Higgs and Z-boson FCNC decays correlated with B-meson decays in littlest Higgs model with T-parity

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dc.creatorHan, Xiao-Fang
dc.creatorWang, Lei
dc.creatorYang, Jin Min
dc.date2008-07-28
dc.date.accessioned2026-07-07T11:45:09Z
dc.date.available2026-07-07T11:45:09Z
dc.descriptionIn the littlest Higgs model with T-parity (LHT) new flavor-changing interactions between mirror fermions and the Standard Model (SM) fermions can induce various FCNC decays for B-mesons, Z-boson and Higgs boson. Since all these decays induced in the LHT model are correlated, we in this work perform a collective study for these decays, namely the Z-boson decay Z -> b s_bar, the Higgs boson decay h -> b s_bar, and the B-meson decays B -> X_s γ, B_s -> μ^+μ^- and B -> X_s μ^+ μ^-. We find that under the current experimental constraints from the B-decays, the branching ratios of both Z -> b s_bar and h -> b s_bar can still deviate from the SM predictions significantly. In the parameter space allowed by the B-decays, the branching ratio of Z -> b s_bar can be enhanced to 10^{-7} (about one order above the SM prediction) while h -> b s_bar can be much suppressed relative to the SM prediction (about one order below the SM prediction).
dc.description13 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0807.4480
dc.identifierhttp://arxiv.org/abs/0807.4480
dc.identifierPhys.Rev.D78:075017,2008
dc.identifierdoi:10.1103/PhysRevD.78.075017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201791
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHiggs and Z-boson FCNC decays correlated with B-meson decays in littlest Higgs model with T-parity
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