Higgs decay to goldstini and its observability at the LHC

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	Higgs decay to goldstini and its observability at the LHC
	Yang, JM
刊名	PHYSICS LETTERS B
	2013
卷号	726 期号:1-3 页码:228-233
关键词	BOSON COLLISIONS GRAVITINO PHOTON MASS
ISSN号	0370-2693
通讯作者	Yang, JM (reprint author), 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.
学科主题	Physics
收录类别	SCI
资助信息	DFG [SFB/TR 9]; National Natural Science Foundation of China [11275245, 10821504, 11135003]
原文出处	http://dx.doi.org/10.1016/j.physletb.2013.08.001
语种	英语
WOS记录号	WOS:000326482200027
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15270]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Yang, JM. Higgs decay to goldstini and its observability at the LHC[J]. PHYSICS LETTERS B,2013,726(1-3):228-233.
APA	Yang, JM.(2013).Higgs decay to goldstini and its observability at the LHC.PHYSICS LETTERS B,726(1-3),228-233.
MLA	Yang, JM."Higgs decay to goldstini and its observability at the LHC".PHYSICS LETTERS B 726.1-3(2013):228-233.