FCC Week 2026

Session

Physics, Experiments and Detectors

Jun 9, 2026, 8:30 AM

F4050 Pieni juhlasali

Conveners

Physics, Experiments and Detectors: Physics Studies (i)

• Juan Alcaraz Maestre (CIEMAT - Madrid (ES))
• Bogdan Malaescu (LPNHE-Paris CNRS/IN2P3 (FR))

Physics, Experiments and Detectors: Detectors (i)

• Lucia Masetti (Johannes Gutenberg Universitaet Mainz (DE))

Physics, Experiments and Detectors: Education, Communication, Outreach, Inreach

• Claire Adam Bourdarios (CERN & CNRS / IN2P3)
• Panagiotis Charitos (CERN)

Physics, Experiments and Detectors: Physics Software and Computing

• Gerardo Ganis (CERN)

Physics, Experiments and Detectors: Physics Studies (ii)

• Eric Laenen (Nikhef National institute for subatomic physics (NL))

Physics, Experiments and Detectors: Detectors (ii)

• Valentina Cairo (CERN)

Physics, Experiments and Detectors: Joint session Physics & Physics Software and Computing

• Michele Selvaggi (CERN)

Physics, Experiments and Detectors: Physics Studies 3

• Gaelle Boudoul (Centre National de la Recherche Scientifique (FR))
• Santeri Laurila (CERN & Helsinki Institute of Physics (FI))

Physics, Experiments and Detectors: Detectors (iii)

• Tae Jeong Kim (Hanyang University (KR))

Physics, Experiments and Detectors: Joint session Physics Software and Computing & Detectors

• Chris Rasmussen (Brookhaven National Laboratory (US))

222. Electroweak physics at FCC-ee: Status and Plans

Matteo Defranchis (CERN)

6/9/26, 8:30 AM

(2) Oral presentation

223. QCD & gammagamma at FCC-ee: Status and Plans

Giovanni Stagnitto (INFN e Universita Genova (IT))

6/9/26, 8:50 AM

224. Flavor Physics at FCC-ee: Status and Plans

Guy Wilkinson (University of Oxford (GB))

6/9/26, 9:05 AM

(2) Oral presentation

225. BSM Physics at FCC-ee: Status and Plans

Rebeca Gonzalez Suarez (Uppsala University (SE))

6/9/26, 9:25 AM

(2) Oral presentation

226. Precision Calculation for FCC-ee: Status Plans

Janusz Gluza (University of Silesia (PL))

6/9/26, 9:40 AM

(2) Oral presentation

228. Projects for Vertex detectors

Dominik Dannheim (CERN)

6/9/26, 10:30 AM

(2) Oral presentation

229. PID with trackers

Chris Rasmussen (Brookhaven National Laboratory (US))

6/9/26, 10:50 AM

(2) Oral presentation

230. Vertex Reconstruction

Mariarosaria D'Alfonso (Massachusetts Inst. of Technology (US))

6/9/26, 11:10 AM

(2) Oral presentation

231. Overview of occupancy studies and discussion of a minimal trigger system

Thorsten Wengler (CERN)

6/9/26, 11:30 AM

(2) Oral presentation

232. TDAQ Simulation status

Jan Eysermans (Massachusetts Inst. of Technology (US))

6/9/26, 11:45 AM

(2) Oral presentation

307. Carte blanche to the CERN ECO group

Arnaud Marsollier (CERN)

6/9/26, 3:30 PM

(2) Oral presentation

308. Carte blanche to the FCC Earlly Career Professionals

Armin Ilg (University of Zurich)

6/9/26, 3:50 PM

106. The new PED ECOI Work Package

Claire Adam Bourdarios (CERN & CNRS / IN2P3)

6/9/26, 4:10 PM

(2) Oral presentation

The FCC-PED organisational chart now includes a Work Package called ECOI, where the “I” stands for In-Reach, by analogy with the more familiar Out-Reach. The group’s structure, ambitions, and first deliverable — a fully updated website — are being presented to the FCC collaboration for the first time, with the goal of fostering feedback, new ideas, and broader participation.

