Correlated $��d$ pairs from the $K^{-}_{stop} A \to ��d A'$ reaction
説明
Correlated $��d$ pairs emitted after the absorption of negative kaons at rest $K^{-}_{stop}A\to ��d A'$ in light nuclei $^6Li$ and $^{12}C$ are studied. $��$-hyperons and deuterons are found to be preferentially emitted in opposite directions. The $��d$ 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$] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DA$��$NE (LNF).
13 pages, 5 figures, accepted for publication in Phys. Lett. B