New CP phase of – mixing on T violation in

A large CP-violating phase uncovered recently by CDF and DØ Collaborations in the time-dependent CP asymmetry (CPA) of the B_s→J/Ψ decay clearly indicates that a non-Cabibbo–Kobayashi–Maskawa (CKM) phase has to be brought into the b→s transition. We find that the model with SU(2)_L singlet exotic quarks cannot only provide the new phase induced from the Z-mediated flavor changing neutral current (FCNC) at tree level, but also strongly relate the B_s– mixing, B_q→V_qℓ⁺ℓ⁻ (V_ds]=K^*]) and B_s→μ⁺μ⁻ together. In particular, we show that the new CP phase can be unambiguously exposed by the large statistical significances of T violating observables in B_q→V_qℓ⁺ℓ⁻, while the branching ratio of B_s→μ⁺μ⁻ can be enhanced to be O(10⁻⁸).