Charmless Hadronic Decays B → VV in the Topcolor-Assisted Technicolor Model**The project supported by National Natural Science Foundation of China under Grant No. 10075013 and 10275035 and the Research Foundation of Nanjing Normal University under Grant No. 214080A916

Abstract

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