Document details

A search for high-mass resonances decaying to τ+τ− in pp collisions at s√=8 TeV with the ATLAS detector

Author(s): Onofre, A. ; Castro, Nuno Filipe Silva Fernandes ; ATLAS Collaboration

Date: 2015

Persistent ID:

Origin: RepositóriUM - Universidade do Minho

Project/scholarship: info:eu-repo/grantAgreement/FCT/3599-PPCDT/143069/PT ;

Subject(s): Exotics; Experimental results; Hadron-Hadron Scattering; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Ciências Naturais::Ciências Físicas; Science & Technology; Science & Technology; Science & Technology


A search for high-mass resonances decaying into τ+τ− final states using proton-proton collisions at s√=8 TeV produced by the Large Hadron Collider is presented. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 19.5-20.3 fb−1. No statistically significant excess above the Standard Model expectation is observed; 95% credibility upper limits are set on the cross section times branching fraction of Z′ resonances decaying into τ+τ− pairs as a function of the resonance mass. As a result, Z′ bosons of the Sequential Standard Model with masses less than 2.02 TeV are excluded at 95% credibility. The impact of the fermionic couplings on the Z′ acceptance is investigated and limits are also placed on a Z′ model that exhibits enhanced couplings to third-generation fermions.

Document Type Journal article
Language English
Contributor(s) Onofre, A.; Castro, Nuno Filipe Silva Fernandes; ATLAS Collaboration
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