arXiv:hep-ph/9903346·v1·High Energy Physics — Phenomenology

Rare decays $B \to X_{s, d} ν ν ˉ$ and $B_{s, d} \to l^{+} l^{-}$ in the Topcolor-assisted Technicolor Model

Xiao Zhenjun · Jia Liqun · Lü Linxia · Lu Gongru

Abstract

We calculate the contributions to the rare decays $B \to X_{s, d} ν ν ˉ$ and $B_{s, d} \to l^{+} l^{-}$ from one-loop $Z^{0}$ -penguin diagrams in the framework of Topcolor-assisted Technicolor Model. Within the parameter space, we find that: (a) the new contribution from technipions is less than 2% 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.

Comments: Latex file, 8 pages and 1 eps figure. to be published in Commun. Theor.Phys

Rare decays B→Xs,d​ννˉ and Bs,d​→l+l− in the Topcolor-assisted Technicolor Model

Abstract

Rare decays $B \to X_{s, d} ν ν ˉ$ and $B_{s, d} \to l^{+} l^{-}$ in the Topcolor-assisted Technicolor Model