Belle II Germany Meeting 2025
from
Monday 8 September 2025 (13:00)
to
Wednesday 10 September 2025 (21:50)
Monday 8 September 2025
13:00
13:00 - 14:00
Room: 0.056
14:00
Opening Talks: Belle II, LHCb, Theory
Opening Talks: Belle II, LHCb, Theory
14:00 - 16:15
Room: 0.056
Contributions
14:00
Welcome
14:15
Belle II Status & German Involvement
-
Florian Bernlochner
(
Belle (SuperKEKB Experiment)
)
14:45
LHCb Upgrade
-
Klaas Padeken
15:15
Exclusive B decays at the precision frontier (theory)
-
Nico Gubernari
15:45
Precision flavour physics with inclusive penguin decays (theory)
-
Tobias Hurth
16:15
Coffee Break
Coffee Break
16:15 - 16:45
Room: 0.056
16:45
Belle II Germany Picture
Belle II Germany Picture
16:45 - 17:00
Room: U1.059
17:00
17:00 - 18:00
Room: 0.056
17:00 - 18:00
Room: U1.059
Contributions
17:00
PXD status and plans
-
Fabian Becherer
(
BELLE (BELLE Gruppe)
)
17:15
PT
-
Maren Meinhard
17:30
FSP
-
Veronika Kratzer
(
not set
)
17:45
Sustainability
-
Thomas Kuhr
(
LMU Munich
)
17:55
Next Belle II Germany meeting
18:30
Belle II Germany Dinner
Belle II Germany Dinner
18:30 - 20:30
20:30
20:30 - 22:00
Room: U1.059
Tuesday 9 September 2025
09:00
09:00 - 10:30
Room: 0.056
Contributions
09:00
B->K nu nu
-
Caspar Schmitt
(
Belle (SuperKEKB Experiment)
)
09:16
B->K nu nu reinterpretation
-
Lorenz Ennio Gaertner
(
BELLE (BELLE II Experiment)
)
09:32
Search for B->pi nu nu with tagging methods
-
Boyang Yu
(
BELLE (BELLE II Experiment)
)
09:48
Search for B+->K* tau el with hadronic tagging
-
Lara Fuchs
(
BELLE (BELLE II Experiment)
)
10:05
Theory talk: B meson fully hadronic decays
-
Marta Burgos
(
Maastrich
)
09:00 - 10:30
Room: 3.020
Contributions
09:00
PXD Status and Operation
-
Jannes Schmitz
(
University of Bonn
)
09:25
Upgrade of the Belle II Vertex Detector with depleted monolithic CMOS active pixel sensors
-
Yannik Buch
(
(BELLE (BELLE II Experiment))
)
09:50
GNN-ETM - Design and Deployment of a Graph Neural Network Trigger for the ECL
-
Isabel Haide
(
Karlsruhe Institute of Technology
)
09:00 - 10:30
Room: U1.059
Contributions
09:00
Track finding efficiency in $\mu^+ \mu^- \gamma$ Events
-
Lukas Grussbach
(
BELLE (BELLE II Experiment)
)
09:20
Slow pion efficiency
-
Melisa-Melek Akdag
(
BELLE (BELLE II Experiment)
)
09:40
Graph Neural Network based Track Finding for SVD and CDC
-
Tristan Brandes
(
Karlsruhe Institute of Technology (KIT)
)
10:05
Detector Alignment at Belle II
-
Tadeas Bilka
(
BELLE (BELLE Gruppe)
)
10:30
Coffee Break & Institutional Posters
Coffee Break & Institutional Posters
10:30 - 11:00
Room: 0.056
11:00
11:00 - 12:30
Room: 0.056
Contributions
11:00
Dalitz analysis of B->D pi+ pi
-
Melisa-Melek Akdag
(
BELLE (BELLE II Experiment)
)
11:16
tau->3pi nu: integrating background contributions with neural networks in partial wave analysis
-
Miriam Weiskopf
(
Max Planck Institute for Physics
)
11:32
R(D*) with inclusive tagging
-
Fabio Novissimo
(
BELLE (BELLE II Experiment)
)
11:48
R(D*) from 1-prong tau decays and tau polarization with hadronic tagging
-
Ilias Tsaklidis
12:04
Theory talk: radiative correction to B-> el nu gamma
-
Max Ferré
(
Mainz
)
11:00 - 12:30
Room: 3.020
Contributions
11:00
First Studies of a GNN based ECL Trigger on Versal-FPGAs for the Belle II Upgrade
-
Thomas Gideon Lobmaier
(
BELLE (BELLE II Experiment)
)
11:25
Upgrade of the Belle II First-Level Neural Track Trigger by Three-Dimensional Hough Finding and Deep Neural Networks on FPGAs
-
