Karlsruhe School of Elementary Particle and Astroparticle Physics: Science and Technology (KSETA)

Emanuel Pfeffer

Emanuel Pfeffer

Contact information

Institute: Institute of Experimental Particle Physics (ETP)
Room: CN 401 / R. 406
Phone: +49 721 608 23819
Email: emanuel.pfeffer@kit.edu // emanuel.pfeffer@cern.ch

PhD Thesis

Simultaneous cross section measurements of top quark-antiquark pair production with additional heavy flavor jets at the CMS experiment
Prof. Dr. Ulrich Husemann & Prof. Dr. Thomas Müller

Research focus

- SM tt+heavy flavor cross section measurements at the CMS experiment at CERN.
- Artificial Intelligence models for jet and event identification.
- Heavy flavor jet tagging algorithms.

Publications

Publications
[1] A case study of sending graph neural networks back to the test bench for applications in high-energy particle physics | In: Computing and Software for Big Science 8, 13 (2024) Linkbib ]
[2] Inclusive and differential cross section measurements of ttbb production in the lepton+jets channel at √s = 13 TeV | In: JHEP Linkbib ]
[3] Study of ttbb and ttW background modelling for ttH analyses (arXiv) Linkbib ]

Proceedings

Proceedings
[1] Inclusive and differential cross section measurements of ttbb production in the lepton+jets channel at √s = 13 TeV Linkbib ]
[2] Heavy flavor jet tagging algorithm developments at CMS for HL-LHC Linkbib ]

Unreviewed publications

publications-UNreviewed
[1] Studies on tt+bb production at the CMS experiment. MT, Karlsruhe Institute of Technology (KIT), 2021. Linkbib ]

Conferences and Talks (excerpt)

Graph neural networks on the test bench in HEP applications Phystat - Statistics meets Machine Learning Imperial College, 🇬🇧 Sep 9-12, 2024 Materials
tt+heavy flavor event classification with graph neural networks at the CMS experiment DPG Spring Meeting Karlsruhe, 🇩🇪 Mar 4–8, 2024 Abstract
Inclusive and differential cross section measurements of ttbb production in the lepton+jets channel at √s = 13 TeV 16th International Workshop on Top Quark Physics Traverse City, MI, 🇺🇸 Sep 24-29, 2023 Slides
Heavy flavor jet tagging algorithm developments for HL-LHC: Latest Particle Transformer performance CMS BTV Brussels, 🇧🇪 Jul 24–26, 2023 Slides [restricted CERN access]
tt+heavy flavor classification at the CMS experiment DPG Spring Meeting Dresden, 🇩🇪 Mar 20–24, 2023 Abstract
Heavy flavor jet tagging performance studies at CMS for High Luminosity LHC CMS Upgrade days CERN, 🇨🇭 Feb 6-8, 2023 Materials [restricted CERN access]
ttbb modelling for ttH analyses at the LHC 15th Annual Meeting of the Helmholtz Alliance "Physics at the Terascale" DESY, 🇩🇪 Nov 29–30, 2022 Slides
Status on measurements of ttH(H→bb) and ttbb at ATLAS + CMS Modelling of the ttbb process at the LHC in light of ttH measurements CERN, 🇨🇭 Jul 5, 2022 Slides
Heavy flavor jet tagging algorithm developments at CMS for HL-LHC 10th Edition of the Large Hadron Collider Physics Conference online May 16–20, 2022 Poster, Proceedings
Graph neural network applications in tt+heavy flavor studies at the CMS experiment DPG Spring Meeting online Mar 21–25, 2022 Abstract
Jet-assignments of the additional b-jets in the tt+bb lepton+jets channel using deep neural networks and graph neural networks FSP CMS Workshop online Mar 22–24, 2021 Slides [restricted CERN access]
Assignment methods for b jets in tt+bb processes in the lepton+jets channel at the CMS experiment DPG Spring Meeting online Mar 15–19, 2021 Abstract

Supervised Bachelor/Master theses

Generating Explanations for Graph Neural Networks for tt+X events at the CMS Experiment P. Osswald PDF
Feasibility and Reliability Studies of Graph Neural Networks for Multivariate tt+X Event Classification at the CMS Experiment at CERN Y. Cung PDF
Monte-Carlo-Simulations for tt+X-Events at the CMS-Experiment S. Lelyakin PDF
Bayesian Optimization of Graph Neural Networks with Hypergraph Inputs in tt + bb Events at the CMS Experiment C. Wolter PDF
Studien zu Graph Neural Networks in tt + bb-Prozessen am CMS-Experiment [german] T. Halenke PDF

Teaching/Tutoring

Winter term 22/23 Computers in Physics
Summer term 22 Modern Experimental Physics III
Winter term 21/22 Classical Experimental Physics I
Summer term 21 Computer-based Data Analysis

Annual work reports

KSETA annual report 2021 (restricted PDF)
KSETA annual report 2022 (restricted PDF)
KSETA annual report 2023 (restricted PDF)