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arXiv · 0808.2362

Something about Z-penguins I want to tell

Ulrich Haisch
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Abstract

We stress that in models with constrained minimal flavor violation large negative corrections to the flavor-changing Z-penguin amplitudes are excluded by the precision measurements of the Z -> b anti-b pseudo observables performed at LEP and SLC. 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. 2008-10-19. Something about Z-penguins I want to tell. https://arxiv.org/abs/0808.2362

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