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
- 09:00 → 09:15
  
  Introduction 15m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  Intro25.pdf
- 09:15 → 10:30
  Updates from Experiments 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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  - 09:15
    
    ALICE (remote via Zoom) 15m
    
    Speaker: Antonin Maire (IPHC - Strasbourg (CNRS-In2p3/Unistra))
    
    Conf-2025-10-08-LPCC-MC-ALICEactivities.pdf
  - 09:30
    
    ATLAS 15m
    
    Speaker: Ana Rosario Cueto Gomez (Universidad Autonoma de Madrid (ES))
    
    ATLAS_LHCMCWG.pdf
  - 09:45
    
    CMS (remote via Zoom) 15m
    
    Speaker: Si Hyun Jeon (Boston University (US))
    
    cms_lhcmcwg_2.pdf
  - 10:00
    
    LHCb (remote via Zoom) 15m
    
    Speaker: Tom Hadavizadeh (Monash University (AU))
    
    2025_10_08_MCWG_LHCb_update.pdf
- 10:30 → 11:00
  
  Coffee break 30m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- 11:00 → 12:30
  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))
  - 11:00
    
    Herwig updates 15m
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
  - 11:15
    
    Pythia news 15m
    
    Speaker: Dr Ilkka Helenius (University of Jyväskylä)
    
    IH-LHC-MCWG-2025-pythia.pdf
  - 11:30
    
    Updates from Sherpa 15m
    
    Speaker: Daniel Reichelt (CERN)
    
    MCWG_2025_Sherpa_DReichelt.pdf
  - 11:45
    
    The future of MadGraph 15m
    
    Speaker: Theo Heimel (UCLouvain)
    
    madgraph7.pdf
  - 12:00
    
    Rivet updates 15m
    
    Speaker: Christian Gutschow (UCL (UK))
    
    cg_lhc_mcwg_rivet.pdf
  - 12:15
    
    Contur news 15m
    
    Speaker: Jonathan Butterworth (UCL)
    
    contur_lpcc.pptx
- 12:30 → 14:00
  
  Lunch break 1h 30m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- 14:00 → 15:40
  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))
  - 14:00
    
    Intoduction and Pythia plans 10m
    
    Speaker: Leif Lönnblad (Lund University (SE))
    
    TuningIntro25.pdf
  - 14:10
    
    Tuning the rope model to ALICE data (via Zoom) 15m
    
    Speaker: Lorenzo Bernardinis (Universita e INFN Trieste (IT))
    
    LB-Tuning_Rope_hadronization-final.pdf
  - 14:25
    
    Non-perturbative modelling and tuning in Sherpa 15m
    
    Speaker: Frank Martin Krauss
    
    CERN25_MCWG_Tune.pdf
  - 14:40
    
    Thoughts on cutoffs and tuning 15m
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
  - 14:55
    
    ATLAS tuning 15m
    
    Speaker: Baris Tuncay (University of Oxford (GB))
    
    BarisTuncay_LHCMCWG_PlenaryMeeting_Oct2025.pdf
  - 15:10
    
    CMS tuning 15m
    
    Speaker: Kyle Cormier (CERN)
    
    CMS_Tuning_LHCMCWG2025-3.pdf
  - 15:25
    
    Discussion about possible tuning sub-group 15m
- 15:40 → 16:00
  
  Coffee break 20m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- 16:00 → 18:00
  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)
  - 16:00
    
    Status update from PanScales 20m
    
    Speaker: Melissa Corona van Beekveld (Nikhef National institute for subatomic physics (NL))
    
    mcwg_oct2025.pdf
  - 16:25
    
    Status update from Herwig 20m
    
    Speaker: Mike Seymour (The University of Manchester (GB))
    
    Herwig_NLL_Shower___MCWG_2025.pdf
  - 16:50
    
    Status update from Alaric 20m
    
    Speaker: Daniel Reichelt (CERN)
    
    MCWG_2025_Alaric_DReichelt.pdf
  - 17:15
    
    Status update from Apollo 20m
    
    Speaker: Christian Preuss (University of Goettingen)
    
    mcwg-apollo-ctp.pdf
  - 17:40
    
    Status update from CVolver 20m
    
    Speaker: Simon Platzer (University of Graz (AT))
    
    slides-small.pdf
- 18:00 → 19:30
  
  Reception 1h 30m 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
- 09:00 → 09:45
  
  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
- 09:45 → 11:00
  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)
  - 09:45
    
    Madgraph plugin for hardware acceleration 25m
    
    Speaker: Zenny Wettersten (CERN)
    
    Zenny_Wetterstan_CUDACPP_LHC_MC_WG.pdf
  - 10:10
    
    Pepper parton level event generation 25m
    
    Speaker: Enrico Bothmann (CERN)
    
    bothmann-pepper.pdf
  - 10:35
    
    GAPS, GPU-Amplified Parton Shower 25m
    
    Speaker: Mike Seymour (The University of Manchester (GB))
    
    GAPS___MCWG_2025.pdf
- 11:00 → 11:30
  
  Coffee break 30m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- 11:30 → 12:45
  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
  - 11:30
    
    MC community vision & asks 15m
    
    Speaker: Frank Martin Krauss
    
    CERN_LHCWG_MCvision_asks.pdf
  - 11:45
    
    Community MC tools: sustainability lessons and challenges 15m
    
    Speaker: Andy Buckley (University of Glasgow (GB))
    
    2025-10 LHC MC sustainability.pdf
  - 12:00
    
    Experiments’ perspective (common presentation) 15m
    
    Speakers: Gloria Corti (CERN), John Derek Chapman (University of Cambridge (GB))
    
    MC Toolchain Sustainabiility.pdf
  - 12:15
    
    HSF: Vision and Role in MC Toolchain Sustainability 15m
    
    Speaker: Saptaparna Bhattacharya (Southern Methodist University (US))
    
    HSFTalk.pdf
  - 12:30
    
    EP-SFT: Mandate and Role 15m
    
    Speaker: Gerardo Ganis (CERN)
    
    SFT-LHCMCPM-Oct2025
- 12:45 → 14:00
  
  Lunch break 1h 15m 4/3-006 - TH Conference Room
  
  4/3-006 - TH Conference Room
  
  CERN
  
  110
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- 14:00 → 15:45
  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)
  - 14:00
    
    Machine learning applications to negative-weight reduction 25m
    
    Speakers: Andrea Valassi (CERN), Stefano Frixione (INFN)
    
    20251009-NEGWGT-FVZ-AV-v005.pdf
    
    negwgt.pdf
  - 14:25
    
    Negative weight suppression: Quantifying improvements and distortions 25m
    
    Speaker: Jeppe Andersen (IPPP, University of Durham)
    
    Andersen.pdf
  - 14:50
    
    Negative weight elimination: ESME 25m
    
    Speaker: Dr Alexander Karlberg (CERN)
    
    Karlberg-LHCMCWG.pdf
  - 15:15
    
    Neural Refinement of Sample Weights 25m
    
    Speaker: Dennis Noll (Stanford University)
    
    251009_noll-weight_refiner_anim.pdf
    
    251009_noll-weight_refiner.pdf
- 15:45 → 16:05
  
  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