Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons

doi:http://dx.doi.org/10.1142/S0217732316501789

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	Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons
	Han, XF; Wang, L; Yang, JM; Wang, L (reprint author), Yantai Univ, Dept Phys, Yantai 264005, Peoples R China.
刊名	MODERN PHYSICS LETTERS A
	2016
卷号	31 期号:31 页码:1650178
关键词	Two-higgs-doublet Model Higgs Lhc
DOI	http://dx.doi.org/10.1142/S0217732316501789
英文摘要	We discuss a scenario of the type-II two-Higgs- doublet model (2HDM) in which the b (b) over bar gamma gamma rate of the Higgs pair production is enhanced due to the two nearly degenerate 125 GeV Higgs bosons ( h, H). Considering various theoretical and experimental constraints, we figure out the allowed ranges of the trilinear couplings of these two Higgs bosons and calculate the signal rate of b (b) over bar gamma gamma from the productions of Higgs pairs (hh, hH, HH) at the large hadron collider (LHC). We find that in the allowed parameter space some trilinear Higgs couplings can be larger than the Standard Model (SM) value by an order and the production rate of b _ b.. can be greatly enhanced. We also consider a "decoupling" benchmark point where the light CP-even Higgs has a SM-like cubic self-coupling while other trilinear couplings are very small. With a detailed simulation on the b (b) over bar gamma gamma signal and backgrounds, we find that in such a "decoupling" scenario the hh and hH channels can jointly enhance the statistical significance to 5 sigma at 14 TeV LHC with an integrated luminosity of 3000 fb(-1).
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21509]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Wang, L (reprint author), Yantai Univ, Dept Phys, Yantai 264005, Peoples R China.
推荐引用方式 GB/T 7714	Han, XF,Wang, L,Yang, JM,et al. Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons[J]. MODERN PHYSICS LETTERS A,2016,31(31):1650178.
APA	Han, XF,Wang, L,Yang, JM,&Wang, L .(2016).Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons.MODERN PHYSICS LETTERS A,31(31),1650178.
MLA	Han, XF,et al."Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons".MODERN PHYSICS LETTERS A 31.31(2016):1650178.