Belle II Germany Meeting 2025

Name: Belle II Germany Meeting 2025
Start: 2025-09-08T13:00:00+02:00
End: 2025-09-10T21:50:00+02:00
Location: ROT building

8 Sept 2025, 13:00 → 10 Sept 2025, 21:50 Europe/Berlin

0.056 (ROT building)

0.056

ROT building

Käthe-Kümmel-Straße 1

Description

Welcome to the Belle II Germany Meeting 2025, which will be hosted at University of Bonn.

The conveners of the parallel sessions on Tuesday are:

Physics Analysis and Theory: Ana Luisa Moreira de Carvalho, Valerio Bertacchi, Nico Gubernari
Hardware and Upgrade: Isabel Haide, Christian Bespin
Software, Performance and Computing: Stefan Wallner, Patrick Ecker

Please contact the conveners above if you would like to give a talk in the parallel session.

Speakapp connection details can be found here.

Please book your accomodation as soon as possible.

Registration

Participants

72 View full list

Monday 8 September
- 13:00 → 14:00
  
  Registration 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 14:00 → 16:15
  Plenary Session: Opening Talks: Belle II, LHCb, Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  
  Poster_winners.pdf
  - 14:00
    
    Welcome 15m
    
    BelleII_FSP_Bonn_Meeting_2025_Welcome.pdf
  - 14:15
    
    Belle II Status & German Involvement 30m
    
    Speaker: Florian Bernlochner (Belle (SuperKEKB Experiment))
    
    B2Germany_B2_Status.pdf
  - 14:45
    
    LHCb Upgrade 30m
    
    Speaker: Klaas Padeken
    
    1757323535114_padeken_2025_09_8_LHCb_UpgradeII.pdf
  - 15:15
    
    Exclusive B decays at the precision frontier (theory) 30m
    
    Speaker: Nico Gubernari
    
    Bonn_talk.pdf
  - 15:45
    
    Precision flavour physics with inclusive penguin decays (theory) 30m
    
    Speaker: Tobias Hurth
    
    GermanBelle2Meeting2025.pdf
- 16:15 → 16:45
  
  Coffee Break 30m 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 16:45 → 17:00
  
  Social Activities: Belle II Germany Picture U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Straße 1
- 17:00 → 18:00
  
  ECR: Session 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 17:00 → 18:00
  PI Meeting U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 17:00
    
    PXD status and plans 15m
    
    Speaker: Fabian Becherer (BELLE (BELLE Gruppe))
    
    fabian_becherer_pxd.pdf
  - 17:15
    
    PT 15m
    
    Speaker: Maren Meinhard
    
    PT_ErUM-FSP-Belle-II_2025.pdf
  - 17:45
    
    Sustainability 10m
    
    Speaker: Thomas Kuhr (LMU Munich)
    
    Sustainability0925.pdf
- 18:30 → 20:30
  
  Belle II Germany Dinner 2h Phoenica Lounge
  
  Phoenica Lounge
  
  Clemens-August-Straße 34, 53115 Bonn
- 20:30 → 22:00
  
  Social Activities: Belle II Quizz + Karaoke U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Straße 1
Tuesday 9 September
- 09:00 → 10:30
  Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 09:00
    
    B->K nu nu 16m
    
    Speaker: Caspar Schmitt (Belle (SuperKEKB Experiment))
    
    BKnunu_ITA.pdf
  - 09:16
    
    B->K nu nu reinterpretation 16m
    
    Speaker: Lorenz Ennio Gaertner (BELLE (BELLE II Experiment))
    
    b2germany-gaertner.pdf
  - 09:32
    
    Search for B->pi nu nu with tagging methods 16m
    
    Speaker: Boyang Yu (BELLE (BELLE II Experiment))
    
    FSP2025.pdf
  - 09:48
    
    Search for B+->K* tau el with hadronic tagging 16m
    
    Speaker: Lara Fuchs (BELLE (BELLE II Experiment))
    
    KstTauEll_FSP25.pdf
  - 10:05
    
    Theory talk: B meson fully hadronic decays 25m
    
    Speaker: Marta Burgos (Maastrich)
    
