Observation of electroweak W±Z boson pair production in association with two jets in pp collisions at √s=13 TeV with the ATLAS detector

The ATLAS collaboration; C. Bittrich; T. Herrmann; F. Iltzsche; M. Kobel; S. Todt

doi:10.1016/j.physletb.2019.05.012

Observation of electroweak W^±Z boson pair production in association with two jets in pp collisions at √s=13 TeV with the ATLAS detector

Research output: Contribution to specialist publication › Featured article/Feature cover › Contributed › peer-review

Contributors

The ATLAS collaboration - , University of Bucharest, iThemba Laboratory for Accelerator Based Sciences, University of Pretoria, University of South Africa, University of Zululand, Cadi Ayyad University, New York University Abu Dhabi, University of Granada, CERN, University of California at Berkeley, University of Georgia (Tbilisi), Yeditepe University, Mohammed VI Polytechnic University (Author)
C. Bittrich - , Institute of Nuclear and Particle Physics, Chair of Particle Physics, TUD Dresden University of Technology (Author)
T. Herrmann - , Institute of Nuclear and Particle Physics, Chair of Particle Physics, TUD Dresden University of Technology (Author)
F. Iltzsche - , Institute of Nuclear and Particle Physics, Chair of Particle Physics, TUD Dresden University of Technology (Author)
M. Kobel - , Institute of Nuclear and Particle Physics, Chair of Particle Physics, TUD Dresden University of Technology (Author)
S. Todt - , Institute of Nuclear and Particle Physics, Chair of Particle Physics, TUD Dresden University of Technology (Author)

Chair of Experimental Particle Physics
Emmy Noether Junior Research Group Monte Carlo event generators
Mohamed I University
Aix-Marseille Université
University of Oklahoma
Azerbaijan National Academy of Sciences (ANAS)
Université Paris-Saclay
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
The University of Tokyo
Johannes Gutenberg University Mainz
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
Rutherford Appleton Laboratory
University of California at Santa Cruz
University College London
University of Science and Technology of China (USTC)
Polish Academy of Sciences
University of Amsterdam
University of Freiburg

Abstract

An observation of electroweak W^±Z production in association with two jets in proton–proton collisions is presented. The data collected by the ATLAS detector at the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of s=13 TeV are used, corresponding to an integrated luminosity of 36.1fb⁻¹. Events containing three identified leptons, either electrons or muons, and two jets are selected. The electroweak production of W^±Z bosons in association with two jets is measured with an observed significance of 5.3 standard deviations. A fiducial cross-section for electroweak production including interference effects and for a single leptonic decay mode is measured to be σ_WZjj−EW=0.57_−0.13 ^+0.14(stat.)_−0.06 ^+0.07(syst.)fb. Total and differential fiducial cross-sections of the sum of W^±Zjj electroweak and strong productions for several kinematic observables are also measured.

Details

Original language	English
Pages	469-492
Number of pages	24
Volume	793
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication status	Published - 10 Jun 2019
Peer-reviewed	Yes

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