Event generator tunes obtained from underlying event and multiparton scattering measurements
Name
Event generator.pdf
Size
7.69 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Demiragli, Zeynep
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Date Issued
March 2016
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
CMS Collaboration et al. “Event Generator Tunes Obtained from Underlying Event and Multiparton Scattering Measurements.” The European Physical Journal C 76.3 (2016): n. pag. © 2016 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
New sets of parameters (“tunes”) for the underlying-event (UE) modelling of the pythia8, pythia6 and herwig++ Monte Carlo event generators are constructed using different parton distribution functions. Combined fits to CMS UE proton–proton (pp) data at s√=7TeV and to UE proton–antiproton (p[bar over p]) data from the CDF experiment at lower s√s, are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton–proton collisions at 13 TeV. In addition, it is investigated whether the values of the parameters obtained from fits to UE observables are consistent with the values determined from fitting observables sensitive to double-parton scattering processes. Finally, comparisons are presented of the UE tunes to “minimum bias” (MB) events, multijet, and Drell–Yan ( q[bar over q]→Z/γ∗→ lepton-antilepton+jets) observables at 7 and 8 TeV, as well as predictions for MB and UE observables at 13 TeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-016-3988-x
