Measurement of the Z→ττ cross section with the ATLAS detector

Abstract

The Z→ττ cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the τ leptons: muon-hadron, electron-hadron, electron-muon, and muon-muon. The analysis is based on a data sample corresponding to an integrated luminosity of 36pb-1, at a proton-proton center-of-mass energy of √s=7TeV. Cross sections are measured separately for each final state in fiducial regions of high detector acceptance, as well as in the full phase space, over the mass region 66-116 GeV. The individual cross sections are combined and the product of the total Z production cross section and Z→ττ branching fraction is measured to be 0.97±0.07(stat)±0.06(syst)±0.03(lumi)nb, in agreement with next-to-next-to-leading order calculations. © 2011 CERN.

Metadata

Item Type:	Article
Authors/Creators:	Aad, G Abbott, B Abdallah, J Abdelalim, AA Abdesselam, A Abdinov, O Abi, B Abolins, M Abramowicz, H Abreu, H Acerbi, E Acharya, BS Adams, DL Addy, TN Adelman, J Aderholz, M Adomeit, S Adragna, P Adye, T Aefsky, S Aguilar-Saavedra, JA Aharrouche, M Ahlen, SP Ahles, F Ahmad, A Ahsan, M Aielli, G Akdogan, T Akesson, TPA Akimoto, G Akimov, AV Akiyama, A Alam, MS Alam, MA Albert, J Albrand, S Aleksa, M Aleksandrov, IN Alessandria, F Alexa, C Alexander, G Alexandre, G Alexopoulos, T Alhroob, M Aliev, M Alimonti, G Alison, J Aliyev, M Allport, PP Allwood-Spiers, SE Almond, J Aloisio, A Alon, R Alonso, A Alviggi, MG Amako, K Amaral, P Amelung, C Ammosov, VV Amorim, A Amorós, G Amram, N Anastopoulos, C Andari, N Andeen, T Anders, CF Anderson, KJ Andreazza, A Andrei, V Andrieux, ML Anduaga, XS Angerami, A Anghinolfi, F Anjos, N Annovi, A Antonaki, A Antonelli, M Antonov, A Antos, J Anulli, F Aoun, S Aperio Bella, L Apolle, R Arabidze, G Aracena, I Arai, Y Arce, ATH Archambault, JP Arfaoui, S Arguin, JF
Copyright, Publisher and Additional Information:	© 2016 Elsevier. This is an author produced version of a paper subsequently published in Physical Review D. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Dates:	Published: 14 December 2011
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	02 Dec 2016 12:31
Last Modified:	02 Dec 2016 12:31
Published Version:	https://doi.org/10.1103/PhysRevD.84.112006
Status:	Published
Publisher:	American Physical Society
Refereed:	Yes
Identification Number:	10.1103/PhysRevD.84.112006
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:107670

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Measurement of the Z→ττ cross section with the ATLAS detector

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