Terascale Monte Carlo School 2025

24 Nov 2025, 13:00 → 28 Nov 2025, 14:30 Europe/Berlin

Building 5, Hörsaal (main lecture hall) (DESY Hamburg)

The Terascale alliance Monte Carlo school (Nov 24-28) at DESY Hamburg is designed for master/PhD students and young postdocs.

The tentative programme comprises lectures and a tutorial:
Lectures:
- Introduction (Hard scattering, matrix element, Parton showers, Sudakov form factor, underlying event (QCD radiation and MPI) and hadronization, weighting, integration, phase space, random numbers, veto,...) - Torbjörn Sjöstrand
- NLO and higher-order calculations - Rene Poncelet
- Parton shower matching/merging - Tomas Jezo
- Parton shower accuracy - Daniel Reichelt
- Resummation - Andrea Banfi
- Handling negative weights - Andreas Maier
- Parton distributioun functions - Katerina Lipka

During the hands-on tutorial you will learn how Monte Carlo methods can be applied.

The school fee covering breaks and one workshop dinner is 100 Euros.

Organizing Committee:
I. Henning, A. Hinzmann, J. Katzy, I. Melzer-Pellmann, Z. Nagy

2025-11-MC-School-Poster.pdf

group-picture-mc2025.jpg

Monday 24 November

13:30 → 14:00 Registration

14:00 → 14:10 Welcome

2025_MC.pdf

14:10 → 15:40 Introduction I

Speaker: Torbjörn Sjöstrand (Lund University)

tsdesy25a.pdf

15:40 → 16:00 Coffee break

16:00 → 17:30 Introduction II

Speaker: Torbjörn Sjöstrand (Lund University)

tsdesy25b.pdf

17:30 → 18:00 Computing set-up

Please bring your laptop!

For the Pythia tutorials:
* Tutorials based on docker images. Suggest to install docker in advance: https://docs.docker.com/install
* to avoid having to download the docker image all at the same time it would be a good idea to download the image in advance with: "docker pull hepstore/rivet-pythia" (where on Linux people will most likely need a "sudo" in front for this to work)

For the Sherpa tutorials:
* Tutorials based on docker images. Suggest to install docker in advance: https://docs.docker.com/install
* to avoid having to download the docker image all at the same time it would be a good idea to download the image in advance with:
docker pull hepstore/rivet-sherpa:3.1.8
docker container run -it -v $PWD:$PWD -w $PWD hepstore/rivet-sherpa:3.1.8 /bin/bash
Sherpa --version
* If you'd like to work with a local Sherpa installation instead of docker, it is useful to install rivet suit from rivet-bootstrap in advance: https://gitlab.com/hepcedar/rivet/-/blob/release-3-1-x/doc/tutorials/installation.md#installation-1

For the Herwig tutorials:
* Tutorials based on docker images. Suggest to install docker in advance: https://docs.docker.com/install
* to avoid having to download the docker image all at the same time it would be a good idea to download the image in advance with: "docker pull herwigcollaboration/herwig-7.3:7.3.0" (where on Linux people will most likely need a "sudo" in front for this to work)

If you need any additional support (via DESY computing access), contact us.

As fallback solution via ssh from laptop, we offer National Analysis Facility (NAF) guest accounts. Ask Andreas Hinzmann for account and password details. With this account you can use worker nodes with an installation at DESY via:
ssh school??@naf-school.desy.de

Tuesday 25 November

09:00 → 10:30 NLO & NNLO fixed order

Speaker: Rene Poncelet

NLO-lecture-poncelet.pdf

10:30 → 10:50 Coffee break

10:50 → 11:35 NLO & NNLO fixed order

Speaker: Rene Poncelet

11:35 → 13:05 PDF

Speaker: Katerina Lipka (DESY and University of Wuppertal)

MCSchool25_PDFs-3.pdf

13:05 → 14:00 Lunch break

14:00 → 15:30 Pythia MC Tutorial

Speaker: Joni Laulainen (University of Jyväskylä)

PythiaTutorial_JL.pdf

15:30 → 15:50 Coffee break

15:50 → 18:00 Pythia MC Tutorial

Speaker: Joni Laulainen (University of Jyväskylä)

Wednesday 26 November

09:00 → 10:30 Introduction III

Speaker: Torbjörn Sjöstrand (Lund University)

tsdesy25c.pdf

10:30 → 11:00 Coffee break + School Foto

11:00 → 12:30 Resummation

Speaker: Andrea Banfi

document-1.pdf

12:30 → 12:45 Q&A

13:00 → 14:00 Lunch break

14:00 → 15:30 Sherpa MC Tutorial

Speaker: Leon Stöcker (Uni Göttingen)

RunTTbar.dat

RunW.dat

sherpa.pdf

Tutorial git

15:30 → 15:50 Coffee break

15:50 → 18:00 Sherpa MC Tutorial

Speaker: Leon Stöcker (Uni Göttingen)

19:00 → 21:00 School dinner (Hoppe's Restaurant)

Directions with transport:
https://www.google.com/maps/dir/DESY,+Notkestra%C3%9Fe,+Altona/%C3%96velg%C3%B6nne+6,+22605+Hamburg/@53.5591578,9.8863625,4643m/am=t/data=!3m1!1e3!4m18!4m17!1m5!1m1!1s0x47b18432319c54af:0x3952ed73e492578f!2m2!1d9.880975!2d53.573032!1m5!1m1!1s0x47b1859e678dcde7:0x5b36d4c4baaf7b0d!2m2!1d9.9132942!2d53.5447366!2m3!6e0!7e2!8j1762538400!3e3?entry=ttu&g_ep=EgoyMDI1MTEwNC4xIKXMDSoASAFQAw%3D%3D

Thursday 27 November

09:00 → 09:45 Resummation

Speaker: Andrea Banfi

document-2.pdf

09:45 → 10:30 NLL shower accuracy

Speaker: Daniel Reichelt (Durham University, IPPP)

10:30 → 11:00 coffee break

11:00 → 11:45 NLL shower accuracy

Speaker: Daniel Reichelt (Durham University, IPPP)

11:45 → 12:30 Matching & merging

Speaker: Tomas Jezo (University of Münster)

12:30 → 13:00 Q&A

13:00 → 14:00 Lunch break

14:00 → 15:30 Herwig MC Tutorial

Speaker: Siddharth Sule (The University of Manchester (UK))

Herwig_Tutorial_Intro.pdf

tutorial-backup.pdf

Tutorial Link

15:30 → 15:50 Coffee break

15:50 → 18:00 Herwig MC Tutorial

Speaker: Siddharth Sule (The University of Manchester (UK))

18:00 → 19:30 HERA-West visit

Leaving in front of SR4 at 18:00.

Friday 28 November

09:00 → 10:30 Matching & merging

Speaker: Tomas Jezo (University of Münster)

10:30 → 11:00 Coffee break

11:00 → 12:30 Negative weights

Speaker: Andreas Martin Maier (DESY)