Preliminary study of the missing mass spectra via the $^{12}C(p, K^0_s)$   and $^{12}C(p,\Lambda)$ reactions at 10 GeV/c
  The missing mass spectra for the $^{12}C(p, K^0_s)$ and $^{12}C(p,\Lambda)$ reactions have been studied by using of the propane bubble chamber(PBC) data from 700000 stereo photographs or $10^6$ inelastic interactions. The momentum spectrum of $\pi^-$ in range of 100-200 MeV/c have observed the significant enhancement from the p+C$\to \pi^-\Lambda$X(p+C$\to\pi^-K^0_s$X) reaction. The missing mass spectra have been observed signals for the $p(p,\pi^-K^0_s)$, $^3H(p,pK^0_s)$, p(p,$\Lambda)\pi^-\gamma$ and p(p,$\pi^-)\Lambda$ reactions. This experimental study will need to continue by using of a different identification methods for a reaction channels. 
P. Zh. Aslanyan
hep-ex nucl-ex