Testing naturalness at 100 TeV

doi:10.1007/JHEP09(2017)129

	Testing naturalness at 100 TeV
	Low, I; Chen, CR; Hajer, J; Liu, T; Zhang H(张昊); Zhang, H
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2017
期号	9 页码:129
关键词	Beyond Standard Model Higgs Physics Technicolor and Composite Models
ISSN号	1029-8479
DOI	10.1007/JHEP09(2017)129
文献子类	Article
英文摘要	Solutions to the electroweak hierarchy problem typically introduce a new symmetry to stabilize the quadratic ultraviolet sensitivity in the self-energy of the Higgs boson. The new symmetry is either broken softly or collectively, as for example in supersymmetric and little Higgs theories. At low energies such theories contain naturalness partners of the Standard Model fi elds which are responsible for canceling the quadratic divergence in the squared Higgs mass. Post the discovery of any partner-like particles, we propose to test the aforementioned cancellation by measuring relevant Higgs couplings. Using the fermionic top partners in little Higgs theories as an illustration, we construct a simpli fi ed model for naturalness and initiate a study on testing naturalness. After electroweak symmetry breaking, naturalness in the top sector requires alpha(T) = -lambda(2)(t) at leading order, where lambda(t) and alpha(T) are the Higgs couplings to a pair of top quarks and top partners, respectively. Using a multivariate method of Boosted Decision Tree to tag boosted particles in the Standard Model, we show that, with a luminosity of 30 ab(-1) at a 100TeV pp-collider, naturalness could be tested with a precision of 10% for a top partner mass up to 2.5TeV.
WOS关键词	SYMMETRY-BREAKING ; STANDARD MODEL ; ATLAS DETECTOR ; HIGGS-BOSON ; SEARCH ; LHC ; PHYSICS
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000412019300004
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284563]
专题	高能物理研究所_理论物理室高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Low, I,Chen, CR,Hajer, J,et al. Testing naturalness at 100 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(9):129.
APA	Low, I,Chen, CR,Hajer, J,Liu, T,张昊,&Zhang, H.(2017).Testing naturalness at 100 TeV.JOURNAL OF HIGH ENERGY PHYSICS(9),129.
MLA	Low, I,et al."Testing naturalness at 100 TeV".JOURNAL OF HIGH ENERGY PHYSICS .9(2017):129.