The Neutral Higgs Effects on Rare Decays $B\to X_s{l}^{+}{l}^{-}$ in T2HDM

Abstract

We calculate the new physics contributions to the branching ratios of the rare decays $B\to X_s{l}^{+}{l}^{-}$ $(l=e,\mu )$ induced by neutral Higgs bosons loop diagrams in the top quark two-Higgs-doublet model (T2HDM). From the numerical calculations, we find that (a) the neutral Higgs boson's correction to $B\to X_s{l}^{+}{l}^{-}$ decays interferes constructively with its standard model counterpart, but small in magnitude; (b) the neutral Higgs contributions to the branching ratio of $B\to X_s{l}^{+}{l}^{-}$ decay can be neglected safely if their masses are larger than 100 GeV and $\tan \beta \le 40$.

Comments: RevTex file,12 pages, 3 eps figues