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Title

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

CollaborationWith : Alexandre, Gauthier / Ancu, Lucian Stefan / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Bucci, Francesca / Camacho Toro, Reina / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Nessi, Marzio / Picazio, Attilio / Tykhonov, Andrii / Vallecorsa, Sofia / Wu, Xin
Published in Journal of High Energy Physics. 2015, vol. 1507, p. 157-201
Collection Open Access - SCOAP3
Abstract 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.
Keywords Hadron-Hadron Scattering
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arXiv: 1502.07177
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ATLAS COLLABORATION. A search for high-mass resonances decaying to τ + τ − in pp collisions at √s = 8 TeV with the ATLAS detector. In: Journal of High Energy Physics, 2015, vol. 1507, p. 157-201. https://archive-ouverte.unige.ch/unige:74993

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Deposited on : 2015-09-02

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