Regular Article – Theoretical Physics
Toward charged structure under a reflection mechanism
School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China
2 Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, 730000, Lanzhou, China
3 Tokyo Kasei University, 1-18-1 Kaga, 173-8602, Itabashi, Tokyo, Japan
Accepted: 13 January 2021
Published online: 19 January 2021
Very recently, the BESIII Collaboration reported a charged hidden-charm structure with strangeness in the recoil mass of of a process or , which is named as . The newly observed charged structure can be treated as a partner structure with strangeness of well-known reported in a process . In this work, we propose a reflection picture to understand the nature of . By performing a combined analysis for the line shape of the recoil mass distribution of at five energy points GeV, we find that the can be explained as a reflection structure of charmed-strange meson , which is produced from the open-charm decay of Y(4660) with a meson. Furthermore, we predicted the angular distribution of final state in process based on our proposed reaction mechanism, which may be an essential criterion to test the non-resonant nature of further.
© The Author(s) 2021
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