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Article
Report number arXiv:1211.1150 ; CERN-PH-EP-2012-279 ; CERN-PH-EP-2012-279
Title Search for contact interactions and large extra dimensions in dilepton events from pp collisions at s = 7 TeV with the ATLAS detector
Related titleSearch for contact interactions and large extra dimensions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Mostrar todos os 2909 autores
Publication 2013-01-04
Imprint 07 Nov 2012
Number of pages 25
Note Comments: 12 pages plus author list (25 pages in total), 3 figures, 8 tables, submitted to Phys.Rev.D, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-17/
12 pages plus author list (25 pages in total), 3 figures, 8 tables, published in Phys.Rev.D 87, 015010 (2013), all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-17// revision corresponds to published version and corrects units for M_S in the legend of Figs. 2 and 3, as well as M_S limit values in the main text
In: Phys. Rev. D 87 (2013) 015010
DOI 10.1103/PhysRevD.87.015010
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; lepton production ; experimental results
Abstract A search for non-resonant 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 mu+mu- channels, respectively. No significant deviations from the Standard Model expectation are observed. Using a Bayesian approach, 95% confidence limit 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 2.3 to 3.9 TeV are also set on the string scale in large extra dimension models. After combination of these limits with results from a similar search in the diphoton channel, slightly more stringent limits are obtained.
Copyright/License preprint: © 2012-2024 CERN (License: CC-BY-3.0)
publication: © 2013-2024 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: tony.doyle@glasgow.ac.uk


 Record created 2012-11-07, last modified 2024-04-19


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