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题名: Strongly first order phase transition in the singlet fermionic dark matter model after LUX
作者: Li, T ;  Zhou, YF
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2014
期号: 7, 页码:6
关键词: WEINBERG-SALAM THEORY ;  REAL HIGGS SINGLET ;  STANDARD-MODEL ;  ELECTROWEAK BARYOGENESIS ;  FINITE TEMPERATURE ;  BARYON ASYMMETRY ;  EARLY UNIVERSE ;  BOSON ;  LHC ;  SEARCH
学科分类: Physics
DOI: 10.1007/JHEP07(2014)006
通讯作者: Li, T (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Li, Tai ;  Zhou, Yu-Feng] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We investigate an extension of the standard model (SM) with a singlet fermionic dark matter (DM) particle which interacts with the SM sector through a real singlet scalar. The presence of a new scalar provides the possibility of generating a strongly first order phase transition needed for electroweak baryogenesis. Taking into account the latest Higgs search results at the LHC and the upper limits from the DM direct detection experiments especially that from the LUX experiment, and combining the constraints from the LEP experiment and the electroweak precision test, we explore the parameter space of this model which can lead to the strongly first order phase transition. Both the tree- and loop-level barriers are included in the calculations. We find that the allowed mass of the second Higgs particle is in the range similar to 30-350GeV. The allowed mixing angle a between the SM-like Higgs particle and the second Higgs particle is constrained to alpha <= 28 degrees. The DM particle mass is predicted to be in the range similar to 15-350GeV. The future XENON1T experiment can rule out a significant proportion of the parameter space of this model. The constraint can be relaxed only when the mass of the SM-like Higgs particle is degenerate with that of the second Higgs particle, or the mixing angle is small enough.
资助者: National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084, 11335012]; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000339109900001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15722
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Li, T,Zhou, YF. Strongly first order phase transition in the singlet fermionic dark matter model after LUX[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(7):6.
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