2009/11/30 by Chuan-Hung Chen · 1 citation
Physics and Astronomy · #Asymmetry #Black Holes and Theoretical Physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Phase (matter) #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ph
paper · pdf · doi:10.1016/j.physletb.2009.12.014
published as Phys.Lett.B683:160-164,2010 · 13 pages, 3 figures, references added, final version to appear in PLB
openalex publication_date 2009/12/17 · arxiv created 2009/12/25 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The evidence of a large CP phase has been shown by CDF and DØ collaborations in the time-dependent CP asymmetry (CPA) of Bs→ J/Ψϕ decay, where the nonvanished CPA clearly implies the existence of a non-Kobayashi-Maskawa phase in b→ s transition. We study the new phases originated by the extra family dependent U(1)' model and examine their impact on T or CP violating observables in Bq→ Vq ℓ+ ℓ- decays with Vq=K^* (ϕ). Adopting the constraints from the current data of Δms and the branching ratios for Bs→ μ+ μ- and Bq→ Vqℓ+ ℓ-, we find that ϕJ/Ψϕs=-(0.26± 0.22) and the T-odd observables of above 10% in the decay chain Bq→ Vq(→ Kπ[KK]) ℓ+ ℓ- can be achieved. In addition, we demonstrate that the longitudinal and transverse polarizations of K^* and the up-down asymmetry of K in the same decay chain are also sensitive to the Z'-mediated effects.