A search for high-mass resonances decaying to $au^_s16au^-$ in $pp$ collisions at $sqrts=7$ TeV with the ATLAS detector

Abstract

This Letter presents a search for high-mass resonances decaying into tau_s16tau- final states using proton-proton collisions at sqrt(s) = 7 TeV produced by the Large Hadron Collider. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.6 inverse femtobarns. No statistically significant excess above the Standard Model expectation is observed_s19 95% credibility upper limits are set on the cross section times branching fraction of Z_s14 resonances decaying into tau_s16tau- pairs as a function of the resonance mass. As a result, Z_s14 bosons of the Sequential Standard Model with masses less than 1.40 TeV are excluded at 95% credibility.