https://doi.org/10.1140/epjc/s10052-016-4531-9
Regular Article - Theoretical Physics
Where are 
?
Department of Physics, Southeast University, Nanjing, 210094, People’s Republic of China
* e-mail: chendy@impcas.ac.cn
Received:
1
November
2016
Accepted:
21
November
2016
Published online:
5
December
2016
In the present work, we propose Y(4140) as the 
state by studying the 
invariant mass spectrum of the 
process. In the 
invariant mass spectrum of the 
process, we find a new resonance with the mass and width to be (
) and (
) MeV, respectively, which could be a good candidate of the 
state. The theoretical investigations on the decay behaviors of the in the present work support the assignments of the Y(4140) and Y(4080) as the and states, respectively. In addition, the 
state is predicted to be a very narrow state. The results in the present work could be tested by further experiments in the LHCb and forthcoming Belle II.
© The Author(s), 2016
