Leif Lönnblad

Simulation of e⁺e⁻ annihilation with quark spin effects

A. Kerbizi, L. Lönnblad, A. Martin
(2024) Proceedings of Science, 456
Conference paper

Non-relativistic quantum chromodynamics in parton showers

Naomi Cooke, Philip Ilten, Leif Lönnblad, Stephen Mrenna
(2024) European Physical Journal C, 84
Journal article

The dynamic hadronization of charm quarks in heavy-ion collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad, Harsh Shah
(2024) European Physical Journal C, 84
Journal article

Event generators for high-energy physics experiments

J.M. Campbell, C. Bierlich, S. Chakraborty, R. Frederix, L. Gellersen, et al.
(2024) SciPost Physics, 16
Journal article

Baryon correlations in Pythia

Leif Lönnblad, Harsh Shah
(2023) European Physical Journal C, 83
Journal article

Extending StringSpinner to handle vector-meson spin

Albi Kerbizi, Leif Lönnblad
(2023) Computer Physics Communications, 292
Journal article

A spatially constrained QCD colour reconnection in pp , p A , and AA collisions in the Pythia8/Angantyr model

Leif Lönblad, Harsh Shah
(2023) European Physical Journal C, 83
Journal article

A standard convention for particle-level Monte Carlo event-variation weights

Enrico Bothmann, Andy Buckley, Christian Gütschow, Stefan Prestel, Marek Schönherr, et al.
(2023) SciPost Physics Core, 6
Journal article

Impact of string interactions on the space–time evolution of hadronic vertices

Smita Chakraborty, Leif Lönnblad
(2023) European Physical Journal C, 83
Journal article

Strangeness enhancement across collision systems without a plasma

Christian Bierlich, Smita Chakraborty, Gösta Gustafson, Leif Lönnblad
(2022) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 835
Journal article

Jet modifications from colour rope formation in dense systems of non-parallel strings

Christian Bierlich, Smita Chakraborty, Gösta Gustafson, Leif Lönnblad
(2022) SciPost Physics, 13
Journal article

StringSpinner - adding spin to the PYTHIA string fragmentation

Albi Kerbizi, Leif Lönnblad
(2022) Computer Physics Communications, 272
Journal article

Hyperfine splitting effects in string hadronization

Christian Bierlich, Leif Lönnblad, Gösta Gustafson, Smita Chakraborty
(2022) European Physical Journal C. Particles and Fields
Journal article

A comprehensive guide to the physics and usage of PYTHIA 8.3

Christian Bierlich, Smita Chakraborty, Nishita Desai, Leif Gellersen, Ilkka Helenius, et al.
(2022) SciPost Physics
Journal article

Adding quark spin effects to PYTHIA string fragmentation

Albi Kerbizi, Leif Lönnblad
(2022) Proceedings of Science, 414
Conference paper

Challenges 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 article

The Angantyr model for heavy ions in Pythia8

Leif Lönnblad
(2021) Nuclear Physics A, 1005
Journal article

Setting the string shoving picture in a new frame

Christian Bierlich, Smita Chakraborty, Gösta Gustafson, Leif Lönnblad
(2021) Journal of High Energy Physics
Journal article

The HepMC3 event record library for Monte Carlo event generators

Andy Buckley, Philip Ilten, Dmitri Konstantinov, Leif Lönnblad, James Monk, et al.
(2021) Computer Physics Communications, 260
Journal article

Confronting experimental data with heavy-ion models : Rivet for heavy ions

Christian Bierlich, Andy Buckley, Christian Holm Christensen, Peter Harald Lindenov Christiansen, Cody B. Duncan, et al.
(2020) European Physical Journal C, 80
Journal article

Four-jet double parton scattering production in proton-nucleus collisions within the pythia 8 framework

Oleh Fedkevych, Leif Lönnblad
(2020) Physical Review D, 102
Journal article

QCD challenges from pp to A–A collisions

J. Adolfsson, A. Andronic, C. Bierlich, P. Bozek, S. Chakraborty, et al.
(2020) European Physical Journal A, 56
Journal article review

Robust independent validation of experiment and theory : RIVET version 3

Christian Bierlich, Andy Buckley, Jonathan Butterworth, Christian Holm Christensen, Louie Corpe, et al.
(2020) SciPost Physics, 8
Journal article

