ECFA Higgs Factories: 2nd Topical Meeting on Generators

21 Jun 2023, 10:30 → 22 Jun 2023, 16:00 Europe/Zurich

Solvay (ULB)

Dirk Zerwas (Université Paris-Saclay (FR)), Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna)

Do not hesitate to contact us if you would like to make a presentation or if you would like to help with the work!

For information about the venue, travel and accomodations, please contact the local organisers: Barbara Clerbaux (barbara.clerbaux_at_ulb.be) or Fabio Maltoni (fabio.maltoni_at_uclouvain.be)

ECFA Higgs Factories study

Coming to Brussels 

By train: There are frequent direct trains from Paris (center) to Brussels: SNCF website.

Germany is connected to Brussels via the Thalys trains and ICE (Deutsche Bahn). 

Thalys service is also provided from the Netherlands. 

Eurostar provides a connection to London.

By plane: The most convenient airport is Brussels International. The airport is connected to the city center through train and buses (see the website for more information)

Public transportation in Brussels

The website of the public transportation in Brussels is STIB You can find there timetables and a map of the metro/tram/bus lines.

How to reach the meeting in Brussels

The meeting takes place at the Universite Libre de Bruxelles (campus de la plaine) and at the Vrije Univertiteit Brussel.  

On the first day it will be in the N.O. building, in the Solvay Institutes room (link on google maps). Directions: Follow the signs ULB and Physique / Mathématiques (N.O.) to find the N.O.-building. 5th floor of the N.O. building.

On the second day at the IIHE, Building G  in the VUB Campus (see map) in the "Neutrino Room" on the ground floor

The closest subway station is Delta (~5 min walk). From downtown (e.g. Central Station) take subway 5 direction Herrmann-Debroux and exit at Delta. 

Here is a schematic view of the campus, including the Metro Delta in the upper right corner and the N.O. building in the center.

Université Libre de Bruxelles
Boulevard du Triomphe (Campus de la Plaine)
1050 Bruxelles, Belgium 

VUB Main Campus Etterbeek
Pleinlaan 2
1050 Bruxelles, Belgium 

Dinner on Wed 21st of June

The social dinner for the in person participants has been organized at the restaurant  La Manufacture  downtown at 19:30. 

Hotels

A few hotel examples for the participants are here (booking.com can provide more options, also check Airbnb)

• Ibis Grand Place
• Ibis Brussels City Centre
• NH Brussels Grand Place Arenberg
• NH Brussels Louise
• Pentahotel
• Hotel Adagio Access Brussels Delta

 

For registration: an account is required.

If needed an external CERN account can be requested here: https://cern.ch/account/externals

 

Wednesday 21 June

10:30 → 10:40 Welcome

Speaker: Prof. Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE) and Università di Bologna)

10:40 → 10:50 Introduction

Speakers: Dirk Zerwas (Université Paris-Saclay (FR)), Fulvio Piccinini (Pavia University and INFN (IT)), Patrizia Azzi (INFN Padova (IT))

10:50 → 12:30 Beamstrahlung/Bremsstrahlung/ISR/FSR

10:50 Status of Beamstrahlung

Speaker: Thorsten Ohl

luminosity_spectra-bruxelles23.pdf

11:20 Increasing the accuracy of QED radiation: inclusive vs exclusive description

Speaker: Stefano Frixione (INFN)

eeisr.pdf

12:00 Discussion

12:30 → 14:00 Lunch

14:00 → 14:30 Benchmarks: Benchmarks for the ECFA report

14:00 Monte Carlo Tuning at Future Lepton Colliders

Speaker: Leif Erik Gellersen

leif_gellersen.pdf

14:30 → 15:30 KEY4HEP: Interface to KEY4HEP

14:30 Overview KEY4HEP Interface to Generators

Speaker: Gerardo Ganis

ECFA-WG2-Generators-In-Key4HEP-Overview-GGanis.pdf

14:50 MC Formats: HepMC

Speaker: Andy Buckley (University of Glasgow (GB))

2023-06 ECFA HepMC summary.pdf

15:15 Discussion

15:30 → 16:00 Beamstrahlung/Bremsstrahlung/ISR/FSR: Beamstrahlung/Bremsstrahlung

15:30 C^3 : First Results on Beamstrahlung

Speaker: Lindsey Gray (Fermi National Accelerator Lab. (US))

C3Bkg_LindseyGray_21062023.pdf

15:45 Discussion

16:00 → 16:30 Coffee Break

16:30 → 18:00 ECFA Topics

16:30 Focus topic MC needs: BSM

Speaker: Sarah Louise Williams (University of Cambridge (GB))

ECFA-genworkshop-bsmneeds-210623-final.pdf

16:50 Focus topic MC needs: Bhabha luminometry

Speaker: Maciej Skrzypek (Polish Academy of Sciences (PL))

ECFA_2023.pdf

17:10 Focus topic MC needs: ttbar threshold

Speaker: Aleksander Zarnecki (University of Warsaw (PL))

top_threshold_v4.pdf

17:30 Discussion

Thursday 22 June

09:00 → 10:30 Benchmarks: Benchmarks for the ECFA report

09:00 Lessons learned from LEP2

Speaker: Fulvio Piccinini (Pavia University and INFN (IT))

piccinini.pdf

09:30 Technical Benchmarks

Speaker: Alan Price

aprice-talk-ecfa.pdf

https://docs.google.com/document/d/1fkwg3JFFNmEUVNrUmu2O3hWF5ZHQRhv8WdWhwr3BSjU/edit

10:00 Generator Comparisons at Reconstruction Level

Speaker: Zhijie Zhao

ECFA-generators-zzj.pdf

10:30 → 11:00 Coffee Break

11:00 → 11:45 Benchmarks: Benchmarks for the ECFA Report

11:00 DIscussion

Benchmark document

11:45 → 12:30 Prediction Precision and Analysis

11:45 Status and prospects of parton shower accuracy

Speaker: Jack Oliver Helliwell (University of Oxford (GB))

JHelliwell_ECFA-talk.pdf

12:30 → 14:00 Lunch

14:00 → 15:50 Prediction Precision and Analysis

14:00 Precision for KKMC Monte Carlo -- necessary associated efforts

Speaker: Zbigniew Andrzej Was (Polish Academy of Sciences (PL))

ECFA23-was.pdf

14:25 Lessons learned from Vectorizing Madgraph

Speaker: Andrea Valassi (CERN)

20230622-MG5aMConGPU-ECFA-AV-v003.pdf

20230622-MG5aMConGPU-ECFA-AV-v003.pptx

14:50 Collinearly Enhanced Realizations of the YFS MC Approach to Precision Resummation Theory

Speaker: Bennie Ward

Collinearly-enhanced-YFS-theory-6-22-23.pdf

15:15 Discussion

15:50 → 16:00 Famous Last Words

Speakers: Dirk Zerwas (Université Paris-Saclay (FR)), Fulvio Piccinini (Pavia University and INFN (IT)), Patrizia Azzi (INFN Padova (IT))