628 Particle Physics and CosmologyP46.23(a)πη−+→p2 violates conservation of baryon number as 0 10, not allowed .(b)Kn−−+→ +Λ0πBaryon number,0 11 0+→+Charge,−+ → −10 01Strangeness,−+ →−+10Lepton number,00→The interaction may occur via the strong interaction since all are conserved.(c)K→+ππ0Strangeness,−→ +100Baryon number,00→Lepton number,00→Charge,−→−+110Strangeness is violated by one unit, but everything else is conserved. Thus, the reaction canoccur via the weak interaction , but not the strong or electromagnetic interaction.
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