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arXiv 0910.1822nucl-thhep-ph
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低能$K^{-}N$相互作用的可分势模型

Separable potential model for $K^{-}N$ interactions at low energies

A. Cieply, J. Smejkal

摘要:

构造了有效的可分介子-重子势,使其与外介子动量中的等效手征振幅匹配到二阶。我们将模型参数(低能常数)拟合到阈值和低能$K^{-}p$数据。在此过程中,在动量空间中精确求解了$K^{-}$ -质子束缚态问题,并利用已有的低能$K^{-}p$截面同时计算了K介子氢的1 s能级特性.该模型还用于描述$πΣ$质谱和$K^{-}n$振幅的能量依赖性。

英文摘要:

The effective separable meson-baryon potentials are constructed to match the equivalent chiral amplitudes up to the second order in external meson momenta. We fit the model parameters (low energy constants) to the threshold and low energy $K^{-}p$ data. In the process, the $K^{-}$-proton bound state problem is solved exactly in the momentum space and the 1s level characteristics of the kaonic hydrogen are computed simultaneously with the available low energy $K^{-}p$ cross sections. The model is also used to describe the $πΣ$ mass spectrum and the energy dependence of the $K^{-}n$ amplitude.

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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