Rare Decays B→X_s,d vv and B_s,d→l~＋l~- in the Topcolor-Assisted Technicolor Model

摘要

We calculate the contributions to the rare decays B→X_s,d vv and B_s,d→l~＋l~- from one-loop Z~o-openguin diagrams in the framework of topcoor-assisted Technicolor model. Within the parameter space, we find that: (a) the new contribution from technicians is less than 2/100 of the standard model prediction; (b) the top-pions can provide a factor of 10 to 30 enhancement to the ratios in question; (c) the topcolor-assisted Technicolor model is consistent with the current experimental data.