How To Kill a Penguin

Ulrich Haisch

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arXiv · 0706.3444

How To Kill a Penguin

Ulrich Haisch

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Abstract

Within constrained minimal-flavor-violation the large destructive flavor-changing Z-penguin managed to survive eradication so far. We give a incisive description of how to kill it using the precision measurements of the Z -> b anti-b pseudo observables. The derived stringent range for the non-standard contribution to the universal Inami-Lim function C leads to tight two-sided limits for the branching ratios of all Z-penguin dominated flavor-changing K- and B-decays.

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Ulrich Haisch. 2007-06-23. How To Kill a Penguin. https://arxiv.org/abs/0706.3444

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