Cross-section measurements for the production of a $Z$ boson in association with high-transverse-momentum jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS Collaboration

Preprint

PUBDB-2022-07164

Cross-section measurements for the production of a $Z$ boson in association with high-transverse-momentum jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS Collaboration (Collaboration author)DESY*

2022

[10.3204/PUBDB-2022-07164]

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Please use a persistent id in citations: doi:10.3204/PUBDB-2022-07164

Report No.: CERN-EP-2022-075; arXiv:2205.02597

Abstract: Cross-section measurements for a $Z$ boson produced in association with high-transverse-momentum jets ($p_{\mathrm{T}} \geq 100$ GeV) and decaying into a charged-lepton pair ($e^+e^-,\mu^+\mu^-$) are presented. The measurements are performed using proton-proton collisions at $\sqrt{s}=13$ TeV corresponding to an integrated luminosity of $139$ fb$^{-1}$ collected by the ATLAS experiment at the LHC. Measurements of angular correlations between the $Z$ boson and the closest jet are performed in events with at least one jet with $p_{\mathrm{T}} \geq 500$ GeV. Event topologies of particular interest are the collinear emission of a $Z$ boson in dijet events and a boosted $Z$ boson recoiling against a jet. Fiducial cross sections are compared with state-of-the-art theoretical predictions. The data are found to agree with next-to-next-to-leading-order predictions by NNLOjet and with the next-to-leading-order multi-leg generators MadGraph5_aMC@NLO and Sherpa.

Keyword(s): p p: scattering ; p p: colliding beams ; Z0: associated production ; Z0: leptonic decay ; electron: pair production ; muon: pair production ; jet: associated production ; jet: transverse momentum: high ; higher-order: 1 ; higher-order: 2 ; perturbation theory: higher-order ; quantum chromodynamics: perturbation theory ; ATLAS ; angular correlation ; dijet ; collinear ; CERN LHC Coll ; topology ; channel cross section: measured ; experimental results ; 13000 GeV-cms

Note: 29 pages in total, 11 figures, 4 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-49/

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