Leif Lönnblad

A parton shower consistent with parton densities at LO and NLO : PDF2ISR

Hannes Jung, Leif Lönnblad, Mikel Mendizabal, Sara Taheri Monfared
(2026) Proceedings of Science, 508
Paper in conference proceeding

Going against the flow : Revealing the QCD degrees of freedom in hadronic collisions

Christian Bierlich, Peter Christiansen, Gösta Gustafson, Leif Lönnblad, Robin Törnkvist, et al.
(2026) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 874
Article

A spacetime model for the perturbative swing

Torbjörn Lundberg, Leif Lönnblad
(2025) European Physical Journal C, 85
Article

A parton shower consistent with parton densities at LO and NLO : Pdf2Isr

H. Jung, L. Lönnblad, M. Mendizabal, Sara Taheri Monfared
(2025) European Physical Journal C, 85
Article

Non-relativistic quantum chromodynamics in parton showers

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

Simulation of e⁺e⁻ annihilation with quark spin effects

A. Kerbizi, L. Lönnblad, A. Martin
(2024) Proceedings of Science, 456
Paper in conference proceeding

Quark spin effects in e+e- annihilation : A Monte Carlo event generator study

A. Kerbizi, L. Lönnblad, A. Martin
(2024) Physical Review D, 110
Article

Monte Carlo results on the Collins asymmetries in e⁺e⁻ annihilation

A. Kerbizi, L. Lönnblad, A. Martin
(2024) Proceedings of Science, 477
Paper in conference proceeding

Baryon correlations in Pythia

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

Extending StringSpinner to handle vector-meson spin

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

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

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

Hyperfine splitting effects in string hadronization

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

StringSpinner - adding spin to the PYTHIA string fragmentation

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

Adding quark spin effects to PYTHIA string fragmentation

Albi Kerbizi, Leif Lönnblad
(2022) Proceedings of Science, 414
Paper in conference proceeding

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
Article

Setting the string shoving picture in a new frame

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

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
Article

The Angantyr model for heavy ions in Pythia8

Leif Lönnblad
(2021) Nuclear Physics A, 1005
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
Article

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
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
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
Review 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 (in preprint archive)

Inclusion of the ³P₀ model in PYTHIA 8

Albi Kerbizi, Leif Lönnblad
(2019)
Paper, not in proceeding

Modelling pp, pA and AA in Pythia8

Leif Lönnblad
(2019) EPJ Web of Conferences, 208 p.11003
Article

Dipoles in Impact Parameter Space and Rapidity

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

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 (in preprint archive)

The Angantyr model for heavy-ion collisions in Pythia8

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

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
Article

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
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
Article

A shoving model for collectivity in hadronic collisions

Christian Bierlich, Gösta Gustafson, Leif Lönnblad
(2016) arXiv.org, 1612
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) , 1605
Report

Generation of central exclusive final states

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

Effects of overlapping strings in pp collisions

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

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

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

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)
Paper, not in proceeding

Event Generators

Leif Lönnblad
(2014)
Paper, not in proceeding

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
Paper, not in proceeding

Rivet user manual

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

Fooling around with the Sudakov veto algorithm

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

Merging multi-leg NLO matrix elements with parton showers

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

Unitarising matrix element + parton shower merging

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

Exclusive final states in diffractive excitation

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad
(2012) Journal of High Energy Physics, 2012
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
Paper in conference proceeding

Matching tree-level matrix elements with interleaved showers

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

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
Article

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
Review article

A Parton Shower for High Energy Jets

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

Inclusive and exclusive observables from dipoles in high energy collisions

Christoffer Flensburg, Gösta Gustafson, Leif Lönnblad
(2011) Journal of High Energy Physics, 2011
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
Paper in conference proceeding

Multi-Jet Final States and Energy Flows

(2009)
Conference proceeding (editor)

ThePEG Toolkit for High Energy Physics Event Generation

Leif Lönnblad
(2009) [Host publication title missing] , p.733-736
Paper in conference proceeding

