Search for high-mass resonances decaying into τ-lepton pairs in pp collisions at √s = 7 TeV
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Chatrchyan-2012-Search for high-mass.pdf
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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
Date Issued
August 2012
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
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.
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.2012.07.062
