https://doi.org/10.1140/epjc/s10052-015-3264-5
Regular Article - Theoretical Physics
Study on radiative decays of 
and 
into 
by means of LFQM
1
School of Science, Tianjin University, Tianjin, 300072, China
2
School of Physics, Nankai University, Tianjin, 300071, China
* e-mail: khw020056@hotmail.com
Received:
9
November
2014
Accepted:
30
December
2014
Published online:
24
January
2015
The observed resonance peak around 2.86 GeV has been carefully reexamined by the LHCb Collaboration and it is found that under the peak there reside two states, 
and 
, which are considered as 
and 
with slightly different masses and total widths. Thus, the earlier assumption that the resonance was a 
state should be reconsidered. We suggest to measure the partial widths of radiative decays of , , and to confirm their quantum numbers. We would consider as 
or a pure 
state, or their mixture and, respectively, calculate the corresponding branching ratios as well as those of and . A future precise measurement would provide us information to help identifying the structures of those resonances.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
