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arXiv 1209.5489nucl-thhep-ph
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$Ξ$重子的产生和宇称确定

Production and parity determination of $Ξ$ baryons

Yongseok Oh, Kanzo Nakayama, Helmut Haberzettl

摘要:

为了理解强子的结构和产生机制,确定它们的量子数是非常重要的。特别是对于研究$Ξ$和$Ω$重子的自旋和宇称量子数,理解奇异扇区中的强相互作用是非常重要的。目前,只有少数$Ξ$重子的量子数是已知的,甚至连基态$Ξ(1318)$的宇称也从未被测量过。在本文中,我们提出了一种新的、独立于模型的方法,仅基于强子反应$\bar{K} N \to K Ξ$的对称性考虑来确定$Ξ$重子的宇称。

英文摘要:

To understand the structure of hadrons and their production mechanisms, it is very important to be able to identify their quantum numbers. For investigating the spin and parity quantum numbers of $Ξ$ and $Ω$ baryons, in particular, it is very important to understand strong interactions in the strangeness sector. At present, such quantum numbers are known for only a few of the $Ξ$ baryons, and even the parity of the ground state $Ξ(1318)$ has never been measured. In this article, we present a novel, model-independent way to determine the parity of $Ξ$ baryons solely based on symmetry considerations for the hadronic reaction $\bar{K} N \to K Ξ$.

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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