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Guo, J; Kang, ZF; Kang, ZF (reprint author), Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea.
Higgs naturalness and dark matter stability by scale invariance
发表期刊NUCLEAR PHYSICS B
语种英语
摘要Extending the spacetime symmetries of standard model (SM) by scale invariance (SI) may address the Higgs naturalness problem. In this article we attempt to embed accidental dark matter (DM) into SISM, requiring that the symmetry protecting DM stability is accidental due to the model structure rather than imposed by hand. In this framework, if the light SM-like Higgs boson is the pseudo Goldstone boson of SI spontaneously breaking, we can even pine down the model, two-Higgs-doublets plus a real singlet: The singlet is the DM candidate and the extra Higgs doublet triggers electroweak symmetry breaking via the Coleman-Weinberg mechanism; Moreover, it dominates DM dynamics. We study spontaneously breaking of SI using the Gillard-Weinberg approach and find that the second doublet should acquire vacuum expectation value near the weak scale. Moreover, its components should acquire masses around 380 GeV except for a light CP-odd Higgs boson. Based on these features, we explore viable ways to achieve the correct relic density of DM, facing stringent constraints from direct detections of DM. For instance, DM annihilates into b (b) over bar near the SM-like Higgs boson pole, or into a pair of CP-odd Higgs boson with mass above that pole. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
2015
卷号898期号:0页码:415-430
学科领域Physics
DOIhttp://dx.doi.org/10.1016/j.nuclphysb.2015.07.014
收录类别SCI
项目资助者China Postdoctoral Science Foundation [2012M521136] ; China Postdoctoral Science Foundation [2012M521136] ; China Postdoctoral Science Foundation [2012M521136] ; China Postdoctoral Science Foundation [2012M521136]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20886
专题理论物理所科研产出_SCI论文
通讯作者Kang, ZF (reprint author), Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea.
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Guo, J,Kang, ZF,Kang, ZF . Higgs naturalness and dark matter stability by scale invariance[J]. NUCLEAR PHYSICS B,2015,898(0):415-430.
APA Guo, J,Kang, ZF,&Kang, ZF .(2015).Higgs naturalness and dark matter stability by scale invariance.NUCLEAR PHYSICS B,898(0),415-430.
MLA Guo, J,et al."Higgs naturalness and dark matter stability by scale invariance".NUCLEAR PHYSICS B 898.0(2015):415-430.
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