Little Higgs theory confronted with the LHC Higgs data

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	Little Higgs theory confronted with the LHC Higgs data
	Yang, JM
刊名	PHYSICAL REVIEW D
	2013
卷号	87 期号:5 页码:55004
关键词	STANDARD MODEL BOSON PARTICLE PHYSICS DECAYS SIGNAL FLAVOR NMSSM MSSM MASS
ISSN号	1550-7998
通讯作者	Han, XF (reprint author), Yantai Univ, Dept Phys, Yantai 264005, Peoples R China.
英文摘要	We confront the little Higgs theory with the LHC Higgs search data (up to 17 fb(-1) of the combined 7 and 8 TeV run). Considering some typical models, namely, the littlest Higgs model, the littlest Higgs model with T parity (LHT-A and LHT-B), and the simplest little Higgs model, we scan over the parameter space in the region allowed by current experiments. We find that in these models the inclusive and exclusive (via gluon-gluon fusion) diphoton and ZZ* signal rates of the Higgs boson are always suppressed and approach the standard model predictions for a large-scale f. Thus, the ZZ* signal rate is within the 1 sigma range of the experimental data while the inclusive diphoton signal rate is always outside the 2 sigma range. Especially, in the LHT-A the diphoton signal rate is outside the 3 sigma range of the experimental data for f < 800 GeV. We also perform a global chi(2) fit to the available LHC and Tevatron Higgs data, and find that these models provide no better global fit to the whole data set (only for some special channels a better fit can be obtained, especially in the LHT-B). DOI: 10.1103/PhysRevD.87.055004
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China (NNSFC) [11105116, 11005089, 11275245, 10821504, 11135003, 11175151]
原文出处	http://dx.doi.org/10.1103/PhysRevD.87.055004
语种	英语
WOS记录号	WOS:000315737200007
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15403]
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. Little Higgs theory confronted with the LHC Higgs data[J]. PHYSICAL REVIEW D,2013,87(5):55004.
APA	Yang, JM.(2013).Little Higgs theory confronted with the LHC Higgs data.PHYSICAL REVIEW D,87(5),55004.
MLA	Yang, JM."Little Higgs theory confronted with the LHC Higgs data".PHYSICAL REVIEW D 87.5(2013):55004.