A search for high-mass resonances decaying into τ+τ− is performed using a data sample of pp collisions at sqrt(s)=7TeV. 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'_psi as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.

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

TOSI, SILVANO;
2012-01-01

Abstract

A search for high-mass resonances decaying into τ+τ− is performed using a data sample of pp collisions at sqrt(s)=7TeV. 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'_psi as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/453319
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