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题名: Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons
作者: Han, XF ;  Wang, L ;  Yang, JM
刊名: MODERN PHYSICS LETTERS A
出版日期: 2016
卷号: 31, 期号:31, 页码:1650178
关键词: Two-Higgs-doublet model ;  Higgs ;  LHC
学科分类: Physics
DOI: http://dx.doi.org/10.1142/S0217732316501789
通讯作者: Wang, L (reprint author), Yantai Univ, Dept Phys, Yantai 264005, Peoples R China.
文章类型: Article
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).
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields ;  Physics, Mathematical
关键词[WOS]: LHC ;  PHENOMENOLOGY ;  EXCESS
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11575152, 11275245, 10821504, 11135003] ;  Spanish Government ;  ERDF funds from the EU Commission [FPA2014-53631-C2-1-P, SEV-2014-0398, FPA2011-23778]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21509
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Han, XF,Wang, L,Yang, JM. Higgs pair signal enhanced in the 2HDM with two degenerate 125 GeV Higgs bosons[J]. MODERN PHYSICS LETTERS A,2016,31(31):1650178.
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