Question: Which of the following processes is allowed and which forbidden by strangeness conservation? (a) - + p K + +p; (b) -

Which of the following processes is allowed and which forbidden by strangeness conservation?

(a) π- + p →  K+ +p;

(b) π- + p →  K+ + Σ-;

(c) K- p →  K+ + Ξ0 + π-;

(d) K+ + p →  K- + Ξ0 + π -.

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