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Along with $\pi^0$ and {\eta} mesons, a resonance structure in the invariantmass spectrum of two photons at M{\gamma}{\gamma} = 360 \pm 7 \pm 9 MeV isobserved in the reaction d + C \rightarrow {\gamma} + {\gamma} + X at momentum2.75 GeV/c per nucleon. Estimates of its width and production cross section are{\Gamma} = 64 \pm 18 MeV and $\sigma_{\gamma\gamma}$ = 98 \pm 24 {\mu}b,respectively. The collected statistics amount to 2339 \pm 340 events of 1.5\cdot 10^6 triggered interactions of a total number ~ 10^12 of dC-interactions.The results on observation of the resonance in the invariant mass spectra oftwo $\pi^0$ mesons are presented: the data obtained in the d + C \rightarrow{\gamma} + {\gamma} reaction is confirmed by the d + C \rightarrow $\pi^0$ +$\pi^0$ reaction: $M_{\pi^0\pi^0}$ = 359.2 \pm 1.9 MeV, {\Gamma} = 48.9 \pm 4.9MeV; the ratio of Br(R\rightarrow{\gamma}{\gamma}) /Br(R\rightarrow$\pi^0\pi^0$) = (1.8 {\div} 3.7)\cdot10^-3.

Resonance structure in the {\gamma}{\gamma} and $\pi^0\pi^0$ systems in dC interactions