کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1852055 | 1528901 | 2009 | 4 صفحه PDF | دانلود رایگان |

A large CP-violating phase uncovered recently by CDF and DØ Collaborations in the time-dependent CP asymmetry (CPA) of the Bs→J/ΨϕBs→J/Ψϕ decay clearly indicates that a non-Cabibbo–Kobayashi–Maskawa (CKM) phase has to be brought into the b→sb→s transition. We find that the model with SU(2)LSU(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 BsBs–B¯s mixing, Bq→Vqℓ+ℓ−Bq→Vqℓ+ℓ− (Vd[s]=K∗[ϕ]Vd[s]=K∗[ϕ]) and Bs→μ+μ−Bs→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 Bq→Vqℓ+ℓ−Bq→Vqℓ+ℓ−, while the branching ratio of Bs→μ+μ−Bs→μ+μ− can be enhanced to be O(10−8)O(10−8).
Journal: Physics Letters B - Volume 670, Issues 4–5, 5 January 2009, Pages 374–377