    Belle_MartaBurgos_pdf.pdf
- 09:00 → 10:30
  Hardware and Upgrade 1.027 (ROT)
  
  1.027
  
  ROT
  
  Käthe-Kümmel-Str. 1
  
  Conveners: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
  - 09:00
    
    PXD Status and Operation 25m
    
    Speaker: Jannes Schmitz (University of Bonn)
    
    pxd_status_jschmitz_b2germany2025.pdf
  - 09:25
    
    Upgrade of the Belle II Vertex Detector with depleted monolithic CMOS active pixel sensors 25m
    
    Speaker: Yannik Buch ((BELLE (BELLE II Experiment)))
    
    FSP_Bonn_2025_yannik_buch.pdf
  - 09:50
    
    GNN-ETM - Design and Deployment of a Graph Neural Network Trigger for the ECL 25m
    
    Speaker: Isabel Haide (Karlsruhe Institute of Technology)
    
    fsp_talk_gnnetm-3.pdf
- 09:00 → 10:30
  Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 09:00
    
    Track finding efficiency in $\mu^+ \mu^- \gamma$ Events 20m
    
    Speaker: Lukas Grussbach (BELLE (BELLE II Experiment))
    
    B2Germany-Grussbach.pdf
  - 09:20
    
    Slow pion efficiency 20m
    
    Speaker: Melisa-Melek Akdag (BELLE (BELLE II Experiment))
    
    Belle2GermanySlowpi.pdf
  - 09:40
    
    Graph Neural Network based Track Finding for SVD and CDC 25m
    
    Speaker: Tristan Brandes (Karlsruhe Institute of Technology (KIT))
    
    FSP_2025_GNN-based Track Finder for SVD and CDC.pdf
  - 10:05
    
    Detector Alignment at Belle II 25m
    
    Speaker: Tadeas Bilka (BELLE (BELLE Gruppe))
    
    AlignmentBonn.pdf
- 10:30 → 11:00
  
  Coffee Break & Institutional Posters 30m 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 11:00 → 12:30
  Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 11:00
    
    Dalitz analysis of B->D pi+ pi 16m
    
    Speaker: Melisa-Melek Akdag (BELLE (BELLE II Experiment))
    
    BelleIIGermanyMeeting-Bonn2025.pdf
  - 11:16
    
    tau->3pi nu: integrating background contributions with neural networks in partial wave analysis 16m
    
    Speaker: Miriam Weiskopf (Max Planck Institute for Physics)
    
    Background_contributions_in_PWA.pdf
  - 11:32
    
    R(D*) with inclusive tagging 16m
    
    Speaker: Fabio Novissimo (BELLE (BELLE II Experiment))
    
    R(D_) using an inclusive tagging method-2.pdf
  - 11:48
    
    R(D*) from 1-prong tau decays and tau polarization with hadronic tagging 16m
    
    Speaker: Ilias Tsaklidis
    
    2025.09.09_rdstar1prong_itsaklid_b2germany-1.pdf
  - 12:04
    
    Theory talk: radiative correction to B-> el nu gamma 25m
    
    Speaker: Max Ferré (Mainz)
    
    Max_FERRE_Bonn_2025.pdf
- 11:00 → 12:30
  Hardware and Upgrade 1.027 (ROT)
  
  1.027
  
  ROT
  
  Käthe-Kümmel-Str. 1
  
  Conveners: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
  - 11:00
    
    First Studies of a GNN based ECL Trigger on Versal-FPGAs for the Belle II Upgrade 25m
    
    Speaker: Thomas Gideon Lobmaier (BELLE (BELLE II Experiment))
    
    FSP_Talk_Version_2-3.pdf
  - 11:25
    
    Upgrade of the Belle II First-Level Neural Track Trigger by Three-Dimensional Hough Finding and Deep Neural Networks on FPGAs 25m
    
    Speaker: Simon Hiesl (BELLE (BELLE II Experiment))
    
    b2germany_2025_3dhough_hiesl.pdf
  - 11:50
    
    Design of the OBELIX Monolithic Active Pixel Sensor for the Belle II VTX Upgrade 25m
    
    Speaker: Alexander Walsemann (BELLE (BELLE II Experiment))
    
    b2germany_2025_obelix_walsemann.pdf
- 11:00 → 12:30
  Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 11:00
    
