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CMS pythia 8 colour reconnection tunes based on underlying-event data

Academic Article
Publication Date:
2023
abstract:
New sets of parameter tunes for two of the colour reconnection models, quantum chromodynamics-inspired and gluon-move, implemented in the pythia 8 event generator, are obtained based on the default CMS pythia 8 underlying-event tune, CP5. Measurements sensitive to the underlying event performed by the CMS experiment at centre-of-mass energies s=7 and 13 TeV , and by the CDF experiment at 1.96 TeV are used to constrain the parameters of colour reconnection models and multiple-parton interactions simultaneously. The new colour reconnection tunes are compared with various measurements at 1.96, 7, 8, and 13 TeV including measurements of the underlying-event, strange-particle multiplicities, jet substructure observables, jet shapes, and colour flow in top quark pair (t t ¯) events. The new tunes are also used to estimate the uncertainty related to colour reconnection modelling in the top quark mass measurement using the decay products of t t ¯ events in the semileptonic channel at 13 TeV .
Iris type:
01.01 Articolo in rivista
Keywords:
top quark mass
List of contributors:
Moscatelli, Francesco
Authors of the University:
MOSCATELLI FRANCESCO
Handle:
https://iris.cnr.it/handle/20.500.14243/464297
Published in:
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
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http://www.scopus.com/record/display.url?eid=2-s2.0-85166304036&origin=inward
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