; Dai, J.P. (Beijing, Inst. High Energy Phys.) ; Dedovich, D. (Dubna, JINR) ; Deng, Z.Y. (Beijing, Inst. High Energy Phys.) ; Denig, A. (Mainz U., Inst. Phys.) ; Denysenko, I. (Dubna, JINR) ; Destefanis, M. (INFN, Turin) ; Ding, W.M. (Shandong U.) ; Ding, Y. (Liaoning U.) ; Dong, C. (Nankai U.) ; Dong, J. (Beijing, Inst. High Energy Phys.) ; Dong, L.Y. (Beijing, Inst. High Energy Phys.) ; Dong, M.Y. (Beijing, Inst. High Energy Phys.) ; Du, S.X. (Zhengzhou U.) ; Fan, J.Z. (Tsinghua U., Beijing) ; Fang, J. (Beijing, Inst. High Energy Phys.) ; Fang, S.S. (Beijing, Inst. High Energy Phys.) ; Fang, Y. (Beijing, Inst. High Energy Phys.) ; Fava, L. (INFN, Turin) ; Feng, C.Q. (Hefei, CUST) ; Fu, C.D. (Beijing, Inst. High Energy Phys.) ; Fuks, O. (Moscow, MIPT) ; Gao, Q. (Beijing, Inst. High Energy Phys.) ; Gao, Y. (Tsinghua U., Beijing) ; Geng, C. (Hefei, CUST) ; Goetzen, K. (Darmstadt, GSI) ; Gong, W.X. (Beijing, Inst. High Energy Phys.) ; Gradl, W. (Mainz U., Inst. Phys.) ; Greco, M. (INFN, Turin) ; Gu, M.H. (Beijing, Inst. High Energy Phys.) ; Gu, Y.T. (Guangxi U.) ; Guan, Y.H. (Beijing, Inst. High Energy Phys.) ; Guo, A.Q. (Nankai U.) ; Guo, L.B. (Nanjing Normal U.) ; Guo, T. (Nanjing Normal U.) ; Guo, Y.P. (Mainz U., Inst. Phys.) ; Han, Y.L. (Beijing, Inst. High Energy Phys.) ; Harris, F.A. (Hawaii U.) ; He, K.L. (Beijing, Inst. High Energy Phys.) ; He, M. (Beijing, Inst. High Energy Phys.) ; He, Z.Y. (Nankai U.) ; Held, T. (Ruhr U., Bochum) ; Heng, Y.K. (Beijing, Inst. High Energy Phys.) ; Hou, Z.L. (Beijing, Inst. High Energy Phys.) ; Hu, C. (Nanjing Normal U.) ; Hu, H.M. (Beijing, Inst. High Energy Phys.) ; Hu, J.F. (Giessen U.) ; Hu, T. (Beijing, Inst. High Energy Phys.) ; Huang, G.M. (Hua-Zhong Normal U.) ; Huang, G.S. (Hefei, CUST) ; Huang, H.P. (Wuhan U.) ; Huang, J.S. (Henan Normal U.) ; Huang, L. (Beijing, Inst. High Energy Phys.) ; Huang, X.T. (Shandong U.) ; Huang, Y. (Nanjing U., Dept. Astron.) ; Hussain, T. (Punjab U., CHEP) ; Ji, C.S. (Hefei, CUST) ; Ji, Q. (Beijing, Inst. High Energy Phys.) ; Ji, Q.P. (Nankai U.) ; Ji, X.B. (Beijing, Inst. High Energy Phys.) ; Ji, X.L. (Beijing, Inst. High Energy Phys.) ; Jiang, L.L. (Beijing, Inst. High Energy Phys.) ; Jiang, L.W. (Wuhan U.) ; Jiang, X.S. (Beijing, Inst. High Energy Phys.) ; Jiao, J.B. (Shandong U.) ; Jiao, Z. (Huangshan U.) ; Jin, D.P. (Beijing, Inst. High Energy Phys.) ; Jin, S. (Beijing, Inst. High Energy Phys.) ; Johansson, T. (Uppsala U.) ; Kalantar-Nayestanaki, N. (Groningen, KVI) ; Kang, X.L. (Beijing, Inst. High Energy Phys.) ; Kang, X.S. (Nankai U.) ; Kavatsyuk, M. (Groningen, KVI) ; Kloss, B. (Mainz U., Inst. Phys.) ; Kopf, B. (Ruhr U., Bochum) ; Kornicer, M. (Hawaii U.) ; Kuhn, W. (Giessen