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
- Registration 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- Plenary Session: Opening Talks: Belle II, LHCb, Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  
  Poster_winners.pdf
  - 1
    
    Welcome
    
    BelleII_FSP_Bonn_Meeting_2025_Welcome.pdf
  - 2
    
    Belle II Status & German Involvement
    
    Speaker: Florian Bernlochner (Belle (SuperKEKB Experiment))
    
    B2Germany_B2_Status.pdf
  - 3
    
    LHCb Upgrade
    
    Speaker: Klaas Padeken
    
    1757323535114_padeken_2025_09_8_LHCb_UpgradeII.pdf
  - 4
    
    Exclusive B decays at the precision frontier (theory)
    
    Speaker: Nico Gubernari
    
    Bonn_talk.pdf
  - 5
    
    Precision flavour physics with inclusive penguin decays (theory)
    
    Speaker: Tobias Hurth
    
    GermanBelle2Meeting2025.pdf
- 16:15
  
  Coffee Break 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- Social Activities: Belle II Germany Picture U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Straße 1
- ECR: Session 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- PI Meeting U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 6
    
    PXD status and plans
    
    Speaker: Fabian Becherer (BELLE (BELLE Gruppe))
    
    fabian_becherer_pxd.pdf
  - 7
    
    PT
    
    Speaker: Maren Meinhard
    
    PT_ErUM-FSP-Belle-II_2025.pdf
  - 8
    
    Sustainability
    
    Speaker: Thomas Kuhr (LMU Munich)
    
    Sustainability0925.pdf
- 18:30
  
  Belle II Germany Dinner Phoenica Lounge
  
  Phoenica Lounge
  
  Clemens-August-Straße 34, 53115 Bonn
- Social Activities: Belle II Quizz + Karaoke U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Straße 1
Tuesday 9 September
- Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 9
    
    B->K nu nu
    
    Speaker: Caspar Schmitt (Belle (SuperKEKB Experiment))
    
    BKnunu_ITA.pdf
  - 10
    
    B->K nu nu reinterpretation
    
    Speaker: Lorenz Ennio Gaertner (BELLE (BELLE II Experiment))
    
    b2germany-gaertner.pdf
  - 11
    
    Search for B->pi nu nu with tagging methods
    
    Speaker: Boyang Yu (BELLE (BELLE II Experiment))
    
    FSP2025.pdf
  - 12
    
    Search for B+->K* tau el with hadronic tagging
    
    Speaker: Lara Fuchs (BELLE (BELLE II Experiment))
    
    KstTauEll_FSP25.pdf
  - 13
    
    Theory talk: B meson fully hadronic decays
    
    Speaker: Marta Burgos (Maastrich)
    
    Belle_MartaBurgos_pdf.pdf
- 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
    
    PXD Status and Operation
    
    Speaker: Jannes Schmitz (University of Bonn)
    
    pxd_status_jschmitz_b2germany2025.pdf
  - 15
    
    Upgrade of the Belle II Vertex Detector with depleted monolithic CMOS active pixel sensors
    
    Speaker: Yannik Buch ((BELLE (BELLE II Experiment)))
    
    FSP_Bonn_2025_yannik_buch.pdf
  - 16
    
    GNN-ETM - Design and Deployment of a Graph Neural Network Trigger for the ECL
    
    Speaker: Isabel Haide (Karlsruhe Institute of Technology)
    
    fsp_talk_gnnetm-3.pdf
- Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 17
    
    Track finding efficiency in $\mu^+ \mu^- \gamma$ Events
    
    Speaker: Lukas Grussbach (BELLE (BELLE II Experiment))
    
    B2Germany-Grussbach.pdf
  - 18
    
    Slow pion efficiency
    
    Speaker: Melisa-Melek Akdag (BELLE (BELLE II Experiment))
    
    Belle2GermanySlowpi.pdf
  - 19
    
    Graph Neural Network based Track Finding for SVD and CDC
    
    Speaker: Tristan Brandes (Karlsruhe Institute of Technology (KIT))
    
    FSP_2025_GNN-based Track Finder for SVD and CDC.pdf
  - 20
    
    Detector Alignment at Belle II
    
    Speaker: Tadeas Bilka (BELLE (BELLE Gruppe))
    
    AlignmentBonn.pdf
- 10:30
  
  Coffee Break & Institutional Posters 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 21
    
    Dalitz analysis of B->D pi+ pi
    
    Speaker: Melisa-Melek Akdag (BELLE (BELLE II Experiment))
    
    BelleIIGermanyMeeting-Bonn2025.pdf
  - 22
    
    tau->3pi nu: integrating background contributions with neural networks in partial wave analysis
    
