Author/Authors :
V.V. Barmin، نويسنده , , V.G. Barylov، نويسنده , , S.F. Chernukha، نويسنده , , G.V. Davidenko، نويسنده , , V.S. Demidov، نويسنده , , A.G. Dolgolenko، نويسنده , , V.A. Ergakov، نويسنده , , V.M. Golubchikov، نويسنده , , V.E. Lukhmanov، نويسنده , , V.A. Matveev، نويسنده , , A.G. Meshkovsky، نويسنده , , G.S. Mirosidi، نويسنده , , V.A. Shebanov، نويسنده , , N.N. Shishov، نويسنده , , A.A. Sibirtsev، نويسنده , , Yu.V. Trebukhovsky، نويسنده , , B.S. Volkov، نويسنده , , N.K. Zombkovskaya، نويسنده , , C. Guaraldo، نويسنده , , F. Nichitiu، نويسنده , , et al.، نويسنده ,
Abstract :
A study of the reactions pXe → K+K+X, pXe → K+H(H → Σ−p)X and pXe → K+K+H(H → Σ−p)X was performed using the 700-litre xenon bubble chamber DIANA, exposed to the 1 GeV/c antiproton beam of ITEP (Moscow). From a sample of 7.8 · 105 antiproton annihilations at low energy in xenon nuclei 4 events were observed for the reaction pXe| → K+K+X at rest (Pp ≤ 400 MeV/c) and 8 for the same reaction in flight (400 ≤ Pp ≤ 900 MeV/c). The corresponding probabilities turned out to be 3.1 · 10−5 and 3.4 · 10−5, respectively. No H-event was found in the two semi-inclusive reactions pXe → K+HX and pXe → K+K+HX. This lead to the upper limits 6 · 10−6 and 8 · 10−6 (90% C.L.), respectively. The corresponding upper limit for the fully inclusive reaction pXe → HX turned out to be 1.2 · 10−5 (90% C.L.), which is about one order of magnitude lower than the actual value reported in the literature.
