https://doi.org/10.1140/epjc/s10052-015-3388-7
Regular Article - Theoretical Physics
Determination of the mixing angle between new charmonium states
1
Physics Department, Middle East Technical University, 06800, Ankara, Turkey
2
Institute of Physics, Baku, Azerbaijan
* e-mail: savci@metu.edu.tr
Received:
12
February
2015
Accepted:
31
March
2015
Published online:
28
April
2015
Using the pictures for as a mixture of charmonium and molecular
states;
as a mixture of
and
states, and
as a mixture of the tetra-quark state with charmonium states, the corresponding mixing angles are estimated within the QCD sum rules. We find that our predictions for the mixing angles of the
,
, and
states are considerably smaller compared to work in which the mixing angles are estimated from the condition in reproducing the mass of these states. Our conclusion is that the considered pictures for the
,
, and
states are not successful in describing these states.
© SIF and Springer-Verlag Berlin Heidelberg, 2015