B→Xsl+l−decay in a top quark two-Higgs-doublet model

2006/05/31 by Zhen-Jun Xiao, Zhen-jun Xiao, Lin-xia Lü +1
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.74.034016

published as Phys.Rev.D74:034016,2006 · 18 pages, 8 eps figures, typos removed, final version appeared in PRD

openalex publication_date 2006/08/21 · arxiv created 2006/08/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We calculate the new physics contributions to the rare semileptonic decay B\ensuremath→X_sl⁺l^\ensuremath- (l=e,\ensuremathμ) 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 \stackrel\texttildelowC_i^eff(m_b) (i=7\ensuremathγ, 9V and 10A) in the T2HDM are always standard model-like; (b) the new physics contributions to \stackrel\texttildelowC_7\ensuremathγ^eff and \stackrel\texttildelowC_9V^eff can be significant in magnitude, but they tend to cancel each other; and (c) the T2HDM predictions for Br(B\ensuremath→X_sl⁺l^\ensuremath-) agree well with the measured value within 1 standard deviation.

Citations

• Determining the Sign of theb→sγAmplitude
• Comment on nonperturbative effects in
• Measurement of theB→Xsℓ+ℓ−Branching Fraction with a Sum over Exclusive Modes
• Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0
• CP-Violation in the Renormalizable Theory of Weak Interaction
• Improved measurement of the electroweak penguin processB→Xsℓ+ℓ−
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)