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Penguins in B decays

Michael Gronau
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Abstract

We report on recent progress in studying two aspects of $B$ physics, in which penguin amplitudes play an important role: (1) Bounds on penguin pollution in $B^0(t) \to π^+π^-$ constraining CKM parameters, and a lower bound on $B^0 \to π^0π^0$ improving precision in $\sin 2α$. (2) A suggestion for measuring the photon polarization in electroweak penguin decay, $B \to K_1(1400)γ$, providing a precision test of the Standard Model and a probe for new physics.

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Michael Gronau. 2001-12-23. Penguins in B decays. https://doi.org/10.1063/1.1478844

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