A search for high-mass resonances decaying to τ + τ − in pp collisions at √s=7 TeV with the ATLAS detector

This Letter presents a search for high-mass resonances decaying into τ + τ − final states using proton-proton collisions at 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 fb −1 . No statistically signifi...

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Autor principal: Aad, G.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v719_n4-5_p242_Aad
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Sumario:This Letter presents a search for high-mass resonances decaying into τ + τ − final states using proton-proton collisions at 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 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 1.40 TeV are excluded at 95% credibility. © 2012 CERN