PT Journal
AU Branz, T
   Molina, R
   Oset, E
TI Radiative decays of the Y(3940), Z(3930), and the X(4160) as dynamically generated resonances
SO Physical Review D
JI Phys. Rev. D
PY 2011
BP 114015
EP 9pp
VL 83
IS 11
DI 10.1103/PhysRevD.83.114015
LA English
AB We study the radiative decay properties of the charmoniumlike X, Y, and Z mesons generated dynamically from vector-meson-vector-meson interaction in the framework of a unitarized hidden-gauge formalism. In the present work, we calculate the one-and two-photon decay widths of the hidden-charm Y(3940), Z(3930) [or X(3915)], and X(4160) mesons in the framework of the vector-meson dominance formalism. We obtain good agreement with the experiment in case of the two-photon width of the X(3915), which we associate to the 2(+) resonance that we find at 3922 MeV. However, in view of discrepancies with a different approach that also considers the resonances as molecular states, we urge independent calculations along the same lines to further clarify the issue.
ER