Shi-Lin Zhu
Published 1998-12-17, updated 1999-03-30Version 3
We first derive the mass sum rules for the heavy hybrid mesons to obtain the binding energy and decay constants in the leading order of HQET. The pionic couplings between the lightest $1^{-+}$ hybrid $(Q\bar q g)$ and the lowest three heavy meson doublets are calculated with the light cone QCD sum rules. With $SU_f (3)$ flavor symmetry we calculate the widths for all the possible two-body decay processes with a Goldstone boson in the final state. The total width of the $1^{-+}$ hybrid is estimated to be 300 MeV. We find the dominant decay mode of the $1^{-+}$ hybrid is $1^{-+}\to \pi + 1^+$ where the $1^+$ heavy meson belongs to the $(1^+,2^+)$ doublet. Its branching ratio is about 80% so this mode can be used for the experimental search of the lowest heavy hybrid meson.
Comments: 20 pages + 12 PS figures, introduction revised, Fig 7 updated, to appear in Phys. Rev. D
Journal: Phys.Rev.D60:014008,1999
${Σ_{Q}Λ_{Q}π}$ Coupling Constant in Light Cone QCD Sum Rules
Decay widths of the spin-2 partners of the X(3872)
The ratio of decay widths of X(3872) to $ ψ^{\prime}γ$ and $ J/ψγ$ as a test of the X(3872) dynamical structure
