Zhiqing Liu's Homepage

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Dr. Zhiqing Liu (劉 智青)

E-mails: zqliu(AT)ihep.ac.cn & liuz(AT)uni-mainz.de

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

(中国科学院高能物理研究所)
19B YuquanLu, Shijingshan District,
Beijing, 100049
 
Field: HEP experiment

          (影) 特 希格斯 教授
          Erice, Sicily Island, Italy (June 2012).
          埃里切,西西里岛,意大利。

Research Career

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

I am a Marie Curie Fellow (IIF) hosted at Mainz University. This fellowship is funded by the European Union under 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.

Publications:

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

(BESIII Collaboration) Zhiqing Liu et al., Phys. Rev. Lett. 112092001 (2014). [contact author]


7.  发现Zc(3900)——一个带电类粲偶数共振结构。

Observation of a charged charmonium-like state Zc(3900) [in Chinese]

刘智青,沈成平,苑长征 《物理》2013, 42 (10): 6。   Zhiqing LIU, Chengping SHEN and Changzheng YUAN, Physics  2013, 42, (10): 6.


(**).  Reflection of Zc(3900): Nature,  PRL ViewPoint,  Wired Science, WikipediaAPS Highlight of 2013


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). [contact 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). [contact 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) [contact 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

1. 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.