U.) ; Kupsc, A. (Uppsala U.) ; Lai, W. (Beijing, Inst. High Energy Phys.) ; Lange, J.S. (Giessen U.) ; Lara, M. (Indiana U.) ; Larin, P. (Mainz U., Inst. Phys.) ; Leyhe, M. (Ruhr U., Bochum) ; Li, C.H. (Beijing, Inst. High Energy Phys.) ; Li, Cheng (Hefei, CUST) ; Li, Cui (Hefei, CUST) ; Li, D. (Hunan U.) ; Li, D.M. (Zhengzhou U.) ; Li, F. (Beijing, Inst. High Energy Phys.) ; Li, G. (Beijing, Inst. High Energy Phys.) ; Li, H.B. (Beijing, Inst. High Energy Phys.) ; Li, J.C. (Beijing, Inst. High Energy Phys.) ; Li, K. (Shandong U.) ; Li, K. (Hangzhou Normal U.) ; Li, Lei (Beijing, Inst. High Energy Phys.) ; Li, P.R. (Beijing, GUCAS) ; Li, Q.J. (Beijing, Inst. High Energy Phys.) ; Li, T. (Shandong U.) ; Li, W.D. (Beijing, Inst. High Energy Phys.) ; Li, W.G. (Beijing, Inst. High Energy Phys.) ; Li, X.L. (Shandong U.) ; Li, X.N. (Beijing, Inst. High Energy Phys.) ; Li, X.Q. (Nankai U.) ; Li, Z.B. (Zhongshan U.) ; Liang, H. (Hefei, CUST) ; Liang, Y.F. (Sichuan U., Inst. Nucl. Sci. Tech.) ; Liang, Y.T. (Giessen U.) ; Lin, D.X. (Mainz U., Inst. Phys.) ; Liu, B.J. (Beijing, Inst. High Energy Phys.) ; Liu, C.L. (Carnegie Mellon U.) ; Liu, C.X. (Beijing, Inst. High Energy Phys.) ; Liu, F.H. (Shanxi U.) ; Liu, Fang (Beijing, Inst. High Energy Phys.) ; Liu, Feng (Hua-Zhong Normal U.) ; Liu, H.B. (Guangxi U.) ; Liu, H.H. (Henan U.) ; Liu, H.M. (Beijing, Inst. High Energy Phys.) ; Liu, J. (Beijing, Inst. High Energy Phys.) ; Liu, J.P. (Wuhan U.) ; Liu, K. (Tsinghua U., Beijing) ; Liu, K.Y. (Liaoning U.) ; Liu, P.L. (Shandong U.) ; Liu, Q. (Beijing, GUCAS) ; Liu, S.B. (Hefei, CUST) ; Liu, X. (Lanzhou U.) ; Liu, Y.B. (Nankai U.) ; Liu, Z.A. (Beijing, Inst. High Energy Phys.) ; Liu, Zhiqiang (Beijing, Inst. High Energy Phys.) ; Liu, Zhiqing (Mainz U., Inst. Phys.) ; Loehner, H. (Groningen, KVI) ; Lou, X.C. (Texas U., Dallas) ; Lu, G.R. (Henan Normal U.) ; Lu, H.J. (Huangshan U.) ; Lu, H.L. (Beijing, Inst. High Energy Phys.) ; Lu, J.G. (Beijing, Inst. High Energy Phys.) ; Lu, X.R. (Beijing, GUCAS) ; Lu, Y. (Beijing, Inst. High Energy Phys.) ; Lu, Y.P. (Beijing, Inst. High Energy Phys.) ; Luo, C.L. (Nanjing Normal U.) ; Luo, M.X. (Zhejiang U.) ; Luo, T. (Hawaii U.) ; Luo, X.L. (Beijing, Inst. High Energy Phys.) ; Lv, M. (Beijing, Inst. High Energy Phys.) ; Ma, F.C. (Liaoning U.) ; Ma, H.L. (Beijing, Inst. High Energy Phys.) ; Ma, Q.M. (Beijing, Inst. High Energy Phys.) ; Ma, S. (Beijing, Inst. High Energy Phys.) ; Ma, T. (Beijing, Inst. High Energy Phys.) ; Ma, X.Y. (Beijing, Inst. High Energy Phys.) ; Maas, F.E. (Mainz U., Inst. Phys.) ; Maggiora, M. (INFN, Turin) ; Malik, Q.A. (Punjab U., CHEP) ; Mao, Y.J. (Peking U.) ; Mao, Z.P. (Beijing, Inst. High Energy Phys.) ; Messchendorp, J.G. (Groningen, KVI) ; Min, J. (Beijing, Inst. High