Comment on "A possible explanation of the D0 like-sign dimuon charge aymmetry"

Abstract

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.

2 pages, submitted as a Comment to Physical Review D

References in corpus (3)

• Measurement of the anomalous like-sign dimuon charge asymmetry with 9 fb^-1 of p pbar collisions
• Study of CP-violating charge asymmetries of single muons and like-sign dimuons in p pbar collisions
• Second order direct CP asymmetry in B_(s) -> X l nu