LHC BSM Working Group general meeting

10 Nov 2025, 13:00 → 13 Nov 2025, 18:00 Europe/Zurich

40/S2-B01 - Salle Bohr (CERN)

Arnaud Ferrari (Uppsala University (SE)), Daniel Johnson (University of Birmingham (GB)), Livia Soffi (INFN Roma I (IT)), Matthew Philip Mccullough (CERN), Michelangelo Mangano (CERN), Philip Coleman Harris (Massachusetts Inst. of Technology (US)), Tamara Vazquez Schroeder (Institut de Física d’Altes Energies (IFAE)), Tim Cohen (CERN)

Welcome to the first general assembly of the LHC BSM working group, which acts as an umbrella for the already existing DM and LLP working groups, and for the new Re-interpretation working group arising from the former Re-interpretation Forum initiative. A new subgroup on prompt BSM signatures, covering other searches beyond DM and LLPs, completes the scientific content of the LHC BSM working group.

The goal of the general assembly is to review the current status of BSM searches in the experiments, as well as the perspective and initiatives of the various subgroups. For that purpose, ample time will be dedicated to open discussions to collect feedback and input from all participants on possible additional directions and initiatives to be covered by the LHC BSM WG.

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-bsmwg

CERN access

During registration you have the possibility to request an access card. We will then grant access which will generate an Access Card which you should print out and bring with you to show to the staff at the front gate.

If you are unable to print your pass, you can use the provided access code on a small machine at the front gate to print your pass on the day.

CERN accommodation

A number of rooms at the CERN hostel have been pre-booked for the meeting. For information on how to access the room booking, please see the Accommodation section.  If you prefer to stay outside CERN a list of suggestions can be found on the same page.

 

Monday 10 November

BSM physics at the LHC - overview talks

Conveners: Arnaud Ferrari (Uppsala University (SE)), Daniel Johnson (University of Birmingham (GB)), Livia Soffi (INFN Roma I (IT)), Matthew Philip Mccullough (CERN), Michelangelo Mangano (CERN), Philip Coleman Harris (Massachusetts Inst. of Technology (US)), Tamara Vazquez Schroeder (Institut de Física d’Altes Energies (IFAE)), Tim Cohen (CERN)

1 Introduction & welcome

Speaker: Livia Soffi (INFN Roma I (IT))

2 Recap of the SEARCH conference

Speaker: Maurizio Pierini (CERN)

3 Theory overview

Speaker: Matthew Philip Mccullough (CERN)

4 Overview from LHC experiments

Speaker: Dr Louie Dartmoor Corpe (Laboratoire de Physique Clermont Auvergne (LPCA))

5 Report from NextGen TH+EXP

Speaker: Guilherme Guedes

15:15 Coffee/Tea break

6 Report from the dark shower task force

7 Re-interpretation overview

Speaker: Martin Habedank (University of Glasgow)

8 Overview from top physics

Speaker: Sergio Sanchez Cruz (CERN)

9 Overview from BSM Higgs

Speaker: Tatjana Lenz (University of Bonn (DE))

10 Overview from EFT

Speaker: Gauthier Durieux (CP3 - UCLouvain)

18:00 Welcome drinks

Tuesday 11 November

Long-lived particles

Conveners: Alberto Escalante Del Valle (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)), Andre Lessa (CCNH - Univ. Federal do ABC), Andrii Usachov (Nikhef and VU (NL)), Cristovao Vilela (Laboratory of Instrumentation and Experimental Particle Physics (PT)), Dave Casper (University of California Irvine (US)), Dominique Trischuk (Brandeis University (US)), Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT)), James Pinfold (University of Alberta (CA))

11 Overview of experimental results of the PBC benchmarks

Speaker: Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT))

12 Reinterpretation rare Higgs decays in BC5 benchmark

Speaker: Alberto Escalante Del Valle (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))

13 Summary Plots for HNLs

Speaker: Dominique Trischuk (University of Victoria (CA))

14 Gaps in experimental coverage and new signatures

Speakers: Andre Lessa (CCNH - Univ. Federal do ABC), Andrii Usachov (Nikhef and VU (NL)), Elena Pompa Pacchi (University of Oklahoma (US)), Jingyu Luo (Brown University (US))

15 Long-lived particles in ALICE

Speaker: Mesut Arslandok (Yale University (US))