Energy Phys.) ; Min, T.J. (Beijing, Inst. High Energy Phys.) ; Mitchell, R.E. (Indiana U.) ; Mo, X.H. (Beijing, Inst. High Energy Phys.) ; Mo, Y.J. (Hua-Zhong Normal U.) ; Moeini, H. (Groningen, KVI) ; Morales Morales, C. (Mainz U., Inst. Phys.) ; Moriya, K. (Indiana U.) ; Muchnoi, N.Yu. (Novosibirsk State U.) ; Muramatsu, H. (Minnesota U.) ; Nefedov, Y. (Dubna, JINR) ; Nikolaev, I.B. (Novosibirsk State U.) ; Ning, Z. (Beijing, Inst. High Energy Phys.) ; Nisar, S. (COMSATS, Islamabad) ; Niu, X.Y. (Beijing, Inst. High Energy Phys.) ; Olsen, S.L. (Seoul Natl. U.) ; Ouyang, Q. (Beijing, Inst. High Energy Phys.) ; Pacetti, S. (INFN, Perugia) ; Pelizaeus, M. (Ruhr U., Bochum) ; Peng, H.P. (Hefei, CUST) ; Peters, K. (Darmstadt, GSI) ; Ping, J.L. (Nanjing Normal U.) ; Ping, R.G. (Beijing, Inst. High Energy Phys.) ; Poling, R. (Minnesota U.) ; N.Q. (Wuhan U.) ; Qi, M. (Nanjing U., Dept. Astron.) ; Qian, S. (Beijing, Inst. High Energy Phys.) ; Qiao, C.F. (Beijing, GUCAS) ; Qin, L.Q. (Shandong U.) ; Qin, X.S. (Beijing, Inst. High Energy Phys.) ; Qin, Y. (Peking U.) ; Qin, Z.H. (Beijing, Inst. High Energy Phys.) ; Qiu, J.F. (Beijing, Inst. High Energy Phys.) ; Rashid, K.H. (Punjab U., CHEP) ; Redmer, C.F. (Mainz U., Inst. Phys.) ; Ripka, M. (Mainz U., Inst. Phys.) ; Rong, G. (Beijing, Inst. High Energy Phys.) ; Ruan, X.D. (Guangxi U.) ; Sarantsev, A. (St. Petersburg, INP) ; Schoenning, K. (Uppsala U.) ; Schumann, S. (Mainz U., Inst. Phys.) ; Shan, W. (Peking U.) ; Shao, M. (Hefei, CUST) ; Shen, C.P. (BeiHang U.) ; Shen, X.Y. (Beijing, Inst. High Energy Phys.) ; Sheng, H.Y. (Beijing, Inst. High Energy Phys.) ; Shepherd, M.R. (Indiana U.) ; Song, W.M. (Beijing, Inst. High Energy Phys.) ; Song, X.Y. (Beijing, Inst. High Energy Phys.) ; Spataro, S. (INFN, Turin) ; Spruck, B. (Giessen U.) ; Sun, G.X. (Beijing, Inst. High Energy Phys.) ; Sun, J.F. (Henan Normal U.) ; Sun, S.S. (Beijing, Inst. High Energy Phys.) ; Sun, Y.J. (Hefei, CUST) ; Sun, Y.Z. (Beijing, Inst. High Energy Phys.) ; Sun, Z.J. (Beijing, Inst. High Energy Phys.) ; Sun, Z.T. (Hefei, CUST) ; Tang, C.J. (Sichuan U., Inst. Nucl. Sci. Tech.) ; Tang, X. (Beijing, Inst. High Energy Phys.) ; Tapan, I. (Uludag U.) ; Thorndike, E.H. (Rochester U.) ; Toth, D. (Minnesota U.) ; Ullrich, M. (Giessen U.) ; Uman, I. (Dogus U., Kadikoy) ; Varner, G.S. (Hawaii U.) ; Wang, B. (Nankai U.) ; Wang, D. (Peking U.) ; Wang, D.Y. (Peking U.) ; Wang, K. (Beijing, Inst. High Energy Phys.) ; Wang, L.L. (Beijing, Inst. High Energy Phys.) ; Wang, L.S. (Beijing, Inst. High Energy Phys.) ; Wang, M. (Shandong U.) ; Wang, P. (Beijing, Inst. High Energy Phys.) ; Wang, P.L. (Beijing, Inst. High Energy Phys.) ; Wang, Q.J. (Beijing, Inst. High Energy Phys.) ; Wang, S.G. (Peking U.) ; Wang, W. (Beijing, Inst. High Energy Phys.) ; Wang, X.F. (Tsinghua U., Beijing) ; Wang, Y.D. (Frascati) ; Wang, Y.F. (Beijing, Inst. High Energy Phys.) ; Wang, Y.Q. (Mainz U., Inst. Phys.) ; Wang, Z. (Beijing, Inst. High Energy Phys.) ; Wang, Z.G. (Beijing, Inst. 