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Type: Journal article
Title: Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at √s = 8TeV with the ATLAS detector
Other Titles: Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at root s = 8TeV with the ATLAS detector
Author: ATLAS Collaboration
Aad, G.
Citation: European Physical Journal C: Particles and Fields, 2014; 74(12):3134-1-3134-25
Publisher: Springer Verlag
Issue Date: 2014
ISSN: 1434-6052
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (ATLAS Collaboration)
Abstract: A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset recorded by the ATLAS detector is used, corresponding to 20 fb−1 at s√ = 8 TeV. The dilepton invariant mass spectrum is a discriminating variable in both searches, with the contact interaction search additionally utilizing the dilepton forward-backward asymmetry. No significant deviations from the Standard Model expectation are observed. Lower limits are set on the ℓℓqq contact interaction scale Λ between 15.4 TeV and 26.3 TeV, at the 95 % credibility level. For large extra spatial dimensions, lower limits are set on the string scale MS between 3.2 TeV to 5.0 TeV.
Keywords: ATLAS Collaboration
Rights: © CERN for the benefit of the ATLAS collaboration 2014 This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.
DOI: 10.1140/epjc/s10052-014-3134-6
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