Search for Heavy Narrow Dilepton Resonances in Pp Collisions at √s = 7 TeV and √s = 8 TeV
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Chatrchyan-2013-Search for heavy nar.pdf
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Author(s)
Apyan, Aram
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Kim, Y.
Klute, Markus
Date Issued
February 2013
Journal
Physics Letters B
Publisher
Elsevier
Citation
Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, et al. “Search for Heavy Narrow Dilepton Resonances in Pp Collisions at √s = 7 TeV and √s = 8 TeV.” Physics Letters B 720, no. 1–3 (March 2013): 63–82. © 2013 CERN
Version
Final published version
Abstract
An updated search for heavy narrow resonances decaying to muon or electron pairs using the CMS detector is presented. Data samples from pp collisions at √s = 7 TeV and 8 TeV at the LHC, with integrated luminosities of up to 5.3 and 4.1 fb[superscript −1], respectively, are combined. No evidence for a heavy narrow resonance is observed. The analysis of the combined data sets excludes, at 95% confidence level, a Sequential Standard Model Z[' over SSM] resonance lighter than 2590 GeV, a superstring-inspired Z[' over ψ] lighter than 2260 GeV, and Kaluza–Klein gravitons lighter than 2390 (2030) GeV, assuming that the coupling parameter k/[bar over M][subscript Pl] is 0.10 (0.05). These are the most stringent limits to date.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2013.02.003
