[填空题]
Calculate the Q-value+ /9 nt9f-rlz mhal7fxny o*hszh03c)d ( k9yp8zwri . for the reaction $\pi^- + p \to \Lambda^0 + K^0$ when negative pions strike stationary protons. Estimate the minimum pion kinetic energy needed to produce this reaction. [Hint: Assume $\Lambda^0$ and $K^0$ move off with the same velocity.]
Q = MeV
$\text{KE}_{\pi^-}$ = MeV
