2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206495Non-leptonic D meson decays may provide a reliable testbed for the multiquark interpretation of light scalar mesons. In this letter we consider D_s decay and show that a 4-quark f_0(980) meson could induce a decay pattern, which is forbidden for a q-qbar constituent structure. Experimental tests to probe such possibilities are within reach in the near future.11 pages, 3 figures, minor changes. To appear in Phys. Lett. BHigh Energy Physics - Phenomenologytext