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题名: Constraints on the universal varying Yukawa couplings: from SM-like to fermiophobic
作者: Li, TJ ;  Wan, X ;  Wang, YK ;  Zhu, SH
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2012
期号: 9, 页码:86
关键词: HIGGS-BOSON ;  STANDARD MODEL ;  TEVATRON ;  LHC
学科分类: Physics
通讯作者: Li, TJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Li, Tianjun; Wang, You-kai] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Li, Tianjun; Wang, You-kai] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China KITPC, Beijing 100190, Peoples R China; [Li, Tianjun] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA; [Wan, Xia; Zhu, Shou-hua] Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China; [Wan, Xia; Zhu, Shou-hua] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China; [Zhu, Shou-hua] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
英文摘要: Varying the Standard Model (SM) fermion Yukawa couplings universally by a generic positive scale factor (F-Yu), we study the phenomenological fit to the current available experimental results for the Higgs boson search at hadron colliders. We point out that the Higgs production cross section and its decay branching ratio to gamma gamma can be varied oppositely by F-Yu to make their product almost invariant. Thus, our scenario and the SM Higgs are indistinguishable in the inclusive H > gamma gamma channel. The current measurements on direct Yukawa coupling strength in the H -> bb/tau tau channel are not precise enough to fix the scale factor F-Yu. The most promising is the vector-boson-fusion channel in which the CMS has already observed possible suppression effect on the Yukawa couplings. Further more, the global chi(2) fit of the experimental data can get the optimal value by introducing a suppression factor F-Yu similar to 1/2 on the Skl Yukawa couplings.
资助者: Natural Science Foundation of China [11075003, 10821504, 11075194, 11135003]; Postdoctoral Science Foundation of China [Y2Y2231B11]; DOE [DE-FG03-95-Er-40917]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000310341200054
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15035
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Li, TJ,Wan, X,Wang, YK,et al. Constraints on the universal varying Yukawa couplings: from SM-like to fermiophobic[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(9):86.
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