Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM

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	Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM
	Cao, JJ; Shang, LL; Yang, JM; Zhang, Y
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
期号	10 页码:178
关键词	Supersymmetry Phenomenology
通讯作者	Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
英文摘要	The ATLAS collaboration recently reported a 3 sigma excess in the leptonic-Z + jets + E-T(miss) channel. We intend to interpret this excess by squark pair production in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). The decay chain we employ is (q) over tilde -> q (chi) over tilde (0)(2) -> q (chi) over tilde (0)(1)Z, where (chi) over tilde (0)(1) and (chi) over tilde (0)(2) denote the lightest and the next-to-lightest neutralinos with singlino and bino as their dominant components respectively. Our simulations indicate that after considering the constraints from the ATLAS searches for jets + E-T(miss) signal the central value of the excess can be obtained for m((q) over tilde) less than or similar to 1.2TeV, and if the constraint from the CMS on-Z search is further considered, more than 10 signal events are still attainable for m((q) over tilde) less than or similar to 750GeV. Compared with the interpretation by gluino pair production, the squark explanation allows for a significantly wider range of m((q) over tilde) as well as a less compressed SUSY mass spectrum. We also show that the squark explanation will be readily tested at the initial stage of the 14TeV LHC.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
关键词[WOS]	SEARCH ; BOSON
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20811]
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	Cao, JJ,Shang, LL,Yang, JM,et al. Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015(10):178.
APA	Cao, JJ,Shang, LL,Yang, JM,&Zhang, Y.(2015).Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM.JOURNAL OF HIGH ENERGY PHYSICS(10),178.
MLA	Cao, JJ,et al."Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM".JOURNAL OF HIGH ENERGY PHYSICS .10(2015):178.