English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70548/70548 (100%)
Visitors : 23232923      Online Users : 206
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52882


    Title: Constraints on a new light spin-one particle from rare b -> s transitions
    Authors: Oh,S;Tandean,J
    Contributors: 物理學系
    Keywords: FORWARD-BACKWARD ASYMMETRY;GAUGE BOSON;DECAYS;MODEL;LOGARITHMS;MUON
    Date: 2011
    Issue Date: 2012-06-11 10:48:21 (UTC+8)
    Publisher: 國立中央大學
    Abstract: The anomalously large like-sign dimuon charge asymmetry in semileptonic b-hadron decays recently measured by the D0 Collaboration may be hinting at the presence of CP-violating new physics in the mixing of B(s) mesons. It has been suggested that the effect of a nonstandard spin-1 particle lighter than the b quark with flavor-changing couplings to b and s quarks can reproduce the D0 result within its one-sigma range. Here we explore the possibility that the new particle also couples to charged leptons l = e, mu and thus contributes to rare b -> s processes involving the leptons. We consider in particular constraints on its couplings from existing experimental data on the inclusive B -> X(s)l(+)l(-) and exclusive B -> K(()*())l(+)l(-) decays, as well as the anomalous magnetic moments of the leptons. We find that there is parameter space of the particle that is allowed by the current data. We discuss how future measurements of these B transitions and the rare decays of the B(s) meson, such as B(s) -> (phi, eta, eta')l(+)l(-) and B(s) -> l(+)l(-), at LHCb and next-generation B factories may probe its presence or couplings more stringently.
    Relation: PHYSICAL REVIEW D
    Appears in Collections:[物理學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML334View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明