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

G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, O. Abdinov, R. Aben, B. Abi, M. Abolins, O. S. AbouZeid, H. Abramowicz, H. Abreu, B. S. Acharya, L. Adamczyk, D. L. Adams, T. N. Addy, J. Adelman, S. Adomeit, P. AdragnaT. Adye, S. Aefsky, J. A. Aguilar-Saavedra, M. Agustoni, M. Aharrouche, S. P. Ahlen, F. Ahles, A. Ahmad, M. Ahsan, G. Aielli, T. P.A. Åkesson, G. Akimoto, A. V. Akimov, M. S. Alam, M. A. Alam, J. Albert, S. Albrand, M. Aleksa, I. N. Aleksandrov, F. Alessandria, C. Alexa, G. Alexander, G. Alexandre, T. Alexopoulos, M. Alhroob, M. Aliev, G. Alimonti, K. Kawagoe, S. Oda, J. Tojo, The ATLAS Collaboration

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Abstract

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.

Original languageEnglish
Pages (from-to)242-260
Number of pages19
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume719
Issue number4-5
DOIs
Publication statusPublished - Feb 26 2013

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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