Inclusion of the ³P₀ model in PYTHIA 8

Albi Kerbizi, Leif Lönnblad
(2019)
Conference paper

Dipoles in Impact Parameter Space and Rapidity

Gösta Gustafson, Leif Lönnblad
(2019) Advanced Series on Directions in High Energy Physics, 29 p.359-376
Book chapter

Modelling pp, pA and AA in Pythia8

Leif Lönnblad
(2019) EPJ Web of Conferences, 208 p.11003-11003
Journal article

Monte Carlo event generators for high energy particle physics event simulation

Andy Buckley, Frank Krauss, Simon Plätzer, Michael Seymour, Simone Alioli, et al.
(2019)
Preprint

Collectivity without plasma in hadronic collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad
(2018) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 779 p.58-63
Journal article

Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report

Jeppe R. Andersen, Johannes Bellm, J Bendavid, N Berger, Leif Lönnblad, et al.
(2018) arXiv.org, 1803
Preprint

Merging high energy with soft and collinear logarithms using HEJ and PYTHIA

Jeppe R. Andersen, Helen M. Brooks, Leif Lönnblad
(2018) Journal of High Energy Physics, 2018
Journal article

The Angantyr model for heavy-ion collisions in Pythia8

Christian Bierlich, Gösta Gustafson, Leif Lönnblad, Harsh Shah
(2018) Journal of High Energy Physics, 2018
Journal article

Systematics of quark/gluon tagging

Philippe Gras, Stefan Höche, Deepak Kar, Andrew Larkoski, Leif Lönnblad, et al.
(2017) Journal of High Energy Physics, 2017
Journal article

Generation of central exclusive final states

Leif Lönnblad, Radek Zlebcik
(2016) European Physical Journal C. Particles and Fields, 76
Journal article

Diffractive and non-diffractive wounded nucleons and final states in pA collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad
(2016) Journal of High Energy Physics, 2016
Journal article

Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report

Rikkert Frederix, Leif Lönnblad, Stefan Prestel, Korinna Zapp, Jeppe Andersen, et al.
(2016)
Report

A shoving model for collectivity in hadronic collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad
(2016) arXiv.org, 1612
Journal article

Contribution of indoor-generated particles to residential exposure

Christina Isaxon, Anders Gudmundsson, Erik Nordin, Leif Lönnblad, Andreas Dahl, et al.
(2015) Atmospheric Environment, 106 p.458-466
Journal article

Effects of overlapping strings in pp collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad, Andrey Tarasov
(2015) Journal of High Energy Physics
Journal article

Total, inelastic and (quasi-)elastic cross sections of high energy pA and γ$^{⋆}$ A reactions with the dipole formalism

Gösta Gustafson, Leif Lönnblad, András Ster, Tamás Csörgő
(2015) Journal of High Energy Physics, 2015
Journal article

Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report

Jeppe R. Andersen, Rikkert Frederix, Leif Lönnblad, Korinna Zapp
(2014)
Report

Contribution of indoor generated submicrometer particles to residential exposure

Christina Isaxon, Anders Gudmundsson, Erik Nordin, Leif Lönnblad, Andreas Dahl, et al.
(2014) , p.64-67
Conference paper

Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report

J. Butterworth, G. Dissertori, S. Dittmaier, D. de Florian, N. Glover, et al.
(2014)
Conference paper

Rivet user manual

Andy Buckley, Jonathan Butterworth, David Grellscheid, Hendrik Hoeth, Leif Lönnblad, et al.
(2013) Computer Physics Communications, 184 p.2803-2819
Journal article

Fooling around with the Sudakov veto algorithm

Leif Lönnblad
(2013) European Physical Journal C. Particles and Fields, 73
Journal article

Merging multi-leg NLO matrix elements with parton showers

Leif Lönnblad, Stefan Prestel
(2013) Journal of High Energy Physics, 2013
Journal article

Unitarising matrix element + parton shower merging

Leif Lönnblad, Stefan Prestel
(2013) Journal of High Energy Physics, 2013 p.31-094
Journal article

Matching tree-level matrix elements with interleaved showers

Leif Lönnblad, Stefan Prestel
(2012) Journal of High Energy Physics
Journal article

Exclusive final states in diffractive excitation

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad
(2012) Journal of High Energy Physics, 2012
Journal article

