Rikkert Frederix
Senior lecturer
My current research is on phenomenology of high-energy particle physics, in particular related to hard processes at the Large Hadron Collider (LHC). This includes trying to resolve possible discrepancies between data and theory predictions; improve the accuracy of predictions and to show how these improved predictions might affect current and future measurements; to check the self- consistency of various levels of sophistication within theory predictions; and study what to expect from theories that go beyond the Standard Model of particle physics. Most of my projects make use of the MadGraph5_aMC@NLO matrix element event generator, but certainly not exclusively. Although in practice a major part of my research is in the development of matrix-element event generators, the driving force has never been the improvement of these codes per se, but rather the use of these codes to understand current and future LHC data.
Publications
Displaying of publications. Sorted by year, then title.
Five-flavour scheme predictions for tt¯bb¯ at next-to-leading order accuracy
Rikkert Frederix, Tetiana Moskalets
(2024) European Physical Journal C, 84
Journal articleMatrix element corrections in top quark decays for the tt¯W± process
Rikkert Frederix, Leif Gellersen, Jasmina Nasufi
(2024) European Physical Journal C, 84
Journal articleEvent generators for high-energy physics experiments
J.M. Campbell, C. Bierlich, S. Chakraborty, R. Frederix, L. Gellersen, et al.
(2024) SciPost Physics, 16
Journal articleA new way of reducing negative weights in MC@NLO
Rikkert Frederix, Paolo Torrielli
(2023) European Physical Journal C, 83
Journal articleChallenges in Monte Carlo Event Generator Software for High-Luminosity LHC
Andrea Valassi, Efe Yazgan, Josh McFayden, Simone Amoroso, Joshua Bendavid, et al.
(2021) Computing and Software for Big Science, 5
Journal articleThe colour matrix at next-to-leading-colour accuracy for tree-level multi-parton processes
Rikkert Frederix, Timea Vitos
(2021) Journal of High Energy Physics, 2021
Journal articlett̄X Calculations and Modeling
Alessandro Broggio, Andrea Ferroglia, Rikkert Frederix, Davide Pagani, Benjamin D. Pecjak, et al.
(2021) Proceedings of Science, 397
Conference paperOn improving NLO merging for t t ¯ W production
Rikkert Frederix, Ioannis Tsinikos
(2021) Journal of High Energy Physics, 2021
Journal articleProbing the spin correlations of tt¯ production at NLO QCD+EW
Rikkert Frederix, Ioannis Tsinikos, Timea Vitos
(2021) European Physical Journal C, 81
Journal articleElectroweak corrections to the angular coefficients in finite- pT Z-boson production and dilepton decay
Rikkert Frederix, Timea Vitos
(2020) European Physical Journal C, 80
Journal articleSubleading EW corrections and spin-correlation effects in tt¯ W multi-lepton signatures
Rikkert Frederix, Ioannis Tsinikos
(2020) European Physical Journal C, 80
Journal articleOn the reduction of negative weights in MC@NLO-type matching procedures
R. Frederix, S. Frixione, S. Prestel, P. Torrielli
(2020) Journal of High Energy Physics, 2020
Journal articlePrecise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature
Rikkert Frederix, Davide Pagani, Ioannis Tsinikos
(2019) Journal of High Energy Physics, 2019
Journal articleTop-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections
Alessandro Broggio, Andrea Ferroglia, Rikkert Frederix, Davide Pagani, Benjamin D. Pecjak, et al.
(2019) Journal of High Energy Physics, 2019
Journal articleAccurate predictions for t-channel single top-quark production
Rikkert Frederix
(2019) Proceedings, 11th International Workshop on Top Quark Physics (TOP2018)
Conference paperMINLO t-channel single-top plus jet
Stefano Carrazza, Rikkert Frederix, Keith Hamilton, Giulia Zanderighi
(2018) Journal of High Energy Physics, 2018
Journal articlePrecise predictions for same-sign W-boson scattering at the LHC
Alessandro Ballestrero, Benedikt Biedermann, Simon Brass, Ansgar Denner, Stefan Dittmaier, et al.
