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arXiv 0912.5159hep-ex
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动量为10 Gev/ $c$的Pa碰撞中含$Λ$ -超子系统中奇异多重子态的观测关联

The Observed Correlations for the Strange Multibaryon States in Systems with $Λ$-Hyperon from pa Collision at Momentum of 10 Gev/$c$

P. Zh. Aslanyan

摘要:

他从PDG观察到的众所周知的共振$Σ^0$ $Σ^{*+}$(1385)和$K^{*\pm}$(892)是该方法的良好测试。在$Λπ^{\pm}$,$Λγ$,$Λp$,$Λp p$子系统的有效质量谱中观察到奇异多重子态. $Σ^{*-}(1385)$共振的质量平均值移动到1370 MeV/ $c^2$,宽度是PDG的相同值的两倍。这种对$Σ^{*-}(1385)$共振宽度和不变质量的行为被解释为停止的$Ξ^-\toΛπ^-$和质量不变的介质效应的广泛贡献。次级相互作用产生的$Σ^{*+}(1385)$的质量平均值也发生了变化,直到质量为1370 MeV/ $c^2$。$Σ^0$的宽度比实验误差大$\approx$ 2倍。所有观测到的超子都有增强产生。

英文摘要:

he observed well-known resonances $Σ^0$ $Σ^{*+}$(1385) and $K^{*\pm}$(892) from PDG are good tests of this method. Exotic strange multibaryon states have been observed in the effective mass spectra of: $Λπ^{\pm}$,$Λγ$, $Λp$, $Λp p$ subsystems. The mean value of mass for $Σ^{*-}(1385)$ resonance is shifted till mass of 1370 MeV/$c^2$ and width is two times larger than the same value from PDG. Such kind of behavior for width and invariant mass of $Σ^{*-}(1385)$ resonance is interpreted as extensive contribution from stopped $Ξ^-\toΛπ^-$ and medium effect with invariant mass. The mean value of mass for $Σ^{*+}(1385)$ from secondary interactions is also shifted till mass of 1370 MeV/$c^2$. The width of $Σ^0$ is $\approx$ 2 times larger than the experimental error. There are enhancement production for all observed hyperons.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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