LHC search of new Higgs boson via resonant di-Higgs production with decays into 4W

被引：25

作者：

Ren, Jing ^{[1
]}

Xiao, Rui-Qing ^{[2
,3
,4
]}

Zhou, Maosen ^{[5
,6
]}

Fang, Yaquan ^{[5
,6
]}

He, Hong-Jian ^{[2
,3
,7
,8
,9
]}

Yao, Weiming ^{[4
]}

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[2] Tsinghua Univ, Inst Modern Phys, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China

[4] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[5] Inst High Energy Phys, Beijing 100049, Peoples R China

[6] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[7] TD Lee Inst, Shanghai 200240, Peoples R China

[8] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China

[9] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Beyond Standard Model; Higgs Physics; ELECTROWEAK SYMMETRY-BREAKING; EQUIVALENCE THEOREM; PRECISE FORMULATION; STANDARD MODEL; PROGRAM; BOUNDS; SIGNATURES; ANATOMY; SCALAR;

D O I：

10.1007/JHEP06(2018)090

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Searching for new Higgs particle beyond the observed light Higgs boson h(0)(125 GeV) will unambiguously point to new physics beyond the standard model. We study the resonant production of a CP-even heavy Higgs state H-0 in the di-Higgs channel, g g -> H-0 -> h(0)h(0) -> WW*WW*, at the LHC Run-2 and the high luminosity LHC (HL- LHC). We analyze two types of the 4W decay modes, one with the same-sign di-leptons (4W -> l(+/-)vl(+/-)v4q) and the other with tri-leptons (4W -> l(+/-)vl(-/+)vl(+/-)v2q). We perform a full simulation for the signals and backgrounds, and estimate the discovery potential of the heavy Higgs state at the LHC Run-2 and the HL-LHC, in the context of generic twoHiggs-doublet models (2HDM). We determine the viable parameter space of the 2HDM as allowed by the theoretical constraints and the current experimental limits. We systematically analyze the allowed parameter space of the 2HDM which can be effectively probed by the heavy Higgs searches of the LHC, and further compare this with the viable parameter region under the current theoretical and experimental bounds.

引用

页数：37

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