Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements

Albert M Sirunyan; Armen Tumasyan; Wolfgang Adam; Federico Ambrogi; Ece Asilar; Thomas Bergauer; Johannes Brandstetter; Marko Dragicevic; Janos Erö; Alberto Escalante del Valle; Martin Flechl; Rudolf Fruehwirth; Vasile Mihai Ghete; Josef Hrubec; Manfred Jeitler; Natascha Krammer; Ilse Krätschmer; Dietrich Liko; Thomas Madlener; Ivan Mikulec; Navid Rad; Herbert Rohringer; Jochen Schieck; Robert Schöfbeck; Markus Spanring; Daniel Spitzbart; Wolfgang Waltenberger; Johannes Wittmann; Claudia-Elisabeth Wulz; Mateusz Zarucki; Vladimir Chekhovsky; Vladimir Mossolov; Juan Suarez Gonzalez; Eddi A de Wolf; Davide Di Croce; Xavier Janssen; Jasper Lauwers; Maxim Pieters; Hans van Haevermaet; Pierre van Mechelen; Nick van Remortel; Shimaa Abu Zeid; Freya Blekman; Jorgen d'Hondt; Jarne de Clercq; Kevin Deroover; Giannis Flouris; Denys Lontkovskyi; Steven Lowette; Ivan Marchesini; Seth Moortgat; Lieselotte Moreels; Quentin Python; Kirill Skovpen; Stefaan Tavernier; Walter van Doninck; Petra van Mulders; Isis van Parijs; Diego Beghin; Bugra Bilin; Hugues Brun; Barbara Clerbaux; Gilles de Lentdecker; Hugo Delannoy; Brian Dorney; Giuseppe Fasanella; Laurent Favart; Reza Goldouzian; Anastasia Grebenyuk; Amandeep Kaur Kalsi; Thomas Lenzi; Jelena Luetic; Nicolas Postiau; Elizabeth Starling; Laurent Thomas; Catherine Vander Velde; Pascal Vanlaer; David Vannerom; Qun Wang; Tom Cornelis; Didar Dobur; Alexis Fagot; Muhammad Gul; Illia Khvastunov; Deniz Poyraz; Christos Roskas; Daniele Trocino; Michael Tytgat; Willem Verbeke; Basile Vermassen; Martina Vit; Nicolas Zaganidis; Hamed Bakhshiansohi; Olivier Bondu; Sébastien Brochet; Giacomo Bruno; Claudio Caputo; Pieter David; Christophe Delaere; Martin Delcourt; CMS Collaboration; John Chou

doi:10.1140/epjc/s10052-019-7499-4

Journal article

Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements

Albert M Sirunyan, Armen Tumasyan, Wolfgang Adam, Federico Ambrogi, Ece Asilar, Thomas Bergauer, Johannes Brandstetter, Marko Dragicevic, Janos Erö, Alberto Escalante del Valle, …

Eur.Phys.J.C, Vol.80(1), pp.4-4

2020

DOI: https://doi.org/10.1140/epjc/s10052-019-7499-4

PMCID: PMC6944267

PMID: 31976986

Abstract

High Energy Physics - Experiment

Physics

New sets of CMS underlying-event parameters (“tunes”) are presented for the pythia8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell–Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from pythia8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.

