Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
2012 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 712, no 1-2, 40-58 p.Article in journal (Refereed) Published
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,root 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 mu(+)mu(-) channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/A(2), the following 95% CL lower limits are placed on the energy scale of llqq contact interactions: A(-) > 10.1 TeV (A(+) > 9.4 TeV) in the electron channel and A(-) > 8.0 TeV (A(+) > 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/A(4).
Place, publisher, year, edition, pages
2012. Vol. 712, no 1-2, 40-58 p.
IdentifiersURN: urn:nbn:se:uu:diva-182921DOI: 10.1016/j.physletb.2012.04.026ISI: 000304742500006OAI: oai:DiVA.org:uu-182921DiVA: diva2:561379
ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1016/j.physletb.2012.04.0262012-10-182012-10-182012-10-18Bibliographically approved