A possible explanation of the D0 like-sign dimuon charge asymmetry

Sébastien Descotes-Genon, Jernej F. Kamenik
2013 Physical Review D  
We reconsider the recent observation by the D0 experiment of a sizable like-sign dimuon charge asymmetry, highlighting that it could be affected by CP-violating New Physics contributions not only in Bd- and Bs-meson mixings, but also in semileptonic decays of b and c quarks producing muons. The D0, measurement could be reconciled with the Standard Model expectations for neutral-meson mixings, provided that the CP asymmetry in semileptonic b (c) decays reaches 0.3 % (1%). Such effects, which lie
more » ... within the available (rather loose) experimental bounds, would be clear indications of New Physics and should be investigated experimentally.
doi:10.1103/physrevd.87.074036 fatcat:4sk5n4xzp5cwbclhezpvogkosq