Elsevier

Physics Letters B

Volume 793, 10 June 2019, Pages 469-492
Physics Letters B

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

https://doi.org/10.1016/j.physletb.2019.05.012Get rights and content
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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 36.1fb1. 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 σWZjjEW=0.570.13+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.

Cited by (0)

a

Also at Borough of Manhattan Community College, City University of New York, New York NY; United States of America.

b

Also at Centre for High Performance Computing, CSIR Campus, Rosebank, Cape Town; South Africa.

c

Also at CERN, Geneva; Switzerland.

d

Also at CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille; France.

e

Also at Département de Physique Nucléaire et Corpusculaire, Université de Genève, Genève; Switzerland.

f

Also at Departament de Fisica de la Universitat Autonoma de Barcelona, Barcelona; Spain.

g

Also at Department of Applied Physics and Astronomy, University of Sharjah, Sharjah; United Arab Emirates.

h

Also at Department of Financial and Management Engineering, University of the Aegean, Chios; Greece.

i

Also at Department of Physics and Astronomy, University of Louisville, Louisville, KY; United States of America.

j

Also at Department of Physics and Astronomy, University of Sheffield, Sheffield; United Kingdom.

k

Also at Department of Physics, California State University, East Bay; United States of America.

l

Also at Department of Physics, California State University, Fresno; United States of America.

m

Also at Department of Physics, California State University, Sacramento; United States of America.

n

Also at Department of Physics, King's College London, London; United Kingdom.

o

Also at Department of Physics, St. Petersburg State Polytechnical University, St. Petersburg; Russia.

p

Also at Department of Physics, University of Fribourg, Fribourg; Switzerland.

q

Also at Department of Physics, University of Michigan, Ann Arbor MI; United States of America.

r

Also at Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow; Russia.

s

Also at Giresun University, Faculty of Engineering, Giresun; Turkey.

t

Also at Graduate School of Science, Osaka University, Osaka; Japan.

u

Also at Hellenic Open University, Patras; Greece.

v

Also at Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest; Romania.

w

Also at II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen; Germany.

x

Also at Institucio Catalana de Recerca i Estudis Avancats, ICREA, Barcelona; Spain.

y

Also at Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen; Netherlands.

z

Also at Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Budapest; Hungary.

aa

Also at Institute of Particle Physics (IPP); Canada.

ab

Also at Institute of Physics, Academia Sinica, Taipei; Taiwan.

ac

Also at Institute of Physics, Azerbaijan Academy of Sciences, Baku; Azerbaijan.

ad

Also at Institute of Theoretical Physics, Ilia State University, Tbilisi; Georgia.

ae

Also at LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay; France.

af

Also at Louisiana Tech University, Ruston LA; United States of America.

ag

Also at LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris; France.

ah

Also at Manhattan College, New York NY; United States of America.

ai

Also at Moscow Institute of Physics and Technology State University, Dolgoprudny; Russia.

aj

Also at National Research Nuclear University MEPhI, Moscow; Russia.

ak

Also at Physics Department, An-Najah National University, Nablus; Palestine.

al

Also at Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg; Germany.

am

Also at School of Physics, Sun Yat-sen University, Guangzhou; China.

an

Also at The City College of New York, New York NY; United States of America.

ao

Also at The Collaborative Innovation Center of Quantum Matter (CICQM), Beijing; China.

ap

Also at Tomsk State University, Tomsk, and Moscow Institute of Physics and Technology State University, Dolgoprudny; Russia.

aq

Also at TRIUMF, Vancouver BC; Canada.

ar

Also at Universidad de Granada, Granada (Spain); Spain.

as

Also at Universita di Napoli Parthenope, Napoli; Italy.

Deceased.

E-mail address: [email protected].