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Q. 14.5

Examine the conservation of baryon number in the reaction producing the $\Omega^{-}$ particle shown in the bubble chamber photograph of Figure 14.10.

Verified Solution

This is a straightforward application of the baryon conservation law. The reaction is

$K ^{-}+p \rightarrow K ^{0}+ K ^{+}+\Omega^{-}$ (14.7)

The kaons all have $B=0$, so on the left side we have $B=0+1=1$. The $\Omega^{-}$ has $B=+1$, so on the right side we have $B=0+0+1=1$. This was the experiment that first identified the $\Omega^{-}$ particle, some three years after Gell-Mann predicted its existence.