Hidden Higgs boson at the LHC and light dark matter searches

NCU Institutional Repository > 理學院 > 物理學系 > 期刊論文 > Item 987654321/52905

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/52905

題名:	Hidden Higgs boson at the LHC and light dark matter searches
作者:	He,XG;Tandean,J
貢獻者:	物理學系
關鍵詞:	SCALAR;MODEL
日期:	2011
上傳時間:	2012-06-11 10:49:06 (UTC+8)
出版者:	國立中央大學
摘要:	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.
關聯:	PHYSICAL REVIEW D
顯示於類別:	[物理學系] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	307	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing