English  |  正體中文  |  简体中文  |  Items with full text/Total items : 67621/67621 (100%)
Visitors : 23078351      Online Users : 379
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/987654321/52905

    Title: Hidden Higgs boson at the LHC and light dark matter searches
    Authors: He,XG;Tandean,J
    Contributors: 物理學系
    Keywords: SCALAR;MODEL
    Date: 2011
    Issue Date: 2012-06-11 10:49:06 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Recent LHC searches have not found a clear signal of the Higgs boson h of the standard model (SM) with three or four families in the mass range m(h) = 120-600 GeV. If the Higgs had an unexpectedly large invisible branching ratio, the excluded mh regions would shrink. This can be realized in the simplest weakly interacting massive particle dark matter (DM) model, which is the SM plus a real gauge-singlet scalar field D as the DM, via the invisible mode h -> DD. Current data allow this decay to occur for D-mass values near, but below, m(h)/2 and those compatible with the light DM hypothesis. For such D masses, h -> DD can dominate the Higgs width depending on m(h), and thus sizable portions of the m(h) exclusion zones in the SM with three or four families may be recovered. Increased luminosity at the LHC may even reveal a Higgs having SM-like visible decays still hiding in the presently disallowed regions. The model also accommodates well the new possible DM hints from CRESST-II and will be further tested by improved data from future DM direct searches.
    Appears in Collections:[物理學系] 期刊論文

    Files in This Item:

    File Description SizeFormat

    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