Saved Bookmarks
| 1. |
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) ? |
|
Answer» Solution :(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. |
|