Testing the nature of the image and image states using QCD sum rules Original Research Article

We use the QCD sum rules to analize the masses and partial hadronic decays widths of the mesons View the MathML source and X(3872), in the hypotesis that these mesons can be identified as four-quark states. We use a diquak-antidiquark current and work to the order of ms in full QCD. Our results indicate that a four-quark structure is acceptable for View the MathML source, but it is dificult to explain the very narrow width of the meson X(3872).