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题名: Higgs decay to goldstini and its observability at the LHC
作者: Liu, T ;  Wang, L ;  Yang, JM
刊名: PHYSICS LETTERS B
出版日期: 2013
卷号: 726, 期号:1-3, 页码:228-233
关键词: BOSON ;  COLLISIONS ;  GRAVITINO ;  PHOTON ;  MASS
学科分类: Physics
通讯作者: Yang, JM (reprint author), Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Liu, Tao; Wang, Lin] Karlsruhe Inst Technol, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany; [Yang, Jin Min] Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: If supersymmetry is broken independently in multiple sectors with different scales, a number of goldstinos will be generated. One linear combination of these goldstinos is massless and eaten by the gravitino, while the orthogonal combinations acquire a tree-level mass and become the physical states named goldstini (G'). Compared to the gravitino, such goldstini could couple more strongly to the visible fields and lead to some exotic phenomenology. In this note we first check the goldstini couplings in some GMSB models and find that the goldstini-photon-neutralino interaction may be very small while the goldstini-Z-neutralino and goldstini-Higgs-neutralino interactions may be sizable. This can induce a new decay mode for the Higgs boson: h -> G' + chi -> Z + 2G'. Then in an effective model with conservative fixed parameters we study the observability of this decay channel at the LHC and find that it is not accessible at the finished 8 TeV run (25 fb(-1)) or 14 TeV run with 100 fb(-1), but might be observed at the high luminosity LHC (14 TeV, 1000-3000 fb(-1)) if the systematics of the backgrounds can be well understood. (C) 2013 Elsevier B.V. All rights reserved.
资助者: DFG [SFB/TR 9]; National Natural Science Foundation of China [11275245, 10821504, 11135003]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000326482200027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15270
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Liu, T,Wang, L,Yang, JM. Higgs decay to goldstini and its observability at the LHC[J]. PHYSICS LETTERS B,2013,726(1-3):228-233.
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