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Search for high-mass resonances decaying into τ-lepton pairs in pp collisions at √s = 7 TeV

Author(s)
Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Kim, Y.; Klute, Markus; Li, W.; 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; Wolf, Roger; Xie, Si; Yang, Mingming; Bauer, Gerry P; Dutta, Valentina; Luckey Jr, P David; Roland, Christof E; Roland, Gunther M; Stoeckli, Fabian; Sumorok, Konstanty C; ... Show more Show less
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Abstract
A search for high-mass resonances decaying into τ[superscript +]τ[superscript −] is performed using a data sample of pp collisions at √s = 7 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 4.9 fb[superscript −1]. The number of observed events is in agreement with the standard model prediction. An upper limit on the product of the resonance cross section and branching fraction into τ-lepton pairs is calculated as a function of the resonance mass. Using the sequential standard model resonance Z′[subscript SSM] and the superstring-inspired E[subscript 6] model with resonance Z′[subscript ψ] as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.
Date issued
2012-08
URI
http://hdl.handle.net/1721.1/92047
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physics Letters B
Publisher
Elsevier
Citation
Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Search for High-Mass Resonances Decaying into τ-Lepton Pairs in Pp Collisions At √s = 7 TeV.” Physics Letters B 716, no. 1 (September 2012): 82–102. © 2012 CERN
Version: Final published version
ISSN
03702693

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