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题名: Higgs sector in a U(1)
作者: Han, T ;  Langacker, P ;  McElrath, B
刊名: PHYSICAL REVIEW D
出版日期: 2004
卷号: 70, 期号:11, 页码:-
关键词: CHANGING NEUTRAL CURRENTS ;  RADIATIVE-CORRECTIONS ;  EXTRA U(1) ;  MU-PROBLEM ;  GAUGE STRUCTURES ;  DARK-MATTER ;  Z ;  MASSES ;  BOSON ;  SUPERGRAVITY
学科分类: Physics
通讯作者: Han, T , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
部门归属: Univ Wisconsin, Dept Phys, Madison, WI 53706 USA; Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA; Univ Calif Davis, Dept Phys, Davis, CA 95616 USA; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We consider the Higgs sector in an extension of the minimal supersymmetric standard model (MSSM) with extra SM singlets, involving an extra U(1)' gauge symmetry, in which the domain-wall problem is avoided and the effective mu parameter is decoupled from the new gauge boson Z(') mass. The model involves a rich Higgs structure very different from that of the MSSM. In particular, there are large mixings between Higgs doublets and the SM singlets, significantly affecting the Higgs spectrum, production cross sections, decay modes, existing exclusion limits, and allowed parameter range. Scalars considerably lighter than the CERN LEP2 bound (114 GeV) are allowed, and the range tanbetasimilar to1 is both allowed and theoretically favored. Phenomenologically, we concentrate our study on the lighter (least model-dependent, yet characteristic) Higgs particles with significant SU(2)-doublet components to their wave functions, for the case of no explicit CP violation in the Higgs sector. We consider their spectra, including the dominant radiative corrections to their masses from the top/stop loop. We computed their production cross sections and reexamine the existing exclusion limits at LEP2. We outline the searching strategy for some representative scenarios at a future linear collider. We emphasize that gaugino, Higgsino, and singlino decay modes are indicative of extended models and have been given little attention. We present a comprehensive list of model scenarios in the Appendices.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13960
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:
Han, T,Langacker, P,McElrath, B. Higgs sector in a U(1)[J]. PHYSICAL REVIEW D,2004,70(11):-.
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