Simon Hiesl
(
BELLE (BELLE II Experiment)
)
11:50
Design of the OBELIX Monolithic Active Pixel Sensor for the Belle II VTX Upgrade
-
Alexander Walsemann
(
BELLE (BELLE II Experiment)
)
11:00 - 12:30
Room: U1.059
Contributions
11:00
Advancements in Analysis-Level Particle Identification through Machine Learning Techniques at Belle II
-
Martin Bartl
(
Max Planck Institute for Physics
)
11:30
Development and Testing of a Neutron Identification Algorithm for Belle II
-
Georgios Alexandris
(
BELLE (BELLE II Experiment)
)
11:50
Photon efficiency calibration for MC16
-
Sebastiano Raiz
(
BELLE (BELLE II Experiment)
)
12:10
Low-energy efficiency studies in $\tau^-\to \pi^- \pi^0\nu_\tau$ decays
-
Mengchuan Du
(
BELLE (BELLE II Experiment)
)
14:00
14:00 - 16:00
Room: 0.056
Contributions
14:00
Forward-backward asymmetry in B->X el nu
-
Raynette van Tonder
(
BELLE (BELLE II Experiment)
)
14:16
Differential branching fraction and angular distributions in B->Xc el nu
-
Rajeshwari Roy
(
BELLE (BELLE II Experiment)
)
14:32
Theory talk: B->K+a decays: which framework leads to consistent exclusion plots?
-
Xiyuan Gao
(
KIT
)
14:57
Search for a new spin 0 mediator in B->K S
-
Luc Brandl
(
Karlsruhe Institute of Technology
)
15:13
Search for ALPs produced via photon-fusion
-
Frederik Schmitt
(
Karlsruhe Institute of Technology (KIT)
)
15:29
Theory talk: B mixing
-
Zachary Wüthrich
(
Siegen
)
14:00 - 16:00
Room: 3.020
Contributions
14:00
All-silicon detector modules for the inner pixel layers of the VTX upgrade
-
Andreas Ulm
(
BELLE (BELLE II Experiment)
)
14:25
PXD Emergency Shutdown Investigation
-
Paula Scholz
(
University of Bonn
)
14:50
DePFET X-ray Irradiation Studies
-
Georgios Giakoustidis
(
University of Bonn
)
15:15
Challenges Of Hardware-Software Co-Design Of A Graph Neural Network For The ECL Trigger
-
Frank Michael Baptist
(
BELLE (BELLE II Experiment)
)
14:00 - 16:00
Room: U1.059
Contributions
14:00
Data production and skims
-
Valerio Bertacchi
(
University of Bonn
)
14:25
SysVar: A new tool for enhancing consistency in the treatment of systematics
-
Agrim Aggarwal
(
BELLE (BELLE II Experiment)
)
Ilias Tsaklidis
14:50
The Belle II Document Server
-
David Koch
(
BELLE (BELLE II Experiment)
)
15:15
Computing for Belle II at DESY
-
Andreas Gellrich
(
BELLE (BELLE Gruppe)
)
15:40
b2luigi for amplitude analysis
-
Godo Kurten
(
Max Planck Institute for Physics
)
16:00
Coffee Break & Institutional Posters
Coffee Break & Institutional Posters
16:00 - 16:30
Room: 0.056
16:30
PI meeting II
PI meeting II
16:30 - 18:00
Room: U1.059
Contributions
16:30
Strategie für die nächste Förderperiode (PXD, Upgrade, Software, Computing, Analysen, FSP, Theorie)
17:00
Sprecher in der nächsten Förderperiode
17:10
ECR issues
16:30 - 18:00
Room: 0.056
19:00
ECR dinner
ECR dinner
19:00 - 21:00
19:00 - 21:00
Wednesday 10 September 2025
09:00
09:00 - 09:45
Room: 0.052
09:50
09:50 - 11:00
Room: 0.052
Contributions
09:50
ML in Particle Physics
-
Nicole Hartman
(
Munich
)
10:30
Outreach
-
Veronika Kratzer
(
not set
)
11:00
Coffee break (FTD)
Coffee break (FTD)
11:00 - 11:30
Room: 0.052
11:30
Summaries
Summaries
11:30 - 13:10
Room: 0.052
Contributions
11:30
ECR news
-
Ana Luisa Moreira de Carvalho
(
BELLE (BELLE Gruppe)
)
Lorenz Ennio Gaertner
(
BELLE (BELLE II Experiment)
)
11:50
Summary: Theory and Analysis
12:10
Summary: Hardware and Upgrade
12:30
Summary: Software and Performance
12:50
Close-out
-
Thomas Kuhr
(
LMU Munich
)