10. Towards an FCC Computing Model

Giovanni Guerrieri (CERN)

6/10/26, 8:30 AM

(2) Oral presentation

FCC distributed computing is advancing toward a WLCG-like model to meet the challenges of planning for a collider 15 years away. Long procurement cycles for data centres and rapid technology shifts mean we must start planning now.
We currently consolidate our community by adopting CERN Tier 0 resources (SWAN, lxbatch, ml.cern.ch, dedicated computing nodes) while evolving toward distributed...

148. MC Production Tools and Schedule

Pantelis Kontaxakis (Universite de Geneve (CH))

6/10/26, 8:48 AM

(2) Oral presentation

The FCC Physics, Experiments and Detectors program relies on a coherent centralized productions infrastructure to provide datasets for physics analyses, detector performance studies, or other uses during the Reference Design Phase. This talk will present the current status, priorities, and schedule of the FCC MC production and GRID tools activity. It will cover the organization of central...

239. Key4hep Status and Plans

Juan Miguel Carceller (CERN)

6/10/26, 9:06 AM

(2) Oral presentation

151. ACTS and FCC

Paul Gessinger (CERN)

6/10/26, 9:24 AM

(2) Oral presentation

ACTS (A Common Tracking Software) is an experiment-agnostic, open-source track reconstruction toolkit, originally derived from the ATLAS Inner Detector reconstruction software. It provides a comprehensive set of tracking algorithms covering geometry description, track finding, and track fitting, and has been extended over time to be fully independent of any specific experiment.

With recent...

157. Leveraging Synergies Between CEPCSW and FCCSW

Prof. Sheng-Sen Sun (Institute of High Energy Physics, Chinese Academy of Sciences)

6/10/26, 9:42 AM

(2) Oral presentation

The Circular Electron-Positron Collider (CEPC) needs a strong and flexible software system to support detector design, simulation, reconstruction, and physics analysis. The CEPC software (CEPCSW) is part of the Key4hep ecosystem and uses well-established tools: the Gaudi framework for event processing, EDM4hep for data modeling, DD4hep for detector description, Geant4 for simulation, and ROOT...

147. Four-jet production at electron-positron colliders at NNLO

Matteo Marcoli (University of Durham)

6/10/26, 10:30 AM

(2) Oral presentation

In this talk I will present the calculation of the next-to-next-to-leading order (NNLO) correction to four-jet production at electron-positron colliders. I will highlight the details of the calculation, which is performed with the antenna subtraction technique, present precise phenomenological predictions for the four-jet rate and discuss the agreement with LEP data.

167. Highly granular calorimeters with fully embedded electronics

Lucia Masetti (Johannes Gutenberg Universitaet Mainz (DE))

6/10/26, 10:30 AM

(2) Oral presentation

Concepts for highly granular calorimeters with fully embedded electronics have been developed in different technologies within the CALICE and FCAL collaborations with the aim of optimally exploiting the Particle Flow Algorithm for jet reconstruction. Within the DRDCalo collaboration large-scale prototypes allowing to demonstrate also the construction and integration aspects are being built and...

92. Cornering Natural SUSY at a Tera-$Z$ Factory

Alessandro Valenti (University of Basel)

6/10/26, 10:48 AM

(2) Oral presentation

We discuss indirect probes of the MSSM at FCC-ee, with particular emphasis on the complementarity between single Higgs production and electroweak precision tests at the Tera-$Z$ run. In addition to flavor-universal contributions to the $STWY$ oblique parameters, we point out important flavor non-universal effects. An example of the latter is the heavy Higgs doublet, which gives tree-level...

