Exotic narrow resonance searches in the systems Ks0p, Ks0Λ and Λp in pA-interactions at 10 GeV/c

Experimental data from the JINR 2m propane bubble chamber have been analyzed to search for an exotic baryon states, in the Ks0p, Ks0Λ and Λp decay mode for the reaction p+C3H8 at 10 GeV/c. The invariant mass spectrum ΛKs0 observe a narrow peaks at 1750, 1795, 1850 MeV/c2. The statistical significance of these peaks has been estimated as 5.6, 3.3 and 3.0 S.D., respectively. There are the small enhancements in mass regions of (1650-1675) and (1925-1950) MeV/c2. These would be candidates for the N0 or the Ξ0 penta-quark states. The pKs0 invariant mass spectrum shows resonant structures with M(Ks0p) = 1540, 1613, 1821 MeV/c2. The statistical significance of these peaks have been estimated as 5.5, 4.8 and 5.0 s.d., respectively. There are also small peaks in 1487 (3 s.d.), 1690 (3.6 s.d.), 1750 (2.3 s.d.) and 1980 (3.0 s.d.) MeV/c2 mass regions. The invariant mass spectrum S = -1 Λp shows narrow peaks at 2100, 2175, 2285 and 2353 MeV/c2. Their excess above background by the second method is 6.9, 4.9, 3.8 and 2.9 S.D., respectively. There is also a small peak in 2225 (2.2 s.d.) MeV/c2 mass region. (author)