2007/01/18 by Xin-Fen Chen, Xin-fen Chen, Chen, Xin-fen +6
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0701146
24 pages, 8 ps and eps figures, Revtex
arxiv created 2007/01/18 · arxiv updated 2009/12/01
In this paper, we calculate the branching ratios and CP-violating asymmetries for Bs → (ρ0,ω, ϕ) η(′) decays in the perturbative QCD (pQCD) factorization approach. Numerically we found that (a) the pQCD predictions for the CP-averaged branching ratios are Br(Bs→ρ0 η)≈ 0.07 × 10-6, Br(Bs→ρ0η^′) ≈ 0.10 × 10-6, Br(Bs →ωη) ≈ 0.02 × 10-6, Br(Bs →ωη^′) ≈ 0.13 × 10-6, Br(Bs →ϕη) ≈ 2.7 × 10-5 and Br(Bs →ϕη^′) ≈ 2.0 × 10-5; (b) the gluonic contributions are small in size: less than 3% for B → (ρ, ω, ϕ) η decays, and about 10% for B → (ρ, ω, ϕ) η^′ decays; and (c) the pQCD predictions for the CP-violating asymmetries of the considered decays are generally not large in magnitude. The above predictions can be tested in the forthcoming LHC-b experiments at CERN.