Title
Search for resonances in the dilepton mass distribution in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeV Search for resonances in the dilepton mass distribution in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of high energy physics. - Bristol
Volume/pages
(2011) :5 , p. 1-35
ISSN
1126-6708
1029-8479
Article Reference
093
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at s=7 TeV. The event samples correspond to integrated luminosities of 40 pb−1 in the dimuon channel and 35 pb−1 in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z′) or as Kaluza-Klein graviton excitations (GKK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z′(GKK) → &#8467; + &#8467; − relative to Z → &#8467; + &#8467; − are presented. These limits exclude at 95% confidence level a Z′ with standard-model-like couplings below 1140GeV, the superstring-inspired Z ψ ′ below 887 GeV, and, for values of the coupling parameter kMPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.
E-info
https://repository.uantwerpen.be/docman/iruaauth/00691d/d148d7e3a84.pdf
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/1a6475/90975.pdf
Handle