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

Authors

CMS Collaboration
Ekaterina Avdeeva, University of Nebraska-LincolnFollow
Kenneth A. Bloom, University of Nebraska-LincolnFollow
S. Bose, University of Nebraska-LincolnFollow
Jamila Butt, University of Nebraska-Lincoln
Daniel R. Claes, University of Nebraska-LincolnFollow
Aaron Dominguez, University of Nebraska-LincolnFollow
Michael Eads, University of Nebraska-LincolnFollow
P. Jindal, University of Nebraska-Lincoln
J. Keller, University of Nebraska-LincolnFollow
Ilya Kravchenko, University of Nebraska-LincolnFollow
J. Lazo-Flores, University of Nebraska-LincolnFollow
H. Malbouisson, University of Nebraska-Lincoln
Sudhir Malik, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow

Date of this Version

2012

Citation

Physics Letters B 716 (2012) 82–102; http://dx.doi.org/10.1016/j.physletb.2012.07.062

Abstract

A search for high-mass resonances decaying into τ⁺τ⁻ 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⁻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'_SSM and the superstring-inspired E₆ model with resonance Z'_ψ as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.