The SM and NLO Multileg and SM MC Working Groups: Summary Report

J. Alcaraz Maestre, Leif Lönnblad, Korinna Zapp
(2012) Proceedings, 7th Les Houches Workshop on Physics at TeV Colliders: Les Houches, France, May 30-June 17, 2011 , p.1-220
Conference paper

General-purpose event generators for LHC physics

Andy Buckley, Jonathan Butterworth, Stefan Gieseke, David Grellscheid, Stefan Hoeche, et al.
(2011) Physics Reports, 504 p.145-233
Journal article review

Correlations in double parton distributions at small x

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad, Andras Ster
(2011) Journal of High Energy Physics, 2011 p.1-21
Journal article

A Parton Shower for High Energy Jets

Jeppe Andersen, Leif Lönnblad, Jennifer Smillie
(2011) Journal of High Energy Physics, 2011 p.1-23
Journal article

Inclusive and exclusive observables from dipoles in high energy collisions

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad
(2011) Journal of High Energy Physics, 2011
Journal article

THE TOOLS AND MONTE CARLO WORKING GROUP Summary Report from the Les Houches 2009 Workshop on TeV Colliders

J. M. Butterworth, Leif Lönnblad, Torbjörn Sjöstrand, Peter Skands
(2010) Physics at TeV colliders. Proceedings, 6th Workshop, dedicated to Thomas Binoth, Les Houches, France, June 8-26, 2009
Conference paper

Elastic and quasi-elastic pp and gamma * p scattering in the dipole model

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad
(2009) European Physical Journal C. Particles and Fields, 60 p.233-247
Journal article

Multi-Jet Final States and Energy Flows

(2009)
Conference publication

ThePEG Toolkit for High Energy Physics Event Generation

Leif Lönnblad
(2009) [Host publication title missing] , p.733-736
Conference paper

CKKW merging at NLO

Leif Lönnblad
(2009) Proceedings, 17th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2009): Madrid, Spain, April 26-30, 2009 , p.98-98
Conference paper

Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions

J. Alwall, S. Hoeche, F. Krauss, Nils Lavesson, Leif Lönnblad, et al.
(2008) European Physical Journal C. Particles and Fields, 53 p.473-500
Journal article

Leif Lönnblad - Professor i teoretisk fysik

Leif Lönnblad
(2008)
Other

Extending CKKW-merging to One-Loop Matrix Elements

Nils Lavesson, Leif Lönnblad
(2008) Journal of High Energy Physics, 12
Journal article

Merging parton showers and matrix elements -- back to basics

Nils Lavesson, Leif Lönnblad
(2008) Journal of High Energy Physics, 4
Journal article

Diffractive and elastic scattering in the dipole model

Leif Lonnblad
(2008) Acta Physica Polonica B, Proceedings Supplement, 1 p.485-488
Journal article

CEDAR: Progress and status report

A. Buckley, J. M. Butterworth, L. Lonnblad, J. W. Monk, E. Nurse, et al.
(2008) Journal of Physics: Conference Series, 119
Journal article

What HERA may provide?

Hannes Jung, Albert De Roeck, J Bartels, J. Blümlein, Stanley J. Brodsky, et al.
(2008) Proceedings, 16th International Workshop on Deep Inelastic Scattering and Related Subjects (DIS 2008): London, UK, April 7-11, 2008 , p.17-17
Conference paper

A standard format for Les Houches Event Files

J. Alwall, A. Ballestrero, P. Bartalini, S. Belov, E. Boos, et al.
(2007) Computer Physics Communications, 176 p.300-304
Journal article

String effects on Fermi-Dirac correlation measurements

R. M. Duran Delgado, Gösta Gustafson, Leif Lönnblad
(2007) European Physical Journal C. Particles and Fields, 52 p.113-119
Journal article

HZTool and Rivet: Toolkit and Framework for the Comparison of Simulated Final States and Data at Colliders.

