Search for high mass dilepton resonances in pp collisions at root s=7 TeV with the ATLAS experiment

Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Eva and Brodbeck, Timothy and Catmore, James and Cheatham, Sue and Chilingarov, Alexandre and Davidson, Ruth and de Mora, Lee and Fox, Harald and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Love, Peter and Ratoff, Peter and Sloan, Terence and Smizanska, Maria and Walder, James (2011) Search for high mass dilepton resonances in pp collisions at root s=7 TeV with the ATLAS experiment. Physics Letters B, 700 (3-4). pp. 163-180. ISSN 0370-2693

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This Letter presents a search for high mass e(+)e(-) or mu(+)mu(-) resonances in pp collisions at root s = 7 TeV at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of similar to 40 pb(-1). No statistically significant excess above the Standard Model expectation is observed in the search region of dilepton invariant mass above 110 GeV. Upper limits at the 95% confidence level are set on the cross section times branching ratio of Z' resonances decaying to dielectrons and dimuons as a function of the resonance mass. A lower mass limit of 1.048 TeV on the Sequential Standard Model Z' boson is derived, as well as mass limits on Z* and E-6-motivated Z' models.

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Journal Article
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Physics Letters B
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This article is published Open Access at It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.
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17 Dec 2013 00:04
Last Modified:
04 Aug 2020 02:25