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تسجيل مستخدم جديدComment on A possible explanation of the D0 like-sign dimuon charge aymmetry
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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 $b to c ell u$, vanishes.
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The DO collaboration has measured the like-sign dimuon charge asymmetry in $p bar{p}$ collisions at the Fermilab Tevatron collider. The result is significantly different from the standard model expectation of CP violation in mixing. In this paper we
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