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| CMS-PAS-GEN-17-002 | ||
| A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data | ||
| CMS Collaboration | ||
| September 2021 | ||
| Abstract: New sets of parameter tunes for two of the colour reconnection models implemented in the PYTHIA8 event generator, QCD-inspired and gluon move, are obtained based on the default CMS PYTHIA8 underlying-event tune, CP5. Measurements sensitive to underlying-event performed at $\sqrt{s}=$ 1.96, 7, and 13 TeV are used to constrain the parameters of the colour reconnection models and the multiple parton interactions simultaneously. The new colour reconnection tunes are compared to various measurements at a centre-of-mass energy of 1.96, 7, 8, and 13 TeV including measurements of underlying event, strange particle multiplicities, jet substructure observables, hadron ratios, jet shapes and colour flow in top quark pair events, and top quark mass. The new colour reconnection tunes can be used to estimate systematic uncertainties related to colour reconnection modelling. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to EPJC. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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