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题名: Asymmetric dark matter bound state
作者: Bi, XJ ;  Kang, ZF ;  Ko, P ;  Li, JM ;  Li, TJ
刊名: PHYSICAL REVIEW D
出版日期: 2017
卷号: 95, 期号:4, 页码:43540
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.95.043540
通讯作者: Bi, XJ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China. ;  Kang, ZF ;  Ko, P ;  Li, JM (reprint author), Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea. ;  Li, JM (reprint author), Univ Adelaide, Dept Phys, ARC Ctr Excellence Particle Phys Terascale, Adelaide, SA 5005, Australia. ;  Li, TJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We propose an interesting framework for asymmetric scalar dark matter (ADM), which has novel collider phenomenology in terms of an unstable ADM bound state (ADMonium) produced via Higgs portals. ADMonium is a natural consequence of the basic features of ADM: the (complex scalar) ADM is charged under a dark local U(1)(d) symmetry which is broken at a low scale and provides a light gauge boson X. The dark gauge coupling is strong and then ADM can annihilate away into X-pair effectively. Therefore, the ADM can form a bound state due to its large self-interaction via X mediation. To explore the collider signature of ADMonium, we propose that ADM has a two-Higgs doublet portal. The ADMonium can have a sizable mixing with the heavier Higgs boson, which admits a large cross section of ADMonium production associated with b (b) over bar. The resulting signature at the LHC depends on the decays of X. In this paper we consider a case of particular interest: pp -> b (b) over bar + ADMonium followed by ADMonium -> 2X -> 2e(+)e(-) where the electrons are identified as (un)converted photons. It may provide a competitive explanation to heavy di-photon resonance searches at the LHC.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
项目资助者: Natural Science Foundation of China [11475191, 11135009, 11135003, 11275246, 11475238] ;  National Research Foundation of Korea (NRF) Research Grant [NRF-2015R1A2A1A05001869] ;  SRC program of NRF Grant - MEST through Korea Neutrino Research Center (KNRC) at Seoul National University [20120001176]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22119
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Bi, XJ,Kang, ZF,Ko, P,et al. Asymmetric dark matter bound state[J]. PHYSICAL REVIEW D,2017,95(4):43540.
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