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题名: On the Higgs fit and electroweak phase transition
作者: Huang, WC ;  Shu, J ;  Zhang, Y
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2013
期号: 3, 页码:164
关键词: STANDARD MODEL ;  BOSON ;  BARYOGENESIS ;  LHC
学科分类: Physics
通讯作者: Huang, WC (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Huang, Weicong; Shu, Jing] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Huang, Weicong; Shu, Jing] Chinese Acad Sci, Kavli Inst Theoret Phys China, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhang, Yue] Abdus Salaam Int Ctr Theoret Phys, I-34014 Trieste, Italy
英文摘要: We consider the Higgs portal through which light scalars contribute both to the Higgs production and decay and Higgs effective potential at finite temperature via quantum loops. The positive Higgs portal coupling required by a strongly first order electroweak phase transition is disfavored by the current Higgs data if we consider one such scalar. We observe that by introducing a second scalar with negative Higgs portal coupling, one can not only improve the Higgs fits, but also enhance the strength of first order EWPT. We apply this mechanism to the light stop scenario for electroweak baryogenesis in the MSSM and find a light sbottom could play the role as the second scalar, which allows the stop to be relatively heavier. Non-decoupled effects on the Higgs or sbottom self-interactions from physics beyond MSSM are found to be indispensable for this scenario to work. A clear prediction from the picture is the existence of a light sbottom (below 200 GeV) and a light stop (can be as heavy as 140 GeV), which can be directly tested in the near future.
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000317522400076
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15406
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Huang, WC,Shu, J,Zhang, Y. On the Higgs fit and electroweak phase transition[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(3):164.
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