https://doi.org/10.1140/epjc/s10052-012-1986-1
Regular Article - Theoretical Physics
The open-charm radiative and pionic decays of molecular charmonium Y(4274)
1
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China
2
Nuclear Theory Group, Institute of Modern Physics of CAS, Lanzhou, 730000, China
3
School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
* e-mail: junhe@impcas.ac.cn
Received:
14
February
2012
Revised:
29
March
2012
Published online:
26
April
2012
In this work, we investigate the decay widths and the line shapes of the open-charm radiative and pionic decays of Y(4274) with the 
molecular charmonium assignment. Our calculation indicates that the decay widths of 
and 
can reach up to 0.05 keV and 0.75 keV, respectively. In addition, the result of the line shape of the photon spectrum of 
shows that there exists a very sharp peak near the large end point of photon energy. The line shape of the pion spectrum of 
is similar to that of the pion spectrum of , where we also find a very sharp peak near the large end point of pion energy. According to our calculation, we suggest further experiments to carry out the search for the open-charm radiative and pionic decays of Y(4274).
© Springer-Verlag / Società Italiana di Fisica, 2012
