Centers and Institutes
Published December 14, 2011 | Version v1
Journal article Open

Measurement of the $Z→𝜏⁢𝜏$ cross section with the ATLAS detector

Creators

  • 1. Albert-Ludwigs-Universität
  • 2. University of Oklahoma
  • 3. Universitat Autònoma de Barcelona
  • 4. Université de Genève
  • 5. Oxford University
  • 6. Azerbaijan Academy of Sciences
  • 7. Oklahoma State University
  • 8. Michigan State University
  • 9. Tel Aviv University
  • 10. Université Paris-Sud
  • 11. INFN Sezione di Milano
  • 12. Università di Udine
  • 13. Brookhaven National Laboratory
  • 14. Hampton University
  • 15. Yale University
  • 16. Max-Planck-Institut für Physik
  • 17. University of Chicago

Description

The $Z→𝜏⁢𝜏$ 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 $36  pb^{−1}$, at a proton-proton center-of-mass energy of $\sqrt{s}=7  TeV$. 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 $Z→𝜏⁢𝜏$ 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.

Notes

Due to the large number of authors, only the first 20 and the University of Chicago authors are included on the above author list. Please download the article for the complete list of authors.

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PhysRevD.84.112006.pdf

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Additional details

Identifiers

DOI
10.1103/PhysRevD.84.112006
Other
oai:uchicago.tind.io:12462

Funding

Agencia Nacional de Promoción Científica y Tecnológica
Yerevan Physics Institute
Australian Research Council
Bundesministerium für Bildung, Wissenschaft und Forschung
Azerbaijan National Academy of Sciences
SSTC
National Council for Scientific and Technological Development
Fundação de Amparo à Pesquisa do Estado de São Paulo
Natural Sciences and Engineering Research Council of Canada
National Research Council Canada
Canada Foundation for Innovation
CERN
Consejo Nacional de Innovación, Ciencia y Tecnología
Chinese Academy of Sciences
Ministry of Science and Technology
National Natural Science Foundation of China
Ministerio de Ciencia, Tecnología e Innovación
Ministry of Education, Youth and Sports
Ministry of Industry and Trade
VSC CR
Danish National Research Foundation
Danish Natural Sciences Research Council
Lundbeck Foundation
ARTEMIS
Institut National de Physique Nucléaire et de Physique des Particules
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Georgian National Academy of Sciences
Bundesministerium für Forschung, Technologie und Raumfahrt
Deutsche Forschungsgemeinschaft
HGF
MPG
AvH Foundation
GSRT
ISF
MINERVA
GIF
DIP
Benoziyo Center
INFN
MEXT
JSPS
CNRST
FOM
NWO
RCN
MNiSW
Gabinete de Relações Internacionais da Ciência e do Ensino Superior
Fundação para a Ciência e Tecnologia
MERYS (MECTS)
MES of Russia
Rosatom (Russia)
Joint Institute for Nuclear Research
Ministry of Education, Science and Technological Development
MSSR
The Slovenian Research and Innovation Agency
Ministry of Science Technology and Higher Education
DST/NRF
Ministerio de Ciencia, Innovación y Universidades
Stockholm Resilience Centre
Wallenberg Foundation
SER
Swiss National Science Foundation
Cantons of Bern and Geneva
National Science and Technology Council
Turkish Atomic Energy Authority
Science and Technology Facilities Council
Royal Society
Leverhulme Trust
U.S. Department of Energy
National Science Foundation

UChicago Information

Division(s)
Physical Sciences Division
Department(s)
Enrico Fermi Institute