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Evidence for electroweak production of two jets in association with a Z gamma pair in pp collisions at root S=13 TeV with the ATLAS detector
Aix Marseille Univ, IN2P3, CNRS, CPPM, Marseille, France..
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8015-7512
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-5935-7464
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Number of Authors: 29372020 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 803, article id 135341Article in journal (Refereed) Published
Abstract [en]

Evidence for electroweak production of two jets in association with a Z gamma pair in root s = 13 TeV proton-proton collisions at the Large Hadron Collider is presented. The analysis uses data collected by the ATLAS detector in 2015 and 2016 that corresponds to an integrated luminosity of 36.1 fb(-1). Events that contain a Z boson candidate decaying leptonically into either e(+)e(-) or mu(+)mu(-), a photon, and two jets are selected. The electroweak component is measured with observed and expected significances of 4.1 standard deviations. The fiducial cross-section for electroweak production is measured to be sigma(Z gamma jj-Ew) = 7.8 +/- 2.0 fb, in good agreement with the Standard Model prediction.

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ELSEVIER , 2020. Vol. 803, article id 135341
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Astronomy, Astrophysics and Cosmology
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URN: urn:nbn:se:kth:diva-272681DOI: 10.1016/j.physletb.2020.135341ISI: 000521730300023Scopus ID: 2-s2.0-85080130733OAI: oai:DiVA.org:kth-272681DiVA, id: diva2:1429681
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QC 20200512

Available from: 2020-05-12 Created: 2020-05-12 Last updated: 2020-05-12Bibliographically approved

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Jensen, BengtOhm, ChristianRipellino, GiuliaSidebo, P. EdvinStrandberg, Jonas

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