Correlated $Λd$ pairs from the $K^{-}_{stop} A \to Λd A'$ reaction

Details Correlated $Λd$ pairs from the $K^{-}_{stop} A \to Λd A'$ reaction Correlated $Λd$ pairs from the $K^{-}_{stop} A \to Λd A'$ reaction

2007-08-27

arxiv.org/abs/0708.3614v1

Phys.Lett.B654:80-86,2007

Physics

Nuclear Physics

Nuclear Experiment

13 pages, 5 figures, accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2007.08.051

Correlated $\Lambda d$ pairs emitted after the absorption of negative kaons at rest $K^{-}_{stop}A\to \Lambda d A'$ in light nuclei $^6Li$ and $^{12}C$ are studied. $\Lambda$-hyperons and deuterons are found to be preferentially emitted in opposite directions. The $\Lambda d$ invariant mass spectrum of $^6Li$ shows a bump whose mass is 3251$\pm$6 MeV/c$^2$. The bump mass (binding energy), width and yield are reported. The appearance of a bump is discussed in the realm of the [$\bar{K}3N$] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DA$\Phi$NE (LNF).

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