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Search for high mass dilepton resonances in pp collisions at root s=7 TeV with the ATLAS experiment
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
University of Chicago.ORCID iD: 0000-0002-8913-0981
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2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 700, no 3-4, p. 163-180Article 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, p. 163-180
Keywords [en]
Grand unified theory, Narrow resonance, New gauge boson, Z ', Dilepton, Mass spectrum
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-71610DOI: 10.1016/j.physletb.2011.04.044ISI: 000292586400002Scopus ID: 2-s2.0-79960194361OAI: oai:DiVA.org:kth-71610DiVA, id: diva2:487853
Note
QC 20120201Available from: 2012-02-01 Created: 2012-01-31 Last updated: 2019-12-04Bibliographically approved

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Strandberg, Jonas

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Grahn, Karl-JohanLund-Jensen, BengtStrandberg, JonasLafaye, Remi
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