16 Discussion

Speakers: Alberto Escalante Del Valle (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)), Andre Lessa (CCNH - Univ. Federal do ABC), Andrii Usachov (Nikhef and VU (NL)), Cristovao Vilela (Laboratory of Instrumentation and Experimental Particle Physics (PT)), Dave Casper (University of California Irvine (US)), Dominique Trischuk (University of Victoria (CA)), Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT)), James Pinfold (University of Alberta (CA)), Mesut Arslandok (Yale University (US))

11:05 Coffee/Tea break

17 Long-lived particles in FASER

Speaker: Cristiano Sebastiani (CERN)

18 Long-lived particles in SND

Speaker: Simona Ilieva Ilieva (CERN)

19 Long-lived particles in MoEDAL

Speaker: James Pinfold (University of Alberta (CA))

20 Feedback on reinterpretation material

Speaker: Andre Lessa (CCNH - Univ. Federal do ABC)

21 Discussion

Speakers: Alberto Escalante Del Valle (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)), Andre Lessa (CCNH - Univ. Federal do ABC), Andrii Usachov (Nikhef and VU (NL)), Cristovao Vilela (Laboratory of Instrumentation and Experimental Particle Physics (PT)), Dave Casper (University of California Irvine (US)), Dominique Trischuk (University of Victoria (CA)), Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT)), James Pinfold (University of Alberta (CA)), Mesut Arslandok (Yale University (US))

Prompt BSM signatures

Conveners: Giuliano Gustavino (Sapienza Universita e INFN, Roma I (IT)), Roberto Franceschini (Rome 3 U.), Zeynep Demiragli (Boston University (US))

22 Introduction of the group

23 Theoretical topics on Anomaly Detection (15+5)

24 Experimental results on Anomaly Detection

Speaker: Roberto Seidita (ETH Zurich (CH))

25 Theoretical Topics on Heavy Resonances (15+5)

Speaker: Liantao Wang

26 Experimental results on Heavy Resonances

16:00 Coffee/Tea break

27 Theoretical results on SUSY - outlook (15+5)

Speakers: Nathaniel Craig (Stanford University), Nathaniel Craig, Nathaniel Craig

28 Experimental status of SUSY and pMSSM combinations

Wednesday 12 November

Dark Matter

Conveners: Deborah Pinna (University of Wisconsin Madison (US)), Sukanya Sinha (The University of Manchester (GB)), Tim M.P. Tait (University of California, Irvine), Titus Mombächer (University of Cincinnati (US)), Ulrich Andreas Haisch (University of Oxford (GB))

29 Introduction

Speaker: Sukanya Sinha (The University of Manchester (GB))

30 Expression of interest for 2HDM+a taskforce

31 s-channel DM models benchmark proposal

Speaker: Philip Coleman Harris (Massachusetts Inst. of Technology (US))

32 t-channel DM models benchmark proposal

Speaker: Luca Panizzi (Universita' della Calabria)

10:05 Coffee break

33 ESPPU Dark Matter working group Briefing book summary

Speaker: Monica D'Onofrio (University of Liverpool (GB))

34 ESPPU DM working group tools

Speaker: Leo Keito Chazallet (Centre National de la Recherche Scientifique (FR))

35 Forum discussion: DM interpretation or "How can we prepare best for the full Run-3 dataset?".

36 Reserved for the "Quests for new physics" session at the 4th International Symposium on the History of Particle Physics

https://indico.cern.ch/event/1480892/timetable/#b-606471-quests-for-new-physic

Thursday 13 November

Re-interpretation

Conveners: Carlos Vazquez Sierra (Universidade da Coruña (ES)), Martin Habedank (University of Glasgow), Sabine Kraml (LPSC Grenoble), Sezen Sekmen (Kyungpook National University (KR))

Agenda

37 Preservation/reinterpretation efforts in the experiments (20+10): ATLAS

Speaker: Jonas Wurzinger (Technische Universitat Munchen (DE))

38 Preservation/reinterpretation efforts in the experiments (20+10): CMS

39 Preservation/reinterpretation efforts in the experiments (20+10): LHCb

Speaker: Felicia Volle (University of Birmingham (GB))

10:30 Coffee break

40 REI taskforces (20+10): HS3

Speaker: Dr Carsten Burgard (Technische Universitaet Dortmund (DE))

41 Open Event Generation (20+10)

Speaker: Mariana Isabel Vivas Albornoz (Deutsches Elektronen-Synchrotron (DE))

42 REI taskforces (20+10): Modular detector emulation

Re-interpretation: Hands On

Conveners: Carlos Vazquez Sierra (Universidade da Coruña (ES)), Martin Habedank (University of Glasgow), Sabine Kraml (LPSC Grenoble), Sezen Sekmen (Kyungpook National University (KR))

Agenda