https://doi.org/10.1140/epjc/s10052-015-3753-6
Regular Article - Theoretical Physics
Decay widths of the spin-2 partners of the X(3872)
1
Instituto de Física Corpuscular (IFIC), Centro Mixto CSIC-Universidad de Valencia, Institutos de Investigación de Paterna, Aptd. 22085, 46071, Valencia, Spain
2
State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China
3
Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
4
Institut de Physique Nucléaire, Université Paris-Sud, IN2P3/CNRS, 91406, Orsay Cedex, France
* e-mail: fkguo@itp.ac.cn
Received:
27
August
2015
Accepted:
22
October
2015
Published online:
24
November
2015
We consider the X(3872) resonance as a 
hadronic molecule. According to heavy quark spin symmetry, there will exist a partner with quantum numbers 
, 
, which would be a 
loosely bound state. The is expected to decay dominantly into 
, and 
in d-wave. In this work, we calculate the decay widths of the resonance into the above channels, as well as those of its bottom partner, 
, the mass of which comes from assuming heavy flavor symmetry for the contact terms. We find partial widths of the and of the order of a few MeV. Finally, we also study the radiative 
and 
decays. These decay modes are more sensitive to the long-distance structure of the resonances and to the 
or 
final state interaction.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
