Rare decaysBs→l+l−andB→Kl+l−in the topcolor-assisted technicolor model

2009/01/31 by Wei Liu, C. X. Yue, Chong-Xing Yue +2
Medicine · Physics and Astronomy · #Algorithm #Computer science #Dark Matter and Cosmic Phenomena #Medical Imaging Techniques and Applications #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.79.034008

published as Phys.Rev.D79:034008,2009 · 29 pages, 9 figure, corrected typos, the version to appear in PRD

openalex publication_date 2009/02/10 · arxiv created 2009/05/30 · arxiv updated 2014/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We examine the rare decays B_s\ensuremath→l⁺l^\ensuremath- and B\ensuremath→Kl⁺l^\ensuremath- in the framework of the topcolor-assisted technicolor (TC2) model. The contributions of the new particles predicted by this model to these rare decay processes are evaluated. We find that the values of their branching ratios are larger than the standard model predictions by one order of magnitude in wide range of the parameter space. The longitudinal polarization asymmetry of leptons in B_s\ensuremath→l⁺l^\ensuremath- can approach O(10^\ensuremath-2). The forward-backward asymmetry of leptons in B\ensuremath→Kl⁺l^\ensuremath- is not large enough to be measured in future experiments. We also give some discussions about the branching ratios and the asymmetry observables related to these rare decay processes in the littlest Higgs model with T-parity.

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