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Type: Journal article
Title: Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
Other Titles: Search for contact interactions in dilepton events from pp collisions at root s = 7 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2012; 712(1-2):40-58
Publisher: Elsevier
Issue Date: 2012
ISSN: 0370-2693
Statement of
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)
Abstract: This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton–proton collisions produced by the LHC at √s = 7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb⁻¹ in the e⁺e⁻ and μ⁺μ⁻ channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ², the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ⁻>10.1 TeV (Λ⁺>9.4 TeV) in the electron channel and Λ⁻>8.0 TeV (Λ⁺>7.0 TeV) in the muon channel for constructive (destructive) interference in the left–left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ⁴.
Rights: © 2012 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND license. []
DOI: 10.1016/j.physletb.2012.04.026
Grant ID: ARC
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