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We offer a new solution to an old puzzle in the penguin-dominated $B\to\pi K$decays. The puzzle is the inconsistency among the measurements of the branchingratios and CP asymmetries of the four $B\to\pi K$ decays: $B^+ \to \pi^+ K^0$,$B^+\to \pi^0 K^+$, $B_d^0\to\pi^- K^+$, $B_d^0\to\pi^0 K^0$. We solve the$B\to\pi K$ puzzle by considering the effect of an axion-like particle (ALP)that mixes with the $\pi^0$ and has mass close to the $\pi^0$ mass. We showthat the ALP can also explain the anomalies in the electron and muon anomalousmagnetic moments.

Axion-like particles resolve the $B \to \pi K$ and g-2 anomalies