https://doi.org/10.1140/epjc/s10052-018-5640-4
Regular Article - Theoretical Physics
Testing the doubly charged charm–strange tetraquarks
1
Department of Physics, Kocaeli University, 41380, Izmit, Turkey
2
Institute for Physical Problems, Baku State University, 1148, Baku, Azerbaijan
3
Department of Physics, Doǧuş University, Acibadem-Kadiköy, 34722, Istanbul, Turkey
4
School of Physics, Institute for Research in Fundamental Sciences (IPM), P. O. Box 19395-5531, Tehran, Iran
* e-mail: azizi.hep.ph@gmail.com
Received:
5
December
2017
Accepted:
10
February
2018
Published online:
19
February
2018
The spectroscopic parameters and decay channels of the doubly charged scalar, pseudoscalar and axial-vector charm–strange tetraquarks 
are explored within framework of the QCD sum rule method. The masses and current couplings of these diquark–antidiquark states are calculated by means of two-point correlation functions and taking into account the vacuum condensates up to eight dimensions. To compute the strong couplings of 
states with 
and K mesons we use QCD light-cone sum rules and evaluate width of their S- and P-wave decays to a pair of negatively charged conventional mesons: For the scalar state 
, for the pseudoscalar state 
and for the axial-vector state 
decays are investigated. Obtained predictions for the spectroscopic parameters and decay widths of the tetraquarks may be useful for experimental investigations of the doubly charged exotic hadrons.
© The Author(s), 2018
