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most citedCan the X(3872) be a 1^{++} four-quark state?

251 citations · 587 across the 14 of their papers we have counts for

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hep-ph2006★ 251 cited

Can the X(3872) be a 1^{++} four-quark state?

R. D. Matheus, S. Narison, M. Nielsen +1

We use QCD spectral sum rules to test the nature of the meson X(3872), assumed to be an exotic four-quark (c\bar{c}q\bar{q}) state with J^{PC}=1^{++}. For definiteness, we work wit…

hep-ph2006

U(1)_A Topological Susceptibility and its Slope, Pseudoscalar Gluonium and the Spin of the Proton

Stephan Narison

We review the determinations of the pseudoscalar glueball and eventual radial excitation of the η' masses and decay constants from QCD spectral sum rules (QSSR). The glueball mass…