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(Nanjing U., Dept. Astron.) ; Zhao, Y.B. (Beijing, Inst. High Energy Phys.) ; Zhao, Z.G. (Hefei, CUST) ; Zhemchugov, A. (Moscow, MIPT) ; Zheng, B. (U. South China, Hengyang) ; Zheng, J.P. (Beijing, Inst. High Energy Phys.) ; Zheng, Y.H. (Beijing, GUCAS) ; Zhong, B. (Nanjing Normal U.) ; Zhou, L. (Beijing, Inst. High Energy Phys.) ; Zhou, Li (Nankai U.) ; Zhou, X. (Wuhan U.) ; Zhou, X.K. (Beijing, GUCAS) ; Zhou, X.R. (Hefei, CUST) ; Zhou, X.Y. (Beijing, Inst. High Energy Phys.) ; Zhu, K. (Beijing, Inst. High Energy Phys.) ; Zhu, K.J. (Beijing, Inst. High Energy Phys.) ; Zhu, X.L. (Tsinghua U., Beijing) ; Zhu, Y.C. (Hefei, CUST) ; Zhu, Y.S. (Beijing, Inst. High Energy Phys.) ; Zhu, Z.A. (Beijing, Inst. High Energy Phys.) ; Zhuang, J. (Beijing, Inst. High Energy Phys.) ; Zou, B.S. (Beijing, Inst. High Energy Phys.) ; Zou, J.H. (Beijing, Inst. High Energy Phys.)

Abstract: The process $e^+e^-\rightarrow p\overline{p}\pi^0$ has been studied by analyzing data collected at $\sqrt{s}=3.773$ GeV, at $\sqrt{s}=3.650$ GeV, and during a $\psi(3770)$ line shape scan with the BESIII detector at the BEPCII collider. The Born cross section of $p \overline{p} \pi^0$ in the vicinity of the $\psi(3770)$ is measured and the Born cross section of $\psi(3770)\rightarrow p \overline{p} \pi^0$ is extracted considering interference between resonant and continuum production amplitudes. Two solutions with the same probability and a significance of 1.5$\sigma$ are found, and the Born cross section of $\psi(3770)\rightarrow p \overline{p} \pi^0$ is determined to be less than 0.22 pb at 90% confidence level and $33.8\pm1.8\pm2.1$ pb, respectively. Using the estimated cross section and a constant decay amplitude approximation, the cross section $\sigma(p\overline{p} \rightarrow \psi(3770) \pi^0)$ is calculated for the kinematic situation of the planned $\overline{\text{P}}\text{ANDA}$ experiment. The maximum cross section corresponding to the two solutions is expected to be less than $0.79$ nb at 90% confidence level and $122\pm10$ nb at a center of mass energy of 5.26 GeV.

Web-Page: http://inspirehep.net/record/1299991/files/cross_section_all_can_interfere.png; http://inspirehep.net/record/1299991/files/plot_data_3773.png; http://inspirehep.net/record/1299991/files/arXiv:1406.2486.pdf


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