Investigating different structures for the $X(3872)$

Details Investigating different structures for the $X(3872)$ Investigating different structures for the $X(3872)$

2010-07-26

arxiv.org/abs/1007.4575v1

Nucl.Phys.Proc.Suppl.207-208:249-252,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/j.nuclphysbps.2010.10.06

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.

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