We consider spontaneous quark transitions between the

${\mathsf{\Lambda}}^{0}$ baryon and its resonant states, and (anti)quark transitions between the neutral kaon K

^{0} and the two heavy

${\mathsf{\eta}}_{\mathrm{q}}$-mesons (q = c, b). The measured differences in mass deficits are used to

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We consider spontaneous quark transitions between the

${\mathsf{\Lambda}}^{0}$ baryon and its resonant states, and (anti)quark transitions between the neutral kaon K

^{0} and the two heavy

${\mathsf{\eta}}_{\mathrm{q}}$-mesons (q = c, b). The measured differences in mass deficits are used to calculate the binding energy levels of valence c and b (anti)quarks in these transitions. The method takes into account the isospin energy release in K

^{0} transitions and the work conducted by the strong force in suppressing internal Coulomb repulsions that develop in the charged

${\mathsf{\Lambda}}_{\mathrm{c}}^{+}$-baryon. We find that the flips

$\mathrm{s}\to \mathrm{c}$ and

$\overline{\mathrm{s}}\to \overline{\mathrm{c}}$ both release energy back to the strong field and that the overall range of quark energy levels above their u-ground is 100-MeV wider than that of antiquark energy levels above their

$\overline{\mathrm{d}}$-ground. The wider quark range stems from the flip

$\mathrm{s}\to \mathrm{b}$, which costs 283 MeV more (or

$3\times $ more) than the corresponding antiquark flip

$\overline{\mathrm{s}}\to \overline{\mathrm{b}}$. At the same time, transitions from the respective ground states to the s and

$\overline{\mathrm{s}}$ states (or the c and

$\overline{\mathrm{c}}$ states) point to a clear origin of the elusive charge-parity (CP) violation. The determined binding energy levels of (anti)quarks allow us to analyze in depth the (anti)quark transitions in

$\mathsf{\Lambda}$-baryons and B-mesons.

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