    Advancements in Analysis-Level Particle Identification through Machine Learning Techniques at Belle II 30m
    
    Speaker: Martin Bartl (Max Planck Institute for Physics)
    
    BelleII_Germany_Meeting_25_Bartl.pdf
  - 11:30
    
    Development and Testing of a Neutron Identification Algorithm for Belle II 20m
    
    Speaker: Georgios Alexandris (BELLE (BELLE II Experiment))
    
    Alexandris Belle II Germany Meeting 2025.pdf
  - 11:50
    
    Photon efficiency calibration for MC16 20m
    
    Speaker: Sebastiano Raiz (BELLE (BELLE II Experiment))
    
    photonEff_raiz.pdf
  - 12:10
    
    Low-energy efficiency studies in $\tau^-\to \pi^- \pi^0\nu_\tau$ decays 20m
    
    Speaker: Dr Mengchuan Du (BELLE (BELLE II Experiment))
    
    PhotonEfficiency_v1.pdf
- 14:00 → 16:00
  Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 14:00
    
    Forward-backward asymmetry in B->X el nu 16m
    
    Speaker: Raynette van Tonder (BELLE (BELLE II Experiment))
    
    van_Tonder_Xlnu_FSP_2025.pdf
  - 14:16
    
    Differential branching fraction and angular distributions in B->Xc el nu 16m
    
    Speaker: Ms Rajeshwari Roy (BELLE (BELLE II Experiment))
    
    B2 Germany Meeting 09.09_Roy.pdf
  - 14:32
    
    Theory talk: B->K+a decays: which framework leads to consistent exclusion plots? 25m
    
    Speaker: Xiyuan Gao (KIT)
    
    Gao-09.09.2025.pdf
  - 14:57
    
    Search for a new spin 0 mediator in B->K S 16m
    
    Speaker: Luc Brandl (Karlsruhe Institute of Technology)
    
    FSP_Talk_Luc_Brandl_2025.pdf
  - 15:13
    
    Search for ALPs produced via photon-fusion 16m
    
    Speaker: Frederik Schmitt (Karlsruhe Institute of Technology (KIT))
    
    FSchmitt_BelleIIFSP_AlpPhotonFusion.pdf
  - 15:29
    
    Theory talk: Constraining B-Mesogenesis with B->pψ 25m
    
    Speaker: Zachary Wüthrich (Siegen)
    
    B-Mesogenesis.pdf
- 14:00 → 16:00
  Hardware and Upgrade 1.027 (ROT)
  
  1.027
  
  ROT
  
  Käthe-Kümmel-Str. 1
  
  Conveners: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
  - 14:00
    
    All-silicon detector modules for the inner pixel layers of the VTX upgrade 25m
    
    Speaker: Andreas Ulm (BELLE (BELLE II Experiment))
    
    BelleII_Germany.pdf
  - 14:25
    
    PXD Emergency Shutdown Investigation 25m
    
    Speaker: Paula Scholz (University of Bonn)
    
    belle2_paulascholz.pdf
  - 14:50
    
    DePFET X-ray Irradiation Studies 25m
    
    Speaker: Georgios Giakoustidis (University of Bonn)
    
    DePFET_X-ray_irradiation_studies_short.pdf
  - 15:15
    
    Challenges Of Hardware-Software Co-Design Of A Graph Neural Network For The ECL Trigger 25m
    
    Speaker: Frank Michael Baptist (BELLE (BELLE II Experiment))
    
    slides.pdf
- 14:00 → 16:00
  Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 14:00
    
    Data production and skims 25m
    
    Speaker: Valerio Bertacchi (University of Bonn)
    
    presentation 25 - skim Belle II Germany.pdf
  - 14:25
    
    SysVar: A new tool for enhancing consistency in the treatment of systematics 25m
    
    Speakers: Agrim Aggarwal (BELLE (BELLE II Experiment)), Ilias Tsaklidis
    
    2025.09.09_sysvar_fsp_meeting-1.pdf
  - 14:50
    
    The Belle II Document Server 25m
    
    Speaker: David Koch (BELLE (BELLE II Experiment))
    
    talk.pdf
  - 15:15
    
    b2luigi for amplitude analysis 20m
    
    Speakers: Godo Kurten (Max Planck Institute for Physics), Miriam Weiskopf (Max Planck Institute for Physics)
    
