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Searching supersymmetric leptonic partner at the CERN LHC
Ke, JW; Luo, MX; 单连友;Shan, LY; Wang, K; Wang, LC
2013
发表期刊PHYSICS LETTERS B
卷号718期号:4-5页码:1334-1341
摘要Motivated by the observed excess of the di-photon signal in Higgs searches, sigma(gamma gamma)/sigma(SM) similar or equal to 1.5, we argue that models with enhanced Gamma(h -> gamma gamma) alone are the most favorable scenarios when the latest LHC/Tevatron results are all taken into account. We study the phenomenology of a supersymmetric scenario of light stau that predicts a 125 GeV SM-like Higgs boson with enhanced di-photon decay through light stau loops. Since it is extremely challenging to search the Drell-Yan stau pair at the LHC due to the small production rate, we focus on the parameter space with enhanced production of inclusive stau pairs, in particular, via b (b) over bar fusion or gaugino pairs. We study its phenomenology in both pure leptonic tau tau(+/-)(l) channels and hadronic tau tagged tau(h) channels. We find the same-sign dilepton from (chi) over tilde (+/-)(1) (chi) over tilde (0)(2) -> tau(+/-)(l)tau(+/-)(l) + X may significantly improve the discovery potential with even 7-8 TeV LHC of 0(30 fb(-1)) data. In the case of hadronic tau pair, we use the final state j + tau(h)tau(h) + is not an element of(T) to search and find that even with the most optimistic region of M-2 similar to 200-300 GeV, it requires at least 50 fb(-1) data of 14 TeV LHC to reach a significance of 3.5 sigma. Therefore, we conclude it is difficult to claim discovery only through hadronic tau based on the data by the 2012 shut-down. 5 sigma reach for our most optimistic region then requires 100 fb(-1) data with 14 TeV running. (C) 2012 Elsevier B.V. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2012.11.073
收录类别SCI
WOS记录号WOS:000314554300019
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224130
专题实验物理中心
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Ke, JW,Luo, MX,单连友;Shan, LY,et al. Searching supersymmetric leptonic partner at the CERN LHC[J]. PHYSICS LETTERS B,2013,718(4-5):1334-1341.
APA Ke, JW,Luo, MX,单连友;Shan, LY,Wang, K,&Wang, LC.(2013).Searching supersymmetric leptonic partner at the CERN LHC.PHYSICS LETTERS B,718(4-5),1334-1341.
MLA Ke, JW,et al."Searching supersymmetric leptonic partner at the CERN LHC".PHYSICS LETTERS B 718.4-5(2013):1334-1341.
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