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

Abstract

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 $B\to K^{\ast +}\varphi$ and $K^{\ast 0}\varphi$ decays, the new physics enhancements to the branching ratios are around 40%; (b) the measured branching ratios of $B\to K^{\ast +}\varphi$ and $K^{\ast 0}\varphi$ decays prefer the range of $3 \lesssim \nceff \lesssim 5$; (c) the SM and TC2 model predictions for the branching ratio $\mathcal{B}(B^{+}\to {\rho }^{+}{\rho }^0)$ 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 $\nceff$.

arXiv comment16 pages, Revtex, 4 EPS figures

Cited by in corpus (2)

• Analysis of the semileptonic ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ transition in topcolor-assisted technicolor (TC2) model
• CP violation of the two-body charmless hadronic B decays in the minimal supergravity Model