Strongly first order phase transition in the singlet fermionic dark matter model after LUX

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	Strongly first order phase transition in the singlet fermionic dark matter model after LUX
	Zhou, YF
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	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
ISSN号	1029-8479
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.
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.
学科主题	Physics
收录类别	SCI
资助信息	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
原文出处	http://dx.doi.org/10.1007/JHEP07(2014)006
语种	英语
WOS记录号	WOS:000339109900001
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15722]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	Zhou, YF.(2014).Strongly first order phase transition in the singlet fermionic dark matter model after LUX.JOURNAL OF HIGH ENERGY PHYSICS(7),6.
MLA	Zhou, YF."Strongly first order phase transition in the singlet fermionic dark matter model after LUX".JOURNAL OF HIGH ENERGY PHYSICS .7(2014):6.