Comment on the Matrix Element of O₁₁
classification
✦ hep-ph
keywords
elementmatrixaccidentalagreementanalysisattentionbecausebertolini
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The gluon dipole operator, $O_{11}$, has received much attention recently because it can have a large coefficient in some SUSY extensions of the standard model. We find that the commonly used matrix element of $O_{11}$ of Bertolini, Eeg and Fabbrichesi is in rough (but accidental) numerical agreement with an estimate based on dimensional analysis.
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