Zhiqing Liu's Homepage

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Prof. Dr. Zhiqing Liu (刘智青)

Emails: liuz(AT)uni-mainz.de

(山东大学 青岛校区)
Research Center for Particle Physics & Technology
Binhai Road 72, Jimo district
266237 Qingdao, China

(约翰内斯 古藤伯格 大学)
Institut für Kernphysik
Joh-Joachim-Becher-Weg 45
55128 Mainz, Germany

19B YuquanLu, Shijingshan District,
Beijing, 100049
Field: HEP experiment

          Erice, Sicily Island, Italy (June 2012).

Research Project

I am a legal member of the BESIII Collaboration. BESIII is a symmetry e+e- collider experiment covering c.m energy 2 GeV to 4.6 GeV, and has accumulated world's largest charmonium/charmoniumlike data sample. I am studying conventional charmonium decays, and hunting new XYZ particles at BESIII. In 2013, I have discovered a charged charmoniumlike state Zc(3900), which might be the first four quark state with solid evidence. In addition, I also have a wide range study on X(3872), Y(4260)...

Marie Curie Fellow (European Commission)

I am a Marie Curie Fellow (IIF) hosted at Mainz University. This fellowship is funded by the European Commission under the Seventh Framework Programme (FP7).

I am a legal member of the Belle Collaboration. Belle is an asymmetry e+e- collider experiment running @ Y(nS) (n=1,2,...,5). Belle has accumulated  ~1000fb^-1 data, which is world's largest data sample. I am searching for extoic states from Initial-State-Radiation (ISR) process and two-photon production. I give the first measurement for gamma gamma to vector meson pairs cross section. Using Belle's full data set, I found a charged charmoniumlike state Z(3900) in Y(4260) decays. 

I joined the PANDA Collaboration in 2013 and extended my hadron spectroscopy program in an anti-proton proton experiment.


13. Study of e+eγωJ/ψ and Observation of X(3872)ωJ/ψ
 (BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett. 122, 232002 (2019). (corresponding author)

12. Precise measurement of the e+eπ+πJ/ψ cross section at center-of-mass energies from 3.77 to 4.60 GeV

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett. 118, 092001 (2017).  (corresponding author)

11. BESIII实验发现新粒子X(3823)


10. Observation of the ψ(1^3D_2) state in e+eπ+πγχc1 at BESIII

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett. 115, 011803 (2015). (corresponding author)

9. BESIII实验首次观测到Y(4260)→γX(3872)辐射跃迁。

刘智青 等,《物理》2014, 43 (03): 199-201。

8. Observation of e+eγX(3872) at BESIII

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett. 112, 092001 (2014). [corresponding author]

7.  发现Zc(3900)——一个带电类粲偶数共振结构。

刘智青,沈成平,苑长征 《物理》2013, 42 (10): 6.

(**).  Report of Zc(3900): Nature,  PRL ViewPoint,  Wired ScienceAPS Highlight of 2013, SPIEGEL Online

6.  Study of $e^+ e^- \to π^+ π^- J/ψ$ and Observation of a Charged Charmonium-like State at Belle

Z. Q. Liu et al., (Belle Collaboration), Phys. Rev. Lett 110, 252002 (2013).  (SPIRE Record)

5.  Observation of a charged charmoniumlike structure in e+e- \to \pi+\pi-J/psi at \sqrt{s}=4.26 GeV

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett 110, 252001 (2013). [corresponding author](SPIRE Record)

4. Observation of e^+e^- ->\eta J/\psi at center-of-mass energy \sqrt{s}=4.009 GeV  

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. D 86, 071101(R) (2012). [corresponding author]

3. Observation of New Resonant Structures in \gamma\gamma->\omega\phi, \phi\phi, and \omega\omega  

Z. Q. Liu et al., (Belle Collaboration), Phys. Rev. Lett. 108, 232001 (2012).

2. Higher-order multipole amplitude measurement in \psi'->\gamma\chi_c2   

(BESIII Collaboration) Zhiqing Liu et al.,  Phys. Rev. D 84, 092006 (2011) [corresponding author]

1. Combined fit to BABAR and Belle data on e^+e^- ->\pi^+\pi^-\psi(2S)

Z. Q. Liu, X. S. Qin and C. Z. Yuan,  Phys. Rev. D 78, 014032 (2008).

Conference Proceedings:

1. "Observation of Zc(3900) both by BESIII and Belle"  

Zhiqing Liu - Presented at Charm 2013 International Conference at Manchester, UK (Aug. 2013)

Travel & Activities

a). 23th June to 2nd July, 2012, Erice, Sicily.  It's an interesting travel.

Take a photo with Prof. Peter Ware HIGGS, the Nobel Prize Winner for Physics in 2013 (2013年诺贝尔物理学奖得主).

I was awarded “Chien Shiung WU” Diploma by Prof. Gerardus ’t Hooft and Prof. Antonino Zichichi.

b). I was invited to the 66th Lindau Nobel Laureate Meeting in Lindau, Germany (June 26th - July 1st, 2016).