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arXiv · 1903.07340

Structure, formation and decay of $\bar{K}NN$ system by Faddeev-AGS calculations

Sajjad Marri·S. Z. Kalantari·J. Esmaili
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Abstract

The Faddeev AGS equations are solved for coupled-channels $\bar{K}NN-πΣ{N}$ system with quantum numbers $I=1/2$ and $S=0$. Using separable potentials for $\bar{K}N-πΣ$ interaction, we have calculated the transition probability for the $(Y_{K})_{I=0}+N\rightarrowπΣ{N}$ reaction. The possibility to observe the trace of $K^{-}pp$ quasi-bound state in the $πΣ{N}$ mass spectra was studied. Various types of chiral based and phenomenological potentials are used to describe the $\bar{K}N-πΣ$ interaction. It was shown that not only we can see the signature of the $K^{-}pp$ quasi-bound state in the mass spectra, but also, one can see the trace of branch points in the observables.

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Sajjad Marri, S. Z. Kalantari, J. Esmaili. 2019-03-18. Structure, formation and decay of $\bar{K}NN$ system by Faddeev-AGS calculations. https://doi.org/10.1088/1674-1137%2F43%2F6%2F064101

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