(2018) European Physical Journal C, 78
Journal articleThe automation of next-to-leading order electroweak calculations
R. Frederix, S. Frixione, V. Hirschi, D. Pagani, H. S. Shao, et al.
(2018) Journal of High Energy Physics, 2018
Journal articleLarge NLO corrections in tt¯ W± and tt¯ tt¯ hadroproduction from supposedly subleading EW contributions
Rikkert Frederix, Davide Pagani, Marco Zaro
(2018) Journal of High Energy Physics, 2018
Journal articleMulti-leg Hadronic Final State: calculation and simulation
Rikkert Frederix
(2018) Proceedings of Science, 316
Conference paperAccurate predictions for charged Higgs production : Closing the mH±∼mt window
Céline Degrande, Rikkert Frederix, Valentin Hirschi, Maria Ubiali, Marius Wiesemann, et al.
(2017) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 772 p.87-92
Journal articleProbing the CP nature of the Higgs coupling in tt¯h events at the LHC
S P Amor Dos Santos, M. C.N. Fiolhais, R. Frederix, R. Gonçalo, E. Gouveia, et al.
(2017) Physical Review D, 96
Journal articleMinlo for multi-jet processes
Rikkert Frederix
(2017) Acta Physica Polonica B, 48 p.987-994
Conference paperThe complete NLO corrections to dijet hadroproduction
R. Frederix, S. Frixione, V. Hirschi, D. Pagani, H. S. Shao, et al.
(2017) Journal of High Energy Physics, 2017
Journal articleHandbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector
Rikkert Frederix, Christian Reuschle
(2016) CERN Yellow Reports: Monographs
ReportSpin correlations in top pair with di-gamma production at NLO+PS
Rikkert Frederix
(2016) Proceedings of Science, 276
Conference paperHeavy-quark mass effects in Higgs plus jets production
R. Frederix, S. Frixione, E. Vryonidou, M. Wiesemann
(2016) Journal of High Energy Physics, 2016
Journal articleOff-shell single-top production at NLO matched to parton showers
R. Frederix, S. Frixione, A. S. Papanastasiou, S. Prestel, P. Torrielli
(2016) Journal of High Energy Physics, 2016
Journal articleLes Houches 2015: Physics at TeV Colliders Standard Model Working Group Report
Rikkert Frederix, Leif Lönnblad, Stefan Prestel, Korinna Zapp, Jeppe Andersen, et al.
(2016)
ReportExtending the Minlo method
Rikkert Frederix, Keith Hamilton
(2016) Journal of High Energy Physics, 2016
Journal articleEnhancing the ttH signal through top-quark spin polarization effects at the LHC
Sanjoy Biswas, Rikkert Frederix, Emidio Gabrielli, Barbara Mele
(2016) Nuclear and Particle Physics Proceedings, 273-275 p.721-726
Conference paperSpin polarisation of ttyy production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO
Hans van Deurzen, Rikkert Frederix, Valentin Hirschi, Gionata Luisoni, Pierpaolo Mastrolia, et al.
(2016) European Physical Journal C, 76
Journal articleMonte Carlo developments and data comparison
Rikkert Frederix
(2016) Proceedings of Science, 276
Conference paperA study of multi-jet production in association with an electroweak vector boson
R. Frederix, S. Frixione, A. Papaefstathiou, S. Prestel, P. Torrielli
(2016) Journal of High Energy Physics, 2016
Journal articleAngular distributions in t t ¯ H (H →b b ¯) reconstructed events at the LHC
