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arXiv · hep-ph/0002173

Is it possible to Measure the Weak Phase of a Penguin Diagram?

D. London·N. Sinha·R. Sinha
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Abstract

The $b\to d$ penguin amplitude receives contributions from internal $u$, $c$ and $t$-quarks. We show that it is impossible to measure the weak phase of any of these penguin contributions without theoretical input. However, a single assumption involving the hadronic parameters makes it possible to obtain the weak phase and test for the presence of new physics in the $b\to d$ flavour-changing neutral current.

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D. London, N. Sinha, R. Sinha. 2000-02-16. Is it possible to Measure the Weak Phase of a Penguin Diagram?. https://doi.org/10.1142/9789812791870_0017

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