Measurements of $Z\gamma+$jets differential cross sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector - INSPIRE

Measurements of $Z\gamma+$ jets differential cross sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS

Collaboration

Dec 14, 2022

54 pages

Published in:

JHEP 07 (2023) 072

Published: Jul 10, 2023

e-Print:

2212.07184 [hep-ex]

DOI:

10.1007/JHEP07(2023)072

Report number:

CERN-EP-2022-240

Experiments:

CERN-LHC-ATLAS

View in:

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Abstract: (Springer)

Differential cross-section measurements of Zγ production in association with hadronic jets are presented, using the full 139 fb

^{−1}

dataset of

\sqrt{s}

= 13 TeV proton–proton collisions collected by the ATLAS detector during Run 2 of the LHC. Distributions are measured using events in which the Z boson decays leptonically and the photon is usually radiated from an initial-state quark. Measurements are made in both one and two observables, including those sensitive to the hard scattering in the event and others which probe additional soft and collinear radiation. Different Standard Model predictions, from both parton-shower Monte Carlo simulation and fixed-order QCD calculations, are compared with the measurements. In general, good agreement is observed between data and predictions from MATRIX and MiNNLO

_{PS}

, as well as next-to-leading-order predictions from MadGraph5_aMC@NLO and Sherpa.[graphic not available: see fulltext]

Note:

54 pages in total, author list starting page 37, 12 figures, 5 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2020-14/

Hadron-Hadron Scattering
p p: scattering
p p: colliding beams
Z0: associated production
photon: associated production
jet: associated production
higher-order: 1
perturbation theory: higher-order
jet: hadronic
Z0: leptonic decay

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