S. P. Amor Dos Santos, J. P. Araque, R. Cantrill, N. F. Castro, M. C.N. Fiolhais, et al.
(2015) Physical Review D - Particles, Fields, Gravitation and Cosmology, 92
Journal articleAutomated NNLL + NLO resummation for jet-veto cross sections
Thomas Becher, Rikkert Frederix, Matthias Neubert, Lorena Rothen
(2015) European Physical Journal C, 75
Journal articleHiggs production in association with bottom quarks
M. Wiesemann, R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, et al.
(2015) Journal of High Energy Physics, 2015
Journal articleT -odd asymmetry in W+ jet events at the LHC
Rikkert Frederix, Kaoru Hagiwara, Toshifumi Yamada, Hiroshi Yokoya
(2014) Physical Review Letters, 113
Journal articleAmcfast : Automation of fast NLO computations for PDF fits
Valerio Bertone, Rikkert Frederix, Stefano Frixione, Juan Rojo, Mark Sutton
(2014) Journal of High Energy Physics, 2014
Journal articleThe automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
J. Alwall, R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, et al.
(2014) Journal of High Energy Physics, 2014
Journal articleEnhancing the tt̄H signal through top-quark spin polarization effects at the LHC
S. Biswas, R. Frederix, E. Gabrielli, B. Mele
(2014) Journal of High Energy Physics, 2014
Journal articleLes Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report
Jeppe R. Andersen, Rikkert Frederix, Leif Lönnblad, Korinna Zapp
(2014)
ReportHiggs pair production at the LHC with NLO and parton-shower effects
R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, O. Mattelaer, et al.
(2014) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 732 p.142-149
Journal articleTop quark induced backgrounds to higgs production in the W W (*) → l l ν ν decay channel at next-to-leading-order in QCD
R. Frederix
(2014) Physical Review Letters, 112
Journal articleDrell-Yan, ZZ, W+W- production in SM & ADD model to NLO+PS accuracy at the LHC
R. Frederix, M. K. Mandal, P. Mathews, V. Ravindran, S. Seth
(2014) European Physical Journal C, 74
Journal articleUpdate of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
S. Alioli, S. Badger, Johannes Bellm, B. Biedermann, F. Boudjema, et al.
(2013) Computer Physics Communications, 185 p.560-571
Journal articleSingle-top t-channel production with off-shell and non-resonant effects
A. S. Papanastasiou, R. Frederix, S. Frixione, V. Hirschi, F. Maltoni
(2013) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 726 p.223-227
Journal articleHandbook of LHC Higgs Cross Sections: 3. Higgs Properties
S. Heinemeyer, Rikkert Frederix, S. Zuberi
(2013)
ReportAutomatic spin-entangled decays of heavy resonances in Monte Carlo simulations
Pierre Artoisenet, Rikkert Frederix, Olivier Mattelaer, Robbert Rietkerk
(2013) Journal of High Energy Physics, 2013
Journal articleA framework for Higgs characterisation
P. Artoisenet, P. De Aquino, F. Demartin, R. Frederix, S. Frixione, et al.
(2013) Journal of High Energy Physics, 2013
Journal articleDiphoton production in the ADD model to NLO + parton shower accuracy at the LHC
R. Frederix, Manoj K. Mandal, Prakash Mathews, V. Ravindran, Satyajit Seth, et al.
(2012) Journal of High Energy Physics, 2012
Journal articleMerging meets matching in MC@NLO
Rikkert Frederix, Stefano Frixione
(2012) Journal of High Energy Physics, 2012
Journal articleAMC@NLO predictions for W jj production at the Tevatron
Rikkert Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Roberto Pittau, et al.
(2012) Journal of High Energy Physics, 2012
Journal articleW boson plus heavy flavour (theory)
R. Frederix
(2012) Nuovo Cimento della Societa Italiana di Fisica C, 35 p.29-32
Conference paperNLO Higgs boson production plus one and two jets using the POWHEG BOX, MadGraph4 and MCFM
John M. Campbell, R. Keith Ellis, Rikkert Frederix, Paolo Nason, Carlo Oleari, et al.
(2012) Journal of High Energy Physics, 2012
Journal articleSingle-top t-channel hadroproduction in the four-flavour scheme with POWHEG and aMC@NLO
Rikkert Frederix, Emanuele Re, Paolo Torrielli
(2012) Journal of High Energy Physics, 2012
Journal articleFour-lepton production at hadron colliders : AMC@NLO predictions with theoretical uncertainties
Rikkert Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Roberto Pittau, et al.
(2012) Journal of High Energy Physics, 2012
Journal articleTop quark phenomenology : An overview
Rikkert Frederix
(2011) Proceedings, 40th International Symposium on Multiparticle Dynamics (ISMD 2010) : Antwerp, Belgium, September 21-25, 2010 , p.35-41
Conference paperW and Z/γ* boson production in association with a bottom-antibottom pair
Rikkert Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Roberto Pittau, et al.
