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arXiv 0710.4322hep-ex
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在动量为10 GeV/c的p+A碰撞中用$Λ$ -超子和$K^0_s$ -介子系统搜索奇异多重子态

Exotic strange multibaryon states searches with $Λ$- hyperon and $K^0_s$- meson systems in p+A collisions at momentum 10 GeV/c

P. Zh. Aslanyan

备注：
10 pages, 16 figures, Proc. Int. Conference Hadron Structure,2-7 September, Bratislava, 2007
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摘要：

本文综述了在$Λπ^+$，$Λπ^-$，$Λp$，$Λp p$，$ΛK^0_S$，$K^0_Sπ^{\pm}$和$K^0_Sp$子系统的有效质量谱中观察到的奇异多重子态，其中$Λπ^+$和$K^0_Sπ^{\pm}$谱的不变质量观测到了著名的$Σ^{*+}$（1385）和$K^{*\pm}$（892）共振。p+A反应的$Σ^{*-}(1385)$的宽度比PDG中的大两倍。$Ξ^-\to Λπ^-$的截面比p+丙烷相互作用中预期的几何截面大7-8倍。在丙烷泡室的照片上检测到的一些事件被解释为S=-2的轻和重$H^{0,+}$二重子。

英文摘要：

Review for exotic strange multibaryon states were obseved in the effective mass spectra of: 1)$Λπ^+$, $Λπ^-$, $Λp$, $Λp p$, and $ΛK^0_S$, $K^0_Sπ^{\pm}$ and $K^0_Sp$ subsystems.The invariant mass of $Λπ^+$ and $K^0_Sπ^{\pm}$ spectra has observed well known $Σ^{*+}$(1385) and $K^{*\pm}$(892) resonances. The width of $Σ^{*-}(1385)$ for p+A reaction is two time larger than that presented in PDG. The cross section of $Ξ^-\to Λπ^-$ is 7-8 times larger than expected geometrical cross section in p+propane interaction. A few events detected on the photographs of the propane bubble chamber, were interpreted as S=-2 light and heavy $H^{0,+}$ dibaryons.

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