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Title: Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
Creators: Albert M Sirunyan - Alikhanyan National Laboratory
Armen Tumasyan - Alikhanyan National Laboratory
Wolfgang Adam
Federico Ambrogi
Ece Asilar
Thomas Bergauer
Johannes Brandstetter
Marko Dragicevic
Janos Erö
Alberto Escalante del Valle
Martin Flechl
Rudolf Fruehwirth
Vasile Mihai Ghete
Josef Hrubec
Manfred Jeitler
Natascha Krammer
Ilse Krätschmer
Dietrich Liko
Thomas Madlener
Ivan Mikulec
Navid Rad
Herbert Rohringer
Jochen Schieck
Robert Schöfbeck
Markus Spanring
Daniel Spitzbart
Wolfgang Waltenberger
Johannes Wittmann
Claudia-Elisabeth Wulz
Mateusz Zarucki
Vladimir Chekhovsky
Vladimir Mossolov
Juan Suarez Gonzalez
Eddi A de Wolf - University of Antwerp
Davide Di Croce - University of Antwerp
Xavier Janssen - University of Antwerp
Jasper Lauwers - University of Antwerp
Maxim Pieters - University of Antwerp
Hans van Haevermaet - University of Antwerp
Pierre van Mechelen - University of Antwerp
Nick van Remortel - University of Antwerp
Shimaa Abu Zeid - Vrije Universiteit Brussel
Freya Blekman - Vrije Universiteit Brussel
Jorgen d'Hondt - Vrije Universiteit Brussel
Jarne de Clercq - Vrije Universiteit Brussel
Kevin Deroover - Vrije Universiteit Brussel
Giannis Flouris - Vrije Universiteit Brussel
Denys Lontkovskyi - Vrije Universiteit Brussel
Steven Lowette - Vrije Universiteit Brussel
Ivan Marchesini - Vrije Universiteit Brussel
Seth Moortgat - Vrije Universiteit Brussel
Lieselotte Moreels - Vrije Universiteit Brussel
Quentin Python - Vrije Universiteit Brussel
Kirill Skovpen - Vrije Universiteit Brussel
Stefaan Tavernier - Vrije Universiteit Brussel
Walter van Doninck - Vrije Universiteit Brussel
Petra van Mulders - Vrije Universiteit Brussel
Isis van Parijs - Vrije Universiteit Brussel
Diego Beghin - Université Libre de Bruxelles
Bugra Bilin - Université Libre de Bruxelles
Hugues Brun - Université Libre de Bruxelles
Barbara Clerbaux - Université Libre de Bruxelles
Gilles de Lentdecker - Université Libre de Bruxelles
Hugo Delannoy - Université Libre de Bruxelles
Brian Dorney - Université Libre de Bruxelles
Giuseppe Fasanella - Université Libre de Bruxelles
Laurent Favart - Université Libre de Bruxelles
Reza Goldouzian - Université Libre de Bruxelles
Anastasia Grebenyuk - Université Libre de Bruxelles
Amandeep Kaur Kalsi - Université Libre de Bruxelles
Thomas Lenzi - Université Libre de Bruxelles
Jelena Luetic - Université Libre de Bruxelles
Nicolas Postiau - Université Libre de Bruxelles
Elizabeth Starling - Université Libre de Bruxelles
Laurent Thomas - Université Libre de Bruxelles
Catherine Vander Velde
Pascal Vanlaer - Université Libre de Bruxelles
David Vannerom - Université Libre de Bruxelles
Qun Wang
Tom Cornelis - Ghent University
Didar Dobur - Ghent University
Alexis Fagot - Ghent University
Muhammad Gul - Ghent University
Illia Khvastunov - Ghent University
Deniz Poyraz - Ghent University
Christos Roskas - Ghent University
Daniele Trocino - Ghent University
Michael Tytgat - Ghent University
Willem Verbeke - Ghent University
Basile Vermassen - Ghent University
Martina Vit - Ghent University
Nicolas Zaganidis - Ghent University
Hamed Bakhshiansohi - UCLouvain
Olivier Bondu - UCLouvain
Sébastien Brochet - UCLouvain
Giacomo Bruno - UCLouvain
Claudio Caputo - UCLouvain
Pieter David - UCLouvain
Christophe Delaere - UCLouvain
Martin Delcourt - UCLouvain
CMS Collaboration
John Chou - Physics and Astronomy (SAS)
Publication Details: Eur.Phys.J.C, Vol.80(1), pp.4-4
Date published: 2020
Academic Unit: Physics and Astronomy (SAS)
Language: English
Resource Type: Journal article
Identifiers: 991031758150004646