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arXiv · hep-ph/9408404

Isospin Structure of Penguins And Their Consequences in $B$ Physics

N. G. Deshpande·Xiao-Gang He
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Abstract

Isospin structure of gluon mediated or strong penguin is significantly altered when the full electroweak corrections are included. This has the consequence that some previous analyses which relied on a simple isospin structure in charmless $B$ decays become inapplicable. We present the general Hamiltonian in next-to-leading order QCD, and illustrate our conclusion quantitatively for $B\rightarrow ππ$ and $B\rightarrow Kπ$ decays in the factorization approximation. Some remarks on CP asymmetries in $B$ decays are also made.

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N. G. Deshpande, Xiao-Gang He. 1994-09-08. Isospin Structure of Penguins And Their Consequences in $B$ Physics. https://doi.org/10.1103/physrevlett.74.26

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