Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5039
Title: Search for resonances in the dilepton mass distribution in pp collisions at ?s = 7TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: Hadron-Hadron scattering
Kaluza-Klein gravitons
Constraints
Randall-Sundrum model
Issue Date: 2011
Publisher: Springer Verlag
Source: Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., ...CMS Collaboration (2011). Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV. Journal of High Energy Physics, 2011(5). doi:10.1007/JHEP05(2011)093
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 = 7TeV. The event samples correspond to integrated luminosities of 40 pb-1in the dimuon channel and 35 pb-1in 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) ! ℓ+ℓ-relative to Z → ℓ+ℓ-are presented. These limits exclude at 95% confidence level a Z' with standard-model-like couplings below 1140 GeV, the superstring-inspired Z' ψ below 887 GeV, and, for values of the coupling parameter k√MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV. © SISSA 2011.
URI: http://doi.org/10.1007/JHEP05(2011)093
http://hdl.handle.net/11147/5039
ISSN: 1029-8479
Appears in Collections:Physics / Fizik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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