Comment on "A possible explanation of the D0 like-sign dimuon charge aymmetry"
classification
✦ hep-ph
hep-ex
keywords
amplitudeasymmetryaymmetrychargeclaimedcommentcontributiondescotes-genon
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We show that a contribution due to a second order amplitude with intermediate $\bar u d$ in a loop, which was claimed by Descotes-Genon and Kamenik to dominate the CP asymmetry in $b \to c \ell \nu$, vanishes.
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