LHC Monte Carlo WG plenary meeting

Name: LHC Monte Carlo WG plenary meeting
Start: 2025-10-08T09:00:00+02:00
End: 2025-10-09T18:00:00+02:00
Location: CERN

8 Oct 2025, 09:00 → 9 Oct 2025, 18:00 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

110

Show room on map

Description

This is the first plenary and in-person meeting of the LHC MC Working Group. It will cover an overview of the ongoing progress by the experiments and the theoretical community, and report on the ongoing initiatives stimulated by the WG. More details on the format, contents and agenda to follow in due time.

The meeting will take place at CERN and also via Zoom (hybrid format).

To subscribe to the general WG mailing list, used to distribute announcements about WG meetings and available documents, go to
https://e-groups.cern.ch/e-groups/EgroupsSubscription.do?egroupName=lhc-mcwg

NB Of potential interest to participants: the meeting of PDF4LHC is scheduled for the previous days, Mon-Tue 6-7 October. Agenda to be posted in due time to https://indico.cern.ch/category/13648/

Also of potential interest to participants is the MCnet meeting on Friday the 10th with presentations of the work done by the students in the LPCC short-term studentship program. Agenda to be posted in due time to https://indico.cern.ch/event/1566194/

Support

lhc-mcwg-admin@cern.ch

Registration

LHC MC WG Registration

Participants

97 View full list

67303552546

Michelangelo Mangano

01726135

Join via phone

Wednesday 8 October
- Wed 8 Oct
- Thu 9 Oct
- 1
  
  Introduction 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Intro25.pdf
- Updates from Experiments 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  - 2
    
    ALICE (remote via Zoom)
    
    Speaker: Antonin Maire (IPHC - Strasbourg (CNRS-In2p3/Unistra))
    
    Conf-2025-10-08-LPCC-MC-ALICEactivities.pdf
  - 3
    
    ATLAS
    
    Speaker: Ana Rosario Cueto Gomez (Universidad Autonoma de Madrid (ES))
    
    ATLAS_LHCMCWG.pdf
  - 4
    
    CMS (remote via Zoom)
    
    Speaker: Si Hyun Jeon (Boston University (US))
    
    cms_lhcmcwg_2.pdf
  - 5
    
    LHCb (remote via Zoom)
    
    Speaker: Tom Hadavizadeh (Monash University (AU))
    
    2025_10_08_MCWG_LHCb_update.pdf
- 10:30
  
  Coffee break 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- Updates from event generators and related tools 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Leif Lönnblad (Lund University (SE))
  - 6
    
    Herwig updates
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
  - 7
    
    Pythia news
    
    Speaker: Dr Ilkka Helenius (University of Jyväskylä)
    
    IH-LHC-MCWG-2025-pythia.pdf
  - 8
    
    Updates from Sherpa
    
    Speaker: Daniel Reichelt (CERN)
    
    MCWG_2025_Sherpa_DReichelt.pdf
  - 9
    
    The future of MadGraph
    
    Speaker: Theo Heimel (UCLouvain)
    
    madgraph7.pdf
  - 10
    
    Rivet updates
    
    Speaker: Christian Gutschow (UCL (UK))
    
    cg_lhc_mcwg_rivet.pdf
  - 11
    
    Contur news
    
    Speaker: Jonathan Butterworth (UCL)
    
    contur_lpcc.pptx
- 12:30
  
  Lunch break 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- Tuning issues 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Leif Lönnblad (Lund University (SE))
  - 12
    
    Intoduction and Pythia plans
    
    Speaker: Leif Lönnblad (Lund University (SE))
    
    TuningIntro25.pdf
  - 13
    
    Tuning the rope model to ALICE data (via Zoom)
    
    Speaker: Lorenzo Bernardinis (Universita e INFN Trieste (IT))
    
    LB-Tuning_Rope_hadronization-final.pdf
  - 14
    
    Non-perturbative modelling and tuning in Sherpa
    
    Speaker: Frank Martin Krauss
    
    CERN25_MCWG_Tune.pdf
  - 15
    
    Thoughts on cutoffs and tuning
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
  - 16
    
    ATLAS tuning
    
    Speaker: Baris Tuncay (University of Oxford (GB))
    
    BarisTuncay_LHCMCWG_PlenaryMeeting_Oct2025.pdf
  - 17
    
    CMS tuning
    
    Speaker: Kyle Cormier (CERN)
    
