Investigating different structures for the $X(3872)$

Abstract

Using the QCD spectral sum rule approach we investigate different currents with $J^{PC}=1^{++}$, which could be associated with the $X(3872)$ meson. Our results indicate that, with a four-quark or molecular structure, it is very difficult to explain the narrow width of the state unless the quarks have a special color configuration.

4 pages. Contribution to the proceedings of the 15th International QCD Conference (QCD10)

References in corpus (3)

• Can the X(3872) be a 1^{++} four-quark state?
• QCD Sum Rules for the X(3872) as a mixed molecule-charmoniun state
• $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ and $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}{\pi }^0$ decay widths from QCD sum rules