| Experimental review of e~+e~-→ππh_c |
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| 摘 要： | We review the recent BESIII measurement of e~+e~-→ππh_c in which its line shape is studied between the center-of-mass energies of 3.9 to 4.42 Ge V and an iso-vector charmonium-like state Z_c(4020) is observed in the invariant mass of πhc at the BESIII experiment. The charged Z_c(4020)~± is the second observed Z_c state following Z_c(3900), while the Z_c(4020)~0 is the first observed neutral Z_c state. The line shape of σ(e~+e~-→ππh_c) is also reanalyzed in view of searching for the Y state and the existence of the Y(4220) state is confirmed and compared with the previous work of the BESIII experiment.
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| 收稿时间： | 2016-01-20 |
Experimental review of e+e-→ππhc |
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| Qing-Ping Ji,Yu-Ping Guo,Ai-Qiang Guo,Chun-Xu Yu,Zhi-Yong Wang. Experimental review of e+e-→ππhc[J]. Chinese Physics C, 2016, 40(1): 012001-012001. DOI: 10.1088/1674-1137/40/1/012001 |
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| Authors: | Qing-Ping Ji Yu-Ping Guo Ai-Qiang Guo Chun-Xu Yu Zhi-Yong Wang |
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| Affiliation: | 1. Department of Physics, Nankai University, Tianjin 300071, China2. Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany3. Institute of High Energy Physics, CAS, Beijing 100049, China |
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| Abstract: | We review the recent BESIII measurement of e+e-→ππhc in which its line shape is studied between the center-of-mass energies of 3.9 to 4.42 GeV and an iso-vector charmonium-like state Zc(4020) is observed in the invariant mass of πhc at the BESIII experiment. The charged Zc(4020)± is the second observed Zc state following Zc(3900), while the Zc(4020)0 is the rst observed neutral Zc state. The line shape of (e+e-→ππhc) is also re-analyzed in view of searching for the Y state and the existence of the Y(4220) state is con rmed and compared with the previous work of the BESIII experiment. |
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| Keywords: | charmonium exotic state isospin triplet |
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