Strange Multibaryon States with ΛHyperon Systems in pa Collision at 10 Gev/c

Abstract

Experimental data from the 2m propane bubble chamber have been analyzed for exotic baryon states search. A number of peculiarities were found in the effective mass spectra of: $\Lambda {\pi }^{+}$(${\Sigma }^{\ast +}$(1382),PDG), $\Lambda p$ and $\Lambda pp$ subsystems. A few events detected on the photographs of the propane bubble chamber exposed to a 10 GeV/c proton beam, were interpreted as S=-2 $H^0$ light($<M_{(\Lambda \Lambda )}$) and heavy $H^{0,+}$. New event, detected on the photographs of the propane bubble chamber was interpreted as heavy $H^{+}(2488)$ dibaryon by weak decay channels of $K^{-}pp$ or ${\Sigma }^{+}p{\pi }^{-}$.

4 pages, 7 figures,Helmholtz Int. Summer School "Dense Matter In Heavy Ion Collisions and Astrophysics", JINR, Dubna, August 21 September 1