$B \to X_s l^+ l^-$ decay in a Top quark two-Higgs-doublet model

Details $B \to X_s l^+ l^-$ decay in a Top quark two-Higgs-doublet model $B \to X_s l^+ l^-$ decay in a Top quark two-Higgs-doublet model

2006-05-08

arxiv.org/abs/hep-ph/0605076v3

Phys.Rev.D74:034016,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 8 eps figures, typos removed, final version appeared in PRD

Scientific paper

10.1103/PhysRevD.74.034016

We calculate the new physics contributions to the rare semileptonic decay $B \to X_s l^+ l^-$ $(l=e,\mu)$ induced by the charged-Higgs loop diagrams appeared in the top quark two-Higgs doublet model (T2HDM). Within the considered parameter space, we found that (a) the effective Wilson coefficients $\widetilde{C}_{i}^{eff}(m_b)$ ($i =7\gamma, 9V$ and $10A$) in the T2HDM are always standard model like; (b) the new physics contributions to $\widetilde{C}_{7\gamma}^{eff}$ and $\widetilde{C}_{9V}^{eff}$ can be significant, but they tend to cancel each other; and (c) the T2HDM predictions for $Br(B \to X_s l^+ l^-)$ agree well with the measured value within one standard deviation.

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