InterviewSolution
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InterviewSolution
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Which of the following process processes are forbidden by the law of conservation of strangeness : (1)`pi^(-)+prarr Sigma^(-)+K^(+)`, (2) `pi^(-)+prarrSigma^(+)+K^(-)`, (3)`pi^(-)+prarrK^(+)+K^(-)+n`, (4) `n+prarr ^^ ^(0)+Sigma^(+)`, (5) `pi^(-)+nrarr Xi^(-)+K^(+)+K^(-)`, (6) `K^(-)+prarr Omega+K^(+)+K^(0)` ? |
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Answer» (1) `pi^(-)+prarrSigma^(-)+K^(+)` `0 0 -1 1` so `DeltaS=0` allowd. (2) `pi^(-)+prarrSigma^(+)+K^(-)` `0 0 -1 1` so `DeltaS= -2` forbiddeb (3) `pi^(-)+prarrK^(-)+K^(+)+n` `0 0 rarr-1 1 0` so `DeltaS=0`, allowed (4)`n+prarr^^ ^(0)+Sigma^(+)` `0 0 -1 -1` so `DeltaS= -2`. forbidden (5) `pi^(-)+nrarr=^(-)+K^(+)+K^(-)` `0 0rarr -2 1 -1` so `DeltaS= -2`. forbidden. (6) `K^(-)+prarrSigma^(-)+K^(+)K^(o)` `-1 0 3+1+1` so `DeltaS=0` allowed. |
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