    Belle2GermanyB2Luigi.pdf
- 16:00 → 16:30
  
  Coffee Break & Institutional Posters 30m 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 16:30 → 18:00
  PI Meeting: PI meeting II U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 16:30
    
    Strategie für die nächste Förderperiode (PXD, Upgrade, Software, Computing, Analysen, FSP, Theorie) 30m
    
    Strategy0925.pdf
  - 17:00
    
    Sprecher in der nächsten Förderperiode 10m
  - 17:10
    
    ECR issues 20m
  - 17:30
    
    FSP 15m
    
    Speaker: Veronika Kratzer (not set)
    
    20250908_B2GermanyMeeting_Bonn_PIMeeting.pdf
  - 17:45
    
    Next Belle II Germany meeting 5m
- 16:30 → 18:00
  
  Poster Session 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- 19:00 → 21:00
  
  ECR: Dinner 60 seconds to Napoli
  
  60 seconds to Napoli
  
  Kaiserpl. 11, 53113 Bonn
- 19:00 → 21:00
  
  PI Dinner Antica Pizzeria Nennillo
  
  Antica Pizzeria Nennillo
  
  Im Krausfeld 8, 53111, Bonn
Wednesday 10 September
- 09:00 → 10:10
  Plenary Session 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24
  
  Poster_winners.pdf
  - 09:00
    
    ML in Particle Physics 40m
    
    Speaker: Nicole Hartman (Munich)
    
    Hartman-Belle2-2025-09-10-builds.pdf
  - 09:40
    
    Outreach 30m
    
    Speaker: Veronika Kratzer (not set)
    
    20250910_B2GermanyMeeting_Bonn_OutreachSessio.pdf
- 10:10 → 10:55
  
  FTD tour (Markus Ball) 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24, 53115 Bonn
- 11:00 → 11:30
  
  Coffee break (FTD) 30m 0.052 (FTD)
  
  0.052
  
  FTD
- 11:30 → 13:10
  Plenary Session: Summaries 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24
  
  Poster_winners.pdf
  - 11:30
    
    ECR news 20m
    
    Speakers: Ana Luisa Moreira de Carvalho (BELLE (BELLE Gruppe)), Lorenz Ennio Gaertner (BELLE (BELLE II Experiment))
    
    ECR@B2Germany.pdf
  - 11:50
    
    Summary: Theory and Analysis 20m
    
    Speakers: Ana Luisa Moreira de Carvalho (BELLE (BELLE Gruppe)), Nico Gubernari, Valerio Bertacchi (University of Bonn)
    
    BelleIIGermany2025_AnalysisTheory_Summary.pdf
    
    BelleIIGermany2025_AnalysisTheory_Summary.pdf
  - 12:10
    
    Summary: Hardware and Upgrade 20m
    
    Speakers: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
    
    Hardware and Upgrade - FSP Summary.pdf
  - 12:30
    
    Summary: Software and Performance 20m
    
    Speakers: Patrick Ecker (Karlsruhe Institute of Technology), Stefan Wallner (Max Planck Institute for Physics)
    
    2025-09-10 Software_Performance_Computing.pdf
  - 12:50
    
    Close-out 10m
    
    Speaker: Thomas Kuhr (LMU Munich)
    
    Belle2GermanyCloseout0925.pdf

Belle II Germany Meeting 2025

0.056

ROT building

0.056

ROT building

0.056

ROT building

0.056

ROT building

U1.059

ROT

0.056

ROT building

U1.059

ROT

Phoenica Lounge

U1.059

ROT

0.056

ROT building

1.027

ROT

U1.059

ROT

0.056

ROT building

0.056

ROT building

1.027

ROT

U1.059

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0.056

ROT building

1.027

ROT

U1.059

ROT

0.056

ROT building

U1.059

ROT

0.056

ROT building

60 seconds to Napoli

Antica Pizzeria Nennillo

0.052

FTD

0.052

FTD

0.052

FTD

0.052

FTD