Note on 125 GeV spin-2 particle

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	Note on 125 GeV spin-2 particle
	Wu, YL
刊名	PHYSICS LETTERS B
	2013
卷号	719 期号:1-3 页码:164-169
关键词	STANDARD MODEL HIGGS-BOSON LHC DECAYS DIMENSIONS HIERARCHY MASS
ISSN号	0370-2693
通讯作者	Geng, CQ (reprint author), Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
英文摘要	A new boson around 125 GeV without specific spin has been observed by both ATLAS and CMS at the LHC. Since its decay into a diphoton excludes the spin-1 case by the Landau-Yang theorem, it leaves 0 or 2 as the possible lowest spin for the new boson. Instead of the well-established spin-0 Higgs-like boson, we take this new boson to be a spin-2 massive graviton-like particle denoted as G, which exists copiously in extra-dimension theories, and concentrate on its phenomenology. In particular, we calculate the three-body decays of G -> Vf (f) over bar' with V and f((')) the gauge boson and fermions in the standard model (SM) and compare our results with those of the SM Higgs boson. The couplings between G and Vs are also estimated by fitting the data. A new observable that can distinguish G from the Higgs is proposed. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	Physics
收录类别	SCI
资助信息	National Center for Theoretical Science and National Science Council [NSC-98-2112-M-007-008-MY3, NSC-101-2112-M-007-006-MY3]; National Science Foundation of China (NSFC) [10821504, 10975170]; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science
原文出处	http://dx.doi.org/10.1016/j.physletb.2013.01.016
语种	英语
WOS记录号	WOS:000315065600025
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15417]
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	Wu, YL. Note on 125 GeV spin-2 particle[J]. PHYSICS LETTERS B,2013,719(1-3):164-169.
APA	Wu, YL.(2013).Note on 125 GeV spin-2 particle.PHYSICS LETTERS B,719(1-3),164-169.
MLA	Wu, YL."Note on 125 GeV spin-2 particle".PHYSICS LETTERS B 719.1-3(2013):164-169.