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    X → π– + p

    why is this weak interaction and not strong interaction considering a pion and proton are both hadrons
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    Was X a kaon (or does it have a strange quark)? Because strangeness isn't conserved via the weak interaction, but it would be conserved if it was strong so if X is strange then it can't be strong as strangeness isn't conserved.

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    (Original post by homeland.lsw)
    X → π– + p

    why is this weak interaction and not strong interaction considering a pion and proton are both hadrons
    Look at the strangeness in each of the particles. If the strangeness on both sides are different, then you know its weak interaction as strangeness isn't conserved in weak interactions (using the conservation of strangeness)
 
 
 
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