Search for Heavy Narrow Dilepton Resonances in Pp Collisions at √s = 7 TeV and √s = 8 TeV
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; Krajczar, Krisztian F.; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Rudolph, Matthew Scott; Stephans, George S. F.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wyslouch, Boleslaw; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Bauer, Gerry P; Dutta, Valentina; Levin, Andrew Michael; Roland, Christof E; Stoeckli, Fabian; Luckey Jr, P David; Roland, Gunther M; Sumorok, Konstanty C; Wolf, Roger; Yang, Mingming; Wyslouch, Victoria; ... Show more Show less
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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.
Date issued
2013-02Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of ScienceJournal
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
ISSN
03702693