https://doi.org/10.1140/epjc/s10052-021-08877-4
Regular Article – Theoretical Physics
Toward charged 
structure under a reflection mechanism
1
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
Received:
12
December
2020
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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