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arXiv · hep-ph/9604336

Remarks on a Technique of Measuring CP phase $α$

N. G. Deshpande·Xiao-Gang He·Sechul Oh
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Abstract

We present a method to measure the CKM phase $α$ and the tree and penguin (strong and electroweak) amplitudes in $B \rightarrow ππ$ decays, based on isospin consideration and the weak assumption that all tree amplitudes have a common strong phase and all penguin amplitudes have a different common phase. The method needs only the time-independent measurements of the relevant decay rates in $B \rightarrow ππ$. We also propose a method to experimentally examine the validity of the assumption that all penguin amplitudes have the same strong phases, and to extract detailed informations about the hadronic matrix elements.

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N. G. Deshpande, Xiao-Gang He, Sechul Oh. 1996-04-16. Remarks on a Technique of Measuring CP phase $α$. https://doi.org/10.1016/0370-2693(96)00515-1

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