On the decays of d* in a constituent chiral quark model

  • After summarizing the experimental results and present status of the d*(2380) observed at WASA@COSY, two "extreme" models for explaining its structure, a compact hexaquark dominated model and a loose △△'-D12π model, are briefly discussed, especially the former. By comparing their results with the corresponding data, the differences of the two models are addressed. As a remedy for the latter model, a mixing model and its result are also quoted for a comparison. It is shown that the compact hexaquark dominated structure might be more promising. However, the mixing model is also a possible structure, and more accurate Γd*NNπ data are needed for confirmation.
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Yubing Dong, Fei Huang, Pengnian Shen and Zongye Zhang. On the decays of d* in a constituent chiral quark model[J]. Chinese Physics C, 2017, 41(10): 101001. doi: 10.1088/1674-1137/41/10/101001
Yubing Dong, Fei Huang, Pengnian Shen and Zongye Zhang. On the decays of d* in a constituent chiral quark model[J]. Chinese Physics C, 2017, 41(10): 101001.  doi: 10.1088/1674-1137/41/10/101001 shu
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Received: 2017-07-08
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    Supported by National Natural Science Foundation of China (11475192, 11475181, 11521505, 11565007, 11635009), fund provided to the Sino-German CRC 110 Symmetries and the Emergence of Structure in QCD project by NSFC (11621131001), the IHEP Innovation Fund (Y4545190Y2) and F. Huang is grateful for the support of the Youth Innovation Promotion Association of CAS (2015358)

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On the decays of d* in a constituent chiral quark model

    Corresponding author: Yubing Dong,
    Corresponding author: Fei Huang,
    Corresponding author: Pengnian Shen,
    Corresponding author: Zongye Zhang,
  • 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 2. Theoretical Physics Center for Science Facilities(TPCSF), CAS, Beijing 100049, China
  • 3. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 101408, China
  • 4.  School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 101408, China
  • 5. College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
Fund Project:  Supported by National Natural Science Foundation of China (11475192, 11475181, 11521505, 11565007, 11635009), fund provided to the Sino-German CRC 110 Symmetries and the Emergence of Structure in QCD project by NSFC (11621131001), the IHEP Innovation Fund (Y4545190Y2) and F. Huang is grateful for the support of the Youth Innovation Promotion Association of CAS (2015358)

Abstract: After summarizing the experimental results and present status of the d*(2380) observed at WASA@COSY, two "extreme" models for explaining its structure, a compact hexaquark dominated model and a loose △△'-D12π model, are briefly discussed, especially the former. By comparing their results with the corresponding data, the differences of the two models are addressed. As a remedy for the latter model, a mixing model and its result are also quoted for a comparison. It is shown that the compact hexaquark dominated structure might be more promising. However, the mixing model is also a possible structure, and more accurate Γd*NNπ data are needed for confirmation.

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