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
Paper in conference proceeding

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
Article

Leif Lönnblad - Professor i teoretisk fysik

Leif Lönnblad
(2008)
Miscellaneous

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
Paper in conference proceeding

Extending CKKW-merging to One-Loop Matrix Elements

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

Merging parton showers and matrix elements -- back to basics

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

Diffractive and elastic scattering in the dipole model

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

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
Article

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

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

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
Article

ThePEG, Herwig plus plus and Ariadne

Leif Lönnblad
(2007) Deep Inelastic Scattering , p.503-506
Paper in conference proceeding

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
Article

THEPEG, HERWIG++ and ARIADNE

Leif Lönnblad
(2007) Deep Inelastic Scattering , p.503-506
Paper in conference proceeding

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
Paper in conference proceeding

Diffractive Excitation in DIS and pp Collisions

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

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)
Miscellaneous

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
Paper in conference proceeding

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
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
Paper in conference proceeding

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
Review article

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
Paper in conference proceeding

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
Paper in conference proceeding

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
Paper in conference proceeding

Monte Carlo generators

L. Lonnblad
(2005) Acta Phys. Polon. Supp., 36 p.401-408
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
Paper in conference proceeding

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
Article

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

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

Ariadne at HERA and at the LHC

Leif Lönnblad
(2005) CERN Reports, CERN-2005-014 p.592-595
Paper in conference proceeding

Forward jets and multiple interactions

Leif Lönnblad, J Turnau
(2005) CERN Reports, CERN-2005-014 p.218-220
Paper in conference proceeding

THEPEG: Toolkit for High Energy Physics Event Generation

Leif Lönnblad
(2005) CERN Reports, CERN-2005-014 p.582-584
Paper in conference proceeding

QCD-supression by black hole production at the LHC

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

CEDAR

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

Energy conservation and saturation in small-x evolution

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

W+jets matrix elements and the dipole cascade

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

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

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

Unintegrated gluon densities in the LDC model

Leif Lönnblad
(2004) [Host publication title missing], I p.344-347
Paper in conference proceeding

ThePEG, Pythia7 and Ariadne

Leif Lönnblad
(2004) [Host publication title missing], II p.668-671
Paper in conference proceeding

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
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
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
Article

PYTHIA 6.3 Physics and Manual

Torbjörn Sjöstrand, Leif Lönnblad, Stephen Mrenna, Peter Skands
(2003) hep-ph/0308153, LU TP 03-38
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
Paper, not in proceeding

Modeling diffractive final states

Leif Lönnblad
(2002) Acta Physica Polonica B, 33 p.3231-3236
Paper in conference proceeding

Hadronic final state predictions from CCFM generators

Leif Lönnblad, Hannes Jung
(2002) The Science and Culture Series , p.467-470
Paper in conference proceeding

The QCD / SM working group: Summary report

Walter Giele, Leif Lönnblad, Torbjörn Sjöstrand
(2002) Workshop On Physics At TeV Colliders , p.275-426
Paper in conference proceeding

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

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

Combining matrix elements and the dipole cascade model

Leif Lönnblad
(2002) Acta Physica Polonica B, 33 p.3171-3176
Paper in conference proceeding

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
Paper in conference proceeding

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

Leif Lönnblad
(2002) Journal of High Energy Physics
Article

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
Review article

Multi-hadron final states

Leif Lönnblad, J Repond, M Zielinski
(2002) Acta Physica Polonica B, 33 p.3329-3347
Paper in conference proceeding

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
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
Paper in conference proceeding

Small x physics and forward jet production at THERA

Hannes Jung, Leif Lönnblad
(2001) ArXiv e-prints
Paper in conference proceeding

Generic user process interface for event generators

E. Boos, M. Dobbs, Walter Giele, I. Hinchliffe, J. Huston, et al.
(2001) Physics at TeV colliders. Proceedings, Euro Summer School, Les Houches, France, May 21-June 1, 2001
Paper in conference proceeding

