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Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in root s=8 TeV pp collisions with the ATLAS detector
ATLAS collaboration
2013
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号10
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb(-1) of pp collisions at root s = 8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ((b) over tilde (1) and (t) over tilde (1) respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95% confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The (b) over tilde (1) is assumed to decay via (b) over tilde (1) -> b (chi) over tilde (0)(1) and the (t) over tilde (1) via (t) over tilde (1) b (chi) over tilde (+/-)(1), with undetectable products of the subsequent decay of the (chi) over tilde (+/-)(1) due to the small mass splitting between the (chi) over tilde (+/-)(1) and the (chi) over tilde (0)(1)
关键词DYNAMICAL SYMMETRY-BREAKING SUPERGAUGE TRANSFORMATIONS SUPERSYMMETRY MODEL PARTICLE CURRENTS LEPTONS MASSES QUARKS PIONS
学科领域Physics
DOI10.1007/JHEP10(2013)189
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000326296900004
引用统计
被引频次:53[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/311005/213618
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 third-generation squark pair production in final states with missing transverse momentum and two b-jets in root s=8 TeV pp collisions with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(10).
APA ATLAS collaboration.(2013).Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in root s=8 TeV pp collisions with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(10).
MLA ATLAS collaboration."Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in root s=8 TeV pp collisions with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .10(2013).
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