251 citations · 329 across the 3 of their papers we have counts for
4 papers
Four-quark stability
J. Vijande, A. Valcarce, J. -M. Richard +1
The physics of charm has become one of the best laboratories exposing the limitations of the naive constituent quark model and also giving hints into a more mature description of m…
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…
Chromomagnetism, flavour symmetry breaking and S-wave tetraquarks
Franco Buccella, Hallstein Hogaasen, Jean-Marc Richard +1
The chromomagnetic interaction, with full account for flavour-symmetry breaking, is applied to S-wave configurations containing two quarks and two antiquarks. Phenomenological impl…
A chromomagnetic mechanism for the X(3872) resonance
H. Hogaasen, J. M. Richard, P. Sorba
The chromomagnetic interaction, with proper account for flavour-symmetry breaking, is shown to explain the mass and coupling properties of the X(3872) resonance as a = 1$^…