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

Allison, Lee and Barton, Adam and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Skinner, Malcolm and Smizanska, Maria and Walder, James and Wharton, Andy (2015) A search for high-mass resonances decaying to τ+ τ− in pp collisions at √s =8 TeV with the ATLAS detector. Journal of High Energy Physics, 2015 (7). ISSN 1029-8479

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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.

Item Type:
Journal Article
Journal or Publication Title:
Journal of High Energy Physics
Additional Information:
Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Evidence of Acceptance on Publisher PDF
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
75607
Deposited By:
Deposited On:
14 Sep 2015 08:58
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Jul 2020 04:36