    Speaker: Miriam Weiskopf (Max Planck Institute for Physics)
    
    Background_contributions_in_PWA.pdf
  - 23
    
    R(D*) with inclusive tagging
    
    Speaker: Fabio Novissimo (BELLE (BELLE II Experiment))
    
    R(D_) using an inclusive tagging method-2.pdf
  - 24
    
    R(D*) from 1-prong tau decays and tau polarization with hadronic tagging
    
    Speaker: Ilias Tsaklidis
    
    2025.09.09_rdstar1prong_itsaklid_b2germany-1.pdf
  - 25
    
    Theory talk: radiative correction to B-> el nu gamma
    
    Speaker: Max Ferré (Mainz)
    
    Max_FERRE_Bonn_2025.pdf
- Hardware and Upgrade 1.027 (ROT)
  
  1.027
  
  ROT
  
  Käthe-Kümmel-Str. 1
  
  Conveners: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
  - 26
    
    First Studies of a GNN based ECL Trigger on Versal-FPGAs for the Belle II Upgrade
    
    Speaker: Thomas Gideon Lobmaier (BELLE (BELLE II Experiment))
    
    FSP_Talk_Version_2-3.pdf
  - 27
    
    Upgrade of the Belle II First-Level Neural Track Trigger by Three-Dimensional Hough Finding and Deep Neural Networks on FPGAs
    
    Speaker: Simon Hiesl (BELLE (BELLE II Experiment))
    
    b2germany_2025_3dhough_hiesl.pdf
  - 28
    
    Design of the OBELIX Monolithic Active Pixel Sensor for the Belle II VTX Upgrade
    
    Speaker: Alexander Walsemann (BELLE (BELLE II Experiment))
    
    b2germany_2025_obelix_walsemann.pdf
- Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 29
    
    Advancements in Analysis-Level Particle Identification through Machine Learning Techniques at Belle II
    
    Speaker: Martin Bartl (Max Planck Institute for Physics)
    
    BelleII_Germany_Meeting_25_Bartl.pdf
  - 30
    
    Development and Testing of a Neutron Identification Algorithm for Belle II
    
    Speaker: Georgios Alexandris (BELLE (BELLE II Experiment))
    
    Alexandris Belle II Germany Meeting 2025.pdf
  - 31
    
    Photon efficiency calibration for MC16
    
    Speaker: Sebastiano Raiz (BELLE (BELLE II Experiment))
    
    photonEff_raiz.pdf
  - 32
    
    Low-energy efficiency studies in $\tau^-\to \pi^- \pi^0\nu_\tau$ decays
    
    Speaker: Dr Mengchuan Du (BELLE (BELLE II Experiment))
    
    PhotonEfficiency_v1.pdf
- Analysis and Theory 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
  - 33
    
    Forward-backward asymmetry in B->X el nu
    
    Speaker: Raynette van Tonder (BELLE (BELLE II Experiment))
    
    van_Tonder_Xlnu_FSP_2025.pdf
  - 34
    
    Differential branching fraction and angular distributions in B->Xc el nu
    
    Speaker: Ms Rajeshwari Roy (BELLE (BELLE II Experiment))
    
    B2 Germany Meeting 09.09_Roy.pdf
  - 35
    
    Theory talk: B->K+a decays: which framework leads to consistent exclusion plots?
    
    Speaker: Xiyuan Gao (KIT)
    
    Gao-09.09.2025.pdf
  - 36
    
    Search for a new spin 0 mediator in B->K S
    
    Speaker: Luc Brandl (Karlsruhe Institute of Technology)
    
    FSP_Talk_Luc_Brandl_2025.pdf
  - 37
    
    Search for ALPs produced via photon-fusion
    
    Speaker: Frederik Schmitt (Karlsruhe Institute of Technology (KIT))
    
    FSchmitt_BelleIIFSP_AlpPhotonFusion.pdf
  - 38
    
    Theory talk: Constraining B-Mesogenesis with B->pψ
    
    Speaker: Zachary Wüthrich (Siegen)
    
    B-Mesogenesis.pdf
- Hardware and Upgrade 1.027 (ROT)
  
  1.027
  
  ROT
  
  Käthe-Kümmel-Str. 1
  
  Conveners: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
  - 39
    
    All-silicon detector modules for the inner pixel layers of the VTX upgrade
    
    Speaker: Andreas Ulm (BELLE (BELLE II Experiment))
    
