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 _cin 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 _cat the BESIII experiment. The charged Z _c(4020) ^±is the second observed Z _cstate following Z _c(3900), while the Z _c(4020) ⁰is the rst observed neutral Z _cstate. 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

References

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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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1.
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

Corresponding author:Chun-Xu Yu,

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

Received Date:2015-04-13
Available Online:2016-01-20

Fund Project: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

Abstract:We review the recent BESIII measurement of e⁺e^-→ππh_cin 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 ofπh_cat the BESIII experiment. The charged Z_c(4020)^±is the second observed Z_cstate following Z_c(3900), while the Z_c(4020)⁰is the rst observed neutral Z_cstate. 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.