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We explore the consequences of treating the X(3872) meson as a tetraquark bound state. As dynamical framework we employ a relativistic constituent quark model which includes infrared confinement in an effective way. We calculate the decay widths of the observed channels X → J/ψ + 2π(3π) and X →D 0 + D 0 + π 0 via the intermediate off-shell states X → J/ψ + ρ(ω) and X →D + D * . For reasonable values of the size parameter ΛX of the X(3872) we find consistency with the available experimental data. We also discuss the possible impact of the X(3872) in a s-channel dominance description of the J/ψ dissociation cross section.

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