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Search for contact interactions and large extra dimensions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
ATLAS collaboration
2013
发表期刊PHYSICAL REVIEW D
卷号87期号:1
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要A search for nonresonant new phenomena, originating from either contact interactions or large extra spatial dimensions, has been carried out using events with two isolated electrons or muons. These events, produced at the LHC in proton-proton collisions at root s = 7 TeV, were recorded by the ATLAS detector. The data sample, collected throughout 2011, corresponds to an integrated luminosity of 4.9 and 5.0 fb(-1) in the e(+)e(-) and mu(+)mu(-) channels, respectively. No significant deviations from the Standard Model expectation are observed. Using a Bayesian approach, 95% confidence level lower limits ranging from 9.0 to 13.9 TeV are placed on the energy scale of llqq contact interactions in the left-left isoscalar model. Lower limits ranging from 2.4 to 3.9 TeV are also set on the string scale in large extra dimension models. After combining these limits with results from a similar search in the diphoton channel, slightly more stringent limits are obtained. DOI: 10.1103/PhysRevD.87.015010
关键词FERMION-PAIR PRODUCTION PARTON DISTRIBUTIONS COMPOSITENESS SCALES E(+)E(-) COLLISIONS STANDARD MODEL CROSS-SECTION LEP ENERGIES PHYSICS QUARK HERA
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.87.015010
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000313160300006
引用统计
被引频次:36[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/311005/213431
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 contact interactions and large extra dimensions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector[J]. PHYSICAL REVIEW D,2013,87(1).
APA ATLAS collaboration.(2013).Search for contact interactions and large extra dimensions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector.PHYSICAL REVIEW D,87(1).
MLA ATLAS collaboration."Search for contact interactions and large extra dimensions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector".PHYSICAL REVIEW D 87.1(2013).
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