PYTHIA 6.2: Physics and manual

Torbjörn Sjöstrand, Leif Lönnblad, Stephen Mrenna
(2001)
Report

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

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

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
Article

Reports of the Working Groups on Precision Calculations for LEP2 Physics: Proceedings. Report of the QCD working group

A. Ballestrero, Leif Lönnblad, Torbjörn Sjöstrand, B.R. Webber
(2000) In *Geneva 1999/2000, Reports of the working groups on precision calculation for LEP2 physics* 137-218
Paper in conference proceeding

Hard color singlet exchange at the Tevatron

B. E. Cox, Jeffrey R. Forshaw, Leif Lönnblad
(2000) Deep inelastic scattering. Proceedings, 8th International Workshop, DIS 2000, Liverpool, UK, April 25-30, 2000 , p.577-579
Paper in conference proceeding

Monte Carlo generators and the CCFM equation

Hannes Jung, Leif Lönnblad
(2000) , p.297-300
Paper, not in proceeding

What is the experimental evidence for the BFKL pomeron?

B. E. Cox, Jeffrey R. Forshaw, Leif Lönnblad
(2000) From e^+ e^- to Heavy Ion Collisions: Proceedings of the 30th International Symposium on Multiparticle Dynamics (ISMD 2000), Tihany, Hungary, October 9-15, 2000 , p.86-92
Paper in conference proceeding

Some comments on the current status of event generators for small-x

H. Jung, Leif Lönnblad
(2000) Journal of Physics G: Nuclear and Particle Physics, 26 p.707-711
Article

Outstanding problems in the phenomenology of hard diffractive scattering

B. E. Cox, Konstantin A. Goulianos, L. Lonnblad, J. J. Whitmore
(2000) Journal of Physics G: Nuclear and Particle Physics, 26 p.667-671
Article

Is BFKL ruled out by the Tevatron gaps between jets data?

B. E. Cox, Jeffrey R. Forshaw, L. Lonnblad
(1999) QCD and weak boson physics in Run II. Proceedings, Batavia, USA, March 4-6, June 3-4, November 4-6, 1999
Paper in conference proceeding

The Color dipole model and the ARIADNE program at high Q**2

Leif Lonnblad
(1999) Monte Carlo generators for HERA physics. Proceedings, Workshop, Hamburg, Germany, 1998-1999 , p.47-50
Paper in conference proceeding

Summary of activities in the working group on QCD cascades of the HERA Monte Carlo workshop

Nick Brook, Leif Lonnblad
(1999) Monte Carlo generators for HERA physics. Proceedings, Workshop, Hamburg, Germany, 1998-1999 , p.3-9
Paper in conference proceeding

LDCMC version1.0

H Kharraziha, Leif Lönnblad
(1999) Computer Physics Communications, 123 p.153-163
Article

Development strategies for PYTHIA version 7

Leif Lonnblad
(1999) Computer Physics Communications, 118 p.213-228
Article

The linked dipole chain Monte Carlo

Hamid Kharraziha, Leif Lönnblad
(1998) Journal of High Energy Physics, 3
Article

Some comments on event generators for deeply inelastic e gamma scattering

L. Lonnblad
(1998) Photon interactions and the photon structure. Proceedings, Workshop, Lund, Sweden, September 10-13, 1998 , p.197-201
Paper in conference proceeding

Final-state properties in the LDC Monte Carlo

L. Lonnblad
(1998) Proceedings of the 6th International Workshop on Deep Inelastic Scattering and QCD (DIS 98): Brussels, Belgium, April 4-8, 1998 , p.548-552
Paper in conference proceeding

Modeling Bose-Einstein correlations at LEP-2

Leif Lönnblad, Torbjörn Sjöstrand
(1998) European Physical Journal C, 2 p.165-180
Article

New and old jet clustering algorithms for electron-positron events

Stefano Moretti, Leif Lönnblad, Torbjörn Sjöstrand
(1998) Journal of High Energy Physics, 1998
Article

