| Authors | G. Aad, . et al, S. Bentvelsen, A.P. Colijn, A. Doxiadis, H. Garitaonandia, D.A.A. Geerts, M. Gosselink, P. de Jong, M.S. Kayl, Z. van Kesteren, E. Koffeman, E. van der Kraaij, H.C. Lee, R.H.L. van der Leeuw, F. Linde, J. Mechnich, I. Mussche, L. de Nooij, J.P. Ottersbach, M. Tsiakiris, J.C. Vermeulen, M. Vreeswijk, I. van Vulpen, E. van der Poel, M. Rijpstra, N. Ruckstuhl | | Title | Search for contact interactions in dilepton events from pp collisions at sqrt s = 7 TeV with the ATLAS detector |
| Journal | Physics Letters B |
| Volume | 712 |
| Year | 2012 |
| Issue | 1-2 |
| Pages | 40-58 |
| ISSN | 03702693 |
| Faculty | Faculty of Science |
| Institute/dept. | FNWI: Institute for High Energy Physics (IHEF) |
| 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 View the MathML sources=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−11.21 fb−1 in the e+e−e+e− and μ+μ−μ+μ− channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ21/Λ2, the following 95% CL lower limits are placed on the energy scale of ℓℓqqℓℓqq contact interactions: Λ−>10.1 TeVΛ−>10.1 TeV (Λ+>9.4 TeVΛ+>9.4 TeV) in the electron channel and Λ−>8.0 TeVΛ−>8.0 TeV (Λ+>7.0 TeVΛ+>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/Λ41/Λ4. |
| Document type | Article |
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