PT Journal
AU Albaladejo, M
   Guo, FK
   Hidalgo-Duque, C
   Nieves, J
   Pavon Valderrama, M
TI Decay widths of the spin-2 partners of the X(3872)
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2015
BP 547 - 26pp
VL 75
IS 11
DI 10.1140/epjc/s10052-015-3753-6
LA English
AB We consider the X(3872) resonance as a J(PC) = 1(++) D (D) over bar* hadronic molecule. According to heavy quark spin symmetry, there will exist a partner with quantum numbers 2(++), X-2, which would be a D*(D) over bar* loosely bound state. The X-2 is expected to decay dominantly into D (D) over bar, D (D) over bar* and (D) over barD* in d-wave. In this work, we calculate the decay widths of the X-2 resonance into the above channels, as well as those of its bottom partner, X-b2, the mass of which comes from assuming heavy flavor symmetry for the contact terms. We find partial widths of the X-2 and X-b2 of the order of a few MeV. Finally, we also study the radiative X-2 -> D (D) over bar*gamma. and X-b2 -> (B) over bar B*gamma decays. These decay modes are more sensitive to the long-distance structure of the resonances and to the D (D) over bar* or B (B) over bar* final state interaction.
ER