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arXiv · hep-ph/9703335

On dipenguin contribution to D^0 - \bar D^0 mixing

Alexey A. Petrov
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Abstract

We study the impact of the four-quark dipenguin operator to the D^0 - \bar D^0 mixing. It is shown to contribute to the short distance piece at the same order of magnitude as the box diagram.

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Alexey A. Petrov. 1997-03-16. On dipenguin contribution to D^0 - \bar D^0 mixing. https://doi.org/10.1103/physrevd.56.1685

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