Phys. Rev. D 66, 071502(R) (2002) [4 pages]First hint of nonstandard CP violation from B⃗φKS decay
We comment on the implications of the recently measured CP asymmetry in B⃗φKS decay. The data disfavor the standard model at 2.7σ and, if the trend persists in the future with higher statistics, require the existence of CP violation beyond that in the CKM matrix. In particular, the b⃗ss̅ s decay amplitude would require new contributions of comparable size to the standard model ones with an order one phase. While not every model can deliver such a large amount of CP and flavor violation, those with substantial FCNC couplings to the Z can reproduce the experimental findings. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.071502
DOI:
10.1103/PhysRevD.66.071502
PACS:
13.25.Hw, 11.30.Er
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