Torbjörn Sjöstrand - Talks

This page contains pdf files for some talks of recent years. A few are not complete, having been mixed in with slides from earlier days, when talks were produced by hand. Further, some of the earlier, where the tex files were no longer available, have suffered from the ps to pdf conversion.

The Role of Event Generators in the exploration of QCD
DESY Particle and Astroparticle Physics Colloquium (DESY, Hamburg, 20 February 2024)

Introduction to Event Generators
lectures presented at the Terascale Monte Carlo School 2024 (DESY, Hamburg, 19 - 23 February 2024)
Lecture 1
Lecture 2
Lecture 3
Worksheet for tutorial

PYTHIA 8 Overview
Presented at the Workshop on the tuning of hadronic interaction models (Wuppertal, Germany, 22 - 25 January 2024)

The Role of Event Generators (in the exploration of QCD)
presented at 50 years of Quantum Chromodynamics (UCLA, Los Angeles, USA, 11 - 15 September 2023)

Charm and bottom production
discussion starter at the Holmganga CLASH workshop (Helsingborg, Sweden, 26 - 30 June 2023)

Intro to Particle Physics and Event Generators
lectures presented at the SMARTHEP School on Collider Physics and Machine Learning (Geneva University, Switzerland, 10 - 13 January 2023)
Lecture 1
Lecture 2
Lecture 3
Lecture 4

Forward Charm
presented at a FPF study group meeting, 5 December 2022

Event Generator Physics
lectures and an exercise presented at the DKPI Summer School 2022 (Neusiedl am See, Austria, 12 - 16 September 2022)
Lecture 1
Lecture 2
Lecture 3
Lecture 4
Lecture 5
preparations for the exercise, before the school
instructions for the exercise, during the school
mainZp.cc skeleton program to run in the exercise

PYTHIA 8 for CORSIKA 8
presented at the CORSIKA 8 Air-Shower Simulation and Development Workshop, Heidelberg, 12 - 15 July 2022

Hidden Valleys in PYTHIA
presented at the Semivisible Jets Workshop, Zurich, 5 - 7 July 2022

Soft QCD theory
presentation at the Tenth Annual Large Hadron Collider Physics Conference (LHCP 2022), Taipei, 16 - 20 May 2022

Universums dolda dalar
popular-science presentation for Astronomiska Sällskapet Tycho Brahe, 29 September 2021

Nonperturbative models in PYTHIA
presented at the workshop on Taming the accuracy of event generators, 23 - 27 August 2021

The PYTHIA event generator
prize presentation at the EPS-HEP Conference 2021, 26 - 30 July 2021

Past, Present and Future of the PYTHIA Event Generator
physics colloquium at the Department of Physics, University of Jyväskylä, 16 April 2021

Forward Physics in PYTHIA 8
presented at the Forward Physics Facility Kickoff Meeting, 9 - 10 November 2020

Open Issues in Soft Physics
presented at the virtual Snowmass EF05 Mini-workshop on Non-Perturbative Uncertainties, 3 - 4 August 2020

Hidden Valleys in PYTHIA
presented at a Dark Matter meeting, Lund, 19 - 20 November 2019

PYTHIA and other MC generators for pp physics
presented at the COST Workshop on Interplay of hard and soft QCD probes for collectivity in heavy-ion collisions, Lund, 25 February - 1 March 2019

The PYTHIA 8 Event Generator
presented at the LHC meets Cosmic Rays school (ISAPP 2018), CERN, 28 October - 2 November 2018

Origins of and PYTHIA experience with Colour Reconnection
presented at a satellite meeting on Colour Reconnection, to PSR18, the Ninth International Workshop on Parton Showers and Resummation, Lund, 7 June 2018

Collective Effects: the viewpoint of HEP MC codes
presented at Quark Matter 2018, Venice, Italy, 13-19 May 2018

PDFs in an event generator
presented at the CERN theory institute on LHC and the Standard Model: Physics and Tools, CERN, 16 June 2017

