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Search for dilepton resonances in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 3025
2011 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 107, no 27Article in journal (Refereed) Published
Abstract [en]

This Letter reports on a search for narrow high-mass resonances decaying into dilepton final states. The data were recorded by the ATLAS experiment in pp collisions at root s = 7 TeV at the Large Hadron Collider and correspond to a total integrated luminosity of 1.08 (1.21) fb(-1) in the e(+)e(-) (mu(+)mu(-)) channel. No statistically significant excess above the standard model expectation is observed and upper limits are set at the 95% C. L. on the cross section times branching fraction of Z' resonances and Randall-Sundrum gravitons decaying into dileptons as a function of the resonance mass. A lower mass limit of 1.83 TeV on the sequential standard model Z' boson is set. A Randall-Sundrum graviton with coupling k/(M) over bar Pl = 0.1 is excluded at 95% C. L. for masses below 1.63 TeV.

Place, publisher, year, edition, pages
2011. Vol. 107, no 27
Keyword [en]
FERMION-PAIR PRODUCTION, PARTON DISTRIBUTIONS, GAUGE BOSONS, LHC, LEP, PHYSICS, HADRON, MODELS
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-84545DOI: 10.1103/PhysRevLett.107.272002ISI: 000298611000012Scopus ID: 2-s2.0-84855331165OAI: oai:DiVA.org:kth-84545DiVA: diva2:499484
Note
Author count 3025. QC 20120214Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2017-12-07Bibliographically approved

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Strandberg, Jonas

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