166. ALLEGRO Noble Liquid Calorimeter

Dr Mikael Mieskolainen (CERN)

6/10/26, 10:50 AM

(2) Oral presentation

The ALLEGRO ECAL group is developing a noble liquid electromagnetic calorimeter designed to deliver high granularity, low-noise operation, and excellent energy resolution, meeting the demanding requirements of precision physics measurements at the FCC-ee. Current end-to-end R&D activities span detector-level design, electrode and cold front-end electronics development, simulation and software...

242. Optical Readout Calorimetry

Hwi Dong Yoo (Yonsei University (KR))

6/10/26, 11:04 AM

19. Long-lived Left-Right Symmetry at FCC-ee

Jonathan Kriewald (Jožef Stefan Institut)

6/10/26, 11:06 AM

(2) Oral presentation

We give an extensive discussion of the displaced signals of heavy Majorana neutrino production at future electron-positron colliders operating at various proposed energies in the context of the Left-Right symmetric model. A comprehensive collection of channels is taken into account, ranging from those featuring $W$ and $W_R$ mediation to those induced by scalar mixing and gauge/scalar boson...

240. Global fits and the search for new physics: past, present and future

Anders Kvellestad (University of Oslo)

6/10/26, 11:24 AM

243. Muon Systems

Tae Jeong Kim (Hanyang University (KR))

6/10/26, 11:24 AM

(2) Oral presentation

276. CEPC detector R&D

Joao Guimaraes da Costa (IHEP)

6/10/26, 11:42 AM

(2) Oral presentation

241. Warm dark matter at the FCC

Duarte Da Silva Feiteira

6/10/26, 11:42 AM

272. MC Generators Status and Plans

Andrzej Konrad Siodmok

6/10/26, 1:30 PM

273. Analysis Tools and Visualisation

Juraj Smiesko (CERN)

6/10/26, 1:48 PM

(2) Oral presentation

274. Tracking and Vertexing Status and Plans

Andrea De Vita (CERN & Università di Padova)

6/10/26, 2:06 PM

(2) Oral presentation

102. High Level Reconstruction Status and Plans

Sanghyun Ko (CERN)

6/10/26, 2:24 PM

(2) Oral presentation

This talk reviews the current status and plans for the reconstruction, covering particle-flow performance and object-level reconstruction (leptons, photons, jets) across various detector concepts of FCC-ee. We will also review the status of high-level reconstruction, such as jet flavor tagging and tau reconstruction, where modern machine-learning-based approaches are driving substantial gains.

275. LEP Data Status and Plans

Apranik Fatehi (University of Hamburg - CERN - DESY)

6/10/26, 2:42 PM

(2) Oral presentation

268. Higgs at FCC-ee: Status and Plans

Marco Delmastro (CNRS/IN2P3 LAPP)

6/11/26, 8:30 AM

(2) Oral presentation

269. Top quark at FCC-ee: Status and Plans

Xunwu Zuo (EPFL - Ecole Polytechnique Federale Lausanne (CH))

6/11/26, 8:50 AM

(2) Oral presentation

270. FCC-hh: Status and Plans

Sarah Louise Williams (University of Cambridge (GB))

6/11/26, 9:05 AM

(2) Oral presentation

271. Global Fits Status and Plans

Andrew Gilbert (LLR / CNRS / École Polytechnique (FR))

6/11/26, 9:25 AM

264. ALFA status and plans

Duccio Abbaneo (CERN)

6/11/26, 10:30 AM

(2) Oral presentation

265. ALLEGRO status and plans

Hucheng Chen (Brookhaven National Laboratory (US))

6/11/26, 10:48 AM

(2) Oral presentation

266. CLD status and plans

Jinlong Zhang (Argonne National Laboratory (US))

6/11/26, 11:06 AM

(2) Oral presentation

267. IDEA status and plans

Paolo Giacomelli (Universita e INFN, Bologna (IT)), Paolo Giacomelli (INFN Sezione di Bologna)

6/11/26, 11:24 AM

162. ILD status and plans

Taikan Suehara (ICEPP, The University of Tokyo (JP))

6/11/26, 11:42 AM

(2) Oral presentation

ILD (International Large Detector) is a long-standing detector concept optimized for the particle flow. While it is originally designed for ILC, it is now also adapted as a FCC-ee detector design.
I will present the basic concept of ILD, optimization and physics studies in the past, status of detector development as well as recent design and performance studies on adapting circular colliders....