The Lund Model and some extensions
presented at the workshop on Collective effects in small collisions systems, CERN, 15 June 2017

Status of PYTHIA 8
presentation at the ATLAS-CMS Monte Carlo Generators Workshop, CERN, 2-5 May 2017

Excellence in grant applications
presentation at MCnet grant writing day, CERN, 22 November 2016

Colour Reconnections from LEP to Future Colliders
presentation at Parton Radiation and Fragmentation from LHC to FCC-ee workshop, CERN, 21 - 22 November 2016

Introduction to Event Generators
lectures presented at the CTEQ--MCnet School 2016, DESY, Hamburg, Germany
Lecture 1: 10 July 2016
Lecture 2: 10 July 2016
Lecture 3: 12 July 2016
Lecture 4: 12 July 2016

Status and Developments of Event Generators
presentation at the Fourth Annual Large Hadron Collider Physics Conference (LHCP 2016), Lund, 13 - 18 June 2016

Soft (& some hard) Physics at 100 TeV
discussion introduction at the MCnet meeting in Göttingen, 4-6 April 2016

QCD and BSM
seminar at Monash University, Melbourne, Australia, 10 February 2016

The Smallest Dices -- Simplicity and Complexity in the Particle World
Fredagsfåtöljen ("Friday armchair") popular science presentation, Faculty of Science, Lund, 6 November 2015

QCD and BSM
presentation at 39th John Hopkins Workshop, Theory Challenges in the LHC era, Gothenburg, 12 - 14 August 2015

Soft QCD (and PYTHIA)
presentation at ATLAS SM Workshop, Annecy, 4 February 2015

MPI in PYTHIA
presentation at MPI@LHC 2014, Krakow, 3 - 7 November 2014

Status and Future of PYTHIA
presentation at NBI-Lund meeting, Lund, 27 May 2014

Soft Physics at the LHC: Insights and Challenges
seminar in Vienna, 18 March 2014

Colour Reconnection and Its Effects on Precise Measurements at the LHC
International Symposium on Multiparticle Dynamics 2013, Chicago, 15 - 20 September 2013

Monte Carlo Generators and Soft QCD
at the 2013 CERN-Fermilab HCP Summer School, CERN, 28 August - 6 September 2013
Lecture 1: 2 September
Lecture 2: 2 September
Lecture 3: 3 September

Monte Carlo - lectures and tutorials
at TRISEP 2013 summer school, Vancouver, Canada, 1 - 12 July 2013
Lecture 1: 4 July 2013
Lecture 2: 5 July 2013
PYTHIA 8 Worksheet for tutorials
both lectures are recorded as video

Challenges for QCD Theory - some personal reflections
Nobel Symposium on LHC Results, Krusenberg, Uppsala, Sweden, 13 - 17 May 2013

Progress on the PYTHIA 8 event generator
seminar in Mainz, 23 January 2013

PYTHIA 8 and its tuning parameters
MC-LHCb mini workshop, Bucharest, Romania, 22 - 23 November 2012 (EVO presentation)

Inclusion of W/Z emission in showers
TH/LPCC Institute on SM at the LHC, CERN, 1 - 12 October 2012

Introduction to Monte Carlo Techniques in High Energy Physics
CERN summer student lectures
Lecture 1: 19 July 2012, also as video
Lecture 2: 20 July 2012, also as video

Some QCD Aspects of Physics Beyond the Standard Model
APS April Meeting, Atlanta, Georgia, 31 March - 3 April 2012

Status of the LHC and Anatomy of LHC Events
common seminar at the Department of Astronomy and Theoretical Physics, Lund, 14 March 2012

QCD for BSM in PYTHIA
2011 IPMU-YITP School and Workshop on Monte Carlo Tools for LHC, Kyoto, Japan, 5 - 10 September 2011

Modelling of minimum bias and underlying events
2011 IPMU-YITP School and Workshop on Monte Carlo Tools for LHC, Kyoto, Japan, 5 - 10 September 2011

