Experimental results on the search and investigation of the possible pp π resonance states in inelastic 1 2 C 1 2 C collisions at 3.37 A GeV are presented. The statistically significant peak structure with mass M (p p π +) = 2 1 1 7. 8 ± 1. 2 MeV and Breit–Wigner width Γ = 4. 1 ± 1. 1 MeV has been observed for the first time in the spectrum of invariant masses of pp π + system in 1 2 C 1 2 C collisions at 3.37 A GeV. The inclusive cross-section of the formation of this possible eight quark pp π + resonance state has been estimated to be σ incl = 4. 9 3 ± 0. 8 6 mb. The significant maximum structure with the center estimated at M (p p) ≈ 1 9 3 0 ± 5 MeV, and having a narrow width (< 1 0 MeV), has been observed in the spectrum of the invariant masses of two protons in 1 2 C 1 2 C collisions at 3.37 A GeV when the value of the invariant mass M (p p π +) of the pp π + system falls inside the region of the observed pp π + resonance structure: 2 1 1 0 ≤ M (p p π +) ≤ 2 1 2 6 MeV. [ABSTRACT FROM AUTHOR]