arXiv:hep-ph/9703335·v1·High Energy Physics — Phenomenology
On dipenguin contribution to D^0 - \bar D^0 mixing
Alexey A. Petrov (University of Massachusetts)🇺🇸
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.
Comments: 9 pages, RevTex, 1 figure