2008/07/28 by Xiao-Fang Han, Lei Wang, Jin Min Yang · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.78.075017
published as Phys.Rev.D78:075017,2008 · 13 pages, 3 figures
arxiv created 2008/07/28 · openalex publication_date 2008/10/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In the littlest Higgs model with T-parity new flavor-changing interactions between mirror fermions and the standard model (SM) fermions can induce various flavor-changing neutral-current decays for B-mesons, the Z-boson, and the Higgs boson. Since all these decays induced in the littlest Higgs with T-parity model are correlated, in this work we perform a collective study for these decays, namely, the Z-boson decay Z\ensuremath→bs, the Higgs-boson decay h\ensuremath→bs, and the B-meson decays B\ensuremath→Xs\ensuremathγ, Bs\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-, and B\ensuremath→Xs\ensuremathμ+\ensuremathμ^\ensuremath-. We find that under the current experimental constraints from the B-decays, the branching ratios of both Z\ensuremath→bs and h\ensuremath→bs can still deviate from the SM predictions significantly. In the parameter space allowed by the B-decays, the branching ratio of Z\ensuremath→bs can be enhanced up to 10^\ensuremath-7 (about one order above the SM prediction) while h\ensuremath→bs can be much suppressed relative to the SM prediction (about one order below the SM prediction).