https://doi.org/10.1140/epjc/s10052-019-6708-5
Regular Article - Theoretical Physics
Strong decays of the Y(4660) as a vector tetraquark state in solid quark-hadron duality
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
* e-mail: zgwang@aliyun.com
Received:
14
January
2019
Accepted:
19
February
2019
Published online:
1
March
2019
In this article, we choose the 
type tetraquark current to study the hadronic coupling constants in the strong decays 
, 
, 
, 
, 
, 
, 
, 
, 
with the QCD sum rules based on solid quark-hadron quality. The predicted width 
is in excellent agreement with the experimental data 
from the Belle collaboration, which supports assigning the Y(4660) to be the type tetraquark state with 
. In calculations, we observe that the hadronic coupling constants 
, which is consistent with the observation of the Y(4660) in the 
mass spectrum, and favors the 
molecule assignment. It is important to search for the process 
to diagnose the nature of the Y(4660), as the decay is greatly suppressed.
© The Author(s), 2019
