400 ${{\mathit p}}$ ${}^{}\mathrm {A}$ $\rightarrow$ 4 ${{\mathit K}}$ X
References:
GREEN
1986
PRL 56 1639
Observation of a Narrow Enhancement in ${{\mathit \phi}}{{\mathit K}}{{\mathit K}}$ and ${{\mathit \phi}}{{\mathit \pi}}{{\mathit \pi}}$ Final States Produced in 400 GeV ${{\mathit p}}{{\mathit N}}$ Interactions
