Case2 result

d&Lambda case2 correlation analysis results are presented here. Firstly, various spectyra are compared between "signal"(red) and "d on PA"(green) events.

Result without final state selection.

The reaction final states,

K- + 4He -> &Lambda + d + n

and

K- + 4He -> &Sigma0(&Lambda&gamma) + d + n

are separable by 4He(stopped K-,d&Lambda)N* missing mass MN*. Now we identify the &Lambda d n final state by, 900 MeV/c2< MN* < 960 MeV/c2. Because the &Sigma0 d n component is not seen, we just present a Dalitz plot for &Lambda d n final state below.

Dalitz plot of &Lambda d n events

A Dalitz plot of a &Lambda d n final state is shown below.