    BelleII_Germany.pdf
  - 40
    
    PXD Emergency Shutdown Investigation
    
    Speaker: Paula Scholz (University of Bonn)
    
    belle2_paulascholz.pdf
  - 41
    
    DePFET X-ray Irradiation Studies
    
    Speaker: Georgios Giakoustidis (University of Bonn)
    
    DePFET_X-ray_irradiation_studies_short.pdf
  - 42
    
    Challenges Of Hardware-Software Co-Design Of A Graph Neural Network For The ECL Trigger
    
    Speaker: Frank Michael Baptist (BELLE (BELLE II Experiment))
    
    slides.pdf
- Software/Performance/Computing U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 43
    
    Data production and skims
    
    Speaker: Valerio Bertacchi (University of Bonn)
    
    presentation 25 - skim Belle II Germany.pdf
  - 44
    
    SysVar: A new tool for enhancing consistency in the treatment of systematics
    
    Speakers: Agrim Aggarwal (BELLE (BELLE II Experiment)), Ilias Tsaklidis
    
    2025.09.09_sysvar_fsp_meeting-1.pdf
  - 45
    
    The Belle II Document Server
    
    Speaker: David Koch (BELLE (BELLE II Experiment))
    
    talk.pdf
  - 46
    
    b2luigi for amplitude analysis
    
    Speakers: Godo Kurten (Max Planck Institute for Physics), Miriam Weiskopf (Max Planck Institute for Physics)
    
    Belle2GermanyB2Luigi.pdf
- 16:00
  
  Coffee Break & Institutional Posters 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- PI Meeting: PI meeting II U1.059 (ROT)
  
  U1.059
  
  ROT
  
  Käthe-Kümmel-Str. 1
  - 47
    
    Strategie für die nächste Förderperiode (PXD, Upgrade, Software, Computing, Analysen, FSP, Theorie)
    
    Strategy0925.pdf
  - 48
    
    Sprecher in der nächsten Förderperiode
  - 49
    
    ECR issues
  - 50
    
    FSP
    
    Speaker: Veronika Kratzer (not set)
    
    20250908_B2GermanyMeeting_Bonn_PIMeeting.pdf
  - 51
    
    Next Belle II Germany meeting
- Poster Session 0.056
  
  0.056
  
  ROT building
  
  Käthe-Kümmel-Straße 1
- ECR: Dinner 60 seconds to Napoli
  
  60 seconds to Napoli
  
  Kaiserpl. 11, 53113 Bonn
- PI Dinner Antica Pizzeria Nennillo
  
  Antica Pizzeria Nennillo
  
  Im Krausfeld 8, 53111, Bonn
Wednesday 10 September
- Plenary Session 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24
  
  Poster_winners.pdf
  - 52
    
    ML in Particle Physics
    
    Speaker: Nicole Hartman (Munich)
    
    Hartman-Belle2-2025-09-10-builds.pdf
  - 53
    
    Outreach
    
    Speaker: Veronika Kratzer (not set)
    
    20250910_B2GermanyMeeting_Bonn_OutreachSessio.pdf
- FTD tour (Markus Ball) 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24, 53115 Bonn
- 11:00
  
  Coffee break (FTD) 0.052 (FTD)
  
  0.052
  
  FTD
- Plenary Session: Summaries 0.052 (FTD)
  
  0.052
  
  FTD
  
  Kreuzbergweg 24
  
  Poster_winners.pdf
  - 54
    
    ECR news
    
    Speakers: Ana Luisa Moreira de Carvalho (BELLE (BELLE Gruppe)), Lorenz Ennio Gaertner (BELLE (BELLE II Experiment))
    
    ECR@B2Germany.pdf
  - 55
    
    Summary: Theory and Analysis
    
    Speakers: Ana Luisa Moreira de Carvalho (BELLE (BELLE Gruppe)), Nico Gubernari, Valerio Bertacchi (University of Bonn)
    
    BelleIIGermany2025_AnalysisTheory_Summary.pdf
    
    BelleIIGermany2025_AnalysisTheory_Summary.pdf
  - 56
    
    Summary: Hardware and Upgrade
    
    Speakers: Christian Bespin (Universität Bonn), Isabel Haide (Karlsruhe Institute of Technology)
    
    Hardware and Upgrade - FSP Summary.pdf
  - 57
    
    Summary: Software and Performance
    
    Speakers: Patrick Ecker (Karlsruhe Institute of Technology), Stefan Wallner (Max Planck Institute for Physics)
    
    2025-09-10 Software_Performance_Computing.pdf
  - 58
    
    Close-out
    
    Speaker: Thomas Kuhr (LMU Munich)
    
    Belle2GermanyCloseout0925.pdf

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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

ROT

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