Singlet-Doublet dark matter freeze-in: LHC displaced signatures versus cosmology

doi:10.1007/JHEP09(2018)037

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	Singlet-Doublet dark matter freeze-in: LHC displaced signatures versus cosmology
	Calibbi, L ; Lopez-Honorez, L ; Lowette, S 3; Mariotti, A 2,3
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	9 页码:37
关键词	LYMAN-ALPHA FOREST STERILE NEUTRINOS LAMBDA-CDM RADIATION INTERACTIONS SATELLITE GALAXIES MODELS HALOES SEARCHES MILKY PHENOMENOLOGY
ISSN号	1029-8479
DOI	10.1007/JHEP09(2018)037
英文摘要	We study the Singlet-Doublet dark matter model in the regime of feeble couplings, where the dark matter abundance is obtained via the freeze-in mechanism. As a consequence of the small couplings, the heavier particles in the model are long-lived with decay length at typical scales of collider experiments. We analyse the collider signatures of the model, characterised by displaced h and Z bosons plus missing momentum, employing current LHC searches for displaced vertices and missing energy to significantly constrain the parameter space of the model. We also take into account the cosmological bounds relevant for our light dark matter candidate arising from Lyman-alpha forest constraints. Our analysis emphasises the interplay between displaced signatures at the LHC and cosmology for dark matter candidates whose relic abundance is obtained through the freeze-in mechanism.
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/311006/22822]
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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Libre Bruxelles, Serv Phys Theor, CP 225, B-1050 Brussels, Belgium 3.Vrije Univ Brussel, Theoret Nat Kunde, Pl Laan 2, B-1050 Brussels, Belgium 4.Vrije Univ Brussel, Interuniv Inst High Energies, Pl Laan 2, B-1050 Brussels, Belgium
推荐引用方式 GB/T 7714	Calibbi, L,Lopez-Honorez, L,Lowette, S,et al. Singlet-Doublet dark matter freeze-in: LHC displaced signatures versus cosmology[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(9):37.
APA	Calibbi, L,Lopez-Honorez, L,Lowette, S,&Mariotti, A.(2018).Singlet-Doublet dark matter freeze-in: LHC displaced signatures versus cosmology.JOURNAL OF HIGH ENERGY PHYSICS(9),37.
MLA	Calibbi, L,et al."Singlet-Doublet dark matter freeze-in: LHC displaced signatures versus cosmology".JOURNAL OF HIGH ENERGY PHYSICS .9(2018):37.