Conferences and Workshops 2023



06.-10. November 2023

Machine learning has become a hot topic in particle physics over the past several years. In particular, there has been a lot of progress in the areas of particle and event identification, reconstruction, generative models, anomaly detection and more. In this conference, we will discuss current progress in these areas, focusing on new breakthrough ideas and existing challenges.

The ML4Jets workshop will be open to the full community and will include LHC experiments as well as theorists and phenomenologists interested in this topic. We explicitly welcome contributions and participation from method scientists as well as adjacent scientific fields such as astronomy, astrophysics, astroparticle physics, hadron- and nuclear physics and other domains facing similar challenges.

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Contributions from TTK:
Marie Hein: Back to the Roots: Tree-Based Algorithms for Weakly Supervised Anomaly Detection
Michael Kramer: Theory Closure
Alexander Mück: Learning the language of QCD jets with transformers


Young Scientists Meeting of our CRC TRR 257

16.-18. October 2023

The Young Scientists Meeting - This is a three-day meeting for all members of the Collaborative Research Center (CRC) TRR 257. The scientific talks will be presented by young scientists (PhD students or PostDocs) and they will focus on the various projects of our CRC. This will give all participants the opportunity to gain a better overview of these projects and allow the speakers to present their research in front of a large audience. Besides scientific talks, this meeting also includes a Workshop to promote well-being within the research community and a talk about funding opportunities. The Young Scientists Meeting 2023 will be held in person at the University of Siegen.

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Beträge des TTK:
Nikolaos Dimitrakopoulos: Four top final states with NLO accuracy in perturbative QCD: 4 lepton decay channel
Felix Eschment: Subleading effects in soft-gluon emission at one-loop in QCD
Marie Hein: Back to the Roots: Tree-Based Algorithms for Weakly Supervised Anomaly Detection
Sven Yannick Klein: Higgsstrahlung and Higgs production beyond the Standard Model
Lena Rathmann: Phenomenological Aspects of Flavoured Majorana Dark Matter
Minos Reinartz: NLO QCD predictions for off-shell ttW production in association with a light jet at the LHC
Tom Schellenberger: Higgs Production With Full Quark Mass Dependence
Daniel Stremmer: Top-quark pair production with two isolated photons at NLO QCD


16th International Workshop on Top Quark Physics (TOP2023)

24.-29. September 2023

The 16th International Workshop on Top Quark Physics (TOP 2023) will be held in person, from September 24 to 29, 2023, in Traverse City, Michigan, USA. TOP 2023 brings together experimentalists and theorists to present and discuss the latest developments in top-quark physics. This year's meeting will be hosted by North American institutions on Lake Michigan. Young scientists are especially encouraged to participate, and there will be a poster session as well as a block of short plenary talks in the "Young Scientist Forum'', allowing them to present their work.

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Contributions from TTK:
Michele Lupattelli: Study of additional jet activity in top quark pair production and decay at the LHC


QCD@LHC 2023

September 4-8 2023

The 13th edition of QCD@LHC, aiming at fostering discussions and collaboration between experimenters and theorists, working on strong interactions at the LHC, will be held in Durham, UK.

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Contributions from TTK:
Terry Generet: Top-pair events with B-hadrons at theLHC
Tom Schellenberger: Subleading Effects in Soft-Gluon Emission at One-Loop in Massless QCD
Daniel Stremmer: NLO QCD corrections to ttjj in dilepton decay channel



May 28 - June 02 2023

16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology . This conference is the 16th in the series of biennial RADCOR conferences on radiative corrections. It is devoted to the applications of quantum field theory to particle physics phenomenology. Subjects will include precision calculations for colliders; progress in higher-loop and higher-multiplicity calculations in the Standard Model; cross sections for new physics; interpretations of experimental data; new techniques for calculations; advances in computer-algebra methods; new theoretical developments. The conference will be held in Crieff, an attractive old market town in the heart of Perthshire in central Scotland.

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Contributions from TTK:
Daniel Stremmer: ttjj - NLO QCD corrections to top quark pair production and decays at the LHC
Michal Czakon: Jet and Photon Physics at high perturbative orders in QCD


11th Large Hadron Collider Physics Conference (LHCP 2023)

May 22-26 2023

The main goal of the conference is to provide intense and lively discussions between experimenters and theorists in such research areas as the Standard Model Physics and Beyond, the Higgs Boson Physics, Heavy Quark Physics and Heavy Ion Physics, as well as to share recent progress in the high luminosity upgrades and future collider developments. The 11th edition of the LHCP Conference is hosted by the Faculty of Physics and Institute of Physics of the University of Belgrade, in Belgrade, Serbia.

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Contributions from TTK:
Robert Harlander: Precision Higgs Physics


Spring meeting of the DPG

March 20-24 2023

The DPG Spring Meeting of the Matter and Cosmos Section (SMuK) takes place on the campus of the Technical University Dresden. It covers

  • Extraterrestrial Physics
  • Gravitation and Relativity
  • Hadronic and Nuclear Physics
  • Plasma Physics
  • Radiation and Medical Physics
  • Particle Physics
  • Theoretical and Mathematical Physics

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Contributions from TTK:
Hanno Jacobs: Unstable cosmic-ray nuclei constrain low-diffusion zones in the disk
Marie Hein: Using Density Estimation for Resonance Searches at the LHC
Jakob W. Linder: Projecting composite operators onto a unique basis
Philipp Mertsch: Galactic cosmic rays: What have we learned and what's next?
Vo Hong Minh Phan: From test particle simulations to cosmic-ray transport
Georg Schwefer: Diffuse Emission of Galactic High-Energy Neutrinos from a Global Fit of Cosmic Rays
Laurin Söding: Bayesian Inference of the 3D Galactic HI-Gas Density
Anton Stall: Stochastic modelling of cosmic ray sources for diffuse high-energy neutrinos
Malgorzata Worek: QCD at the LHC -- Precision for Discoveries


The Gradient Flow in QCD and other Strongly Coupled Field Theories

March 20-24 2023

The gradient flow field transformation is a continuous smoothing transformation that removes ultraviolet fluctuations. It can serve as a tool to renormalize quantum field theories, allowing numerical studies of strongly coupled systems. The flow has been used extensively in lattice gauge theory calculations, both in QCD and in beyond the standard model settings for applications including scale setting, the determination of the running coupling constant and the corresponding renormalization group beta function, and the topological structure of the vacuum. Many of the newly emerging applications of the gradient flow depend on the perturbative connection of the gradient flow and continuum renormalization schemes, requiring difficult perturbative calculations that match the non-perturbative lattice methods. This workshop will bring together experts in lattice and perturbative QCD to discuss recent progress in the application of the gradient flow, develop common ideas, identify needs and possibilities for the gradient flow and to spark collaborative efforts.

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Contributions from TTK:
Janosch Borgulat: The Chromomagnetic Dipole Operator in the Gradient Flow
Robert Harlander: Selected aspects of the gradient flow in perturbation theory


Annual meeting of the CRC P3H

March 01-02 2023

The annual meeting of our CRC TRR 257 “Particle Physics Phenomenology after the Higgs Discovery'' in collaboration with KIT, University of Siegen, and University of Heidelberg takes place here in Aachen.

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