Measurement of the mesonic decay branch of the $\bar{K}\!N\!N$
quasi-bound state
Measurement of the mesonic decay branch of the $\bar{K}\!N\!N$
quasi-bound state
We conducted measurements of $K^- + {^3{\rm He}} \to \pi \!Y \!N + N'$ reactions using $1~{\rm GeV}/c$ $K^-$-beam, aiming to understand the broad decay width of $\bar{K} \!N \!N$ ($\approx$ twice as broad as that of $\Lambda(1405)$ considered to be the $\bar{K} \!N$ quasi-bound state). We successfully reproduced distributions …