Parton showers and matching uncertainties in top quark pair production with Herwig 7

Cormier, Kyle; Plätzer, Simon; Reuschle, Christian; Richardson, Peter; Webster, Stephen

doi:10.1140/epjc/s10052-019-7370-7

Title: Parton showers and matching uncertainties in top quark pair production with Herwig 7

Journal Article · Tue Nov 12 00:00:00 EST 2019 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-019-7370-7· OSTI ID:1619367

Cormier, Kyle; Plätzer, Simon;

; Richardson, Peter; Webster, Stephen

Abstract We evaluate the theoretical uncertainties in next-to-leading order plus parton shower predictions for top quark pair production and decay in hadronic collisions. Our work is carried out using the Herwig 7 event generator and presents an in-depth study of variations in matching schemes with two systematically different shower algorithms, the traditional angular-ordered and alternative dipole shower. We also present all of the required extensions of the Herwig dipole shower algorithm to properly take into account quark mass effects, as well as its ability to perform top quark decays. The predictions are compared at parton level as well as to Large Hadron Collider data, including in the boosted regime. We find that the regions where predictions with a non-top-quark-specific tune differ drastically from data are plagued by large uncertainties which are consistent between our two shower and matching algorithms.

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Research Organization:: Florida State Univ., Tallahassee, FL (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-13ER41942; SC0010102; PIEF- GA-2013-628739

OSTI ID:: 1619367

Alternate ID(s):: OSTI ID: 1802041

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 79 Journal Issue: 11; ISSN 1434-6044

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 11 works

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References (45)