255. Geometry and Simulation Status and Plans

Joshua Falco Beirer (CERN)

6/11/26, 1:30 PM

256. Digitizers and Local Reconstruction Status and Plans

Ulrich Einhaus (KIT - Karlsruhe Institute of Technology (DE))

6/11/26, 1:48 PM

257. Silicon Sensor Digitization

Jona Dilg (University of Zurich (CH))

6/11/26, 2:06 PM

258. Muon System Optimization for Displaced Signatures

Mahmoud Ali (University of Bologna)

6/11/26, 2:24 PM

259. Surviving Generations of Code Changes: Preserving Physics and Performance

Andreas Loeschcke Centeno (CERN)

6/11/26, 2:42 PM

21. A new approach to long-lived particle detection at hadron colliders: the DELIGHT-SHIELD concept

Rhitaja Sengupta (BCTP and Physikalisches Institut der Universität Bonn, Germany)

Physics Studies (theory and experiment)

(3) Paper

We propose a fundamental shift in the search for beyond the Standard Model long-lived particles (LLPs) at high-luminosity hadron colliders by prioritizing physical background suppression over traditional inner tracking. We introduce DELIGHT-SHIELD, a dedicated detector design for a 100 TeV Future Circular Collider at a dedicated interaction point for LLP searches. By replacing the inner parts...

28. LEP Data@EDM4hep: mitigating data loss risks by increasing data FAIRness, with a view on FCC-ee

Jacopo Fanini (CERN & Université Paris-Saclay)

Physics Software and Computing

(3) Paper

The LEP data represents the most precise and highest centre-of-mass energy sample of $e^{+}e^{−}$ collision data collected to date. Numerous scientific articles have been published since the conclusion of the experiments, underscoring the ongoing relevance of this dataset and the need to secure its long-term availability according to FAIR data preservation principles. These data could also...

39. LLM Agents for Algorithm Development and Analysis at the FCC

Dolores Garcia (CERN)

Physics Software and Computing

(3) Paper

We present two LLM-driven agentic systems that automate end-to-end tasks related to code development for reconstruction algorithm and physics analysis workflows for the Future Circular Collider (FCC).
GaudiFactory translates a natural-language
prompt into a compilable, runnable Gaudi algorithm, complete
with CMake configuration, a Python steering file, and validation plots.
FCC Fast Full...

11. Projections of H$\to\tau\tau$ cross-section at FCC-ee

Sofia Giappichini (KIT - Karlsruhe Institute of Technology (DE))

Physics Studies (theory and experiment)

(3) Paper

The Future Circular Collider (FCC) stands at the forefront of the European Strategy for Particle Physics as the future flagship project at CERN. The H$\to\tau\tau$ decay, featuring a large branching ratio, clean identification in the FCC-ee environment, and the possibility to reconstruct polarization information, is an excellent channel to measure Higgs boson properties.
This work shows the...

33. Rare $Z\to 6\mu$ Decays at FCC-$ee$ as Probes of Dark Sector New Physics

Stefanie Hurschler (UZH)

Physics Studies (theory and experiment)

(3) Paper

We investigate the rare decay $Z \to 6\mu$, which is allowed in the Standard Model (SM) with an estimated branching ratio ($\mathcal{BR}$) of $\mathcal{O}(10^{-10})$, and assess its potential as a probe for physics beyond the SM (BSM) at the FCC-$ee$. In particular, we study a dark sector scenario with a dark photon $A'$ and a dark Higgs boson $h_D$, arising from a broken $U(1)_D$ gauge...