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Physical Review D
The measurement of a large like-sign dimuon asymmetry A^b_SL by the D0 experiment at the Tevatron departs noticeably from Standard Model expectations and it may be interpreted as a hint of physics beyond the Standard Model contributing to Δ B≠ 0 transitions. In this work we analyse how the natural suppression of A^b_SL in the SM can be circumvented by New Physics. We consider generic Standard Model extensions where the charged current mixing matrix is enlarged with respect to the usual 3× 3doi:10.1103/physrevd.91.035013 fatcat:2jkgjehdfjfpvdyjjuzxthsume