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Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector
ATLAS collaboration
2014
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号6
通讯作者Aad, G (reprint author), Aix Marseille Univ, CPPM, Marseille, France.
摘要A search is presented for direct top-squark pair production in final states with two leptons (electrons or muons) of opposite charge using 20.3 fb(-1) of pp collision data at root s = 8 TeV, collected by the ATLAS experiment at the Large Hadron Collider in 2012. No excess over the Standard Model expectation is found. The results are interpreted under the separate assumptions (i) that the top squark decays to a b-quark in addition to an on-shell chargino whose decay occurs via a real or virtual W boson, or (ii) that the top squark decays to a t-quark and the lightest neutralino. A top squark with a mass between 150 GeV and 445 GeV decaying to a b-quark and an on-shell chargino is excluded at 95% confidence level for a top squark mass equal to the chargino mass plus 10 GeV, in the case of a 1 GeV lightest neutralino. Top squarks with masses between 215 (90) GeV and 530 (170) GeV decaying to an on-shell (off-shell) t-quark and a neutralino are excluded at 95% confidence level for a 1 GeV neutralino.
关键词HADRON COLLIDERS SUPERGAUGE TRANSFORMATIONS PARTON DISTRIBUTIONS MEASURING MASSES SUPERSYMMETRY PARTICLE MODEL QUARK CURRENTS PIONS
学科领域Physics
DOI10.1007/JHEP06(2014)124
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000338346400001
引用统计
被引频次:62[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/311005/213732
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(6).
APA ATLAS collaboration.(2014).Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(6).
MLA ATLAS collaboration."Search for direct top-squark pair production in final states with two leptons in pp collisions at root s=8 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .6(2014).
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