https://doi.org/10.1140/epjc/s10052-020-8032-5
Regular Article - Theoretical Physics
Quark structure of the 
and X(4274) resonances and their strong and radiative decays
1
Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, CT, 06520-8120, USA
2
Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), 40014, Jyvaskyla, Finland
3
INFN, Sezione di Genova, Via Dodecaneso 33, 16146, Genoa, Italy
4
Institut für Kernphysik, Jülich Center for Hadron Physics and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425, Jülich, Germany
5
Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
* e-mail: jacopo.j.ferretti@jyu.fi
** e-mail: m.anwar@fz-juelich.de
Received:
5
March
2020
Accepted:
8
May
2020
Published online:
24
May
2020
We calculate the masses of states with threshold corrections in a coupled-channel model. The model was recently applied to the description of the properties of 
and 
multiplets (Ferretti and Santopinto in Phys Lett B 789:550, 2019]. We also compute the open-charm strong decay widths of the states and their radiative transitions. According to our predictions, the states should be dominated by the charmonium core, but they may also show small meson-meson components. The X(4274) is interpreted as a 
state. More information on the other members of the multiplet, as well as a more rigorous analysis of the X(4274)’s decay modes, are needed to provide further indications on the quark structure of the previous resonance.
© The Author(s), 2020
