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 (10)

• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
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• Exotica
• Scalar mesons above and below 1 GeV
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• Can the X(3872) be a 1^{++} four-quark state?
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Cited by in corpus (3)

• Exotic hadrons: review and perspectives
• Improved QCD sum rule study of $Z_c(3900)$ as a $\bar{D}{D}^{\ast }$ molecular state
• X(3872) and Its Heavy Quark Spin Symmetry Partners in QCD Sum Rules