Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel

doi:10.1103/PhysRevD.100.075035

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	Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel
	Li, Hao-Lin ; Ramsey-Musolf, Michael J.; Willocq, Stephane 7
刊名	PHYSICAL REVIEW D
	2019
卷号	100 期号:7 页码:75035
关键词	PP COLLISIONS PAIR PRODUCTION SEARCH TEV WW
ISSN号	2470-0010
DOI	10.1103/PhysRevD.100.075035
英文摘要	We investigate the prospective reach of the 14 TeV HL-LHC for resonant production of a heavy Higgs boson that decays to two SM-like Higgs bosons in the 4b final state in the scalar singlet extended Standard Model. We focus on the reach for choices of parameters yielding a strong first order electroweak phase transition. The event selection follows the 4b analysis by the ATLAS Collaboration, enhanced with the use of a boosted decision tree method to optimize the discrimination between signal and background events. The output of the multivariate discriminant is used directly in the statistical analysis. The prospective reach of the 4b channel is compatible with previous projections for the bb gamma gamma and 4 tau channels for heavy Higgs boson mass m(2) below 500 GeV and superior to these channels for m(2) > 500 GeV. With 3 ab(-1) of integrated luminosity, it is possible to discover the heavy Higgs boson in the 4b channel for m(2) < 500 GeV in regions of parameter space yielding a strong first order electroweak phase transition and satisfying all other phenomenological constraints.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27060]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Massachusetts, Dept Phys, Amherst Ctr Fundamental Interact, Amherst, MA 01003 USA 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.[Ramsey-Musolf, Michael J.] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, X Dongchuan Rd, Shanghai 200240, Peoples R China 4.[Ramsey-Musolf, Michael J.] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA 5.[Ramsey-Musolf, Michael J.] Shanghai Jiao Tong Univ, Sch Phys & Astron, X Dongchuan Rd, Shanghai 200240, Peoples R China 6.[Li, Hao-Lin 7.Ramsey-Musolf, Michael J.
推荐引用方式 GB/T 7714	Li, Hao-Lin,Ramsey-Musolf, Michael J.,Willocq, Stephane. Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel[J]. PHYSICAL REVIEW D,2019,100(7):75035.
APA	Li, Hao-Lin,Ramsey-Musolf, Michael J.,&Willocq, Stephane.(2019).Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel.PHYSICAL REVIEW D,100(7),75035.
MLA	Li, Hao-Lin,et al."Probing a scalar singlet-catalyzed electroweak phase transition with resonant di-Higgs boson production in the 4b channel".PHYSICAL REVIEW D 100.7(2019):75035.