The QCD instanton can be observed at relatively low energies at Nica collider by studying the spin-spin correlations between the incoming proton and the produced $$\Lambda $$
Λ
or $$\Sigma $$
Σ
hyperons (or the $$\Lambda $$
Λ
and $$\bar{\Lambda }$$
Λ
¯
hyperons). Low Nica energy will allow to better record and to measure the polarization of the hyperon originated by the polarized valence quark(s) in the proton fragmentation region.