Vector boson pair production at the LHC Campbell, John M.; Ellis, R. Keith; Williams, Ciaran Journal of High Energy Physics, Vol. 2011, Issue 7 https://doi.org/10.1007/JHEP07(2011)018	journal	July 2011
A critical appraisal of NLO+PS matching methods Höche, Stefan; Krauss, Frank; Schönherr, Marek Journal of High Energy Physics, Vol. 2012, Issue 9 https://doi.org/10.1007/JHEP09(2012)049	journal	September 2012
NLO and off-shell effects in top quark mass determinations Heinrich, Gudrun; Maier, Andreas; Nisius, Richard Journal of High Energy Physics, Vol. 2018, Issue 7 https://doi.org/10.1007/JHEP07(2018)129	journal	July 2018
New clustering algorithm for multijet cross sections in e+e− annihilation Catani, S.; Dokshitzer, Yu. L.; Olsson, M. Physics Letters B, Vol. 269, Issue 3-4 https://doi.org/10.1016/0370-2693(91)90196-W	journal	October 1991
The anti- k _t jet clustering algorithm Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory Journal of High Energy Physics, Vol. 2008, Issue 04 https://doi.org/10.1088/1126-6708/2008/04/063	journal	April 2008
Matching NLO QCD computations and parton shower simulations Frixione, Stefano; Webber, Bryan R. Journal of High Energy Physics, Vol. 2002, Issue 06 https://doi.org/10.1088/1126-6708/2002/06/029	journal	June 2002
Simulation of QED radiation in particle decays using the YFS formalism Hamilton, Keith; Richardson, Peter Journal of High Energy Physics, Vol. 2006, Issue 07 https://doi.org/10.1088/1126-6708/2006/07/010	journal	July 2006
Techniques for the treatment of IR divergences in decay processes at NLO and application to the top-quark decay Basso, Lorenzo; Dittmaier, Stefan; Huss, Alexander The European Physical Journal C, Vol. 76, Issue 2 https://doi.org/10.1140/epjc/s10052-016-3878-2	journal	January 2016
Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays Melnikov, Kirill; Scharf, Andreas; Schulze, Markus Physical Review D, Vol. 85, Issue 5 https://doi.org/10.1103/PhysRevD.85.054002	journal	March 2012
MINLO: multi-scale improved NLO Hamilton, Keith; Nason, Paolo; Zanderighi, Giulia Journal of High Energy Physics, Vol. 2012, Issue 10 https://doi.org/10.1007/JHEP10(2012)155	journal	October 2012
Scattering Amplitudes with Open Loops Cascioli, F.; Maierhöfer, P.; Pozzorini, S. Physical Review Letters, Vol. 108, Issue 11 https://doi.org/10.1103/PhysRevLett.108.111601	journal	March 2012
On the ultimate uncertainty of the top quark pole mass Beneke, M.; Marquard, P.; Nason, P. Physics Letters B, Vol. 775 https://doi.org/10.1016/j.physletb.2017.10.054	journal	December 2017
Rivet user manual Buckley, Andy; Butterworth, Jonathan; Grellscheid, David Computer Physics Communications, Vol. 184, Issue 12 https://doi.org/10.1016/j.cpc.2013.05.021	journal	December 2013
A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms Nason, Paolo Journal of High Energy Physics, Vol. 2004, Issue 11 https://doi.org/10.1088/1126-6708/2004/11/040	journal	November 2004
A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX Alioli, Simone; Nason, Paolo; Oleari, Carlo Journal of High Energy Physics, Vol. 2010, Issue 6 https://doi.org/10.1007/JHEP06(2010)043	journal	June 2010
Parton-shower uncertainties with Herwig 7: benchmarks at leading order Bellm, Johannes; Nail, Graeme; Plätzer, Simon The European Physical Journal C, Vol. 76, Issue 12 https://doi.org/10.1140/epjc/s10052-016-4506-x	journal	December 2016
Coherent parton showers with local recoils Plätzer, Simon; Gieseke, Stefan Journal of High Energy Physics, Vol. 2011, Issue 1 https://doi.org/10.1007/JHEP01(2011)024	journal	January 2011
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations Alwall, J.; Frederix, R.; Frixione, S. Journal of High Energy Physics, Vol. 2014, Issue 7 https://doi.org/10.1007/JHEP07(2014)079	journal	July 2014
ExSample—a library for sampling Sudakov-type distributions Plätzer, Simon The European Physical Journal C, Vol. 72, Issue 3 https://doi.org/10.1140/epjc/s10052-012-1929-x	journal	March 2012
One-loop singular behaviour of QCD and SUSY QCD amplitudes with massive partons Catani, Stefano; Dittmaier, Stefan; Trócsányi, Zoltán Physics Letters B, Vol. 500, Issue 1-2 https://doi.org/10.1016/S0370-2693(01)00065-X	journal	February 2001
The dipole formalism for next-to-leading order QCD calculations with massive partons Catani, Stefano; Dittmaier, Stefan; Seymour, Michael H. Nuclear Physics B, Vol. 627, Issue 1-2 https://doi.org/10.1016/S0550-3213(02)00098-6	journal	April 2002
Matrix element corrections to parton shower simulations of heavy quark decay Corcella, G.; Seymour, M. H. Physics Letters B, Vol. 442, Issue 1-4 https://doi.org/10.1016/S0370-2693(98)01251-9	journal	December 1998
FastJet user manual: (for version 3.0.2) Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory The European Physical Journal C, Vol. 72, Issue 3 https://doi.org/10.1140/epjc/s10052-012-1896-2	journal	March 2012
