Flavours at FCC Workshop

from Wednesday, 19 November 2025 (09:00) to Friday, 21 November 2025 (18:00)
CERN (4/3-006)

        : Sessions
    /     : Talks
        : Breaks
19 Nov 2025
20 Nov 2025
21 Nov 2025
AM
09:00
Setting the scene (until 12:30)
09:00 Workshop goals, FCC-ee essentials, and the flavour reach of HL LHC - Stephane Monteil (Université Clermont Auvergne (FR))  
09:35 Why flavour? - Yosef Nir  
10:10 The flavour reach of Belle II and commonalities with FCC-ee - Karim TRABELSI (TYL - KEK)  
10:45 --- Coffee ---
11:15 Exploring New Physics at the flavour frontier with FCC-ee - Joe Davighi  
11:50 Detector challenges and concepts at FCC-ee - Mogens Dam (University of Copenhagen (DK))  
09:00
WG3: CP-conserving (mostly) measurements (until 11:00)
09:00 Why CPC processes? - Raynette Van Tonder (Karlsruhe Institute of Technology)  
09:15 $V_{ub}$ and $V_{cb}$ from $B^+$ and $B^+_c$ leptonic decays - Xunwu Zuo (EPFL - Ecole Polytechnique Federale Lausanne (CH))  
09:35 $V_{cb}$, $V_{cs}$ from $W$ and $t$ decays - Michele Tammaro  
10:05 Lessons learned from LEP - Fabrizio Palla (Universita & INFN Pisa (IT))  
10:35 Lattice QCD input for CPC decays - Andreas Juttner (CERN)  
11:00 --- Coffee break ---
11:30
WG2: CP-violating measurements (until 12:30)
11:30 CKM angle alpha : status and prospective - Olivier DESCHAMPS Dr Olivier Deschamps (Université Clermont Auvergne (FR))  
12:00 CP Violation at FCC-ee -- Interplay with Flavor and EDMs - Joachim Brod (University of Cincinnati)  
09:00 ECFA plenaries https://indico.cern.ch/event/1567662/  
10:00 --- Coffee break ---
10:15
WG5: tau and selected EW (until 12:15)
10:15 Introduction  
10:30 Theoretical perspective on tau decays: LFU and LFV - Lukas Allwicher  
10:55 Status and prospects for hadronic tau decays at FCC-ee - Antonio Rodriguez Sanchez  
11:15 Measurement of Tau Properties at FCC-ee - Alberto Lusiani (Scuola Normale Superiore and INFN, sezione di Pisa)  
11:35 Taus at Belle II - Justine Serrano (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)  
11:55 Electroweak AFB and Tau Polarization measurements at FCC-ee - Romain Madar (Université Clermont Auvergne (FR))  
PM
12:30 --- Lunch ---
14:00
WG1: rare decays (until 16:00)
14:00 Rare $b$-decays at FCC-ee: status and future directions - Eluned Anne Smith (Massachusetts Inst. of Technology (US))  
14:30 Rare b hadron decays at FCC-ee: theoretical opportunities and challenges - Méril REBOUD (CNRS - IJClab)  
15:00 $B\rightarrow$ invisible and related modes at FCC-ee - Paula Alvarez Cartelle (University of Cambridge (GB))  
15:30 FEI: reconstructing B-decays with missing energy at Belle II and beyond - Valerio Bertacchi  
16:00 --- Coffee break ---
16:30
Beyond the WGs: session 1 (until 17:30)
16:30 Flavour physics at FCC-hh - Diego Martinez Santos (University of A Coruna - UDC (ES))  
17:00 Strange physics at FCC-ee - Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL))  
18:30
Workshop reception (until 20:30)
12:30 --- Lunch ---
14:00
WG2: CP-violating measurements (until 15:00)
14:00 Time-dependent CP violation in $B_s^0 \to \phi \mu^+ \mu^-$ with the IDEA detector concept - Valeriia Lukashenko (University of Zurich (CH))  
14:30 CP Violation in B Decays at the FCC-ee: A Theorist's Perspective - Robert Fleischer (Nikhef)  
15:00 --- Coffee break ---
15:30
WG4: charm (until 17:30)
15:30 Why Charm - Dominik Stefan Mitzel (Technische Universitaet Dortmund (DE))  
15:45 The Charm mission -- Theory overview - Yuval Grossman  
16:15 Rare charm decays: opportunities for the FCC-ee - Dominik Suelmann  
16:40 CP-violation in D-decays - Willy Herbert Karl Weber (University Clermont Auvergne & University of Dortmund) Willy Weber  
17:05 Time dependent CPV opportunities - Nathan Philip Jurik (CERN)  
19:30
Dinner (until 22:30)
12:30 --- Lunch ---
13:30
Beyond the WGs: session 2 (until 14:30)
13:30 Hadron spectroscopy prospects at FCC - Ivan Polyakov (The University of Manchester (GB))  
14:00 Prospects for absolute BF and fragmentation-fraction measurements at FCC-ee - Patrick Robbe (Université Paris-Saclay (FR))  
14:30
Close-out session (until 16:00)
14:30 Theory summary and next steps - Zoltan Ligeti (Lawrence Berkeley National Lab. (US))  
15:00 Experimental summary and next steps - Guy Wilkinson (University of Oxford (GB))