ITP OpenIR  > 理论物理所2013年知识产出
On the Higgs fit and electroweak phase transition
Huang, WC; Shu, J; Zhang, Y; Huang, WC (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
2013
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1029-8479
期号3页码:164
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.
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
关键词Standard Model Boson Baryogenesis Lhc
学科领域Physics
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收录类别SCI
语种英语
WOS记录号WOS:000317522400076
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被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15406
专题理论物理所2013年知识产出
通讯作者Huang, WC (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
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Huang, WC,Shu, J,Zhang, Y,et al. On the Higgs fit and electroweak phase transition[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(3):164.
APA Huang, WC,Shu, J,Zhang, Y,&Huang, WC .(2013).On the Higgs fit and electroweak phase transition.JOURNAL OF HIGH ENERGY PHYSICS(3),164.
MLA Huang, WC,et al."On the Higgs fit and electroweak phase transition".JOURNAL OF HIGH ENERGY PHYSICS .3(2013):164.
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