Experimental review of e+e-&rarr;&pi;&pi;hc

Qing-Ping Ji; Yu-Ping Guo; Ai-Qiang Guo; Chun-Xu Yu; Zhi-Yong Wang

doi:10.1088/1674-1137/40/1/012001

Chinese Physics C> 2016, Vol. 40> Issue(1) : 012001 DOI: 10.1088/1674-1137/40/1/012001

Experimental review of e⁺e^-→ππh_c

1.
Department of Physics, Nankai University, Tianjin 300071, China
2.
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
3.
Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
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 GeV and an iso-vector charmonium-like state Z_c(4020) is observed in the invariant mass of πh_c 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 rst observed neutral Z_c state. The line shape of (e⁺e^-→ππh_c) 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.
- charmonium ,
- exotic state ,
- isospin triplet

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Qing-Ping Ji, Yu-Ping Guo, Ai-Qiang Guo, Chun-Xu Yu and Zhi-Yong Wang. Experimental review of e⁺e^-→ππh_c[J]. Chinese Physics C, 2016, 40(1): 012001. doi: 10.1088/1674-1137/40/1/012001

Qing-Ping Ji, Yu-Ping Guo, Ai-Qiang Guo, Chun-Xu Yu and Zhi-Yong Wang. Experimental review of e⁺e^-→ππh_c[J]. Chinese Physics C, 2016, 40(1): 012001. doi: 10.1088/1674-1137/40/1/012001 shu

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Received: 2015-04-13

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Supported by Joint Large-Scale Scienti c Facility Funds of the NSFC and CAS under Contracts No. U1332201, and National Natural Science Foundation of China (NSFC) under Contracts No. 11475207

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental review of e⁺e^-→ππh_c

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Experimental review of e⁺e^-→ππh_c

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