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

V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for high mass resonances decaying into τ-lepton pairs in pp collisions at s√ = 7 TeV. PHYSICS LETTERS. SECTION B, 716, 82-102 [10.1016/j.physletb.2012.07.062].

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

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;
2012

Abstract

A search for high-mass resonances decaying into τ+τ− is performed using a data sample of pp collisions at sqrt(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'Psi as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.
2012
V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for high mass resonances decaying into τ-lepton pairs in pp collisions at s√ = 7 TeV. PHYSICS LETTERS. SECTION B, 716, 82-102 [10.1016/j.physletb.2012.07.062].
V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER¨O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GHETE; J. HAMMER; S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/127529
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