From the K₀^*(1788) via the D₀^*(2841) and the D_s0^*(2923) to the X'_c0(3946).
Pole movement as a function of flavor mass for  J^P = 0⁺  1^st radial excitation.

	K0*(??) → D0*(??) ns  →  nc From the strange mass (at 0.508 GeV) to the charm mass (at 1.562 GeV). At the same time we vary the threshold from pion-Kaon to pion-D.
	D0*(??) → Ds0*(??) nc  →  sc From the non-strange mass (at 0.406 GeV) to the strange mass (at 0.508 GeV). At the same time we vary the threshold from D-pion to D-Kaon.
	Ds0*(??) → X'c0(3940) sc  →  cc From the strange mass (at 0.508 GeV) to the charm mass (at 1.562 GeV). At the same time we vary the threshold from D-Kaon to D-D. The blue line represents the scattering continuum.