Charmless hadronic decays $B \to VV$ in the Topcolor-assisted Technicolor model

Details Charmless hadronic decays $B \to VV$ in the Topcolor-assisted Technicolor model Charmless hadronic decays $B \to VV$ in the Topcolor-assisted Technicolor model

2003-06-30

arxiv.org/abs/hep-ph/0306292v1

Commun.Theor.Phys. 40 (2003) 77-84

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, Revtex, 4 EPS figures

Scientific paper

Based on the effective Hamiltonian with the generalized factorization approach, we calculate the branching ratios and CP asymmetries of $B \to VV$ decays in the Topcolor-assisted Technicolor (TC2) model. Within the considered parameter space we find that: (a) for the penguin-dominated $B \to K^{*+}\phi$ and $K^{*0}\phi$ decays, the new physics enhancements to the branching ratios are around 40%; (b) the measured branching ratios of $B \to K^{*+} \phi$ and $ K^{*0} \phi$ decays prefer the range of $3 \lesssim \nceff \lesssim 5$; (c) the SM and TC2 model predictions for the branching ratio ${\cal B}(B^+ \to \rho^+ \rho^0)$ are only about half of the Belle's measurement; and (d) for most $B \to VV$ decays, the new physics corrections on their CP asymmetries are generally small or moderate in magnitude and insensitive to the variation of $\mpcc$ and $\nceff$.

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