B.M. Waugh, Hannes Jung, A Buckley, Leif Lönnblad, J.M. Butterworth, et al.
(2007) IEEE transactions on nuclear science
Conference paper

Diffractive Excitation in DIS and pp Collisions

Emil Avsar, Gösta Gustafson, Leif Lönnblad
(2007) Journal of High Energy Physics, 0712
Journal article

THEPEG, HERWIG++ and ARIADNE

Leif Lönnblad
(2007) Deep Inelastic Scattering , p.503-506
Conference paper

ThePEG, Herwig plus plus and Ariadne

Leif Lönnblad
(2007) Deep Inelastic Scattering , p.503-506
Conference paper

Hans-Uno Bengtsson - Docent i teoretisk fysik och folkbildare, dog den 18 maj 2007, 54 år gammal

Johan Bijnens, Gösta Gustafson, Anders Irbäck, Leif Lönnblad, Carsten Peterson, et al.
(2007)
Other

Small-x dipole evolution beyond the large-N-c limit

Emil Avsar, Gösta Gustafson, Leif Lönnblad
(2007) Journal of High Energy Physics
Journal article

Classical and non-classical ADD-phenomenology with high-E-perpendicular to jet observables at collider experiments

Leif Lönnblad, Malin Sjödahl
(2006) Journal of High Energy Physics
Journal article

ThePEG, PYTHIA7, HERWIG ++ and ARIADNE

Leif Lönnblad
(2006) Proceedings of the X International Workshop on Advanced Computing and Analysis Techniques in Physics Research - ACAT 05 (Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment), 559 p.246-248
Conference paper

Small-x phenomenology - Summary of the 3rd Lund small-x workshop in 2004

J. R. Andersen, S. Baranov, J. Bartels, G. G. Barnafoldi, G. Chachamis, et al.
(2006) European Physical Journal C. Particles and Fields, 48 p.53-105
Journal article review

Introduction to multi-jet final states and energy flows

C Buttar, J Butterworth, V Khoze, Leif Lönnblad, N Tuning
(2006) CERN Reports, CERN-2005-014 p.183-191
Conference paper

THEPEG: Toolkit for High Energy Physics Event Generation

Leif Lönnblad
(2005) CERN Reports, CERN-2005-014 p.582-584
Conference paper

Forward jets and multiple interactions

Leif Lönnblad, J Turnau
(2005) CERN Reports, CERN-2005-014 p.218-220
Conference paper

Uncertainties on central exclusive scalar luminosities from the unintegrated gluon distributions.

Leif Lönnblad, Malin Sjödahl
(2005) Journal of High Energy Physics, 5
Journal article

Energy conservation and saturation in small-x evolution

Emil Avsar, Gösta Gustafson, Leif Lönnblad
(2005) Journal of High Energy Physics
Journal article

QCD-supression by black hole production at the LHC

Leif Lönnblad, Malin Sjödahl, Torsten Åkesson
(2005) Journal of High Energy Physics
Journal article

Unintegrated parton density functions

J Collins, M Diehl, Hannes Jung, Leif Lönnblad, M Lublisnky, et al.
(2005) CERN Reports, CERN-2005-014 p.256-273
Conference paper

Matching Parton Showers and Matrix Elements

Stefan Hoeche, Frank Krauss, Nils Lavesson, Leif Lönnblad, Michelangelo Mangano, et al.
(2005) CERN Reports, CERN-2005-014 p.288-299
Conference paper

Ariadne at HERA and at the LHC

Leif Lönnblad
(2005) CERN Reports, CERN-2005-014 p.592-595
Conference paper

Monte Carlo generators

Leif Lönnblad
(2005) Acta Physica Polonica. Series B: Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory, 36 p.401-408
Journal article

HERA and the LHC: A Workshop on the implications of HERA for LHC physics

S. Alekhin, Nils Lavesson, Leif Lönnblad, Torbjörn Sjöstrand
(2005) CERN-2005-014 , p.1-632
Conference paper

CEDAR

A Buckley, J.M. Butterworth, S Butterworth, Leif Lönnblad, W.J. Stirling, et al.
(2005) CERN Reports, CERN-2005-014 p.621-623
Conference paper

W+jets matrix elements and the dipole cascade

Nils Lavesson, Leif Lönnblad
(2005) Journal of High Energy Physics, 7
Journal article

Introduction to multi-jet final states and energy flows

Craig Buttar, Jon Butterworth, Valery Khoze, Leif Lönnblad, Niels Tuning
(2005) HERA and the LHC: A Workshop on the implications of HERA for LHC physics: Proceedings Part A , p.183-191
Conference paper

Monte Carlo generators

L. Lonnblad
(2005) Acta Phys. Polon. Supp., 36 p.401-408
Journal article

Central exclusive scalar luminosities from the linked dipole chain model gluon densities

