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题名: Light A physics in the lepton-specific two-Higgs doublet model
作者: Cao JunJie ;  Heng ZhaoXia ;  Wan PeiHua
刊名: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期: 2010
卷号: 53, 期号:11, 页码:1981-1987
关键词: E(+)E(-) COLLISIONS ;  HIGGS SCALARS ;  OPAL DETECTOR ;  SEARCH ;  BOSONS
学科分类: Physics
通讯作者: Cao, JJ , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China
部门归属: [Cao, JJ; Wan, PH] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China; [Heng, ZX] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Heng, ZX] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: We examine various direct and indirect constraints on the lepton-specific two-Higgs doublet model and discuss its phenomenology at colliders in the allowed parameter space. The constraints we consider come from the precision electroweak data, the direct search for Higgs boson, the muon anomalous magnetic moment, as well as some theoretical consistency requirements. We find that in the allowed parameter space the CP-odd Higgs boson A is rather light (m (A) < 30 GeV with 95% possibility), which is composed dominantly by the leptonic Higgs and decays dominantly into tau (+) tau (-); while the SM-like Higgs boson h (responsible largely for electroweak symmetry breaking) decays dominantly in the mode h -> AA -> 4 tau with a large decay width, which will make the Higgs discovery more difficult at the LHC. Whereas, this scenario predicts rare Z decays Z -> AAA and Z -> tau (+) tau (-) A with their branching ratios ranging from 10(-8) to 10(-3) and 10(-5) to 10(-4) respectively, which may be accessible at the GigaZ option of the ILC.
资助者: National Natural Science Foundation of China (NNSFC)[10505007, 10821504, 10725526, 10635030]; HASTIT[2009HASTIT004]; Chinese Academy of Sciences[KJCX2.YW.W10]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000283558000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5015
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cao JunJie,Heng ZhaoXia,Wan PeiHua. Light A physics in the lepton-specific two-Higgs doublet model[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53(11):1981-1987.
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