Progress on Event Generation with PYTHIA 8
collider cross talk, CERN, 4 August 2011

Progress on Event Generation with PYTHIA 8
seminar at DESY, 1 March 2011

PYTHIA 8 Status
presented at the Workshop on Hadron-Hadron and Cosmic-Ray Interactions at multi-TeV Energies, Trento, Italy, 29 November - 3 December 2010

Some thoughts on the CMS ridge effect
presented at the Discussion on CMS ridge effect, CERN, 12 October 2010

Introduction to Monte Carlo Event Generators
lectures presented at the CTEQ--MCnet School 2010, Lauterbad, Germany
Lecture 1: 26 July 2010
Lecture 2: 26 July 2010
Lecture 3: 27 July 2010
Lecture 4: 27 July 2010
Lecture 5: 28 July 2010

PYTHIA 8 Status
presented at the MC4LHC readiness meeting, CERN, 29 March - 1 April 2010

QCD and Event Generators
presented at the CP3 - Origins Inauguration, SDU, Odense, Denmark, 24 November 2009, also as video

Lund Phenomenology - Introduction and Overview
presented at Partikeldagarna 2009, Lund, 1 - 2 October 2009

PYTHIA 8.130
presented at the LCG Generator Services monthly meeting, CERN, 23 September 2009

Monte Carlo Tools
lectures presented at the 65th Scottish Universities Summer School in Physics: LHC Physics, St Andrews, Scotland
Lecture 1: 17 August 2009
Lecture 2: 18 August 2009
Lecture 3: 19 August 2009

Old Ideas in Hadronization: The Lund String
presented at the workshop on "New Ideas in Hadronization", IPPP, Durham, United Kingdom, 15 - 17 April 2009

QCD at LHC in pp
presented at 3rd Nordic "LHC and Beyond" Workshop, Lund, 2 - 3 February 2009

Lund Phenomenology - Introduction and Overview
presented at Partikeldagarna 2008, Stockholm, 16 - 17 October 2008

Event Generators for LHC
lectures presented at the Joint Belgian Dutch German Graduate School, Texel, The Netherlands
Lectures 1 and 2: 22 September 2008
Lectures 3 and 4: 23 September 2008

Event-Generator Activities
presented at the Astronomy and Theoretical Physics Gathering, Lund, 19 August 2008

Minimum-Bias and Underlying-Event Physics
presented at the 2008 CTEQ - MCnet Summer School on QCD Phenomenology and Monte Carlo Event Generators, Debrecen, Hungary, 8 - 16 August 2008

Introduction to PYTHIA 8
presented at the Nordic Workshop on LHC and Beyond (jointly with the NORDITA Workshop on TeV Scale Physics and Dark Matter), Alba Nova, Stockholm, Sweden, 12 - 14 June 2008

PYTHIA 8 Status Report
presented at the HERA and the LHC workshop, CERN, 26 - 30 May 2008

Event Generators for LHC
lectures presented at LNF Sprimg School "Bruno Touschek", Entering the LHC Era, Frascati, Italy
Lecture 1: 14 May 2008
Lecture 2: 15 May 2008

Minimum-Bias and Underlying-Event Physics in PYTHIA
presented at the Monte Carlo School, DESY, 21 - 24 April 2008, also as video

PYTHIA 8.1 Introduction and Tutorial
presented at the Monte Carlo School, DESY, 21 - 24 April 2008, also as video

Event Generators for LHC
lectures presented at Syddansk Universitet, Odense, Denmark
Lecture 1: 27 March 2008
Lecture 2: 28 March 2008

Gösta and The Dipole
presented at the Symposium "Dipoles are Forever", Lund, 9 January 2008

Event Generators: Trends and Needs
presented at the Strategic Helmholtz Alliance "Physics at the Terascale" Kick-off Workshop, DESY, 3 - 5 December 2007

PYTHIA 8.1 Introduction and Tutorial
presented at the ATLAS Monte Carlo Generator meeting, 5 November 2007
presented at the LHCb Production and Decay Models working group meeting, 15 November 2007
presented during the ALICE Physics Working Group week, 11 December 2007
presented a the CMS Generator Tools meeting, 12 December 2007

