Evidence for electroweak production of two jets in association with a $Zγ$ pair 
in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS Collaboration,

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Evidence for electroweak production of two jets in association with a $Zγ$ pair in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

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ATLAS Collaboration,
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

ATLAS Collaboration (2020). Evidence for electroweak production of two jets in association with a $Zγ$ pair in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector. Physics Letters B, 803, 135341. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2019-214.

Cite as: https://hdl.handle.net/21.11116/0000-0008-1B39-B

Abstract

Evidence for electroweak production of two jets in association with a $Z\gamma$ pair in $\sqrt{s} = 13$ 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 $36.1~\mathrm{fb}^{-1}$. 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 $\sigma_{Z\gamma jj\mathrm{-EW}} = 7.8 \pm 2.0$ fb, in good agreement with the Standard Model prediction.