(2011) Journal of High Energy Physics, 2011
Journal articleAutomation of one-loop QCD computations
Valentin Hirschi, Rikkert Frederix, Stefano Frixione, Maria Vittoria Garzelli, Fabio Maltoni, et al.
(2011) Journal of High Energy Physics, 2011
Journal articleScalar and pseudoscalar Higgs production in association with a top-antitop pair
R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, R. Pittau, et al.
(2011) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 701 p.427-433
Journal articleNLO QCD corrections to five-jet production at LEP and the extraction of α s(M Z)
Rikkert Frederix, Stefano Frixione, Kirill Melnikov, Giulia Zanderighi
(2010) Journal of High Energy Physics, 2010
Journal articleA proposal for a standard interface between Monte Carlo tools and one-loop programs
T. Binoth, F. Boudjema, G. Dissertori, A. Lazopoulos, A. Denner, et al.
(2010) Computer Physics Communications, 181 p.1612-1622
Journal articleTop quark phenomenology
Rikkert Frederix
(2010) Hadron collider physics. Proceedings, 22nd Conference, HCP 2010, Toronto, Canada, August 23-27, 2010
Conference paperIntegrated dipoles with maddipole in the MadGraph framework
R. Frederix, T. Gehrmann, N. Greiner
(2010) Journal of High Energy Physics, 2010
Journal articlePredictions for single-top cross sections
R. Frederix
(2010) Nuovo Cimento della Societa Italiana di Fisica C, 33 p.125-132
Conference paperThe automation of subtraction schemes for next-to-leading order calculations in QCD
Rikkert Frederix
(2010) Proceedings of Science, 93
Conference paperAutomation of next-to-leading order computations in QCD : The FKS subtraction
Rikkert Frederix, Stefano Frixione, Fabio Maltoni, Tim Stelzer
(2009) Journal of High Energy Physics, 2009
Journal articleNLO predictions for t-channel production of single top and fourth generation quarks at hadron colliders
John M. Campbell, Rikkert Frederix, Fabio Maltoni, Francesco Tramontano
(2009) Journal of High Energy Physics, 2009
Journal articleNext-to-leading-order predictions for t-channel single-top production at hadron colliders
J. M. Campbell, R. Frederix, F. Maltoni, F. Tramontano
(2009) Physical Review Letters, 102
Journal articleTop pair invariant mass distribution : A window on new physics
Rikkert Frederix, Fabio Maltoni
(2009) Journal of High Energy Physics, 2009
Journal articleAutomation of NLO computations using the FKS subtraction method
Rikkert Frederix
(2009) Proceedings of Science, 92
Conference paperNew developments in madgraph/madevent
J. Alwall, P. Artoisenet, S. De Visscher, C. Duhr, R. Frederix, et al.
(2008) AIP Conference Proceedings, 1078 p.84-89
Conference paperRecent developments in MadGraph/MadEvent v4
Rikkert Frederix
(2008) Nuclear Physics B - Proceedings Supplements, 183 p.285-289
Conference paperMadDipole : Automation of the dipole subtraction method in MadGraph/MadEvent
R. Frederix, T. Gehrmann, N. Greiner
(2008) Journal of High Energy Physics, 2008
Journal articleCollider aspects of flavor physics at high Q
T. Lari, Rikkert Frederix, Peter Skands, M. Yilmaz
(2008) European Physical Journal C, 57 p.183-307
Journal articleConstraining CKM elements with direct top measurements
R. Frederix
(2008) Nuovo Cimento B. Basic Topics in Physics, 123 p.1118-1121
Journal articleHigher-order QCD effects in the Higgs to ZZ search channel at the LHC
Rikkert Frederix, Massimiliano Grazzini
(2008) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 662 p.353-359
Journal articleMadGraph/MadEvent v4 : The new web generation
Johan Alwall, Pavel Demin, Simon De Visscher, Rikkert Frederix, Michel Herquet, et al.
(2007) Journal of High Energy Physics, 2007
Journal articleMadGraph/MadEvent v4 : From models to events
Rikkert Frederix
(2007) Proceedings of Science, 50
Conference paperIs Vtb ≃ 1?
J. Alwall, R. Frederix, J. M. Gérard, A. Giammanco, M. Herquet, et al.
(2007) European Physical Journal C, 49 p.791-801
Journal article