    CMS_Tuning_LHCMCWG2025-3.pdf
  - 18
    
    Discussion about possible tuning sub-group
- 15:40
  
  Coffee break 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- Progress towards (N)NLL parton showers 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Pier Francesco Monni (CERN)
  - 19
    
    Status update from PanScales
    
    Speaker: Melissa Corona van Beekveld (Nikhef National institute for subatomic physics (NL))
    
    mcwg_oct2025.pdf
  - 20
    
    Status update from Herwig
    
    Speaker: Mike Seymour (The University of Manchester (GB))
    
    Herwig_NLL_Shower___MCWG_2025.pdf
  - 21
    
    Status update from Alaric
    
    Speaker: Daniel Reichelt (CERN)
    
    MCWG_2025_Alaric_DReichelt.pdf
  - 22
    
    Status update from Apollo
    
    Speaker: Christian Preuss (University of Goettingen)
    
    mcwg-apollo-ctp.pdf
  - 23
    
    Status update from CVolver
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
- 18:00
  
  Reception 61/1-201 - Pas perdus - Not a meeting room -
  
  61/1-201 - Pas perdus - Not a meeting room -
  
  CERN
  
  10
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Thursday 9 October
- Wed 8 Oct
- Thu 9 Oct
- Sharing of event samples between experiments 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Enrico Bothmann (CERN)
  
  bothmann-data-sharing-report.pdf
- Updates on code acceleration 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Stefan Roiser (CERN)
  - 24
    
    Madgraph plugin for hardware acceleration
    
    Speaker: Zenny Wettersten (CERN)
    
    Zenny_Wetterstan_CUDACPP_LHC_MC_WG.pdf
  - 25
    
    Pepper parton level event generation
    
    Speaker: Enrico Bothmann (CERN)
    
    bothmann-pepper.pdf
  - 26
    
    GAPS, GPU-Amplified Parton Shower
    
    Speaker: Mike Seymour (The University of Manchester (GB))
    
    GAPS___MCWG_2025.pdf
- 11:00
  
  Coffee break 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- Sustainability of the MC toolchain 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Dmitri Konstantinov (Chulalongkorn University (TH))
  
  MCWG_sustanability.pdf
  - 27
    
    MC community vision & asks
    
    Speaker: Frank Martin Krauss
    
    CERN_LHCWG_MCvision_asks.pdf
  - 28
    
    Community MC tools: sustainability lessons and challenges
    
    Speaker: Andy Buckley (University of Glasgow (GB))
    
    2025-10 LHC MC sustainability.pdf
  - 29
    
    Experiments’ perspective (common presentation)
    
    Speakers: Gloria Corti (CERN), John Derek Chapman (University of Cambridge (GB))
    
    MC Toolchain Sustainabiility.pdf
  - 30
    
    HSF: Vision and Role in MC Toolchain Sustainability
    
    Speaker: Saptaparna Bhattacharya (Southern Methodist University (US))
    
    HSFTalk.pdf
  - 31
    
    EP-SFT: Mandate and Role
    
    Speaker: Gerardo Ganis (CERN)
    
    SFT-LHCMCPM-Oct2025
- 12:45
  
  Lunch break 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- Negative weights, variation and biasing 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Convener: Michelangelo Mangano (CERN)
  - 32
    
    Machine learning applications to negative-weight reduction
    
    Speakers: Andrea Valassi (CERN), Stefano Frixione (INFN)
    
    20251009-NEGWGT-FVZ-AV-v005.pdf
    
    negwgt.pdf
  - 33
    
    Negative weight suppression: Quantifying improvements and distortions
    
    Speaker: Jeppe Andersen (IPPP, University of Durham)
    
    Andersen.pdf
  - 34
    
    Negative weight elimination: ESME
    
    Speaker: Dr Alexander Karlberg (CERN)
    
    Karlberg-LHCMCWG.pdf
  - 35
    
    Neural Refinement of Sample Weights
    
    Speaker: Dennis Noll (Stanford University)
    
    251009_noll-weight_refiner_anim.pdf
    
    251009_noll-weight_refiner.pdf
- Wrap-up and future plans 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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LHC Monte Carlo WG plenary meeting

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

61/1-201 - Pas perdus - Not a meeting room -

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN

4/3-006 - TH Conference Room

CERN