Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/77348
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Type: Journal article
Title: Search for contact interactions and large extra dimensions in dilepton events from pp collisions at √s=7 TeV with the ATLAS detector
Other Titles: Search for contact interactions and large extra dimensions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
Author: Jackson, P.
Soni, N.
White, M.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2013; 87(1):1-25
Publisher: American Physical Soc
Issue Date: 2013
ISSN: 1550-7998
1550-2368
Statement of
Responsibility: 
G. Aad ... P. Jackson ... et al. (ATLAS Collaboration)
Abstract: 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 √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 μ⁺μ⁻ 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.
Rights: © 2013 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0020126419
DOI: 10.1103/PhysRevD.87.015010
Appears in Collections:Chemistry and Physics publications

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