Search for high mass dilepton resonances in pp collisions at root s=7 TeV with the ATLAS experiment
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 700, no 3-4, 163-180 p.Article in journal (Refereed) Published
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.
Grand unified theory, Narrow resonance, New gauge boson, Z ', Dilepton, Mass spectrum
IdentifiersURN: urn:nbn:se:uu:diva-165540DOI: 10.1016/j.physletb.2011.04.044ISI: 000292586400002OAI: oai:DiVA.org:uu-165540DiVA: diva2:474175
3027 more authors from the ATLAS collaboration.2012-01-092012-01-092012-01-09Bibliographically approved