Subleading Nc improved parton showers Plätzer, Simon; Sjödahl, Malin Journal of High Energy Physics, Vol. 2012, Issue 7 https://doi.org/10.1007/JHEP07(2012)042	journal	July 2012
A parton shower algorithm based on Catani-Seymour dipole factorisation Schumann, S.; Krauss, F. Journal of High Energy Physics, Vol. 2008, Issue 03 https://doi.org/10.1088/1126-6708/2008/03/038	journal	March 2008
NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers Heinrich, G.; Jones, S. P.; Kerner, M. Journal of High Energy Physics, Vol. 2017, Issue 8 https://doi.org/10.1007/JHEP08(2017)088	journal	August 2017
A general algorithm for calculating jet cross sections in NLO QCD Catani, S.; Seymour, M. H. Nuclear Physics B, Vol. 485, Issue 1-2 https://doi.org/10.1016/S0550-3213(96)00589-5	journal	February 1997
Top++: A program for the calculation of the top-pair cross-section at hadron colliders Czakon, Michał; Mitov, Alexander Computer Physics Communications, Vol. 185, Issue 11 https://doi.org/10.1016/j.cpc.2014.06.021	journal	November 2014
Simulation of QCD coherence in heavy quark production and decay Marchesini, G.; Webber, B. R. Nuclear Physics B, Vol. 330, Issue 1 https://doi.org/10.1016/0550-3213(90)90310-A	journal	January 1990
Monte Carlo simulation of hard radiation in decays in beyond the standard model physics in Herwig++ Richardson, Peter; Wilcock, Alexandra The European Physical Journal C, Vol. 74, Issue 1 https://doi.org/10.1140/epjc/s10052-014-2713-x	journal	January 2014
A simulation of QCD radiation in top quark decays Hamilton, Keith; Richardson, Peter Journal of High Energy Physics, Vol. 2007, Issue 02 https://doi.org/10.1088/1126-6708/2007/02/069	journal	February 2007
Dynamical scales for multi-TeV top-pair production at the LHC Czakon, Michał; Heymes, David; Mitov, Alexander Journal of High Energy Physics, Vol. 2017, Issue 4 https://doi.org/10.1007/JHEP04(2017)071	journal	April 2017
Dipole showers and automated NLO matching in Herwig++ Plätzer, Simon; Gieseke, Stefan The European Physical Journal C, Vol. 72, Issue 11 https://doi.org/10.1140/epjc/s10052-012-2187-7	journal	November 2012
Hard photon production and matrix-element parton-shower merging Höche, Stefan; Schumann, Steffen; Siegert, Frank Physical Review D, Vol. 81, Issue 3 https://doi.org/10.1103/PhysRevD.81.034026	journal	February 2010
Colour rearrangement for dipole showers Bellm, Johannes The European Physical Journal C, Vol. 78, Issue 7 https://doi.org/10.1140/epjc/s10052-018-6070-z	journal	July 2018
Gluon radiation in $t \bar{t}$ production and decay at the CERN LHC Orr, Lynne H.; Stelzer, T.; Stirling, W. J. Physical Review D, Vol. 56, Issue 1 https://doi.org/10.1103/PhysRevD.56.446	journal	July 1997
QCD corrections to top quark pair production in association with a photon at hadron colliders Melnikov, Kirill; Schulze, Markus; Scharf, Andreas Physical Review D, Vol. 83, Issue 7 https://doi.org/10.1103/PhysRevD.83.074013	journal	April 2011
An NLO+PS generator for $${\varvec{t \bar{t}}}$$ t t ¯ and $${\varvec{W t}}$$ W t production and decay including non-resonant and interference effects Ježo, Tomáš; Lindert, Jonas M.; Nason, Paolo The European Physical Journal C, Vol. 76, Issue 12 https://doi.org/10.1140/epjc/s10052-016-4538-2	journal	December 2016
Fragmentation uncertainties in hadronic observables for top-quark mass measurements Corcella, Gennaro; Franceschini, Roberto; Kim, Doojin Nuclear Physics B, Vol. 929 https://doi.org/10.1016/j.nuclphysb.2018.02.012	journal	April 2018
HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) Corcella, Gennaro; Knowles, Ian G.; Marchesini, Giuseppe Journal of High Energy Physics, Vol. 2001, Issue 01 https://doi.org/10.1088/1126-6708/2001/01/010	journal	January 2001
Merging NLO multi-jet calculations with improved unitarization Bellm, Johannes; Gieseke, Stefan; Plätzer, Simon The European Physical Journal C, Vol. 78, Issue 3 https://doi.org/10.1140/epjc/s10052-018-5723-2	journal	March 2018
Jets from massive unstable particles: Top-mass determination Fleming, Sean; Hoang, Andre H.; Mantry, Sonny Physical Review D, Vol. 77, Issue 7 https://doi.org/10.1103/PhysRevD.77.074010	journal	April 2008
Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through $O (α_{S}^{4})$ Czakon, Michał; Fiedler, Paul; Mitov, Alexander Physical Review Letters, Vol. 110, Issue 25 https://doi.org/10.1103/PhysRevLett.110.252004	journal	June 2013
Update on vector boson pair production at hadron colliders Campbell, J. M.; Ellis, R. K. Physical Review D, Vol. 60, Issue 11 https://doi.org/10.1103/PhysRevD.60.113006	journal	November 1999
New formalism for QCD parton showers Gieseke, Stefan; Stephens, Philip; Webber, Bryan Journal of High Energy Physics, Vol. 2003, Issue 12 https://doi.org/10.1088/1126-6708/2003/12/045	journal	December 2003

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