New CP phase of Bs-Bs mixing on T violation in B(s) -> K*(phi)l( )l(-)

作者：Chen Chuan Hung^*; Geng Chao Qiang; Li Lin

来源：Physics Letters B, 2009, 670(4-5): 374-377.

DOI：10.1016/j.physletb.2008.11.008

A large CP-violating phase uncovered recently by CDF and D empty set Collaborations in the time-dependent CP asymmetry (CPA) of the B-s -> J/psi phi 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-(B) over bar (s) mixing, B-q -> V(q)l( )l(-) (V-d vertical bar s vertical bar = K*vertical bar phi vertical bar) and B-s -> mu( )mu(-) 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(q)l( )l(-), while the branching ratio of B-s -> mu( )mu(-) can be enhanced to be O(10(-8)).

• 出版日期2009-1-5
• 单位清华大学