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

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

2004-03-25

arxiv.org/abs/hep-ph/0403260v2

Phys.Lett. B594 (2004) 205-212

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures

Scientific paper

10.1016/j.physletb.2004.05.006

Supersymmetric contribution to the CP asymmetry of B_d \to \phi K_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 \gamma. 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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