The PYTHIA 8.1 Release
presented at the Generator Services monthly meeting, CERN, 24 October 2007

Monte Carlo Provocateur Intro: Programs and Problems
presented at the DESY miniworkshop on Multiple Interactions and Underlying Events, DESY, 18 - 19 May 2007

PYTHIA - News and Usage
presented at the CMS Monte Carlo tuning miniworkshop, CERN, 14 May 2007

PYTHIA - News in Recent Years
presented at the ATLAS Higgs Group meeting, CERN, 7 February 2007

PYTHIA 8 Status Report
presented at the MCnet open meeting, CERN, 10 January 2007

''User'' comments on NLO PDF's
presented at the ATLAS discussion meeting on NLO PDF's, CERN, 14 December 2006

New developments in PYTHIA 8
presented at the Generator Services monthly meeting, CERN, 22 November 2006

Theory of Hadronic Collisions
lectures presented at the First CERN-Fermilab Hadron Collider Physics Summer School, Fermilab
Lecture 1: 11 August 2006
Lecture 2: 12 August 2006
Lecture 3: 14 August 2006

Presentations at the MC4LHC-06 workshop, CERN, 17 - 26 July 2006:
Status and Plans for PYTHIA 8
Tuning Priorities for PYTHIA 8
Les Houches Accord - introduction to discussion
Towards a Les Houches Events file format?
Towards a Les Houches Events file format? (updated for summary)

Monte Carlo Generators
lectures presented at the 2006 European School of High-Energy Physics, Aronsborg, Sweden
Lecture 1: 26 June 2006
Lecture 2: 27 June 2006

Status and Plans for PYTHIA 8
presented at the CMS CPT week, CERN, 12 May 2006

The User-Autor Interaction: A PYTHIA Case Study
presented at the LCG Generator Services meeting, CERN, 9 May 2006

Monte Carlo Generators
lectures presented at the UK HEP Young Experimentalists and Theorists Institute YETI'06, IPPP, Durham, United Kingdom
Lecture 1: 27 March 2006
Lecture 2: 27 March 2006
Lecture 3: 28 March 2006
Lecture 4: 28 March 2006
Lecture 5: 29 March 2006

Monte Carlo Generators
lectures at the International Max Planck Research School, MPI, Munich, Germany
Lecture 1: 20 February 2006
Lecture 2: 21 February 2006

PYTHIA 8 - The First Release
presented at the Monte Carlo School, Dresden, Germany, 4 - 6 January 2006

PYTHIA 8 - The First Release
presented at the LCG Generator Services meeting, CERN, 28 July 2005

Status of PYTHIA 8
presented at the Applications Area meeting, CERN, 1 June 2005

The Les Houches Accord: Should/Could We Update It?
presented on the Workshop on Physics at TeV Colliders, Les Houches, 2 - 20 May 2005

New PDG Particle Codes, PYTHIA 6.3 Parton Showering, and PYTHIA 8 Progress Report
presented at the TeV4LHC Workshop, CERN, 28 - 30 April 2005

PYTHIA: Past, Present and Future
presented at the SFT group meeting, CERN, 15 April 2005

Monte Carlo Generators for the LHC
Academic Training Lectures, presented at CERN
Lecture 1: 4 April 2005, also as video
Lecture 2: 5 April 2005, also as video
Lecture 3: 6 April 2005, also as video
Lecture 4: 7 April 2005, also as video

New pT-ordered Showers and Interleaved Multiple Interactions
presented at an informal meeting, DESY, 21 February 2005

New pT-ordered Showers and Interleaved Multiple Interactions
presented at the ATLAS physics plenary meeting, CERN, 17 February 2005

The PYTHIA Event Generator
presented at the PYTHIA tutorial lectures, Fermilab, 7 December 2004

The Les Houches Accord
presented by Steve Mrenna at the PYTHIA tutorial lectures, Fermilab, 7 December 2004

