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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.
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, 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:kth:diva-71610DOI: 10.1016/j.physletb.2011.04.044ISI: 000292586400002Scopus ID: 2-s2.0-79960194361OAI: oai:DiVA.org:kth-71610DiVA: diva2:487853
Note
QC 20120201Available from: 2012-02-01 Created: 2012-01-31 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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