2026-10-19T04:52:07Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/requestoai:ebyu-rdlopen.rawdatalibrary.net:ebyu/124342026-10-18T21:13:19Zopenairedrivercom_ebyu_10000col_ebyu_10001CMS pythia 8 colour reconnection tunes based on underlying-event dataTumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Damanakis, K.Dragicevic, M.Valle, A. Escalante DelFrühwirth, R.Jeitler, M.Krammer, N.Lechner, L.Liko, D.Mikulec, I.Paulitsch, P.Pitters, F.M.Schieck, J.Schöfbeck, R.Schwarz, D.Templ, S.Waltenberger, W.Wulz, C.-E.Darwish, M.R.De Wolf, E.A.Janssen, T.Kello, T.Lelek, A.Sfar, H. RejebMechelen, P. VanPutte, S. VanRemortel, N. VanBols, E.S.D’Hondt, J.Delcourt, M.Faham, H. ElLowette, S.Moortgat, S.Morton, A.Müller, D.Sahasransu, A.R.Tavernier, S.Doninck, W. VanVannerom, D.Beghin, D.Bilin, B.Clerbaux, B.De Lentdecker, G.Favart, L.Kalsi, A.K.Lee, K.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 . © 2023, The Author(s).Springer Nature2023Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/12434https://doi.org/10.1140/epjc/s10052-023-11630-81434-6044enEuropean Physical Journal Cinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/12434