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Search for high mass dilepton resonances in pp collisions at root s=7 TeV with the ATLAS experiment
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 700, no 3-4, 163-180 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 700, no 3-4, 163-180 p.
Keyword [en]
Grand unified theory, Narrow resonance, New gauge boson, Z ', Dilepton, Mass spectrum
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-165540DOI: 10.1016/j.physletb.2011.04.044ISI: 000292586400002OAI: oai:DiVA.org:uu-165540DiVA: diva2:474175
Note
3027 more authors from the ATLAS collaboration.Available from: 2012-01-09 Created: 2012-01-09 Last updated: 2017-12-08Bibliographically approved

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Bélanger-Champagne, CamilleBrenner, RichardBuszello, Claus P.Ekelöf, TordEllert, MattiasFerrari, Arnaud

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Bélanger-Champagne, CamilleBrenner, RichardBuszello, Claus P.Ekelöf, TordEllert, MattiasFerrari, Arnaud
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High Energy Physics
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Physics Letters B
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