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Large Supersymmetric Contribution to CP Asymmetry of B_d \to ϕK_S from Left-Handed Squark Mixing

Motoi Endo·Mitsuru Kakizaki·Masahiro Yamaguchi
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Abstract

Supersymmetric contribution to the CP asymmetry of B_d \to ϕK_S is re-examined. It is emphasized that our analysis takes into account the recently found constraint from the mercury electric dipole moment, in addition to the well-known constraint from the branching ratio of b \to s γ. We show that, despite these constraints, the CP asymmetry can considerably deviate from the Standard Model prediction, if the CP-odd flavor mixing comes from left-handed squarks. Alignment mechanism of sfermion masses and mixing may imprint the required flavor mixing at high energy scale.

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Motoi Endo, Mitsuru Kakizaki, Masahiro Yamaguchi. 2004-04-06. Large Supersymmetric Contribution to CP Asymmetry of B_d \to ϕK_S from Left-Handed Squark Mixing. https://doi.org/10.1016/j.physletb.2004.05.006

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