Generating heavy quarkonia in a perturbative QCD cascade

Per Ernstrom, Leif Lonnblad
(1997) Zeitschrift für Physik C Particles and Fields, 75 p.51-56
Article

Evolution effects in Z0 fragmentation into charmonium

P. Ernström, L. Lonnblad, M. Vänttinen
(1997) Zeitschrift für Physik C Particles and Fields, 76 p.515-521
Article

Tuning MC models to fit DIS e gamma scattering events

J. A. Lauber, L. Lonnblad, M. H. Seymour
(1997) arXiv.org
Article

The LDC event generator

G. Gustafson, H. Kharraziha, L. Lonnblad
(1996) Future physics at HERA. Proceedings, Workshop, Hamburg, Germany, September 25, 1995-May 31, 1996. Vol. 1, 2 , p.620-624
Paper in conference proceeding

Small x effects in W + jets production at the Tevatron

Leif Lonnblad
(1996) Nuclear Physics B, 458 p.215-228
Article

Reconnecting colored dipoles

Leif Lonnblad
(1996) Zeitschrift für Physik C Particles and Fields, 70 p.107-113
Article

Color reconnections and rapidity gaps

Leif Lonnblad
(1996) Measurement Science & Technology, 22 p.947-949
Article

Gamma gamma physics

P. Aurenche, Leif Lönnblad, Torbjörn Sjöstrand
(1996) 2nd CERN Workshop on LEP2 Physics Geneva, Switzerland, June 15-16, 1995 , p.291-348
Paper in conference proceeding

Determination of the mass of the $W$ boson

Z. Kunszt, Leif Lönnblad, Torbjörn Sjöstrand
(1996) 2nd CERN Workshop on LEP2 Physics Geneva, Switzerland, June 15-16, 1995 , p.141-205
Paper in conference proceeding

Jets and high E(T) phenomena

Martin Erdmann, Dirk Graudenz, Leif Lonnblad, Katsuo Tokushuku
(1996) Future physics at HERA. Proceedings, Workshop, Hamburg, Germany, September 25, 1995-May 31, 1996. Vol. 1, 2 , p.500-508
Paper in conference proceeding

Rapidity gaps and other final state properties in the color dipole model for deep inelastic scattering

Leif Lonnblad
(1995) Zeitschrift für Physik C Particles and Fields, 65 p.285-291
Article

Bose-Einstein effects and W mass determinations

Leif Lönnblad, Torbjörn Sjöstrand
(1995) Physics Letters B, 351 p.293-301
Article

gamma gamma event generators

Leif Lönnblad, Torbjörn Sjöstrand
(1995) 2nd CERN Workshop on LEP2 Physics Geneva, Switzerland, June 15-16, 1995 , p.187-228
Paper in conference proceeding

The Physics case for a forward detector upgrade

H. Abramowicz, Leif Lönnblad
(1995) Future physics at HERA. Proceedings, Workshop, Hamburg, Germany, September 25, 1995-May 31, 1996. Vol. 1, 2
Paper in conference proceeding

HZTOOL: A package for Monte Carlo-data comparison at HERA (version 1.0)

J. Bromley, N. Brook, A. Bunyatyan, T. Carli, Guenter Grindhammer, et al.
(1995) Future physics at HERA. Proceedings, Workshop, Hamburg, Germany, September 25, 1995-May 31, 1996. Vol. 1, 2
Paper in conference proceeding

Photon radiation in the dipole model and in the Ariadne program

L. Lonnblad
(1995) Photon '95. Proceedings, 10th International Workshop on Gamma Gamma Collisions and Related Processes, Sheffield, UK, April 8-13, 1995 , p.443-447
Paper in conference proceeding

CLHEP: A project for designing a C++ class library for high-energy physics

Leif Lonnblad
(1994) Computer Physics Communications, 84 p.307-316
Article

JETNET 3.0-A versatile artificial neural network package

Carsten Peterson, Thorsteinn Rögnvaldsson, Leif Lönnblad
(1994) Computer Physics Communications, 81 p.185-220
Article

