ATLAS OmniFold 24-Dimensional Z+jets Open Data

<div>These datasets contain the unbinned, twenty-four-dimensional ATLAS&nbsp;Z+jets differential cross-section measurement presented in&nbsp;<a href="https://cds.cern.ch/record/2899105" target="_blank" rel="noopener">CERN-EP-2024-132</a>. The measurements are presented as Pandas DataFrames in HDF5 format, and they are accompanied by MC predictions formatted as Numpy arrays. Measurements are provided both for "pseudo-data", i.e. a validation MC sample with truth- and reco-level quantities that has been reweighted to match data, as well as real data.&nbsp;</div> <div>&nbsp;</div> <div><strong>Important:&nbsp;</strong>Before using this data, please consult the&nbsp;<a href="https://gitlab.cern.ch/atlas-physics/public/sm-z-jets-omnifold-2024" target="_blank" rel="noopener">documentation &amp; example notebooks</a>.&nbsp;</div> <div>&nbsp;</div> <div>The signal process is inclusive Z&rarr;&mu;&mu; production with a fiducial region defined in the boosted regime: p_T^&mu;&mu; &gt; 200 GeV.&nbsp;</div> <div>&nbsp;</div> <div>In&nbsp;total, 24 Z+jets kinematic observables are measured:</div> <ul> <li>p_T, &eta;, and ϕ of each of the two muons (6 observables)</li> <li>The p_T and rapidity of the dimuon system: p_T^&mu;&mu;, y^&mu;&mu; (2 observables)</li> <li>The 4-momenta (p_T, y, ϕ, m) of the two leading charged particle jets (8 observables)</li> <li>The number of (charged) constituents and n-subjettiness quantities &tau;_1, &tau;_2, and &tau;_3 for each of the same two jets (8 observables)</li> </ul> <div>The dimuon system p_T and y can be obtained from the muon kinematics, but they are included for convenience. The observables are labeled by 1 and 2 for leading and subleading in p_T, respectively.&nbsp;</div>