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Search for high-mass dilepton resonances in pp collisions at root s = 8 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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: 2881
2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 90, no 5, 052005- p.Article in journal (Refereed) Published
Abstract [en]

The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to dielectron or dimuon final states. Results are presented from an analysis of proton-proton (pp) collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb(-1) in the dimuon channel. A narrow resonance with Standard Model Z couplings to fermions is excluded at 95% confidence level for masses less than 2.79 TeV in the dielectron channel, 2.53 TeV in the dimuon channel, and 2.90 TeV in the two channels combined. Limits on other model interpretations are also presented, including a grand-unification model based on the E-6 gauge group, Z* bosons, minimal Z' models, a spin-2 graviton excitation from Randall-Sundrum models, quantum black holes, and a minimal walking technicolor model with a composite Higgs boson.

Place, publisher, year, edition, pages
American Physical Society , 2014. Vol. 90, no 5, 052005- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-156088DOI: 10.1103/PhysRevD.90.052005ISI: 000342142500001Scopus ID: 2-s2.0-84907914243OAI: oai:DiVA.org:kth-156088DiVA: diva2:765108
Funder
EU, European Research CouncilSwedish Research Council
Note

QC 20141121

Available from: 2014-11-21 Created: 2014-11-21 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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