Leif Lönnblad, Malin Sjödahl
(2004) Journal of High Energy Physics
Journal article

Small-x phenomenology - summary and status 2002

JR Andersen, S Baranov, J Collins, Y Dokshitzer, L Goerlich, et al.
(2004) European Physical Journal C. Particles and Fields, 35 p.67-98
Journal article review

Unintegrated gluon densities in the LDC model

Leif Lönnblad
(2004) [Host publication title missing], I p.344-347
Conference paper

ThePEG, Pythia7 and Ariadne

Leif Lönnblad
(2004) [Host publication title missing], II p.668-671
Conference paper

Study of the linked dipole chain model in heavy quark production at the Tevatron

AV Lipatov, Leif Lönnblad, NP Zotov
(2004) Journal of High Energy Physics
Journal article

Status of the PYTHIA7 project

Leif Lönnblad
(2003) Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 502 p.549-551
Journal article

Hadronic collisions in the linked dipole chain model

Gösta Gustafson, Leif Lönnblad, Gabriela Miu
(2003) Physical Review D (Particles, Fields, Gravitation and Cosmology), 67:034020
Journal article

PYTHIA 6.3 Physics and Manual

Torbjörn Sjöstrand, Leif Lönnblad, Stephen Mrenna, Peter Skands
(2003) hep-ph/0308153
Report

Les Houches Guidebook to Monte Carlo Generators for Hadron Collider Physics

H Baer, Leif Lönnblad, Torbjörn Sjöstrand, Peter Skands, et al
(2003) , p.411-459
Conference paper

Gluon distribution functions in the k(perpendicular to) -factorization approach

Gösta Gustafson, Leif Lönnblad, Gabriela Miu
(2002) Journal of High Energy Physics
Journal article

Modeling diffractive final states

Leif Lönnblad
(2002) Acta Physica Polonica B, 33 p.3231-3236
Conference paper

Multi-hadron final states

Leif Lönnblad, J Repond, M Zielinski
(2002) Acta Physica Polonica B, 33 p.3329-3347
Conference paper

Small x phenomenology: summary and status

Bo Andersson, S Baranov, J Bartels, M Ciafaloni, J Collins, et al.
(2002) European Physical Journal C. Particles and Fields, 25 p.77-101
Journal article review

Combining matrix elements and the dipole cascade model

Leif Lönnblad
(2002) Acta Physica Polonica B, 33 p.3171-3176
Conference paper

Hadronic final state predictions from CCFM generators

Leif Lönnblad, Hannes Jung
(2002) The Science and Culture Series , p.467-470
Conference paper

The QCD / SM working group: Summary report

Walter Giele, Leif Lönnblad, Torbjörn Sjöstrand
(2002) Workshop On Physics At TeV Colliders , p.275-426
Conference paper

Correcting the colour-dipole cascade model with fixed order matrix elements

Leif Lönnblad
(2002) Journal of High Energy Physics
Journal article

The QCD / SM working group: Summary report

Walter Giele, E.W.N. Glover, I. Hinchliffe, J. J. Huston, Eric Laenen, et al.
(2002) Physics at TeV colliders. Proceedings, Euro Summer School, Les Houches, France, May 21-June 1, 2001 , p.275-426
Conference paper

High-energy-physics event generation with PYTHIA 6.1

Torbjörn Sjöstrand, Patrik Edén, Christer Friberg, Leif Lönnblad, Gabriela Miu, et al.
(2001) Computer Physics Communications, 135 p.238-259
Journal article

PYTHIA version 7-0.0 - a proof-of-concept version

Marc Bertini, Leif Lönnblad, Torbjörn Sjöstrand
(2001) Computer Physics Communications, 134 p.365-391
Journal article

Matching the dipole cascade model with fixed order matrix elements

Leif Lönnblad
(2001) Computational particle physics. Proceedings, 2nd CPP Symposium, Tokyo, Japan, November 27-30, 2001 , p.129-133
Conference paper

TESLA: The superconducting electron positron linear collider with an integrated X-ray laser laboratory. Technical design report. Pt. 6: Appendices. Chapter 2: THERA: Electron proton scattering at s**(1/2) approximately 1-TeV

H. Abramowicz, Leif Lönnblad
(2001) DESY Report
Journal article

Leif Lönnblad

Research

Teaching

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