https://doi.org/10.1140/epjc/s10052-018-5888-8
Regular Article - Theoretical Physics
Analysis of the structure of 
through its decays
1
Physics Department, Middle East Technical University, 06531, Ankara, Turkey
2
School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran
3
Department of Physics, Doǧuş University, Acibadem-Kadiköy, 34722, Istanbul, Turkey
4
Department of Physics, Kocaeli University, 41380, Izmit, Turkey
* e-mail: azizi.hep.ph@gmail.com
Received:
8
April
2018
Accepted:
10
May
2018
Published online:
22
May
2018
The mass and pole residue of the first orbitally and radially excited 
state as well as the ground state residue are calculated by means of the two-point QCD sum rules. Using the obtained results for the spectroscopic parameters, the strong coupling constants relevant to the decays 
and 
are calculated within the light-cone QCD sum rules and width of these decay channels are estimated. The obtained results for the mass of 
and ratio of the 
, with 
representing the orbitally excited state in channel, are in nice agreement with the experimental data of the Belle Collaboration. This allows us to conclude that the state, most probably, has negative parity.
© The Author(s), 2018
