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题名: Explanation of the ATLAS Z-peaked excess by squark pair production in the NMSSM
作者: Cao, JJ;  Shang, LL;  Yang, JM;  Zhang, Y
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2015
期号: 10, 页码:178
关键词: Supersymmetry Phenomenology
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP10(2015)178
通讯作者: Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
文章类型: Article
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.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: SEARCH ;  BOSON
收录类别: SCI
项目资助者: National Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11121064, 11135003, 90103013, 11275245] ;  CAS Center for Excellence in Particle Physics (CCEPP)
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20811
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
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.
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