Survey of interesting or useful switches and parameters
presented by Steve Mrenna at the PYTHIA tutorial lectures, Fermilab, 7 December 2004

Monte Carlos for LHC
presented at CMS generator workshop, CERN, 3 November 2004

New pT-ordered showers and Interleaved Multiple Interactions
presented at the HERA and the LHC workshop, CERN, 11 - 13 October 2004

New pT-ordered showers
presented at the 9th Nordic LHC Workshop, Copenhagen, 16 - 17 June 2004

Top mass simulation uncertainties in PYTHIA
phone presentation for the CDF top group, 17 March 2004

New pT-ordered showers
presented at the Collider Physics Workshop, KITP, Santa Barbara, 12 January - 2 April 2004

Whither PYTHIA?
presented at the Collider Physics Workshop, KITP, Santa Barbara, 12 January - 2 April 2004

Multiple Interactions - An Introduction
presented at the Workshop on Monte Carlo tools for the LHC, CERN, 7 July - 1 August 2003 (incomplete, misses many older graphs)

Production and Hadronization of Heavy Quarks
presented at the Workshop on Monte Carlo tools for the LHC, CERN, 7 July - 1 August 2003

Monte Carlos for TeV Colliders
presented at the Workshop on Physics at TeV Colliders, Les Houches, 26 May - 6 June 2003

LHC Physics Event Generators
presented at the Nordic LHC Physics Workshop, Uppsala, 12 November 2002

Monte Carlos and NLO
presented at the H1 Collaboration meeting, Lund, 3 October 2002

Production and hadronization of heavy quarks
presented at IPPP Workshop on Multiparticle Production in QCD Jets, Durham, 14 December 2001

PYTHIA Status Report
presented at the ATLAS Physics Workshop, Lund, 12 - 16 September 2001

PYTHIA Status Report
presented at the Workshop on Physics at TeV Colliders, Les Houches, 21 May - 1 June 2001

Production and hadronization of heavy quarks
presented at the School on Relativistic Heavy Ion Physics & Hard Probes Collaboration Meeting, NORDITA, 16 May 2001

PYTHIA Status Report
presented at the Workshop on Monte Carlo Generator Physics for Run II at the Tevatron, Fermilab, 18 - 20 April 2001

Matching of ME with PS in PYTHIA
presented at the Workshop on Monte Carlo Generator Physics for Run II at the Tevatron, Fermilab, 18 - 20 April 2001

Event Generator Physics
presented in Heidelberg, 30 January 2001

QCD Radiation off Heavy Particles
presented at the Linear Collider Workshop 2000, Fermilab, 24 - 28 October 2000

Gamma-Gamma Interactions from Real to Virtual Photons
presented at the Linear Collider Workshop 2000, Fermilab, 24 - 28 October 2000

PYTHIA Status Report
presented at the Linear Collider Workshop 2000, Fermilab, 24 - 28 October 2000

Recent QCD Generator Developments
presented at the DELPHI week, Uppsala, 14 - 19 September 2000

Implementation of New Physics in PYTHIA
presented at the Nordic LHC Workshop, Lund, 16 - 18 March 2000

QCD Interconnection Effects
presented at the Workshop on the Development of Future Linear Electron-Positron Colliders, Lund, 23 - 26 September 1999

QCD Interconnection Effects
presented at the International Workshop on Linear Colliders, Sitges, 28 April - 5 May 1999

PYTHIA and HERWIG for linear collider physics
presented at the International Workshop on Linear Colliders, Sitges, 28 April - 5 May 1999

WW Interconnection Effects Well Above Threshold
presented at the ECFA/DESY Linear Collider workshop, Oxford, 20-23 March 1999

A PYTHIA Update
presented at the ECFA/DESY Linear Collider workshop, Oxford, 20 - 23 March 1999

Recent Progress in PYTHIA
presented at the QCD and Weak Boson Physics workshop, Fermilab, 4 - 6 March 1999