ARCLUS: A New jet clustering algorithm inspired by the color dipole model

L. Lonnblad
(1993) Zeitschrift für Physik C Particles and Fields, 58 p.471-478
Article

Status of MC++ Event Generator Toolkit

L. Lonnblad
(1992) 6th International Conference on Computing in High-Energy and Nuclear Physics (CHEP 1992) Annecy, France, Sept 21-25, 1992 , p.531-534
Paper in conference proceeding

Mass reconstruction with a neural network

L. Lönnblad, C. Peterson, T. Rögnvaldsson
(1992) Physics Letters B, 278 p.181-186
Article

QCD cascades in deep inelastic scattering

N. Brook, G. Ingelman, L. Lonnblad
(1992) Workshop on Physics at HERA Hamburg, Germany, October 29-30, 1991 , p.0275-284
Paper in conference proceeding

ARIADNE version 4: A Program for simulation of QCD cascades implementing the color dipole model

Leif Lonnblad
(1992) Computer Physics Communications, 71 p.15-31
Article

Renormalization scales in electroweak physics: and Photon radiation in the dipole model and in the Ariadne program

Bernd A. Kniehl, Leif Lonnblad
(1992) Workshop on Photon Radiation from Quarks Annecy, France, December 2-3, 1991 , p.109-112
Paper in conference proceeding

The MC++ event generator toolkit: Version 0

Leif Lonnblad, Anders Nilsson
(1992) Computer Physics Communications, 71 p.1-14
Article

Heretical structure functions

Bo Andersson, Leif Lonnblad
(1992) Nuclear Physics B - Proceedings Supplements, 29 p.36-43
Article

A String dynamical description of gluon and ocean quark structure functions

Bo Andersson, Leif Lonnblad
(1992) Physics Letters B, 277 p.359-365
Article

Monte Carlo event generation for future super colliders

L. Lonnblad
(1992) Ettore Majorana International Science Series (EMISS), 60 p.253-259
Book chapter

Pattern recognition in high energy physics with artificial neural networks - JETNET 2.0

Leif Lönnblad, Carsten Peterson, Thorsteinn Rögnvalsson
(1992) Computer Physics Communications, 70 p.167-182
Article

The Color dipole cascade model and the Ariadne program

Leif Lonnblad
(1991) MC 91: Detector and event simulation in high-energy physics. Proceedings, Workshop, Amsterdam, Netherlands, April 8-12, 1991 , p.0527-538
Paper in conference proceeding

Particle production and decays in an object oriented formulation

Richard Blankenbecler, Leif Lonnblad
(1991) Part. World, 2
Article

Report of the heavy flavors working group

R. Barlow, Olof Bärring, Susan Cartwright, Paul Dauncey, Gunnar Ingelman, et al.
(1991) Journal of Physics G: Nuclear and Particle Physics, 17 p.1605-1623
Article

Self-organizing networks for extracting jet features

Leif Lönnblad, Carsten Peterson, Hong Pi, Thorsteinn Rögnvaldsson
(1991) Computer Physics Communications, 67 p.193-209
Article

Using neural networks to identify jets

Leif Lönnblad, Carsten Peterson, Thorsteinn Rögnvaldsson
(1991) Nuclear Physics, Section B, 349 p.675-702
Article

Finding Gluon Jets With a Neural Trigger

Leif Lonnblad, Carsten Peterson, Thorsteinn Rognvaldsson
(1990) Physical Review Letters, 65 p.1321-1324
Article

Using neural networks to identify jets in hadron hadron collisions

Pushpalatha Bhat, Leif Lonnblad, Karlheinz Meier, Katsuhito Sugano
(1990) 1990 DPF Summer Study on High-energy Physics: Research Directions for the Decade (Snowmass 90) Snowmass, Colorado, June 25-July 13, 1990 , p.0168-173
Paper in conference proceeding

Leif Lönnblad

Research

Teaching

Publications